Tootfinder

High-$Q$ superconducting resonators fabricated in an industry-scale semiconductor-fabrication facility
Nicolas Arlt, Karina Houska, Jochen Braum\"uller, Michael Kirsch, Gerhard Metzger-Br\"uckl, Wolfgang Raberg, Thomas Stangl, Stefan Filipp, Jash Banker, Florian Brandl
https://arxiv.org/abs/2508.09577

High-$Q$ superconducting resonators fabricated in an industry-scale semiconductor-fabrication facility
Universal quantum computers promise to solve computational problems that are beyond the capabilities of known classical algorithms. To realize such quantum hardware on a superconducting material platform, a vast number of physical qubits has to be manufactured and integrated at high quality and uniformity on a chip. Anticipating the benefits of semiconductor industry processes in terms of process control, uniformity and repeatability, we set out to manufacture superconducting quantum circuits i…

"Industrial society has collapsed. All semiconductor fabrication has ceased, society-wide electrification is no longer guaranteed. There is no longer any internet. Computing as it was once known in the early 21st century is impossible. You need a computer for a task. What do you do?"
#permacomputing

Printegrated Circuits: Personal Fabrication of 3D Printed Devices with Embedded PCBs
Oliver Child, Ollie Hanton, Jack Dawson, Steve Hodges, Mike Fraser
https://arxiv.org/abs/2509.08459

Printegrated Circuits: Personal Fabrication of 3D Printed Devices with Embedded PCBs
Consumer-level multi-material 3D printing with conductive thermoplastics enables fabrication of interactive elements for bespoke tangible devices. However, large feature sizes, high resistance materials, and limitations of printable control circuitry mean that deployable devices cannot be printed without post-print assembly steps. To address these challenges, we present Printegrated Circuits, a technique that uses traditional electronics as material to 3D print self-contained interactive object…

New Materials, New Functionalities: Molecular Beam Epitaxy of Ultra-High Conductivity Oxides
Gaurab Rimal, Tanzila Tasnim, Brian Opatosky, Ryan B. Comes, Debarghya Mallick, Simon Kim, Rob G. Moore, Seongshik Oh, Matthew Brahlek
https://arxiv.org/abs/2508.10885

New Materials, New Functionalities: Molecular Beam Epitaxy of Ultra-High Conductivity Oxides
Understanding fundamental properties of materials is necessary for all modern electronic technologies. Toward this end, the fabrication of new ultrapure thin film materials is critical to discover and understand novel properties that can allow further development of technology. Oxide materials are a vast material class abound with diverse properties, and, therefore, harnessing such phases is critical for realizing emerging technologies. Pushing forward, however, requires understanding basic pro…

Fabrication of thin planar radiopure foils with 82Se for the SuperNEMO Demonstrator
X. Aguerre (a,b), A. Barabash (c), A. Basharina-Freshville (d), M. Bongrand (e), Ch. Bourgeois (e), D. Breton (e), R. Breier (f), J. Busto (g), C. Cerna (a), J. Cesar (h), M. Ceschia (d), E. Chauveau (a), S. De Capua (i), D. Duchesneau (j), J. J. Evans (i), D. V. Filosofov (c), M. Granjon (a), M. Hoballah (e), R. Hod\'ak (k), J. Horkley (l), A. Jeremie (j), S. Jullian (e), J. Kaizer (f), A. A. Klime…

Fabrication of thin planar radiopure foils with 82Se for the SuperNEMO Demonstrator
The SuperNEMO Demonstrator, designed to search for double beta decay using enriched 82Se, has been assembled in the Modane Underground Laboratory under the French Alps. Thin foils with radio - purified and enriched 82Se are installed centrally in the detector. A novel foil fabrication method has been developed, improving the radiopurity achieved in the previous generation experiment. It consists of wrapping standalone selenium pads in raw Mylar, combined with selenium purified by a new reverse-…

Dynamically tunable hydrodynamic transport in boron nitride-encapsulated graphene
Akash Gugnani, Aniket Majumdar, Kenji Watanabe, Takashi Taniguchi, Arindam Ghosh
https://arxiv.org/abs/2508.10846

Dynamically tunable hydrodynamic transport in boron nitride-encapsulated graphene
Over the past decade, graphene has emerged as a promising candidate for exploring the viscous nature of electronic flow facilitated by the availability of extremely high-quality devices employing a graphene channel encapsulated within dielectric layers of hexagonal boron nitride (hBN). However, the level of disorder in such systems is mainly determined by the device fabrication protocols, making it impossible to obtain a tunability between the impurity-dominated and the viscous transport within…

A novel cost-effective fabrication of a flexible neural probe for brain signal recording
Alireza Irandoost, Amirreza Bahramani, Roya Mohajeri, Faezeh Shahdost-Fard, Ali Ghazizadeh, Mehdi Fardmanesh
https://arxiv.org/abs/2509.09213

A novel cost-effective fabrication of a flexible neural probe for brain signal recording
This study introduces a novel, flexible, and implantable neural probe using a cost-effective microfabrication process based on a thin polyimide film. Polyimide film, known as Kapton, serves as a flexible substrate for microelectrodes, conductive tracks, and contact pads of the probe, which are made from a thin film of gold (Au). SU-8 is used to cover the corresponding tracks for electrical isolation and to increase the stiffness of the probe for better implantation. To evaluate the performance …

Emergent morphogenesis via planar fabrication enabled by a reduced model of composites
Yupeng Zhang, Adam Alon, M. Khalid Jawed
https://arxiv.org/abs/2508.08198 https://

Emergent morphogenesis via planar fabrication enabled by a reduced model of composites
The ability to engineer complex three-dimensional shapes from planar sheets with precise, programmable control underpins emerging technologies in soft robotics, reconfigurable devices, and functional materials. Here, we present a reduced-order numerical and experimental framework for a bilayer system consisting of a stimuli-responsive thermoplastic sheet (Shrinky Dink) bonded to a kirigami-patterned, inert plastic layer. Upon uniform heating, the active layer contracts while the patterned layer…

Handling fabrication defects in hex-grid surface codes
Oscar Higgott, Benjamin Anker, Matt McEwen, Dripto M. Debroy
https://arxiv.org/abs/2508.08116 https://

Handling fabrication defects in hex-grid surface codes
Recent work has shown that a hexagonal grid qubit layout, with only three couplers per qubit, is sufficient to implement the surface code with performance comparable to that of a traditional four-coupler layout [McEwen et al., 2023]. In this work we propose a method for handling broken qubits and couplers even in hex-grid surface code architectures, using an extension of the LUCI framework [Debroy et al., 2024]. We show that for isolated broken qubits, the circuit distance drops by one, while f…

Formalizing Linear Motion G-code for Invariant Checking and Differential Testing of Fabrication Tools
Yumeng He, Chandrakana Nandi, Sreepathi Pai
https://arxiv.org/abs/2509.00699

Formalizing Linear Motion G-code for Invariant Checking and Differential Testing of Fabrication Tools
The computational fabrication pipeline for 3D printing is much like a compiler - users design models in Computer Aided Design (CAD) tools that are lowered to polygon meshes to be ultimately compiled to machine code by 3D slicers. For traditional compilers and programming languages, techniques for checking program invariants are well-established. Similarly, methods like differential testing are often used to uncover bugs in compilers themselves, which makes them more reliable. The fabrication pi…

Computational Design and Fabrication of Modular Robots with Untethered Control
Manas Bhargava, Takefumi Hiraki, Malina Strugaru, Michal Piovarci, Chiara Daraio, Daisuke Iwai, Bernd Bickel
https://arxiv.org/abs/2508.05410

Computational Design and Fabrication of Modular Robots with Untethered Control
Natural organisms use distributed actuation via their musculoskeletal systems to adapt their gait for traversing diverse terrains or to morph their bodies to perform varied tasks. A longstanding challenge in the field of robotics is to mimic this extensive adaptability and range of motion. This has led humans to develop various soft robotic systems that emulate natural organisms. However, such systems are generally optimized for a single functionality, lack the ability to change form or functio…

Les voitures sont polluantes, mais d’un point de vue historique, leur fabrication et la complexité et l’échelle de ses usines montrait un aboutissement de l’industrialisation où tout venait ensemble.
https://www.cinematheque.fr/henri/film/155074-autopolis-leon-poirier-1934/

Israeli quantum computing startup QuamCore raised a $26M Series A led by Sentinel, taking its total funding to $35M, and plans to move into chip fabrication (Globes)
https://en.globes.co.il/en/article-israeli-quantum-computing-co-quamcore-raises…

Israeli quantum computing co QuamCore raises $26m
The company has developed a fully designed and simulated architecture capable of scaling to 1 million qubits in a single cryostat.

Design, Fabrication and Characterization of the Thermal Filter Assembly on the Solar Ultraviolet Imaging Telescope (SUIT) on-board Aditya- L1
Janmejoy Sarkar, Avyarthana Ghosh, Sreejith Padinhatteeri, Ravi Kesharwani, Ramaprakash A. N., Durgesh Tripathi, Bhargava Ram B. S., R. Venkateshwaran, Ketan Patel, Melvin James, Mintu Karmakar, Akshay Kulkarni, Deepa Modi, Chaitanya Rajarshi, Girish M. Gouda, Aafaque R. Khan, Abhijit Adoni, Sajjade F. Mustafa, Pravin Khodade, Abhay Kohok

Design, Fabrication and Characterization of the Thermal Filter Assembly on the Solar Ultraviolet Imaging Telescope (SUIT) on-board Aditya- L1
The Solar Ultraviolet Imaging Telescope (SUIT) observes the Sun in the near-ultraviolet regime on board the Aditya-L1 satellite, India's dedicated mission to study the Sun. SUIT will image the Sun in the wavelength range of 200-400 nm using 11 science bandpasses with varying spectral bandwidths between 0.1-58 nm. Within this range, the Sun provides huge incoming solar flux to the telescope that also varies by a factor of ~ 20 from the lower end to the upper end of the wavelength band of interes…

The Flaws of Others: An LLM-driven Framework for Scientific Knowledge Production
Juan B. Guti\'errez
https://arxiv.org/abs/2507.06565 https://

The Flaws of Others: An LLM-driven Framework for Scientific Knowledge Production
Large-language models turn writing into a live exchange between humans and software. We capture this new medium with a discursive-network model that treats people and LLMs as equal nodes and tracks how their statements circulate. Broadening the focus from isolated hallucinations, we define invalidation (any factual, logical, or structural breach) and show it follows four hazards: drift from truth, self-repair, fresh fabrication, and external detection. A general mathematical model of discursive…

Graphene-Gold THz Metasurfaces with Tailored Resonant Structure for Enhanced Nonlinear Response
Anna Theodosi, Isaac Appiah Otoo, Anastasios D. Koulouklidis, Nikolaos Matthaiakakis, George Kakarantzas, Petri Mustonen, Harri Lipsanen, Georgy Fedorov, Ioannis Liontos, Stelios Tzortzakis, Polina Kuzhir, Maria Kafesaki, Odysseas Tsilipakos
https://

Graphene-Gold THz Metasurfaces with Tailored Resonant Structure for Enhanced Nonlinear Response
Graphene's exceptional nonlinear optical properties combined with resonant photonic structures offer a promising pathway for efficient nonlinear applications at terahertz (THz) frequencies. In this work, we propose and demonstrate a fabrication-friendly hybrid nonlinear metasurface composed of gold patches integrated with uniform graphene, circumventing the need for complex graphene patterning. The structure supports strong localized resonances that enhance nonlinear interactions. By exploiting…

Nonlinear dispersive waves in soft elastic laminates under finite magneto-deformations
Harold Berjamin, Stephan Rudykh
https://arxiv.org/abs/2508.06324 https://

Nonlinear dispersive waves in soft elastic laminates under finite magneto-deformations
Layered media can be used as acoustic filters, allowing only waves of certain frequencies to propagate. In soft magneto-active laminates, the shear wave band gaps (i.e., the frequency intervals for which shear waves cannot propagate) can be adjusted after fabrication by exploiting the magneto-elastic coupling. In the present study, the control of shear wave propagation in magneto-active stratified media is revisited by means of homogenisation theory, and extended to nonlinear waves of moderate …

Tell-Tale Watermarks for Explanatory Reasoning in Synthetic Media Forensics
Ching-Chun Chang, Isao Echizen
https://arxiv.org/abs/2509.05753 https://arxiv.o…

Tell-Tale Watermarks for Explanatory Reasoning in Synthetic Media Forensics
The rise of synthetic media has blurred the boundary between reality and fabrication under the evolving power of artificial intelligence, fueling an infodemic that erodes public trust in cyberspace. For digital imagery, a multitude of editing applications further complicates the forensic analysis, including semantic edits that alter content, photometric adjustments that recalibrate colour characteristics, and geometric projections that reshape viewpoints. Collectively, these transformations man…

Electric-field-assisted phase switching for crystal phase quantum dot fabrication in GaAs nanowires
Qiang Yu (Universit\'e Paris-Saclay, CNRS, Centre de Nanosciences et de Nanotechnologies, Palaiseau, France), Khakimjon Saidov (Centre for BioImaging Sciences, Department of Biological Sciences and Physics, National University of Singapore, Singapore), Ivan Erofeev (Centre for BioImaging Sciences, Department of Biological Sciences and Physics, National University of Singapore, Singap…

Electric-field-assisted phase switching for crystal phase quantum dot fabrication in GaAs nanowires
The occurrence of several crystal phases within nanostructures of a single material presents both challenges and opportunities. While unintended phase mixing can degrade optoelectronic performances, deliberate control of polytypism enables novel heterostructures with unique quantum properties, crystal phase quantum dots (CPQDs). However, since tailoring the formation of CPQDs is difficult, applications remain scarce. Here, we demonstrate electric-field-driven crystal phase switching in GaAs nan…

Design, Simulation, and Fabrication of a Hexagonal Microfluidic Platform for Culturing Neurons
Maxx Yung
https://arxiv.org/abs/2508.00425 https://arxiv.org…

Design, Simulation, and Fabrication of a Hexagonal Microfluidic Platform for Culturing Neurons
Developing an organoid computing platform from neurons in vitro demands stable, precisely controlled microenvironments. To address this requirement, we designed, simulated, and fabricated a microfluidic device featuring hexagonal wells ($34.64\,\mathrm{μm}$ side length) in a honeycomb array connected by $20\,\mathrm{μm}$ channels. Computational fluid dynamics (CFD) modeling, validated by high mesh quality ($0.934$ orthogonal quality) and robust convergence, confirmed the architecture supports…

Microscale architected materials for elastic wave guiding: Fabrication and dynamic characterization across length and time scales
Vignesh Kannan, Charles Dorn, Ute Drechsler, Dennis M. Kochmann
https://arxiv.org/abs/2507.01757

Microscale architected materials for elastic wave guiding: Fabrication and dynamic characterization across length and time scales
We present an experimental protocol for the fabrication and characterization of scalable microarchitected elastic waveguides. Using silicon microfabrication techniques, we develop free-standing 2D truss-based architected waveguides with a maximum diameter of 80 mm, unit cells size of 100 micrometer, and minimum beam width of 5 micrometer, thus achieving scale separation. To characterize elastic wave propagation, we introduce a custom-built scanning optical pump-probe experiment that enables con…

Fabrication of microstructured devices of the unconventional superconductor CeCoIn5 for investigations of isolated grain boundaries
Sanu Mishra, Sean M. Thomas, Rod Mccabe, Eric D. Bauer, Filip Ronning
https://arxiv.org/abs/2507.22238

Fabrication of microstructured devices of the unconventional superconductor CeCoIn5 for investigations of isolated grain boundaries
Grain boundaries are critical for determining the functionality of polycrystalline materials. Here we present on the structural $\&$ transport properties of grain boundaries in the unconventional superconductor CeCoIn$_5$. We provide a detailed recipe for the fabrication of isolated grain boundary devices from of as-grown polycrystalline samples of CeCoIn$_5$. Electron backscattered diffraction imaging of polycrystalline CeCoIn$_5$ samples reveals an abundance of $90^\circ$ misorientation grain…

GIPPO: A Graph-based, Iterative, Printing-Path Optimization Slicer for Architected Lattices
Pierpaolo Fucile, Maria Kalogeropoulou, Vivek Cherian David, Lorenzo Moroni
https://arxiv.org/abs/2508.21694 …

GIPPO: A Graph-based, Iterative, Printing-Path Optimization Slicer for Architected Lattices
Architected materials of significant geometric complexity offer exceptional mechanical properties that often surpass those of their constituent materials. However, their fabrication through extrusion-based 3D printing remains hindered by suboptimal printing trajectories, which is inherent to commercial slicing software. They produce multiple non-continuous paths that compromise fabrication time, shape fidelity, and structural integrity, particularly for thin-walled lattice structures. To addres…

Analysis of Design Algorithms and Fabrication of a Graph-based Double-curvature Structure with Planar Hexagonal Panels
Mehdi Gorjian, Gregory A. Luhan, Stephen M. Caffey
https://arxiv.org/abs/2507.16171

Analysis of Design Algorithms and Fabrication of a Graph-based Double-curvature Structure with Planar Hexagonal Panels
This paper presents a novel algorithmic framework for the computational design, simulation, and fabrication of a hexagonal grid-based double-curvature structure with planar hexagonal panels. The journey begins with constructing a robust data structure through the meticulous subdivision of an equilateral triangle surface, forming a foundational triangular grid. This grid is the basis for a graph that encapsulates hexagons, laying the groundwork for simulating dynamic interactions and form-findin…

Sub- {\mu} W Battery-Less and Oscillator-Less Wi-Fi Backscattering Transmitter Reusing RF Signal for Harvesting, Communications, and Motion Detection
Marco Privitera, Andrea Ballo, Karim Ali Ahmed, Alfio Dario Grasso, Massimo Alioto
https://arxiv.org/abs/2508.05479

Sub- μ W Battery-Less and Oscillator-Less Wi-Fi Backscattering Transmitter Reusing RF Signal for Harvesting, Communications, and Motion Detection
In this paper, a sub-uW power 802.11b backscattering transmitter is presented to enable reuse of the same incident wave for three purposes: RF harvesting, backscattering communications and position/motion sensing. The removal of the battery and any off-chip motion sensor (e.g., MEMS) enables unprecedented level of miniaturization and ubiquity, unrestricted device lifespan, low fabrication and maintenance cost. The uW power wall for WiFi transmitters is broken for the first time via local oscill…

Programming tension in 3D printed networks inspired by spiderwebs
Thijs Masmeijer, Caleb Swain, Jeff Hill, Ed Habtour
https://arxiv.org/abs/2509.05855 https://

Programming tension in 3D printed networks inspired by spiderwebs
Each element in tensioned structural networks -- such as tensegrity, architectural fabrics, or medical braces/meshes -- requires a specific tension level to achieve and maintain the desired shape, stability, and compliance. These structures are challenging to manufacture, 3D print, or assemble because flattening the network during fabrication introduces multiplicative inaccuracies in the network's final tension gradients. This study overcomes this challenge by offering a fabrication algorithm f…

High-current p-type transistors from precursor-engineered synthetic monolayer WSe$_2$
Anh Tuan Hoang, Kathryn Neilson, Kaikui Xu, Yucheng Yang, Stephanie M. Ribet, Tara Pe\~na, Giulio D'Acunto, Young Suh Song, Anton E. O. Persson, William Millsaps, Colin Ophus, Matthew R. Rosenberger, Eric Pop, Andrew J. Mannix
https://arxiv.org/abs/25…

High-current p-type transistors from precursor-engineered synthetic monolayer WSe$_2$
Monolayer tungsten diselenide (WSe$_2$) is a leading candidate for nanoscale complementary logic. However, high defect densities introduced during thin-film growth and device fabrication have limited p-type transistor performance. Here, we report a combined strategy of precursor-engineered chemical vapor deposition and damage-minimizing fabrication to overcome this limitation. By converting tungsten trioxide and residual oxyselenides into reactive suboxides before growth, and precisely regulati…

Exploring Paper as a Material: Plotting the Design Space of The Fabrication for Dynamic Paper-Based Interactions
Ruhan Yang, Ellen Yi-Luen Do
https://arxiv.org/abs/2508.19407 ht…

Exploring Paper as a Material: Plotting the Design Space of The Fabrication for Dynamic Paper-Based Interactions
We reviewed 43 papers to understand the fabrication of dynamic paper-based interactions. We used a design space to classify tool selection, technique choice, and exploration of paper as a material. We classified 9 dimensions for the design space, including 4 dimensions for tools (precision, accommodation, complexity, and availability), 3 dimensions for techniques (cutting techniques, folding techniques, and integration techniques), and 2 dimensions for paper as the material (paper weight and pa…

Covalently Integrated CNT@rGO for Superior Conductivity and Cycling Stability in Lithium-Ion Batterie
Junwen Tang, Jingbo Pang, Jie Wang, Huiming Liang, Ao Du, Long Kuang, Xiaoming Cai, Ming Qin, Cuixia Yan, Wu Zhou, Jinming Cai
https://arxiv.org/abs/2507.04296

Covalently Integrated CNT@rGO for Superior Conductivity and Cycling Stability in Lithium-Ion Batterie
The limitations of conventional conductive agents in lithium-ion batteries, such as carbon black and graphite flakes, have driven the search for high-performance alternatives. Carbon nanotubes (CNTs) and graphene offer exceptional conductivity and lower dosage requirements, but face challenges related to high costs and complex fabrication processes. Here, we report a simple and cost-effective one-step chemical vapor deposition (CVD) method for the ultra-high yield growth (7692.31%) of CNTs on a…

A Prototype Hybrid Mode Cavity for Heterodyne Axion Detection
Zenghai Li, Kevin Zhou, Marco Oriunno, Asher Berlin, Sergio Calatroni, Raffaele Tito D'Agnolo, Sebastian A. R. Ellis, Philip Schuster, Sami G. Tantawi, Natalia Toro
https://arxiv.org/abs/2507.07173

A Prototype Hybrid Mode Cavity for Heterodyne Axion Detection
In the heterodyne approach to axion detection, axion dark matter induces transitions between two modes of a microwave cavity, resulting in a parametrically enhanced signal power. We describe the fabrication and characterization of a prototype normal conducting cavity specifically optimized for heterodyne detection. Corrugations on the cavity walls support linearly polarized hybrid modes which maximize the signal power while strongly suppressing noise. We demonstrate tuning mechanisms which allo…

Efficient high-quality photon pair generation in modal phase-matched thin-film lithium niobate micro-ring resonators
Tingting Chen, Feihong Xue, Ryan Hogan, Xiaofei Ma, Jiaxuan Zhou, Yule Zhao, Yanling Xiao, Zhilin Ye, Chong Sheng, Qiang Wang, Shining Zhu, Hui Liu
https://arxiv.org/abs/2508.05983

Efficient high-quality photon pair generation in modal phase-matched thin-film lithium niobate micro-ring resonators
Efficient generation of high-quality photon pairs is essential for modern quantum technologies. Micro-ring resonator is an ideal platform for studying on-chip photon sources due to strong nonlinear effect, resonant-enhanced optical fields, and high integration. Thin-film lithium niobate (TFLN) micro-ring resonators with periodically poled quasi-phase matching have shown high-quality photon pair generation. However, periodic poling technology remains expensive and requires complex fabrication hi…

The Space Coronagraph Optical Bench (SCoOB): 7. design, fabrication, and first light for a self-coherent camera
Kevin Derby, Kian Milani, Grace C. Hathaway, Joshua Liberman, Kyle Van Gorkom, Ramya Anche, Adam Schilperoort, Corey Fucetola, Brandon Chalifoux, Kuravi Hewawasam, Christopher Mendillo, Sebastiaan Y. Haffert, Ewan S. Douglas
https://

The Space Coronagraph Optical Bench (SCoOB): 7. design, fabrication, and first light for a self-coherent camera
The 2020 Decadal Survey on Astronomy and Astrophysics tasked future space observatories with the goal of detecting and characterizing a large sample of Earth-like exoplanets. To achieve this, these observatories will require coronagraphs and wavefront control algorithms in order to achieve $10^{-10}$ or better starlight suppression. The Space Coronagraph Optical Bench (SCoOB) is a vacuum compatible testbed at the University of Arizona which aims to advance and mature starlight suppression techn…

Fabrication and Experimental Study of Prototype NdFeB Helical Undulators
Nezah Balal, Eberhard Bamberg, Vladimir L. Bratman, Eyal Magory
https://arxiv.org/abs/2508.00232 https:/…

Fabrication and Experimental Study of Prototype NdFeB Helical Undulators
An experiment with short prototypes of helical undulators, comprised of longitudinally magnetized helices made from a single piece of a rare-earth magnet, is described. Wire electrical discharge machining (WEDM) in combination with a flat tool and the rotary movement of the workpiece made it possible to achieve high precision in the manufacture of NdFeB helices. An assembly of two oppositely longitudinally magnetized helices with a period of 20 mm and a relatively large inner diameter of 8 mm c…

2.4-GHz Integrated CMOS Low-Noise Amplifier (English Version)
Jorge L. Gonz\'alez-Rios, Juan C. Cruz Hurtado, Robson L. Moreno, Diego V\'azquez
https://arxiv.org/abs/2509.02224

2.4-GHz Integrated CMOS Low-Noise Amplifier (English Version)
This paper presents the analysis, design, fabrication, and measurement of an integrated low-noise amplifier (LNA) implemented using a 130 nm CMOS technology, operating in the 2.4 GHz band. The LNA is a crucial component in the performance of receivers, particularly in integrated receivers. The proposed LNA was designed to meet the specifications of the IEEE 802.15.4 standard. Post-layout simulation results, including pads with electrostatic discharge (ESD) protection, are as follows: gain of 10…

L’industrie de défense française au défi de sa « montée en cadence » face Š l’augmentation des menaces
https://www.lemonde.fr/economie/article/2025/07/21/defense-le-defi-industriel-de-la-montee-en-cadence_6622690_3234.htm…

L’industrie de défense française au défi de sa « montée en cadence » face à l’augmentation des menaces
Le ministère des armées demande aux grands groupes industriels de produire plus et plus vite. Une gageure alors que les sous-traitants sont souvent le maillon faible de la chaîne de fabrication.

Design and fabrication of ultrasound linear array transducer used in ultrasound endoscope
Yuan Zhang, Mingtong Chen, Zhengbao Yang
https://arxiv.org/abs/2507.18628 https://

Design and fabrication of ultrasound linear array transducer used in ultrasound endoscope
This report details the successful construction of an ultrasound imaging platform and the design and fabrication of a novel ultrasound endoscope probe. The projects primary objective was to establish a functional system for acquiring and processing ultrasound signals, specifically targeting minimally invasive endoscopic applications. The ultrasound imaging platform was primarily designed and developed based on Texas Instruments (TI) Evaluation Modules (EVMs). It enables the transmission of 32-c…

Ahh. ... Elon did it again...
Video:
#SpaceX

Design, fabrication and control of a cable-driven parallel robot
Dhruv Sorathiya, Sarthak Sahoo, Vivek Natarajan
https://arxiv.org/abs/2506.18526 https://

Design, fabrication and control of a cable-driven parallel robot
In cable driven parallel robots (CDPRs), the payload is suspended using a network of cables whose length can be controlled to maneuver the payload within the workspace. Compared to rigid link robots, CDPRs provide better maneuverability due to the flexibility of the cables and consume lesser power due to the high strength-to-weight ratio of the cables. However, amongst other things, the flexibility of the cables and the fact that they can only pull (and not push) render the dynamics of CDPRs co…

Acoustic-Assisted Fabrication of Thin Shells with Spatially Distributed Imperfections
Ilyes Krida, Jacob Tang, Daniel Floryan, Tian Chen
https://arxiv.org/abs/2506.23828

Acoustic-Assisted Fabrication of Thin Shells with Spatially Distributed Imperfections
Thin-shell structures, found in biological systems such as beetle carapaces and widely used in aerospace, civil, and mechanical engineering, achieve remarkable strength-to-mass ratio given their slenderness and curved geometries. However, their load-bearing capacity is highly sensitive to geometric imperfections, which are often unavoidable during fabrication and can trigger subcritical buckling. Silicone-based hemispherical domes have served as an experimental modal system to study this phenom…

COMS-Integrated Atomic Vapor Cells with Ultra-long Optical Access for Highly Sensitive and Scalable Quantum Sensors
Yintao Ma, Yao Chen, Mingzhi Yu, Yanbin Wang, Ju Guo, Ping Yang, Qijing Lin, Yang Lv, Libo Zhao
https://arxiv.org/abs/2507.05993

COMS-Integrated Atomic Vapor Cells with Ultra-long Optical Access for Highly Sensitive and Scalable Quantum Sensors
The most appealing features of chip-scale quantum sensors are their capability to maintain extreme sensitivity while enabling large-scale batch manufacturing. This necessitates high-level integration and wafer-level fabrication of atomic vapor cells. In this paper, we describe a micromachining paradigm for wafer-level atomic vapor cells functionalized by CMOS-compatible non-magnetic heaters and temperature sensors and demonstrate several innovative applications. Leveraging standard micro-nanofa…

Disentangling the Effects of Simultaneous Environmental Variables on Perovskite Synthesis and Device Performance via Interpretable Machine Learning
Tianran Liu, Nicky Evans, Kangyu Ji, Ronaldo Lee, Aaron Zhu, Vinn Nguyen, James Serdy, Elizabeth Wall, Yongli Lu, Florian A. Formica, Moungi G. Bawendi, Quinn C. Burlingame, Yueh-Lin Loo, Vladimir Bulovic, Tonio Buonassisi

Disentangling the Effects of Simultaneous Environmental Variables on Perovskite Synthesis and Device Performance via Interpretable Machine Learning
Despite the rapid rise in perovskite solar cell efficiency, poor reproducibility remains a major barrier to commercialization. Film crystallization and device performance are highly sensitive to environmental factors during fabrication, yet their complex interactions are not well understood. In this work, we present a systematic framework to investigate the influence of both individual and coupled environmental variables on device efficiency and crystallization kinetics. We developed an integra…

Forward and Backward Electron Acceleration by Radially Polarized Ultra-Intense Laser Focus Seeded By Field Ionization of High Charge States of Neon
Nour El Houda Hissi, Gregory K. Ngirmang, Joseph Smith, Enam A. Chowdhury
https://arxiv.org/abs/2509.01741

Forward and Backward Electron Acceleration by Radially Polarized Ultra-Intense Laser Focus Seeded By Field Ionization of High Charge States of Neon
Thanks to the fabrication of large aperture phase optics, ultra-intense relativistic laser plasma interaction (RLPI) experiments with complex polarization states are becoming feasible. In this work, we perform a computational investigation of direct acceleration of electrons produced during ionization of underdense neon gas using a tightly focused and radially polarized Petawatt-class short pulse lasers by numerically solving the relativistically invariant Lorentz equations, incorporating semi-…

Charge Regulation Effect on Nanoparticles Interaction Mediated by Polyelectrolyte
Vijay Yadav, Prabhat Kumar Jaiswal, Rudolf Podgornik, Sunita Kumari
https://arxiv.org/abs/2507.00549

Charge Regulation Effect on Nanoparticles Interaction Mediated by Polyelectrolyte
The ability to precisely control surface charge using charged polymers is fundamental to many nanotechnology applications, enabling the design and fabrication of materials with tailored properties and functionalities. Here, we study the effect of charge regulation (CR) on the interaction between two nanoparticles (NPs) mediated by an oppositely charged polyelectrolyte (PE) in an electrolyte solution. To this end, we employ a hybrid CR Monte Carlo (CR-MC)/molecular dynamics (MD) simulation frame…

Replaced article(s) found for cs.HC. https://arxiv.org/list/cs.HC/new
[2/2]:
- Making Physical Objects with Generative AI and Robotic Assembly: Considering Fabrication Constrai...
Alexander Htet Kyaw, Se Hwan Jeon, Miana Smith, Neil Gershenfeld

Temperature-Dependent Emission Spectroscopy of Quantum Emitters in Hexagonal Boron Nitride
Mouli Hazra, Manuel Rieger, Anand Kumar, Mohammad N. Mishuk, Chanaprom Cholsuk, Kabilan Sripathy, Viviana Villafa\~ne, Kai M\"uller, Jonathan J. Finley, Tobias Vogl
https://arxiv.org/abs/2507.06783

Temperature-Dependent Emission Spectroscopy of Quantum Emitters in Hexagonal Boron Nitride
Color centers in hexagonal boron nitride (hBN) have attracted significant interest due to their potential applications in future optical quantum technologies. For most applications, scalable on-demand fabrication is a key requirement. Recent advances using localized electron irradiation have demonstrated near-identical emitters in the blue and yellow spectral regions. While the blue emitters have been demonstrated in cryogenic temperatures, the yellow emitters remain uncharacterized under such …

Hardware-software co-exploration with racetrack memory based in-memory computing for CNN inference in embedded systems
Benjamin Chen Ming Choong, Tao Luo, Cheng Liu, Bingsheng He, Wei Zhang, Joey Tianyi Zhou
https://arxiv.org/abs/2507.01429

Hardware-software co-exploration with racetrack memory based in-memory computing for CNN inference in embedded systems
Deep neural networks generate and process large volumes of data, posing challenges for low-resource embedded systems. In-memory computing has been demonstrated as an efficient computing infrastructure and shows promise for embedded AI applications. Among newly-researched memory technologies, racetrack memory is a non-volatile technology that allows high data density fabrication, making it a good fit for in-memory computing. However, integrating in-memory arithmetic circuits with memory cells af…

Enhancing Complex Injection Mold Design Validation Using Multicombined RV Environments
J. M. Mercado-Colmenero, D. F. Garcia-Molina, B. Gutierrez-Jimenez, C. Martin-Donate
https://arxiv.org/abs/2507.20732

Enhancing Complex Injection Mold Design Validation Using Multicombined RV Environments
The intricate design of real complex injection molds poses significant challenges. Mold design vali-dation often falls to operators with tool-handling experience but limited CAD proficiency. Unlike other industries, the scale and costs of injection mold fabrication hinder prototyping before pro-duction. Virtual reality (VR) has emerged as a revolutionary solution offering a safe, immersive, and realistic experience and accessible using QR codes. This paper presents a new multimodal virtual envi…

Optimized Fabrication Procedure for High-Quality Graphene-based Moir\'e Superlattice Devices
Shuwen Sun, Pablo Jarillo-Herrero
https://arxiv.org/abs/2507.15853

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
Moiré superlattices constitute a versatile platform to investigate emergent phenomena arising from the interplay of strong correlations and topology, while offering flexible in situ tunability. However, the fabrication of such moiré superlattices is challenging. It is difficult to achieve highly uniform devices with a precise twist angle because of the unintentional introduction of heterostrain, twist angle disorder, and angle/lattice relaxation during the nanofabrication process. This articl…

Fast entangling gates on fluxoniums via parametric modulation of plasmon interaction
Peng Zhao, Peng Xu, Zheng-Yuan Xue
https://arxiv.org/abs/2509.04762 https://

Fast entangling gates on fluxoniums via parametric modulation of plasmon interaction
In superconducting quantum processors, exploring diverse control methods could offer essential versatility and redundancy to mitigate challenges such as frequency crowding, spurious couplings, control crosstalk, and fabrication variability, thus leading to better system-level performance. Here we introduce a control strategy for fast entangling gates in a scalable fluxonium architecture, utilizing parametric modulation of the plasmon interaction. In this architecture, fluxoniums are coupled via…

Developing and Validating a High-Throughput Robotic System for the Accelerated Development of Porous Membranes
Hongchen Wang, Sima Zeinali Danalou, Jiahao Zhu, Kenneth Sulimro, Chaewon Lim, Smita Basak, Aimee Tai, Usan Siriwardana, Jason Hattrick-Simpers, Jay Werber
https://arxiv.org/abs/2508.10973…

Developing and Validating a High-Throughput Robotic System for the Accelerated Development of Porous Membranes
The development of porous polymeric membranes remains a labor-intensive process, often requiring extensive trial and error to identify optimal fabrication parameters. In this study, we present a fully automated platform for membrane fabrication and characterization via nonsolvent-induced phase separation (NIPS). The system integrates automated solution preparation, blade casting, controlled immersion, and compression testing, allowing precise control over fabrication parameters such as polymer …

3D Atomic-Scale Metrology of Strain Relaxation and Roughness in Gate-All-Around (GAA) Transistors via Electron Ptychography
Shake Karapetyan, Steven E. Zeltmann, Glen Wilk, Ta-Kun Chen, Vincent D. -H. Hou, David A. Muller
https://arxiv.org/abs/2507.07265

3D Atomic-Scale Metrology of Strain Relaxation and Roughness in Gate-All-Around (GAA) Transistors via Electron Ptychography
To improve transistor density and electronic performance, next-generation semiconductor devices are adopting three-dimensional architectures and feature sizes down to the few-nm regime, which require atomic-scale metrology to identify and resolve performance-limiting fabrication challenges. X-ray methods deliver three-dimensional imaging of integrated circuits but lack the spatial resolution to characterize atomic-scale features, while conventional electron microscopy offers atomic-scale imagin…

Lightweight Error-Correction Code Encoders in Superconducting Electronic Systems
Yerzhan Mustafa, Berker Pek\"oz, Sel\c{c}uk K\"ose
https://arxiv.org/abs/2509.00962 ht…

Lightweight Error-Correction Code Encoders in Superconducting Electronic Systems
Data transmission from superconducting electronic circuits, such as single flux quantum (SFQ) logic, to room-temperature electronics is susceptible to bit errors, which may result from flux trapping, fabrication defects, and process parameter variations (PPV). Due to the cooling power budget at 4.2 K and constraints on the chip area, the size of the error-correction code encoders is limited. In this work, three lightweight error-correction code encoders are proposed that are based on Hamming(7,…

High-Performance Self-Powered Photoelectrochemical Detection Using Scalable InGaN/GaN Nanowire Arrays
Kishan Lal Kumawat, Md. Afjalur Rahman, Nirmal Anand, Dipon Kumar Ghosh, Christy Giji Jenson, Md. Moinul Islam, Samuel Olakunle Adigbo, Sheik Munim Hussain, Md Zunaid Baten, Sharif Md. Sadaf
https://arxiv.org/abs/2507.06501

High-Performance Self-Powered Photoelectrochemical Detection Using Scalable InGaN/GaN Nanowire Arrays
Photoelectrochemical photodetectors (PEC-PDs) are promising owing to their simple, low-cost fabrication, self-powered operation, high photoresponse, and environmental sensitivity. In this work, we report for the first time the self-powered PEC photodetection characteristics of nanowire (NW) based green-emitting InGaN/GaN multiple quantum well (MQW) PEC-PDs, fabricated via a scalable top-down approach.The device exhibits strong UV sensitivity with a peak at 365 nm and an extended response into t…

Low Loss Aluminum Nitride Waveguide Fabrication: Propagation Loss Reduction Through ALD and RTA
Nikolay Videnov, Matthew L. Day, Michal Bajcsy
https://arxiv.org/abs/2508.20245 h…

Low Loss Aluminum Nitride Waveguide Fabrication: Propagation Loss Reduction Through ALD and RTA
Aluminum nitride (AlN) has emerged as a leading platform for integrated photonics in the visible and ultraviolet spectral ranges, particularly for quantum information applications involving trapped atoms. However, achieving low propagation loss in tightly confining single-mode AlN waveguides remains a challenge, especially at sub-micron wavelengths where scattering losses scale unfavorably. In this work, we present a reproducible and detailed fabrication process for low-loss AlN waveguides on s…

Hybrid-Integrated InGaAs/InP SPAD Arrays for Quantum Communications
Joseph A. Dolphin, Rosemary O. E. Scowen, Louise M. Wells, David J. P. Ellis, Abbie L. Lowe, Benjamin Ramsay, J. Iwan Davies, Andrew J. Shields, Taofiq K. Paraiso, R. Mark Stevenson
https://arxiv.org/abs/2509.05134

Hybrid-Integrated InGaAs/InP SPAD Arrays for Quantum Communications
Photonic integration is a promising route to miniaturise the hardware of quantum key distribution (QKD), yet the monolithic integration of single photon detectors remains a significant challenge. QKD receiver chips integrating superconducting detectors have been demonstrated, but their requirement for cryogenic cooling restricts their practical applications. High-frequency gated single-photon avalanche diodes (SPADs) provide a mature non-cryogenic alternative and their fabrication into compact …

Design and performance of "R-FLEX", a flexure-based fiber positioning robot for spectroscopic cosmology
Nicholas R. Wenner, Joseph H. Silber, David J. Schlegel
https://arxiv.org/abs/2508.02730

Design and performance of "R-FLEX", a flexure-based fiber positioning robot for spectroscopic cosmology
We present the design, fabrication, and testing of R-FLEX, a novel flexure mechanism for next-generation fiber-fed astronomical instruments. As the current Dark Energy Spectroscopic Instrument (DESI) revolutionizes cosmology with over 56 million collected spectra using 5,000 robotic fiber positioners at 10.4 mm pitch, we project that future instruments will require 2.5-3x smaller fiber robots by area. R-FLEX enables precision radial motion for fiber robots mountable at 6.2 mm pitch, delivering …

Electrostatic control of quantum phases in KTaO3-based planar constrictions
Jordan T. McCourt, Ethan G. Arnault, Merve Baksi, Samuel J. Poage, Salva Salmani-Rezaie, Divine P. Kumah, Kaveh Ahadi, Gleb Finkelstein
https://arxiv.org/abs/2506.18894

Electrostatic control of quantum phases in KTaO3-based planar constrictions
Two-dimensional electron gases (2DEGs) formed at complex oxide interfaces offer a unique platform to engineer quantum nanostructures. However, scalable fabrication of locally addressable devices in these materials remains challenging. Here, we demonstrate an efficient fabrication approach by patterning narrow constrictions in a superconducting KTaO3-based heterostructure. The constrictions are individually tunable via the coplanar side gates formed within the same 2DEG plane. Our technique leve…

Fabrication and Characterization of the Moir\'e surface state on a topological insulator
Yi Zhang, Dang Liu, Qiaoyan Yu, Ruijun Xi, Xingsen Chen, Shasha Xue, Jice Sun, Xian Du, Xuhui Ning, Tingwen Miao, Pengyu Hu, Hao Yang, Dandan Guan, Xiaoxue Liu, Liang Liu, Yaoyi Li, Shiyong Wang, Canhua Liu, Haijiao Ji, Noah F. Q. Yuan, Hao Zheng, Jinfeng Jia
https://…

Fabrication and Characterization of the Moiré surface state on a topological insulator
A Moire superlattice on the topological insulator surface is predicted to exhibit many novel properties but has not been experimentally realized. Here, we developed a two-step growth method to successfully fabricate a topological insulator Sb2Te3 thin film with a Moire superlattice, which is generated by a twist of the topmost layer via molecular beam epitaxy. The established Moire topological surface state is characterized by scanning tunneling microscopy and spectroscopy. By application of a …

Design and Fabrication Of Multiplexed One-Port SAW Resonators On A Single Chip
Alexandre Westrelin (IEMN), Pierre Debavelear (ICAM), Mathieu Lefevbre (ICAM), Nour Abdallah (IEMN), Kamal Lmimouni (IEMN), Olivier Stienne (IEMN), Bilel Hafsi (IEMN)
https://arxiv.org/abs/2506.13788

Design and Fabrication Of Multiplexed One-Port SAW Resonators On A Single Chip
Shear horizontal surface acoustic wave (SH-SAW) sensors are considered as a viable option for label-free, sensitive, real-time, and cost-effective detection. In this paper, we present the design, the fabrication and the characterization of multiplexed SAW sensors based on a single chip SAW resonator. Operating near the industrial, scientific and medical (ISM) bands, resonators were microfabricated on 42.75{\textdegree} Y (ST) cut Quartz. This substrate was selected due to its traditional associ…

A non-invasive dry-transfer method for fabricating mesoscopic devices on sensitive materials
Zhongmou Jia, Yiwen Ma, Zhongchen Xu, Xue Yang, Jianfei Xiao, Jiezhong He, Yunteng Shi, Zhiyuan Zhang, Duolin Wang, Sicheng Zhou, Bingbing Tong, Peiling Li, Ziwei Dou, Xiaohui Song, Guangtong Liu, Jie Shen, Zhaozheng Lyu, Youguo Shi, Jiangping Hu, Li Lu, Fanming Qu
http…

A non-invasive dry-transfer method for fabricating mesoscopic devices on sensitive materials
Many materials with novel or exotic properties are highly sensitive to environmental factors such as air, solvents, and heat, which complicates device fabrication and limits their potential applications. Here, we present a universal submicron fabrication method for mesoscopic devices using a dry-transfer technique, tailored specifically for sensitive materials. This approach utilizes PMMA masks, combined with a water-dissoluble coating as a sacrificial layer, to ensure that sensitive materials …

Scalable, Wireless Determination of Electric Properties of Nanostructures via Electro-Rotation in Water Solution
Yun Huang, Kai Xu, Zexi Liang, Huaizhi Li, Wenjuan Zhu, Donglei Emma Fan
https://arxiv.org/abs/2508.00227

Scalable, Wireless Determination of Electric Properties of Nanostructures via Electro-Rotation in Water Solution
Breakthroughs in nanotechnology have enabled the large-scale fabrication of nanoparticles with varied compositions and structures. Yet, evaluating their electrical conductivities remains challenging due to high volume and individual variability. We report a rapid, wireless, and parallel method to characterize longitudinal nanostructures, including insulators, semiconductors, and conducting metal oxides by using MoO3, MoS2/MoO2, and MoS2 nanoribbons, produced at different fabrication stages, as …

Who's Sorry Now: User Preferences Among Rote, Empathic, and Explanatory Apologies from LLM Chatbots
Zahra Ashktorab, Alessandra Buccella, Jason D'Cruz, Zoe Fowler, Andrew Gill, Kei Yan Leung, P. D. Magnus, John Richards, Kush R. Varshney
https://arxiv.org/abs/2507.02745

Who's Sorry Now: User Preferences Among Rote, Empathic, and Explanatory Apologies from LLM Chatbots
As chatbots driven by large language models (LLMs) are increasingly deployed in everyday contexts, their ability to recover from errors through effective apologies is critical to maintaining user trust and satisfaction. In a preregistered study with Prolific workers (N=162), we examine user preferences for three types of apologies (rote, explanatory, and empathic) issued in response to three categories of common LLM mistakes (bias, unfounded fabrication, and factual errors). We designed a pairw…

Autonomous Fabrication of Tailored Defect Structures in 2D Materials using Machine Learning-enabled Scanning Transmission Electron Microscopy
Zijie Wu, Kevin M. Roccapriore, Ayana Ghosh, Kai Xiao, Raymond R. Unocic, Stephen Jesse, Rama Vasudevan, Matthew G. Boebinger
https://arxiv.org/abs/2507.01194

Autonomous Fabrication of Tailored Defect Structures in 2D Materials using Machine Learning-enabled Scanning Transmission Electron Microscopy
Materials with tailored quantum properties can be engineered from atomic scale assembly techniques, but existing methods often lack the agility and accuracy to precisely and intelligently control the manufacturing process. Here we demonstrate a fully autonomous approach for fabricating atomic-level defects using electron beams in scanning transmission electron microscopy (STEM) that combines advanced machine learning and automated beam control. As a proof of concept, we achieved controlled fabr…

AuthenTree: A Scalable MPC-Based Distributed Trust Architecture for Chiplet-based Heterogeneous Systems
Ishraq Tashdid, Tasnuva Farheen, Sazadur Rahman
https://arxiv.org/abs/2508.13033

AuthenTree: A Scalable MPC-Based Distributed Trust Architecture for Chiplet-based Heterogeneous Systems
The rapid adoption of chiplet-based heterogeneous integration is reshaping semiconductor design by enabling modular, scalable, and faster time-to-market solutions for AI and high-performance computing. However, multi-vendor assembly in post-fabrication environments fragments the supply chain and exposes SiP systems to serious security threats, including cloning, overproduction, and chiplet substitution. Existing authentication solutions depend on trusted integrators or centralized security anch…

Amorphous Silicon-Carbide Photonics for Ultrasound Imaging
R. Tufan Erdogan, Bruno Lopez-Rodriguez, Wouter J. Westerveld, Sophinese Iskander-Rizk, Gerard J. Verbiest, Iman Esmaeil Zadeh, Peter G. Steeneken
https://arxiv.org/abs/2507.04353

Amorphous Silicon-Carbide Photonics for Ultrasound Imaging
Photonic ultrasound sensors offer unparalleled potential for improving spatial and temporal resolution in ultrasound imaging applications due to their size-independent noise figure, high sensitivity, and broad bandwidth characteristics. The exploration of optical materials in ultrasound sensing has attracted significant interest due to their potential to further enhance device performance, fabrication compatibility, and long-term stability. This work introduces amorphous silicon carbide (a-SiC)…

A New Ultrafast Printer for Large-Scale Assembly of Piezoelectric Biomaterials
Nan An, Mingtong Chen, Zhengbao Yang
https://arxiv.org/abs/2507.15167 https:…

A New Ultrafast Printer for Large-Scale Assembly of Piezoelectric Biomaterials
We propose a modular, fast and large-area fabrication of bio-piezoelectric films. The technique is based on the formation of cone-jet mode by applying a high voltage electric field to conductive spiked metal disks. And the self-assembly process of biomolecular materials through nanoconfinement with in-situ poling effect. This job achieved print speeds of up to 9.2 109 um3/s with a combination of only 2 printheads. At the same time, the modular design allows the MLSP to achieve theoretically unl…

Ultrathin oxide freestanding membranes with large-scale continuity and structural perfection
Yuhao Hong, Yang Hu, Jianyao Zheng, Minh D. Nguyen, Jelle R. H. Ruiters, Daniel M. Cunha, Iris C. G. van den Bosch, Edwin Dollekamp, Mark Huijben, Yulin Gan, Nini Pryds, Daesung Park, Christoph Baeumer, Qinghua Zhang, Guus Rijnders, Zhaoliang Liao, Gertjan Koster
https:…

Ultrathin oxide freestanding membranes with large-scale continuity and structural perfection
Freestanding oxide membranes offer integration with advanced semiconductor platforms, unlocking opportunities for flexible electronics, silicon-based spintronics, neuromorphic computing, and high-performance energy technologies. Scalable fabrication of such membranes is essential for bridging fundamental discoveries in complex oxides with practical device deployment. However, the lateral dimensions of crack- and wrinkle-free membranes remain limited to millimeter scales, forming a critical bott…

Fabrication of oriented NV center arrays in diamond via femtosecond laser writing and reorientation
Kai Klink, Andrew Raj Kirkpatrick, Yukihiro Tadokoro, Jonas Nils Becker, Shannon Singer Nicley
https://arxiv.org/abs/2507.14047

Fabrication of oriented NV center arrays in diamond via femtosecond laser writing and reorientation
Nitrogen-vacancy (NV) centers in diamond are widely recognized as highly promising solid-state quantum sensors due to their long room temperature coherence times and atomic-scale size, which enable exceptional sensitivity and nanoscale spatial resolution under ambient conditions. Ultrafast laser writing has demonstrated the deterministic spatial control of individual NV$^-$ centers, however, the resulting random orientation of the defect axis limits the magnetic field sensitivity and signal con…

Low Power, Scalable Nanofabrication via Photon Upconversion
Qi Zhou, Hao-Chi Yen, Qizhen Lan, Arynn O. Gallegos, Manchen Hu, Kyle Frohna, Hannah Niese, Da Lin, Natalia Murrietta, Pournima Narayanan, Tracy H. Schloemer, Linda Pucurimay, Sebastian Fern\'andez, Michael Seitz, Daniel N. Congreve
https://arxiv.org/abs/2508.16668

Low Power, Scalable Nanofabrication via Photon Upconversion
Micro- and nanoscale fabrication, which enables precise construction of intricate three-dimensional structures, is of foundational importance for advancing innovation in plasmonics, nanophotonics, and biomedical applications. However, scaling fabrication to industrially relevant levels remains a significant challenge. We demonstrate that triplet-triplet annihilation upconversion (TTA-UC) offers a unique opportunity to increase fabrication speeds and scalability of micro- and nanoscale 3D struct…

Arbitrary Precision Printed Ternary Neural Networks with Holistic Evolutionary Approximation
Vojtech Mrazek, Konstantinos Balaskas, Paula Carolina Lozano Duarte, Zdenek Vasicek, Mehdi B. Tahoori, Georgios Zervakis
https://arxiv.org/abs/2508.19660

Arbitrary Precision Printed Ternary Neural Networks with Holistic Evolutionary Approximation
Printed electronics offer a promising alternative for applications beyond silicon-based systems, requiring properties like flexibility, stretchability, conformality, and ultra-low fabrication costs. Despite the large feature sizes in printed electronics, printed neural networks have attracted attention for meeting target application requirements, though realizing complex circuits remains challenging. This work bridges the gap between classification accuracy and area efficiency in printed neural…

Fabrication, characterization and mechanical loading of Si/SiGe membranes for spin qubit devices
Lucas Marcogliese, Ouviyan Sabapathy, Rudolf Richter, Jhih-Sian Tu, Dominique Bougeard, Lars R. Schreiber
https://arxiv.org/abs/2508.14589

Fabrication, characterization and mechanical loading of Si/SiGe membranes for spin qubit devices
Si/SiGe heterostructures on bulk Si substrates have been shown to host high fidelity electron spin qubits. Building a scalable quantum processor would, however, benefit from further improvement of critical material properties such as the valley splitting landscape. Flexible control of the strain field and the out-of-plane electric field $\mathcal{E}_z$ may be decisive for valley splitting enhancement in the presence of alloy disorder. We envision the Si/SiGe membrane as a versatile scientific p…

Fabrication of nano-diamonds with a single NV center: Towards matter-wave interferometry with massive objects
Menachem Givon, Yaniv Bar-Haim, David Groswasser, Asi Solodar, Nadav Aharon, Michael Belman, Amit Yosefi, Erez Golan, Jurgen Jopp, Ron Folman
https://arxiv.org/abs/2508.13662

Fabrication of nano-diamonds with a single NV center: Towards matter-wave interferometry with massive objects
Quantum mechanics (QM) and General relativity (GR), also known as the theory of gravity, are the two pillars of modern physics. A matter-wave interferometer with a massive particle can test numerous fundamental ideas, including the spatial superposition principle - a foundational concept in QM - in previously unexplored regimes. It also opens the possibility of probing the interface between QM and GR, such as testing the quantization of gravity. Consequently, there exists an intensive effort to…

Lossless, Non-Volatile Post-Fabrication Trimming of PICs via On-Chip High-Temperature Annealing of Undercut Waveguides
Yating Wu, Haozhe Sun, Bo Xiong, Yalong Yv, Jiale Zhang, Zhaojie Zheng, Wei Ma, Tao Chu
https://arxiv.org/abs/2506.18633

Lossless, Non-Volatile Post-Fabrication Trimming of PICs via On-Chip High-Temperature Annealing of Undercut Waveguides
Limited by equipment precision, manufacturing deviations in waveguide width, etch depth, and layer thickness inevitably occur in photonic integrated circuits (PICs). These variations cause initial phase errors, compromising the reliability of phase-sensitive devices such as Mach-Zehnder Interferometers (MZI) and microring resonators. To overcome this, we report a nonvolatile, near-lossless post-trimming method utilizing sufficient high-temperature thermal treatment for undercut waveguides, repo…

Fabrication of airbridges with gradient exposure
Yuting Sun, Jiayu Ding, Xiaoyu Xia, Xiaohan Wang, Jianwen Xu, Shuqing Song, Dong Lan, Jie Zhao, Yang Yu
https://arxiv.org/abs/2506.14565

Fabrication of airbridges with gradient exposure
In superconducting quantum circuits, airbridges are critical for eliminating parasitic slotline modes of coplanar waveguide circuits and reducing crosstalks between direct current magnetic flux biases. Here, we present a technique for fabricating superconducting airbridges. With this technique, a single layer of photoresist is employed, and the gradient exposure process is used to define the profile of airbridges. In order to properly obtain the bridge profile, we design exposure dosage based o…

Domain Wall Engineering in Graphene-Based Josephson Junctions
Xia'an Du, Junjie Qi, Hua Jiang, X. C. Xie
https://arxiv.org/abs/2509.02082 https://arxiv…

Domain Wall Engineering in Graphene-Based Josephson Junctions
Recent progress has enabled the controlled fabrication of domain walls (DWs) in graphene, which host topological kink states. Meanwhile, reliable techniques for constructing graphene-based Joseph- son junctions have been established. While the experimental prerequisites for combining DWs with Josephson junctions are now available, this direction remains largely unexplored. In this work, we theoretically investigate transport properties in graphene-based Josephson junctions mediated by topologic…

Ex Situ Fabrication of Superconducting Nanostructures for Low-Temperature STM
Adrian Greichgauer, Roozbeh Yazdanpanah, Alexey Taskin, Oliver Breunig, Yoichi Ando, Jens Brede
https://arxiv.org/abs/2507.14092

Ex Situ Fabrication of Superconducting Nanostructures for Low-Temperature STM
Nanofabrication enables flexible experimental design but is often incompatible with scanning tunneling microscopy and spectroscopy (STM/STS) due to the latter's stringent surface quality requirements. Here, we present a fabrication strategy that combines ex situ nanolithography with in situ ultrahigh-vacuum (UHV) cleaving to produce atomically clean, nanopatterned superconductor/topological insulator (TI) heterostructures suitable for high-resolution STM/STS. In our initial Design I, nanoribbon…

Bioinspired Synergistic Texture and Color Modulation Enabled by Surface Instability of Cholesteric Liquid Crystal Elastomers
Xiao Yang, Jay Sim, Wenbin Huang, Ruike Renee Zhao
https://arxiv.org/abs/2508.03870

Bioinspired Synergistic Texture and Color Modulation Enabled by Surface Instability of Cholesteric Liquid Crystal Elastomers
Certain cephalopods can dynamically camouflage by altering both skin texture and color to match their surroundings. Inspired by this capability, we present a cholesteric liquid crystal elastomer-liquid crystal elastomer (CLCE-LCE) bilayer capable of simultaneous, reversible modulation of surface texture and structural color through programmable wrinkling. By tuning the bilayer's fabrication parameters, on-demand wrinkle morphologies and color combinations are achieved. Spatially selective UV cu…

Free-form conformal metasurfaces robustly generating topological skyrmions
Yang Fu, Rensheng Xie, Nilo Mata-Cervera, Xi Xie, Ren Wang, Xiaofeng Zhou, Helin Yang, Yijie Shen
https://arxiv.org/abs/2509.03946

Free-form conformal metasurfaces robustly generating topological skyrmions
Skyrmions are topologically stable vector textures as potential information carriers for high-density data storage and communications, especially boosted by the recently emerging meta-generators of skyrmions in electromagnetic fields. However, these implementations always rely on planar, rigid designs with stringent fabrication requirements. Here, we propose the free-form conformal metasurface generating skyrmions towards future wearable and flexible devises for topological resilience light fie…

Broadband merged-element Josephson parametric amplifier
Yuting Sun, Xianke Li, Qingyu Wang, Tairong Bai, Xudong Liao, Dong Lan, Jie Zhao, Yang Yu
https://arxiv.org/abs/2506.14651 …

Broadband merged-element Josephson parametric amplifier
Broadband quantum-limited amplifiers are essential for quantum information processing, yet challenges in design and fabrication continue to hinder their widespread applications. Here, we introduce the broadband merged-element Josephson parametric amplifier in which the discrete parallel capacitor is directly integrated with the Josephson junctions. This merged-element design eliminates the shortcomings of discrete capacitors, simplifying the fabrication process, reducing the need for high-preci…

Sub 10 nm Nanochannels Enable Directional Quasi Ballistic Exciton Transport over 5 {\mu}m at Room Temperature
Xiao-Jie Wang, Jia-Wei Tan, Xiao-Ze Li, Hong-Hua Fang, Guan-Yao Huang, Yang-Yi Chen, Yuan Luo, Jia-Tai Huang, Gong Wang, Qi-Hua Xiong, Xavier Marie, Hong-Bo Sun
https://arxiv.org/abs/2508.01567…

Sub 10 nm Nanochannels Enable Directional Quasi Ballistic Exciton Transport over 5 μm at Room Temperature
Nanoscale potential wells provide a powerful means to engineer energy landscapes in low dimensional materials, enabling control over quantum states, carrier dynamics, and optoelectronic responses. Such confinement governs phenomena including charge localization, transport anisotropy, band structure modulation, and light matter interaction strength. However, realizing clean and well defined nanostructures remains technically challenging, as fabrication techniques such as focused ion beam (FIB) m…

Morphology Formation Pathways in Solution-Processed Perovskite Thin Films
M. Majewski, O. J. J. Ronsin, J. Harting
https://arxiv.org/abs/2509.04175 https://

Morphology Formation Pathways in Solution-Processed Perovskite Thin Films
The active layer in a perovskite solar cell is usually composed of a polycrystalline thin film. Fabrication of this layer by solution processing is a promising candidate for up-scaling to the mass market. However, the evolution of an evaporating and simultaneously crystallizing thin film is not yet fully understood. To contribute to the understanding of the formation of thin films, we develop a geometrical model that deals with the effect of the interplay between solvent evaporation and crystal…

Engineering Quantum Wire States for Atom Scale Circuitry
Max Yuan, Lucian Livadaru, Roshan Achal, Jason Pitters, Furkan Altincicek, Robert Wolkow
https://arxiv.org/abs/2507.02123 …

Engineering Quantum Wire States for Atom Scale Circuitry
Recent advances in hydrogen lithography on silicon surfaces now enable the fabrication of complex and error-free atom-scale circuitry. The structure of atomic wires, the most basic and common circuit elements, plays a crucial role at this scale, as the exact position of each atom matters. As such, the characterization of atomic wire geometries is critical for identifying the most effective configurations. In this study, we employed low-temperature (4.5 K) scanning tunneling microscopy (STM) and…

Isotopically Selected Single Antimony Molecule Doping
Mason Adshead, Maddison Coke, Evan Tillotson, Kexue Li, Sam Sullivan-Allsop, Ricardo Egoavil, William Thornley, Yi Cui, Christopher M Gourlay, Katie L Moore, Sarah J Haigh, Richard J Curry
https://arxiv.org/abs/2509.03243

Isotopically Selected Single Antimony Molecule Doping
A reliable route to the deterministic fabrication of impurity ion donors in silicon is required to advance quantum computing architectures based upon such systems. This paper reports the ability to dope isotopically-defined unique (${}^{121}\mathrm{Sb}{}^{123}\mathrm{Sb}$) clusters into silicon with measured detection efficiencies of 94% being obtained. Atomically resolved imaging of the doped clusters reveals a Sb-to-Sb separation of ~2 nm post-implantation, thus indicating suitability to form…

Phase Coherent Transport in Two-Dimensional Tellurium Flakes
Mohammad Hafijur Rahaman, Nathan Sawyers, Mourad Benamara, Trudie Culverhouse, Repaka Maheswar, Qiyuan He, Hugh Churchill, Dharmraj Kotekar Patil
https://arxiv.org/abs/2508.19241

Phase Coherent Transport in Two-Dimensional Tellurium Flakes
Elemental tellurium (Te) is a compelling van der Waals material due to its interesting chiral crystal structure and predicted topological properties. Here, we report the fabrication and comprehensive quantum transport study of devices based on Te flakes with varying thicknesses. We demonstrate a hole mobility reaching up to 1000 cm2/V.s in a 17 nm thick flake at 30 Kelvin. At deep cryogenic temperatures (< 50mK), the transport characteristics transition from Coulomb blockade in the low carrier …

Etching-to-deposition transition in SiO$_2$/Si$_3$N$_4$ using CH$_x$F$_y$ ion-based plasma etching: An atomistic study with neural network potentials
Hyungmin An, Sangmin Oh, Dongheon Lee, Jae-hyeon Ko, Dongyean Oh, Changho Hong, Seungwu Han
https://arxiv.org/abs/2508.00327

Etching-to-deposition transition in SiO$_2$/Si$_3$N$_4$ using CH$_x$F$_y$ ion-based plasma etching: An atomistic study with neural network potentials
Plasma etching, a critical process in semiconductor fabrication, utilizes hydrofluorocarbons both as etchants and as precursors for carbon film formation, where precise control over film growth is essential for achieving high SiO$_2$/Si$_3$N$_4$ selectivity and enabling atomic layer etching. In this work, we develop neural network potentials (NNPs) to gain atomistic insights into the surface evolution of SiO$_2$ and Si$_3$N$_4$ under hydrofluorocarbon ion bombardment. To efficiently sample dive…

Magnetoresistance effect based on spin-selective transport in nanodevices using chiral molecules
Mizuki Matsuzaka, Kotaro Kashima, Koki Terai, Takumi Ueda, Ryunosuke Miyamoto, Takashi Yamamoto, Kohei Sambe, Tomoyuki Akutagawa, Hideo Kaiju
https://arxiv.org/abs/2506.23656

Magnetoresistance effect based on spin-selective transport in nanodevices using chiral molecules
Recently, chirality-induced spin selectivity (CISS) has been observed in chiral molecules and is attractive for application in magnetoresistance (MR) devices. In this study, we fabricate CISS-based nanodevices consisting of chiral molecules sandwiched between Ni78Fe22 and Au electrodes. Prior to device fabrication, we have synthesized the chiral molecule N-(3S)-3,7-dimethyloctyl[1]benzothieno[3,2-b]benzothiophene-2-carboxyamide (S-BTBT-CONHR) and established a method for fabricating nanodevice …

Non-ideal subthreshold swing in aligned carbon nanotube transistors due to variable occupancy discrete charge traps
Saurabh S. Sawant, Teo Lara, Francois Leonard, Zhi Yao, Andrew Nonaka
https://arxiv.org/abs/2507.18646

Non-ideal subthreshold swing in aligned carbon nanotube transistors due to variable occupancy discrete charge traps
Carbon nanotube transistors have been experimentally demonstrated to reach performance comparable and even surpassing that of silicon transistors. Further improvement requires addressing non-idealities arising from device fabrication that impact performance and reproducibility. One performance metric that determines energy efficiency is the subthreshold swing which is often observed to be 3-4 times larger than the ideal thermal limit. In this work, we present simulations indicating that a discr…

High-quality Tungsten-doped Vanadium Dioxide Thin Films Fabricated in an Extremely Low-oxygen Furnace Environment
Vishwa Krishna Rajan, Ken Araki, Robert Y. Wang, Liping Wang
https://arxiv.org/abs/2509.01956

High-quality Tungsten-doped Vanadium Dioxide Thin Films Fabricated in an Extremely Low-oxygen Furnace Environment
This work reports the fabrication and characterization of high-quality tungsten-doped vanadium dioxide (WxV1-xO2, x = 0~3 at. %) by thermal oxidation of sputtered tungsten-vanadium alloyed thin films with different atomic percentages and high-temperature annealing in an extremely low oxygen atmosphere (5 to 20 ppm) along with reduction of surface over-oxides in high vacuum (1 mPa). Oxidation parameters such as temperature, time and nitrogen purging rate are first optimized for obtaining high qu…

Data Driven Programming of Photonic Integrated Circuits
Gabriele Cavicchioli, Gabriele Masini, Francesco Maria Sances, Francesco Morichetti, Andrea Melloni
https://arxiv.org/abs/2508.20882

Data Driven Programming of Photonic Integrated Circuits
Programming photonic integrated hardware often reveals as a challenging task because of the presence of non-idealities in the photonic chip. These include fabrication imper- fections and parasitic effects such as thermal crosstalk, which cause unwanted coupling between control signals. Traditional control methods based on idealized models often fail to account for these phenomana, leading to significant discrepancies between the desired and actual circuit behaviour. In this work, we propose a d…

Tunable Hybrid-Mode Coupler Enabling Strong Interactions between Transmons at Centimeter-Scale Distance
Jianwen Xu, Xiang Deng, Wen Zheng, Wenchang Yan, Tao Zhang, Zhenchuan Zhang, Wanli Huang, Xiaoyu Xia, Xudong Liao, Yu Zhang, Jie Zhao, Shaoxiong Li, Xinsheng Tan, Dong Lan, Yang Yu
https://arxiv.org/abs/2506.14128

Tunable Hybrid-Mode Coupler Enabling Strong Interactions between Transmons at Centimeter-Scale Distance
The transmon, a fabrication-friendly superconducting qubit, remains a leading candidate for scalable quantum computing. Recent advances in tunable couplers have accelerated progress toward high-performance quantum processors. However, extending coherent interactions beyond millimeter scales to enhance quantum connectivity presents a critical challenge. Here, we introduce a hybrid-mode coupler exploiting resonator-transmon hybridization to simultaneously engineer the two lowest-frequency mode, e…

Monolithic optoelectronic circuit design for on-chip terahertz applications
Kateryna Kusyak, Benedikt Schulte, Toru Matsuyama, Gunda Kipp, Hope M. Bretscher, Matthew W. Day, Guido Meier, Alexander M. Potts, James W. McIver
https://arxiv.org/abs/2507.21052

Monolithic optoelectronic circuit design for on-chip terahertz applications
We demonstrate a monolithic coplanar stripline platform for on-chip terahertz (THz) generation, transmission, and detection, addressing key challenges of mode purity, bandwidth, and referencing. Capacitive coupling of the photoconductive generator switch enforces pure odd-mode propagation, increases THz field strength, and extends the operational frequency range, achieving 0.05-1.4 THz. Our architecture enables fully monolithic fabrication with amorphous silicon switches, in situ field referenc…

A Review on Improving PSC Performance through Charge Carrier Management: Where We Stand and What's Next?
Dilshod Nematov
https://arxiv.org/abs/2506.21645

A Review on Improving PSC Performance through Charge Carrier Management: Where We Stand and What's Next?
Perovskite solar cells (PSCs) represent a breakthrough in photovoltaic technology, combining high power conversion efficiencies (PCEs), ease of fabrication, and tunable optoelectronic properties. However, their commercial viability is limited by critical issues such as charge carrier recombination, interfacial defects, instability under environmental stress, and toxicity of lead-based components. This review systematically examines recent advancements in charge carrier management strategies aim…

Three-Wave Interaction Grating Coupler with Sub-Decibel Insertion Loss at Normal Incidence
Carson G. Valdez, Simon A. Bongarz, Anne R. Kroo, Anna J. Miller, Michel J. F. Digonnet, David A. B. Miller, Olav Solgaard
https://arxiv.org/abs/2506.19242

Three-Wave Interaction Grating Coupler with Sub-Decibel Insertion Loss at Normal Incidence
We report the design, fabrication in a commercial foundry, and experimental results of high-efficiency, normal incidence grating couplers for silicon photonics. We observe a maximum coupling efficiency of 85.4% (-0.69 dB) with a 1 dB bandwidth of 20 nm at a central wavelength of 1546 nm. These experimental results verify earlier theoretical and simulation results and pave the way for the use of perfectly vertical grating couplers, as an alternative to edge coupling, in silicon photonics applica…

300 mm Wafer-Scale SiN Platform for Broadband Soliton Microcombs Compatible with Alkali Atomic References
Shao-Chien Ou, Alin Antohe, Lewis G. Carpenter, Gregory Moille, Kartik Srinivasan
https://arxiv.org/abs/2506.20895

300 mm Wafer-Scale SiN Platform for Broadband Soliton Microcombs Compatible with Alkali Atomic References
Chip-integrated optical frequency combs (OFCs) based on Kerr nonlinear resonators are of great significance given their scalability and wide range of applications. Broadband on-chip OFCs reaching visible wavelengths are especially valuable as they address atomic clock transitions that play an important role in position, navigation, and timing infrastructure. Silicon nitride (SiN) deposited via low pressure chemical vapor deposition (LPCVD) is the usual platform for the fabrication of chip-integ…

Revisiting THz absorption in GO and rGO liquid crystalline films
A. Vasilev, M. Zhezhu, H. Parsamyan, G. Baghdasaryan, M. Sargsyan, D. A. Ghazaryan, H. Gharagulyan
https://arxiv.org/abs/2507.21535

Revisiting THz absorption in GO and rGO liquid crystalline films
With a swift progress in modern high-throughput communication systems, security, sensing and medicine utilizing THz range technologies, the demand for easy-to-fabricate, lightweight and high-performance absorbing materials has increased drastically. Notably, traditional approaches of eliminating unwanted radiation based on metasurfaces often face fabrication challenges limiting their practicality. In this study, we propose a straightforward approach for fabricating graphene oxide (GO) and reduc…

Ferroelectricity in 6 Angstrom-Thick Two-dimensional Ga$_2$O$_3$
Tong Jiang (School of Materials Science and Engineering, Zhejiang University, Hangzhou, China, Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, China, School of Engineering, Westlake University, Hangzhou, Zhejiang, China), Han Chen (School of Materials Science and Engineering, Zhejiang University, Hangzhou, China, Key Laboratory of…

Ferroelectricity in 6 Angstrom-Thick Two-dimensional Ga$_2$O$_3$
Atomic-scale ferroelectric thin films hold great promise for high-density, low-power applications but face stability and voltage scaling challenges at extreme thinness. Here, we demonstrate ferroelectricity in single-crystalline two-dimensional (2D) Ga$_2$O$_3$, an ultra-wide-bandgap semiconductor, at just 6 angstrom thickness, exhibiting exceptional retention and thermal stability. We show that epitaxial beta-Ga$_2$O$_3$ can be exfoliated down to a half-unit cell thickness via a self-limiting …

Enhanced Absorption in Thin-Film Silicon Solar Cells Using a Broadband Plasmonic Nanostructure
Partha Mondal, Omar Alkhazragi, Hakan Bagci
https://arxiv.org/abs/2506.16118

Enhanced Absorption in Thin-Film Silicon Solar Cells Using a Broadband Plasmonic Nanostructure
The design and fabrication of a metal-dielectric-metal absorber that achieves strong absorption from the ultraviolet (UV) to the near-infrared (near-IR) spectrum are presented. The proposed nanostructure consists of a periodic titanium (Ti) array as the top layer, a thin silicon dioxide (SiO2) spacer, and a continuous aluminum (Al) layer serving as the back reflector. Comprehensive optimization of structural parameters results in an average absorptance of 96% in the 280-1000 nm wavelength range…

Far-field directionality control of coupled InP nanowire lasers
Lukas R. J\"ager (Friedrich Schiller University Jena, Australian National University), Wei Wen Wong (Australian National University), Carsten Ronning (Friedrich Schiller University Jena), Hark Hoe Tan (Australian National University)
https://arxiv.org/abs/2507.18416

Far-field directionality control of coupled InP nanowire lasers
Nanowire (NW) lasers hold great promise as compact, coherent on-chip light sources that are crucial for next-generation optical communication and imaging technologies. However, controlling their emission directionality has been hindered by the complexities of lasing mode engineering and fabrication. Here, we demonstrate spatially-engineered far-field emission from vertically emitting InP NW lasers by establishing precise control over the optical coupling between site-selective NWs, without rely…

Atomistic Structure of Transient Switching States in Ferroelectric AlScN
Jiawei Huang, Jinyang Li, Xinyue Guo, Tongqi Wen, David J. Srolovitz, Zhen Chen, Zuhuang Chen, Shi Liu
https://arxiv.org/abs/2508.18241

Atomistic Structure of Transient Switching States in Ferroelectric AlScN
We resolve the microscopic mechanism of polarization switching in wurtzite ferroelectric AlScN by integrating advanced thin-film fabrication, ferroelectric switching dynamics characterizations, high-resolution scanning transmission electron microscopy (STEM), and large-scale molecular dynamics simulations enabled by a deep neural network-based interatomic potential. Contrary to earlier interpretations proposing a transient nonpolar intermediate phase, we demonstrate that the broad transitional …

Intrinsic Strain-Driven Topological Evolution in SrRuO3 via Flexural Strain Engineering
Liguang Gong, Hongping Jiang, Bin Lao, Xuan Zheng, Xuejiao Chen, Zhicheng Zhong, Yan Sun, Xianfeng Hao, Milan Radovic, Run-Wei Li, Zhiming Wang
https://arxiv.org/abs/2508.16084

Intrinsic Strain-Driven Topological Evolution in SrRuO3 via Flexural Strain Engineering
Strain engineering offers a powerful route to tailor topological electronic structures in correlated oxides, yet conventional epitaxial strain approaches introduce extrinsic factors such as substrate-induced phase transitions and crystalline quality variations, which makes the unambiguous identification of the intrinsic strain effects challenging. Here, we develop a flexural strain platform based on van der Waals epitaxy and flexible micro-fabrication, enabling precise isolation and quantificat…