Tootfinder

Open-Source Thermostatic Radiator Valve (OpenTRV) - OpenTRV retrofit open-source reference mechanical/hardware/software design for zoned heating to save carbon and money. #OpenTRV #TRV #heating

Open-Source Thermostatic Radiator Valve (OpenTRV)
OpenTRV retrofit open-source reference mechanical/hardware/software design for zoned heating to save carbon and money. #OpenTRV #TRV #heating #cutCarbon

Ohgottogott: #Commodore64

Moody Urbanity - Old & New IV 🔆
情绪化城市 - 新与旧 IV 🔆
📷 Nikon FE
🎞️ Ilford HP5 Plus 400, expired 1993
#filmphotography #Photography #blackandwhite

Material Synthesis 2025 (MatSyn25) Dataset for 2D Materials
Chengbo Li, Ying Wang, Qianying Wang, Zhizhi Tan, Haiqing Jia, Yi Liu, Li Qian, Nian Ran, Jianjun Liu, Zhixiong Zhang
https://arxiv.org/abs/2510.00776

Material Synthesis 2025 (MatSyn25) Dataset for 2D Materials
Two-dimensional (2D) materials have shown broad application prospects in fields such as energy, environment, and aerospace owing to their unique electrical, mechanical, thermal and other properties. With the development of artificial intelligence (AI), the discovery and design of novel 2D materials have been significantly accelerated. However, due to the lack of basic theories of material synthesis, identifying reliable synthesis processes for theoretically designed materials is a challenge. Th…

Full-Field Brillouin Microscopy with a Scanning Fabry-Perot Interferometer
Mikolaj Pochylski (Faculty of Physics,Astronomy, Adam Mickiewicz University, Poznan, Poland)
https://arxiv.org/abs/2510.00700 …

Full-Field Brillouin Microscopy with a Scanning Fabry-Perot Interferometer
Brillouin microscopy is an emerging optical technique for probing mechanical properties with submicron resolution, offering fully non-contact, label-free operation. Despite its unique capabilities, broader adoption has been limited by slow acquisition speeds, particularly in systems based on scanning Fabry-Perot interferometers (FPIs). Based on prior implementations, FPIs have typically been considered too slow for practical imaging, particularly when both spatial and spectral precision are req…

Xiaomi unveils $999 17 Ultra in China with three rear cameras, including a 50MP 1" sensor and a 200MP periscope lens; Leica edition gets a mechanical zoom ring (Siddharth/GSMArena.com)
https://www.gsmarena.com/xiaomi_17_ultra_p

Xiaomi 17 Ultra packs a 1-inch sensor, 200MP periscope telephoto, and a 6,800mAh battery
There’s also a Leica edition with a dual-tone design and a mechanical zoom ring. The Xiaomi 17 Ultra has finally been unveiled in China as the brand’s...

Micro-Electro-Mechanical System Vapor Cells With Passivated Internal Cavities
Rajesh Pandiyan, Sanyasi Bobbara, Somayeh Mirzaee, Su-Peng Yu, Ruoxi Wang, Adam Sibenik, Reza Kohandani, James P. Shaffer
https://arxiv.org/abs/2512.00245

MHRV (Mechanical Heat-Recovery Ventilation) and HR25H Review - Is MHRV right for you? Learn from our years with the Vent-Axia humidistat HR25. #frugal #cutCarbon -

MHRV (Mechanical Heat-Recovery Ventilation) and HR25H Review
Is MHRV right for you? Learn from our years with the Vent-Axia humidistat HR25. #frugal #cutCarbon

Continuum Fractons: Quantization and the Many Body Problem
Ylias Sadki, Abhishodh Prakash, S. L. Sondhi
https://arxiv.org/abs/2510.00110 https://arxiv.org/…

Continuum Fractons: Quantization and the Many Body Problem
We formulate a continuum quantum mechanics for non-relativistic, dipole-conserving fractons. Imposing symmetries and locality results in novel phenomena absent in ordinary quantum mechanical systems. A single fracton has a vanishing Hamiltonian, and thus its spectrum is entirely composed of zero modes. For the two-body problem, the Hamiltonian is perfectly described by Sturm--Liouville (SL) theory. The effective two-body Hamiltonian is an SL operator on $(-1,1)$ whose spectral type is set by th…

@… Yes, same thing with my office (in the same building). Mechanical ventilation makes a huge difference.

@… Yes, same thing with my office (in the same building). Mechanical ventilation makes a huge difference.

ELIGANT-TN -- ELI Gamma Above Neutron Threshold: The Thermal Neutron setup
P. -A. S\"oderstr\"om, D. L. Balabanski, M. Cuciuc, D. M. Filipescu, I. Gheorghe, A. Ku\c{s}o\u{g}lu, C. Matei, D. Testov, S. Aogaki, H. T. Aslani, L. Capponi, D. Choudhury, G. Ciocan, T. Glodariu, M. Krzysiek, V. Lelasseux, R. Roy, R. F. Andrei, M. Brezeanu, R. Corbu, A. Dhal, D. Iancu, D. Kahl, S. Ioannidis, K. KeunHwan, G. Lorusso, B. Mauyey, T. Petruse, G. V. Turturic\u{a}

ELIGANT-TN -- ELI Gamma Above Neutron Threshold: The Thermal Neutron setup
Here we present the thermal neutron counter from the ELI Gamma Above Neutron Threshold setup recently implemented at the Extreme Light Infrastructure - Nuclear Physics. The main goals of the detector array are presented, as well as the mechanical design, electronics, and the performance of the detectors. In addition, we have performed Geant4 and MCNP simulations monoenergetic neutrons and measurements with typical neutron sources. Finally, we show the performance of the array as a whole and out…

The year 2025 was the year I finally fulfilled my destiny and became a bureacrat — I couldn't be happier! White shirt, red tie, brown belt, mechanical in my approach to things. I love spreadsheets, files, book-keeping, accounting, finances.
Most of what I do in a day is read E-Mails, fill out forms, write documents, read documents, call and text people. I have a desk, a printer, get a tea in the morning.
All this with the added spice that I often write press releases, get cuttin…

“This is the most complicated thing that you could possibly imagine,” said Mike Williams, a physicist at the Massachusetts Institute of Technology.
“In fact, you can’t even imagine how complicated it is.”
The proton is a quantum mechanical object that exists as a haze of probabilities until an experiment forces it to take a concrete form.
And its forms differ drastically depending on how researchers set up their experiment.
Connecting the particle’s many faces has …

🍔 Thermal, Mechanical, And Material Stresses Grow With Die Stacking
https://semiengineering.com/thermal-mechanical-and-material-stresses-grow-with-die-stacking/

Thermal, Mechanical, And Material Stresses Grow With Die Stacking
More analysis and more data are needed to predict how different dies will interact in the same package.

Replaced article(s) found for physics.optics. https://arxiv.org/list/physics.optics/new
[1/1]:
- Mechanical loss and stability analysis of NEXCERA in ultra-stable optical cavities
Nico Wagner, Mateusz Naro\.znik, Marcin Bober, Steffen Sauer, Micha{\l} Zawada, Stefanie Kroke…

For better or worse, I’ve had a revelation re: low-profile mechanical keyboards:
Low-Profile Gateron Mechanical Brown switches are at best uninspiring. I’ve gotten to know these via the Keychron K3. It’s fine, but mushy. In the future I will probably skip low-profile mechanical switches altogether.

today i watched the entirety of malice@doll for the first time, and so when i opened up a chocolate x pretzel snack bag from christmas and saw it all melted and mangled into clumps from the road, i imagined each like it was one of the mechanical x organic amalgamations

The youtube channel of Vietnamese engineer Nguyen Duc Thang is a really soothing way to relax. He has simple animated videos for hundreds of mechanical contraptions. From the most basic gearbox to some inventions that seem to be overly complex but brilliant at the same time.
Like this "push to lock and unlock" mechanism here:
https://www.

Ukrainian drones attack oil refinery, mechanical plant in Russia, media reports: https://benborges.xyz/2025/10/22/ukrainian-drones-attack-oil-refinery.html

Influence of coronary plaque morphology on local mechanical states and associated in-stent restenosis
Janina C. Datz, Ivo Steinbrecher, Johannes Krefting, Leif-Christopher Engel, Alexander Popp, Martin R. Pfaller, Heribert Schunkert, Wolfgang A. Wall
https://arxiv.org/abs/2510.10763

Influence of coronary plaque morphology on local mechanical states and associated in-stent restenosis
In-stent restenosis after percutaneous coronary intervention is a multifactorial process. Specific morphological lesion characteristics were observed to contribute to the occurrence of in-stent restenosis. Local mechanical factors, such as stresses and strains, are known to influence tissue adaptation after stent implantation. However, the influence of morphological features on those local mechanical states and, hence, on the occurrence of in-stent restenosis remains understudied. This work inv…

Enhancing Optomechanical Entanglement and Mechanical Squeezing by the Synergistic Effect of Quadratic Optomechanical Coupling and Coherent Feedback
Ya-Feng Jiao, Ruo-Chen Wang, Jing-Xue Liu, Hui-Lai Zhang, Ya-Chuan Liang, Yan Wang, Le-Man Kuang, Hui Jing
https://arxiv.org/abs/2510.04732

Enhancing Optomechanical Entanglement and Mechanical Squeezing by the Synergistic Effect of Quadratic Optomechanical Coupling and Coherent Feedback
Quantum entanglement and squeezing associated with the motions of massive mechanical oscillators play an essential role in both fundamental science and emerging quantum technologies, yet realizing such macroscopic nonclassical states remains a formidable challenge. In this paper, we investigate how to achieve strong optomechanical entanglement and mechanical squeezing in a membrane-embedded cavity optomechanical system incorporating a coherent feedback loop, where the membrane interacts with th…

The Mechanical Yes-Man: Emancipatory AI Pedagogy in Higher Education
Linda Rocco
https://arxiv.org/abs/2510.10176 https://arxiv.org/pdf/2510.10176

The Mechanical Yes-Man: Emancipatory AI Pedagogy in Higher Education
The proliferation of Large Language Models in higher education presents a fundamental challenge to traditional pedagogical frameworks. Drawing on Jacques Rancière's theory of intellectual emancipation, this paper examines how generative AI risks becoming a "mechanical yes-man" that reinforces passivity rather than fostering intellectual autonomy. Generative AI's statistical logic and lack of causal reasoning, combined with frictionless information access, threatens to hollow out cognitive proc…

MHRV (Mechanical Heat-Recovery Ventilation) and HR25H Review - Is MHRV right for you? Learn from our years with the Vent-Axia humidistat HR25. #frugal #cutCarbon -

MHRV (Mechanical Heat-Recovery Ventilation) and HR25H Review
Is MHRV right for you? Learn from our years with the Vent-Axia humidistat HR25. #frugal #cutCarbon

Endra, whose AI tools automate mechanical, electrical, and plumbing design for commercial buildings, raised a $20M seed led by Notion (Jeremy Kahn/Fortune)
https://fortune.com/2025/12/18/endra-ai-startup-automating-mep-design…

Exclusive: Swedish startup automating mechanical, electrical, and plumbing design for commercial buildings raises $20 million in seed round
Notion Capital is leading the seed round for Endra, which says reduces the time to design buildings' electrical systems from months to hours.

I just fell down a history hole due to how we celebrate Christmas Eve today and how many folks don’t get around to it until tomorrow. It is mildly fascinating and boils down to: Before mechanical watches were a thing, a new day was counted from when the sun went down. So the 25th starts on what is now the 24th. You can still see traces of it in language such as in fortnight:

A controllable anti-P-pseudo-Hermitian mechanical system and its application
Yanzheng Wang (Huanjiang Laboratory, Zhejiang University, Department of Mechanical and Aerospace Engineering, University of Missouri), Jianlei Zhao (Department of Mechanics and Engineering Science, Peking University), Qian Wu (Department of Mechanical and Aerospace Engineering, University of Missouri), Xiaoming Zhou (Key Laboratory of Dynamics and Control of Flight Vehicle of Ministry of Education, School of A…

A controllable anti-P-pseudo-Hermitian mechanical system and its application
A novel anti-P-pseudo-Hermitian mechanical system that integrates piezoelectric actuators and sensors with non-reciprocal coupling into mechanical beams is proposed. This configuration enables the system to exhibit programmable exceptional points (EPs), which are critical for enhancing sensitivity in sensing applications. Our theoretical analysis, supported by numerical simulations and experimental validation, demonstrates the system's capability to detect minute mass variations and identify su…

Toggling stiffness via multistability
Hugo de Souza Oliveira, Michele Curatolo, Renate Sachse, Edoardo Milana
https://arxiv.org/abs/2510.09511 https://arxi…

Toggling stiffness via multistability
Mechanical metamaterials enable unconventional and programmable mechanical responses through structural design rather than material composition. In this work, we introduce a multistable mechanical metamaterial that exhibits a toggleable stiffness effect, where the effective shear stiffness switches discretely between stable configurations. The mechanical analysis of surrogate beam models of the unit cell reveal that this behavior originates from the rotation transmitted by the support beams to …

I blogged about my cute little open source computer, the #mntpocketreform, and how it is connected to the idea of #permacomputing.
https://

PVS-Studio blog writer Georgii Tormozov summarizes a long list of improvements made to Microsoft's next LTS (and anniversary release) .NET 10. This overview highlights support for C# 14, performance enhancements, new libraries (including post-quantum crypto.), runtime and SDK. A good read to keep up with the latest and greatest in .NET.
"What's new in .NET 10"

Effect of viscoelasticity on electrohydrodynamic drop deformation
Santanu Kumar Das (Department of Mechanical Engineering, Indian Institute of Technology, Guwahati, 781039, Assam, India), Sarika Shivaji Bangar (Department of Mechanical Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India), Amaresh Dalal (Department of Mechanical Engineering, Indian Institute of Technology, Guwahati, 781039, Assam, India), Gaurav Tomar (Department of Mechanical Engineering, Indi…

Effect of viscoelasticity on electrohydrodynamic drop deformation
The impact of viscoelasticity on drop deformation in the presence of an electric field is investigated using both analytical and numerical methods. The study focuses on two configurations: a viscoelastic drop suspended in a Newtonian fluid and a Newtonian drop suspended in a viscoelastic medium. Oldroyd-B constitutive equation is employed to model constant viscosity viscoelasticity. Effect of Deborah number (ratio of polymer relaxation time to convective time scale) on drop deformation is studi…

Vikings' team plane returns to airport after takeoff https://www.espn.com/nfl/story/_/id/47372749/vikings-team-plane-returns-minneapolis-takeoff

"Biodegradable Plastic Made from Bamboo Is Stronger and Easy to Recycle"
#Bamboo #Plastic #Plastics

Biodegradable Plastic Made from Bamboo Is Stronger and Easy to Recycle
The rigid yet biodegradable plastic outperforms not only alternative biodegradable options, but plastic itself for mechanical strength.

I set the time on this pocket watch five days ago when I arrived in Iceland (due to the time change from Norway). Since then I have lost 2 seconds when compared with an accurate time source online. That is crazy good for a mechanical watch.

MHRV (Mechanical Heat-Recovery Ventilation) and HR25H Review - Is MHRV right for you? Learn from our years with the Vent-Axia humidistat HR25. #frugal #cutCarbon -

MHRV (Mechanical Heat-Recovery Ventilation) and HR25H Review
Is MHRV right for you? Learn from our years with the Vent-Axia humidistat HR25. #frugal #cutCarbon

QCell: Comprehensive Quantum-Mechanical Dataset Spanning Diverse Biomolecular Fragments
Adil Kabylda, Sergio Su\'arez-Dou, Nils Davoine, Florian N. Br\"unig, Alexandre Tkatchenko
https://arxiv.org/abs/2510.09939

QCell: Comprehensive Quantum-Mechanical Dataset Spanning Diverse Biomolecular Fragments
Recent advances in machine learning force fields (MLFFs) are revolutionizing molecular simulations by bridging the gap between quantum-mechanical (QM) accuracy and the computational efficiency of mechanistic potentials. However, the development of reliable MLFFs for biomolecular systems remains constrained by the scarcity of high-quality, chemically diverse QM datasets that span all of the major classes of biomolecules expressed in living cells. Crucially, such a comprehensive dataset must be c…

Urban Spots II ✴️
城市噪点 II ✴️
📷 Nikon F4E
🎞️ Ilford HP5 Plus 400, expired 1993
#filmphotography #Photography #blackandwhite

Edit: Found− https://chaos.social/@dena/115367061858033151
Okay, Fediverse, I need your help. I'm looking for a website which explained (besides other things) how a watch clockwork worked. It was full of animated exploded-view drawings, even some interactive elements. It was a l…

Open-Source Thermostatic Radiator Valve (OpenTRV) - OpenTRV retrofit open-source reference mechanical/hardware/software design for zoned heating to save carbon and money. #OpenTRV #TRV #heating

Three academics affiliated with U.S. universities have been awarded the
2025 Nobel Prize in Physics
“for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit,”
the Royal Swedish Academy of Sciences announcedTuesday morning.
British physicist John Clarke, a professor of experimental physics at the University of California, Berkeley;
French physicist Michel Devoret, professor emeritus of applied physics at Ya…

3 Academics Share Nobel Prize in Physics
Three academics affiliated with U.S. universities have been awarded the 2025 Nobel Prize in Physics “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit,” the Royal Swedish Academy of Sciences announced Tuesday morning.

Some Reflections on Sliding Mode Designs in Control Systems: An Example of Adaptive Tracking Control for Simple Mechanical Systems With Friction Without Measurement of Velocity
Romeo Ortega, Leyan Fang, Jose Guadalupe Romero
https://arxiv.org/abs/2510.07675

Some Reflections on Sliding Mode Designs in Control Systems: An Example of Adaptive Tracking Control for Simple Mechanical Systems With Friction Without Measurement of Velocity
The objective of this note is to share some reflections of the authors regarding the use of sliding mode designs in control systems. We believe the abundant, and ever increasing, appearance of this kind of works on our scientific publications deserves some critical evaluation of their actual role, relevance and pertinence. First, we discuss the procedure followed by most of these designs -- illustrated with examples from the literature. Second, we bring to the readers attention several aspects …

Constructing a Nanopipette-based DNA Electro-Mechanical Device
Cengiz J. Khan, Oliver J. Irving, Rand A. Al-Waqfi, Giorgio Ferrari, Tim Albrecht
https://arxiv.org/abs/2510.10515

Constructing a Nanopipette-based DNA Electro-Mechanical Device
Solid-state nanopore and nanopipette sensors are powerful devices for the detection, quantification and structural analysis of biopolymers such as DNA and proteins, especially in carrier-enhanced resistive-pulse sensing. However, hundreds of different molecules typically need to be sampled from solution and analysed to obtain statistically robust information. This limits the applicability of such sensors and complicates associated workflows. Here, we present a new strategy to trap DNA structure…

Series D, Episode 02 - Power
TARRANT: [Disbelieving] Telekinesis?
ORAC: The power to move objects at a distance using only the mind-
DAYNA: [Cutting him off] Yes, we know what it means.
https://blake.torpidity.net/m/402/445 B7B2

20 minutes until my appointment, using the time to put the finishing touches on the assignment for this week…
#AcademicChatter #MechanicalKeyboard

Are you tired of illuminated gaming keyboards, and even the clacking sound of mechanical keyboards has lost their appeal?
Fear not, there's hope:
Gboard Dial
https://github.com/google/mozc-devices/tree/main/mozc-dial

Harmonic fields and the mechanical response of a cellular monolayer to ablation
Oliver E. Jensen, Christopher K. Revell
https://arxiv.org/abs/2510.05193 https://

Harmonic fields and the mechanical response of a cellular monolayer to ablation
Multicellular tissues, such as the epithelium coating a developing embryo, often combine complex tissue shapes with heterogeneity in the spatial arrangement of individual cells. Discrete approximations, such as the cell vertex model, can accommodate these geometric features, but techniques for analysis of such models are underdeveloped. Here, we express differential operators defined on a network representing a monolayer of confluent cells in the framework of discrete exterior calculus, conside…

@… draw for me a vivid photograph of a middle aged man having a transparent head revealing a mechanical brain that is lit up in different colours. Beside him there is a robot cat with lit blue eyes. Tje background is an empty room

Dispersion relations: foundations
Bastian Kubis
https://arxiv.org/abs/2510.01962 https://arxiv.org/pdf/2510.01962…

Dispersion relations: foundations
We give a pedagogical introduction to the founding ideas of dispersion relations in particle physics. Starting from elementary mechanical systems, we show how the physical principle of causality is closely related to the mathematical property of analyticity, and how both are implemented in quantum mechanical scattering theory. We present a personal selection of elementary applications such as the relation between hadronic production amplitudes or form factors to scattering, and the extraction o…

MHRV (Mechanical Heat-Recovery Ventilation) and HR25H Review - Is MHRV right for you? Learn from our years with the Vent-Axia humidistat HR25. #frugal #cutCarbon -

MHRV (Mechanical Heat-Recovery Ventilation) and HR25H Review
Is MHRV right for you? Learn from our years with the Vent-Axia humidistat HR25. #frugal #cutCarbon

"If George Boole is the 19th century’s AI scientist, then his contemporary machine learning engineers were Charles Babbage and Ada Lovelace. The Difference Engine, which would be frequently cited as the first example of a (mechanical) programmable digital computer if it had been built at the time, was explicitly designed to _replace_ rather than _augment_ human thought. Just as modern software engineering managers use Jira to avoid thinking about process engineering."

Douglas Hofstadter
You may be worried that I am going to talk about an author of books that are not about programming, and you are correct and incorrect. Correct, in that Hofstadter's books are not about programming (the intellectually hollow like to claim that they are not about anything at all, or that if you think you know what they are about then you did not understand them; this is untrue). Incorrect, in that Hofstadter's books and computer programs themselves are about the same thing.

Promoting arm movement practice with a novel wheelchair armrest early after stroke: A randomized controlled trial
Sangjoon J. Kim (Bionics Research Center, Korea Institute of Science and Technology, Department of Mechanical and Aerospace Engineering, University of California-Irvine, Irvine, CA, USA), Vicky Chan (Department of Mechanical and Aerospace Engineering, University of California-Irvine, Irvine, CA, USA), Niko Fullmer (Casa Colina Research Institute, Casa Colina Hospital and Ce…

Promoting arm movement practice with a novel wheelchair armrest early after stroke: A randomized controlled trial
Chronic upper extremity (UE) impairment is common after stroke. This study evaluated Boost, a novel wheelchair-mounted rehabilitation device designed to assist individuals in UE motor recovery during inpatient rehabilitation. Thirty-five stroke inpatients were randomized to perform additional UE exercises alongside standard therapy, using either Boost or a therapist-customized booklet for self-practice. Outcomes included the UE Fugl-Meyer (UEFM) Exam, Box and Block Test, Motor Activity Log, Mod…

Quantum-enhanced Computer Vision: Going Beyond Classical Algorithms
Natacha Kuete Meli, Shuteng Wang, Marcel Seelbach Benkner, Michele Sasdelli, Tat-Jun Chin, Tolga Birdal, Michael Moeller, Vladislav Golyanik
https://arxiv.org/abs/2510.07317

Quantum-enhanced Computer Vision: Going Beyond Classical Algorithms
Quantum-enhanced Computer Vision (QeCV) is a new research field at the intersection of computer vision, optimisation theory, machine learning and quantum computing. It has high potential to transform how visual signals are processed and interpreted with the help of quantum computing that leverages quantum-mechanical effects in computations inaccessible to classical (i.e. non-quantum) computers. In scenarios where existing non-quantum methods cannot find a solution in a reasonable time or comput…

ATOM: A Pretrained Neural Operator for Multitask Molecular Dynamics
Luke Thompson, Davy Guan, Dai Shi, Slade Matthews, Junbin Gao, Andi Han
https://arxiv.org/abs/2510.05482 http…

ATOM: A Pretrained Neural Operator for Multitask Molecular Dynamics
Molecular dynamics (MD) simulations underpin modern computational drug dis- covery, materials science, and biochemistry. Recent machine learning models provide high-fidelity MD predictions without the need to repeatedly solve quantum mechanical forces, enabling significant speedups over conventional pipelines. Yet many such methods typically enforce strict equivariance and rely on sequential rollouts, thus limiting their flexibility and simulation efficiency. They are also com- monly single-tas…

Transient thermo-elasto-hydrodynamic study of herringbone-grooved mechanical face seal during start-up stage
Yongfan Li (TriboLub, D\'epartement GMSC, PPrime [Poitiers]), Muming Hao (TriboLub, D\'epartement GMSC, PPrime [Poitiers]), No\"el Bruneti\`ere (TriboLub, D\'epartement GMSC, PPrime [Poitiers]), Qiang Li, Jiasheng Wang, Baojie Ren
https:…

Transient thermo-elasto-hydrodynamic study of herringbone-grooved mechanical face seal during start-up stage
A comprehensive numerical solution is developed for the transient thermo-elasto-hydrodynamic (TEHD) characteristics of mechanical face seals. Transient lubrication features of the fluid film, transient thermal deformation features of the seal rings, dynamic behavior, and rough faces contacting are coupled. The finite volume method is utilized for the fluid film solution, and the Duhamel's principle contributes to calculation of the time-varying solid properties. An overall flowchart for the num…

Weekend #Plankton Factoid 🦠🦐
While crustaceans are common as #zooplankton, insects are very rare, but one group is found globally in freshwaters. Chaoborus (phantom midge or glassworm) spend the majority of their life as predaceous plankton, but are familiar to many when the adults emerge lake…

Elastic Rod Origami (RodOri) for Programming Static and Dynamic Mechanical Properties
Sophie Leanza, Jeseung Lee, Ruike Renee Zhao
https://arxiv.org/abs/2510.11568 https://

Elastic Rod Origami (RodOri) for Programming Static and Dynamic Mechanical Properties
Reconfigurable mechanical systems enable precise programmable control over structural properties, opening new opportunities in architected materials, adaptive devices, and multifunctional structures. Here, we introduce elastic rod origami (RodOri), a platform that exploits remarkably simple elements (pre-stressed, naturally curved rods) into a system with an extraordinary degree of multistability and configurational richness. For example, a single 6-rod RodOri unit can easily access 11 distinct…

Gamma-rays from Wolf-Rayet stellar winds
A. Inventar, G. Peron, S. Recchia, S. Gabici
https://arxiv.org/abs/2510.12510 https://arxiv.org/pdf/2510.12510

Gamma-rays from Wolf-Rayet stellar winds
Gamma-ray observations of young star clusters have recently provided evidence for particle acceleration occurring at stellar wind termination shocks, fueled by the mechanical energy of stellar winds from massive stars. In this work, we explore the possibility that the wind from a single powerful star, whether isolated or part of a cluster, can alone provide sufficient energy to generate gamma-ray emission detectable by current instruments. This scenario is particularly relevant given that a sig…

A Co-Design Framework for Energy-Aware Monoped Jumping with Detailed Actuator Modeling
Aman Singh, Aastha Mishra, Deepak Kapa, Suryank Joshi, Shishir Kolathaya
https://arxiv.org/abs/2510.05923

A Co-Design Framework for Energy-Aware Monoped Jumping with Detailed Actuator Modeling
A monoped's jump height and energy consumption depend on both, its mechanical design and control strategy. Existing co-design frameworks typically optimize for either maximum height or minimum energy, neglecting their trade-off. They also often omit gearbox parameter optimization and use oversimplified actuator mass models, producing designs difficult to replicate in practice. In this work, we introduce a novel three-stage co-design optimization framework that jointly maximizes jump height whil…

The dawn of alchemical free-energy methods in biomolecular simulations
Daniele Macuglia, Giovanni Ciccotti, Beno\^it Roux
https://arxiv.org/abs/2510.04917 https://

The dawn of alchemical free-energy methods in biomolecular simulations
From the onset of fundamental statistical mechanical constructs formulated in the late 19th century, alchemical free-energy methods slowly emerged and transitioned to become operational tools of biomolecular simulation applicable to a wide range of problems including protein-ligand binding for drug discovery research. This article reconstructs how statistical mechanical approaches such as thermodynamic integration and free-energy perturbation were reconfigured in the early 1980's to address the…

Replaced article(s) found for math.NA. https://arxiv.org/list/math.NA/new
[1/1]:
- Mathematical modeling of the mechanical behavior of three-layer plates with a tetrachiral honeyco...
A. V. Mazaev

"New Teflon Recycling Method Turns The “Forever Chemical” into Toothpaste "
#PFAS #ForeverChemicals
https://

New Teflon Recycling Method Turns The “Forever Chemical” into Toothpaste  | Happy Eco News
Scientists from Newcastle University and the University of Birmingham developed a room-temperature Teflon recycling method that turns Teflon waste into sodium fluoride using mechanical shaking with sodium metal. The process breaks strong carbon-fluorine bonds without heat or solvents, producing pure sodium fluoride for toothpaste, water treatment, and pharmaceutical applications.

Mechanical coupling of polar topologies and oxygen octahedra rotations in PbTiO$_3$/SrTiO$_3$ superlattices
Fernando G\'omez-Ortiz, Louis Bastogne, Xu He, Philippe Ghosez
https://arxiv.org/abs/2510.08216

Mechanical coupling of polar topologies and oxygen octahedra rotations in PbTiO$_3$/SrTiO$_3$ superlattices
PbTiO$_3$/SrTiO$_3$ artificial superlattices recently emerged as a prototypical platform for the emergence and study of polar topologies. While previous studies mainly focused on the polar textures inherent to the ferroelectric PbTiO$_3$ layers, the oxygen octahedra rotations inherent to the paraelectric SrTiO$_3$ layers have attracted much little attention. Here, we highlight a biunivocal relationship between distinct polar topologies -- including $a_1/a_2$ domains, polar vortices, and skyrmio…

Dimension dependence of critical phenomena in long-range percolation
Tom Hutchcroft
https://arxiv.org/abs/2510.03951 https://arxiv.org/pdf/2510.03951

Dimension dependence of critical phenomena in long-range percolation
Statistical mechanical systems at and near their points of phase transition are expected to exhibit rich, fractal-like behaviour that is independent of the small-scale details of the system but depends strongly on the dimension in which the model is defined. Moreover, many models are conjectured to have an upper critical dimension with important quantitative and qualitative differences between critical behaviour at, above, and below the upper critical dimension. For models with long-range inter…

Modelling of magnetic vortex microdisc dynamics under varying magnetic field in biological viscoelastic environments
Andrea Vison\`a, Robert Morel, H\'el\`ene Joisten, Bernard Dieny, Alice Nicolas
https://arxiv.org/abs/2510.11906

Modelling of magnetic vortex microdisc dynamics under varying magnetic field in biological viscoelastic environments
Magnetically driven microparticles provide a versatile platform for probing and manipulating biological systems, yet the physical framework governing their actuation in complex environments remains only partially explored. Within the field of cellular magneto-mechanical stimulation, vortex microdiscs have emerged as particularly promising candidates for developing novel therapeutic approaches. Here, we introduce a simplified two-dimensional model describing the magneto-mechanical response of su…

MHRV (Mechanical Heat-Recovery Ventilation) and HR25H Review - Is MHRV right for you? Learn from our years with the Vent-Axia humidistat HR25. #frugal #cutCarbon -

MHRV (Mechanical Heat-Recovery Ventilation) and HR25H Review
Is MHRV right for you? Learn from our years with the Vent-Axia humidistat HR25. #frugal #cutCarbon

#Blakes7 Series A, Episode 05 - The Web
NOVARA: A simple mental process known to the ancients. We have developed and refined it. It is more reliable than mechanical transmissions.
BLAKE: You said you have a way to free us from the web.
https://

Dispersion in Analogue Gravity
Eren Erberk Erkul, Ulf Leonhardt
https://arxiv.org/abs/2510.02542 https://arxiv.org/pdf/2510.02542

Dispersion in Analogue Gravity
Analogue models of gravity, from Newton to Unruh, have evolved from simple fluid--mechanical models to sophisticated modern experiments. They have shown the robustness of Hawking radiation and highlighted the role of dispersion for quantum fields in curved space. We speculate whether some underlying dispersion may also play a role in explaining the cosmological constant and in resolving the cosmological tensions.

High Pixel Resolution Visible to Extended Shortwave Infrared Single Pixel Imaging with a black Phosphorus-Molybdenum disulfide (bP-MoS2) photodiode
Seyed Saleh Mousavi Khaleghi, Jinyuan Chen, Sivacarendran Balendhran, Alexander Corletto, Shifan Wang, Huan Liu, James Bullock, Kenneth B. Crozier
https://arxiv.org/abs/2510.02673

High Pixel Resolution Visible to Extended Shortwave Infrared Single Pixel Imaging with a black Phosphorus-Molybdenum disulfide (bP-MoS2) photodiode
High-resolution infrared imagers are currently more expensive than CMOS and CCD cameras, due to costly sensor arrays. Van der Waals (vdWs) materials present an opportunity for low-cost, room temperature infrared photodetectors. Although photodetectors based on vdWs materials show promising performance, creating a megapixel array is yet to be achieved. Imaging with a single vdWs photodetector typically relies on time-consuming mechanical scanning and suffers from low resolution. Single pixel ima…

Comparison of typicality in quantum and classical many-body systems
Peter Reimann, Nicolas Nessi
https://arxiv.org/abs/2510.06795 https://arxiv.org/pdf/251…

Comparison of typicality in quantum and classical many-body systems
Quantum typicality refers to the phenomenon that the expectation values of any given observable are nearly identical for the overwhelming majority of all normalized vectors in a sufficiently high-dimensional Hilbert (sub-)space. As a consequence, we show that the thermal equilibrium fluctuations in many-body quantum systems can be very closely imitated by the purely quantum mechanical uncertainties (quantum fluctuations) of suitably chosen pure states. On the other hand, we find that analogous …

Mass loading of outflows from evolving Young Massive Clusters
C. J. K. Larkin, C. Hawcroft, J. Mackey, R. R. Lefever, L. H\"arer, A. A. C. Sander
https://arxiv.org/abs/2510.06100

Mass loading of outflows from evolving Young Massive Clusters
Feedback from Young Massive Clusters (YMCs) is an important driver of galaxy evolution. In the first few Myr, mechanical feedback is dominated by collective effects of the massive stellar winds in the YMC. The mass-loss rates and terminal wind velocities of these stars change by orders of magnitude over pre-SN timescales as the massive stars evolve, and mass-loss rates of Cool Supergiant (CSG) stars in particular are uncertain by a factor $\sim~20$ or more. In this work we perform a first study…

ECMSim: A high-performance web simulation of cardiac ECM remodeling through integrated ODE-based signaling and diffusion
Hasi Hays, William Richardson
https://arxiv.org/abs/2510.12577

ECMSim: A high-performance web simulation of cardiac ECM remodeling through integrated ODE-based signaling and diffusion
Extracellular matrix (ECM) remodeling is central to a wide variety of healthy and diseased tissue processes. Unfortunately, predicting ECM remodeling under various chemical and mechanical conditions has proven to be excessively challenging, due in part to its complex regulation by intracellular and extracellular molecular reaction networks that are spatially and temporally dynamic. We introduce ECMSim, which is a highly interactive, real-time, and web application designed to simulate heterogene…

#WritersCoffeeClub
6. Do you make use of unconventional punctuation?
7. Talk about a character from another's work that's stuck with you.
8. How do you keep yourself motivated?
---
6. Not much. I love my em dashes tho.
7. I dunno. At some point it was Motoko Kusanagi. Sylvanas Windrunner. Before Blizzard butchered her in WoW.
Oh, and April Ryan and …

An Approach for Restoring Magnetic Field Uniformity in Openable BIPM-Type Kibble Balance Magnets
Nanjia Li, Weibo Liu, Yongchao Ma, Wei Zhao, Songling Huang, Shisong Li
https://arxiv.org/abs/2510.04729

An Approach for Restoring Magnetic Field Uniformity in Openable BIPM-Type Kibble Balance Magnets
The Kibble balance realizes the kilogram by linking mechanical and electrical quantities via a magnet system. In an improved BIPM-type magnet design by Tsinghua University, an open/close surface was incorporated, facilitating operation. However, an unavoidable mechanical air gap at the splitting plane introduces asymmetry in the magnetic flux density profile, degrading field uniformity. This study proposes a two-step yoke compensation method to restore symmetry by adjusting the upper outer yoke…

From high-frequency sensors to noon reports: Using transfer learning for shaft power prediction in maritime
Akriti Sharma, Dogan Altan, Dusica Marijan, Arnbj{\o}rn Maressa
https://arxiv.org/abs/2510.03003

From high-frequency sensors to noon reports: Using transfer learning for shaft power prediction in maritime
With the growth of global maritime transportation, energy optimization has become crucial for reducing costs and ensuring operational efficiency. Shaft power is the mechanical power transmitted from the engine to the shaft and directly impacts fuel consumption, making its accurate prediction a paramount step in optimizing vessel performance. Power consumption is highly correlated with ship parameters such as speed and shaft rotation per minute, as well as weather and sea conditions. Frequent ac…

Physical learning in reprogrammable metamaterials for adaptation to unknown environments
Kai Jun Chen, Catherine Catrambone, Christopher Sowinski, Jacob Mukobi, Enzo Andreacchio, Enquan Chew, Alexandre Morland, Maria Sakovsky
https://arxiv.org/abs/2510.06442

Physical learning in reprogrammable metamaterials for adaptation to unknown environments
Reprogrammable mechanical metamaterials, composed of a lattice of discretely adaptive elements, are emerging as a promising platform for mechanical intelligence. To operate in unknown environments, such structures must go beyond passive responsiveness and embody traits of mechanical intelligence: sensing, computing, adaptation, and memory. However, current approaches fall short, as computation of the required adaptation in response to changes in environmental stimuli must be pre-computed ahead …

Phonon-induced two-axis spin squeezing with decoherence reduction in hybrid spin-optomechanical system
Feng Qiao, Zu-Jian Ying
https://arxiv.org/abs/2510.07068 https://

Phonon-induced two-axis spin squeezing with decoherence reduction in hybrid spin-optomechanical system
We propose a scheme to implement Heisenberg-limited spin squeezing in a hybrid cavity optomechanical-spin system. In our system, $N$ two-level systems are coupled via Tavis-Cummings interactions to a mechanical resonator (MR) in a standard optomechanical setup. Within the dispersive coupling regime, adiabatic elimination of the optical mode induces a squeezing effect on the MR, which, in the squeezed representation, effectively transforms the collective spin operators into a Bogoliubov form. Un…

Using Robotics to Improve Transcatheter Edge-to-Edge Repair of the Mitral Valve
L\'ea Pistorius, Namrata U. Nayar, Phillip Tran, Sammy Elmariah, Pierre E. Dupont
https://arxiv.org/abs/2510.04178

Using Robotics to Improve Transcatheter Edge-to-Edge Repair of the Mitral Valve
Transcatheter valve repair presents significant challenges due to the mechanical limitations and steep learning curve associated with manual catheter systems. This paper investigates the use of robotics to facilitate transcatheter procedures in the context of mitral valve edge-to-edge repair. The complex handle-based control of a clinical repair device is replaced by intuitive robotic joint-based control via a game controller. Manual versus robotic performance is analyzed by decomposing the ove…

Spatial two-grid compact difference scheme for two-dimensional nonlinear diffusion-wave equations with variable exponent
Hao Zhang, Kexin Li, Wenlin Qiu
https://arxiv.org/abs/2510.12188

Spatial two-grid compact difference scheme for two-dimensional nonlinear diffusion-wave equations with variable exponent
This paper presents a spatial two-grid (STG) compact difference scheme for a two-dimensional (2D) nonlinear diffusion-wave equation with variable exponent, which describes, e.g., the propagation of mechanical diffusive waves in viscoelastic media with varying material properties. Following the idea of the convolution approach, the diffusion-wave model is first transformed into an equivalent formulation. A fully discrete scheme is then developed by applying a compact difference approximation in …

Quasi-static in vivo elastography from internal displacement information only
David G. J. Heesterbeek, Max H. C. van Riel, Ray S. S. Sheombarsing, Tristan van Leeuwen, Martijn Froeling, Cornelis A. T. van den Berg, Alessandro Sbrizzi
https://arxiv.org/abs/2510.12609

Quasi-static in vivo elastography from internal displacement information only
As disease often alters the structural properties of soft tissue, noninvasive elastography techniques have emerged to quantitatively assess in vivo mechanical properties. Magnetic Resonance Elastography (MRE) based on dynamic deformations is the standard technique for imaging mechanical properties, but the viscoelastic nature of soft tissue makes the results dependent on the actuation frequency, which can be limiting. In this proof-of-principle study we propose a noise robust framework for reco…

Robust Closed-Form Control for MIMO Nonlinear Systems under Conflicting Time-Varying Hard and Soft Constraints
Farhad Mehdifar, Charalampos P. Bechlioulis, Dimos V. Dimarogonas
https://arxiv.org/abs/2510.11393

Robust Closed-Form Control for MIMO Nonlinear Systems under Conflicting Time-Varying Hard and Soft Constraints
This paper introduces a novel robust closed-form control law to handle time-varying hard and soft constraints in uncertain high-relative-degree nonlinear MIMO systems. These constraints represent spatiotemporal specifications in mechanical systems' operational space, with hard constraints ensuring safety-critical requirements and soft constraints encoding performance or task objectives. Initially, all constraints are consolidated into two separate scalar time-varying hard and soft constraint fu…

Microstructure sensitive recurrent neural network surrogate model of crystal plasticity
Michael D. Atkinson, Michael D. White, Adam J. Plowman, Pratheek Shanthraj
https://arxiv.org/abs/2510.06904

Microstructure sensitive recurrent neural network surrogate model of crystal plasticity
The development of next-generation structural materials for harsh environments requires rapid assessment of mechanical performance and its dependence on microstructure. While full-field crystal plasticity (CP) models provide detailed insights, the high computational cost limits their use with uncertainty quantification workflows and in component-scale simulation. Surrogate models based on recurrent neural networks (RNNs) have shown promise in reproducing history-dependent mechanical behaviour b…

Characterizing Power Spectra of Density Fluctuations in GRMHD Simulations of Black Hole Accretion Using Taylor's Frozen-in Hypothesis
Pravita Hallur, Lia Medeiros, Pierre Christian, George N. Wong
https://arxiv.org/abs/2510.09746

Characterizing Power Spectra of Density Fluctuations in GRMHD Simulations of Black Hole Accretion Using Taylor's Frozen-in Hypothesis
We characterize the spatial power spectrum of density fluctuations in magnetohydrodynamic flows in a suite of high-resolution, long-time-span general relativistic magnetohydrodynamic (GRMHD) simulations. Extracting the local spatial power spectrum in curved spacetime directly from GRMHD simulations can be challenging for several conceptual and mechanical reasons, including choices of the reference frame, the non-uniform co-ordinate grid of the outputs and limited resolution. Taylor's frozen-in …

Open-Source Thermostatic Radiator Valve (OpenTRV) - OpenTRV retrofit open-source reference mechanical/hardware/software design for zoned heating to save carbon and money. #OpenTRV #TRV #heating

Open-Source Thermostatic Radiator Valve (OpenTRV)
OpenTRV retrofit open-source reference mechanical/hardware/software design for zoned heating to save carbon and money. #OpenTRV #TRV #heating #cutCarbon

Series D, Episode 04 - Stardrive
VILA: [All "drunk mannerisms" vanishing instantly] Drunk? Who's drunk?
DAYNA: You are.
VILA: Show me how to get drunk on plain water and I won't waste time.
DAYNA: Well, then why pretend?
https://blake.torpidity.net/m/404/72…

Revised comment on the paper titled "The Origin of Quantum Mechanical Statistics: Insights from Research on Human Language
Miko{\l}aj Sienicki, Krzysztof Sienicki
https://arxiv.org/abs/2512.07881 https://arxiv.org/pdf/2512.07881 https://arxiv.org/html/2512.07881
arXiv:2512.07881v1 Announce Type: new
Abstract: This short note comments on \citet{Aerts2024Origin}, which proposes that ranked word frequencies in texts should be read through the lens of Bose--Einstein (BE) statistics and even used to illuminate the origin of quantum statistics in physics. The core message here is modest: the paper offers an interesting analogy and an eye-catching fit, but several key steps mix physical claims with definitions and curve-fitting choices. We highlight three such points: (i) a normalization issue that is presented as "bosonic enhancement", (ii) an identification of rank with energy that makes the BE fit only weakly diagnostic of an underlying mechanism, and (iii) a baseline comparison that is too weak to support an ontological conclusion. We also briefly flag a few additional concerns (interpretation drift, parameter semantics, and reproducibility).
toXiv_bot_toot

Acoustoelectric Amplification in a Piezoelectric-2DEG Heterostructure
Eric Chatterjee, Daniel Soh, Matt Eichenfield
https://arxiv.org/abs/2510.09248 https://

Acoustoelectric Amplification in a Piezoelectric-2DEG Heterostructure
We provide a quantum mechanical description of phonon amplification in a heterostructure consisting of a two-dimensional electron gas (2DEG) stacked on top of a piezoelectric material. An applied drift voltage effectively creates a population inversion in the momentum states of the 2DEG electrons, giving rise to spontaneous emission of phonons. Once an acoustic wave is launched, the pumped electrons release phonons via stimulated emission, returning to depleted ground states before being pumped…

Enhancement of diffusivity and plastic deformation in ultrasound-assisted cold spray of tungsten: a molecular dynamics study
Md Tusher Ahmed, Farid Ahmed, Jianzhi Li
https://arxiv.org/abs/2510.09803

Enhancement of diffusivity and plastic deformation in ultrasound-assisted cold spray of tungsten: a molecular dynamics study
Tungsten ($W$) is widely valued for its exceptional thermal stability, mechanical strength, and corrosion resistance, making it an ideal candidate for high-performance military and aerospace applications. However, its high melting point and inherent brittleness pose significant challenges for processing $W$ using additive manufacturing (AM). Cold spray (CS), a solid-state AM process that relies on high-velocity particle impact and plastic deformation, offers a promising alternative. In this stu…

Renormalization of Interacting Random Graph Models
Alessio Catanzaro, Diego Garlaschelli, Subodh P. Patil
https://arxiv.org/abs/2510.07186 https://arxiv.or…

Renormalization of Interacting Random Graph Models
Random graphs offer a useful mathematical representation of a variety of real world complex networks. Exponential random graphs, for example, are particularly suited towards generating random graphs constrained to have specified statistical moments. In this investigation, we elaborate on a generalization of the former where link probabilities are conditioned on the appearance of other links, corresponding to the introduction of interactions in an effective generalized statistical mechanical for…

RAISE: A self-driving laboratory for interfacial property formulation discovery
Mohammad Nazeri (Institute of Biomedical Engineering, University of Toronto, Canada), Sheldon Mei (Department of Chemical Engineering and Applied Chemistry, University of Toronto, Canada), Jeffrey Watchorn (Acceleration Consortium, University of Toronto, Canada), Alex Zhang (Department of Mechanical and Industrial Engineering, University of Toronto, Canada), Erin Ng (Department of Chemical Engineering and A…

RAISE: A self-driving laboratory for interfacial property formulation discovery
Surface wettability is a critical design parameter for biomedical devices, coatings, and textiles. Contact angle measurements quantify liquid-surface interactions, which depend strongly on liquid formulation. Herein, we present the Robotic Autonomous Imaging Surface Evaluator (RAISE), a closed-loop, self-driving laboratory that is capable of linking liquid formulation optimization with surface wettability assessment. RAISE comprises a full experimental orchestrator with the ability of mixing li…

Crosslisted article(s) found for physics.atom-ph. https://arxiv.org/list/physics.atom-ph/new
[1/1]:
- Mechanical Stability of 2D Ti2COx MXenes Under Compression Using Reactive Molecular Dynamics
Hossein Darban
https://arxiv.org/abs/2512.05166 https://mastoxiv.page/@arXiv_condmatmtrlsci_bot/115683094055082376
- Squeezing Classical Antiferromagnets into Quantum Spin Liquids via Global Cavity Fluctuations
Mann, Oehlgrien, Jaworowski, Calaj\'o, Marino, Choi, Chang
https://arxiv.org/abs/2512.05630 https://mastoxiv.page/@arXiv_quantph_bot/115683366016729915
- Quenching dynamics of vortex in spin-orbit coupled Bose-Einstein condensates
Juan Wang, Zhenze Fan, Yan Li
https://arxiv.org/abs/2512.05691 https://mastoxiv.page/@arXiv_condmatquantgas_bot/115682862702776327
- Computer simulations of the Stark effect in the helium-beta complex of krypton in ICF conditions
G. P\'erez-Callejo, E. Stambulchik, R. Florido, M. A. Gigosos
https://arxiv.org/abs/2512.05903 https://mastoxiv.page/@arXiv_physicsplasmph_bot/115683224476329386
toXiv_bot_toot

Structured identification of multivariable modal systems
Maarten van der Hulst, Rodrigo A. Gonz\'alez, Koen Classens, Paul Tacx, Nick Dirkx, Jeroen van de Wijdeven, Tom Oomen
https://arxiv.org/abs/2510.10820

Structured identification of multivariable modal systems
Physically interpretable models are essential for next-generation industrial systems, as these representations enable effective control, support design validation, and provide a foundation for monitoring strategies. The aim of this paper is to develop a system identification framework for estimating modal models of complex multivariable mechanical systems from frequency response data. To achieve this, a two-step structured identification algorithm is presented, where an additive model is first …

Brillouin-Mandelstam Scattering-based Cooling of Traveling Acoustic Waves from Cryogenic Temperatures
Lisa Fischer, Laura Bl\'azquez Mart\'inez, Robin Chenivi\`ere, Johann Troles, Birgit Stiller
https://arxiv.org/abs/2510.12418

Brillouin-Mandelstam Scattering-based Cooling of Traveling Acoustic Waves from Cryogenic Temperatures
Thermal phonons are a major source of decoherence in quantum mechanical systems. Operating in the quantum ground state is therefore often an experimental prerequisite. Additionally to passive cooling in a cryogenic environment, active laser cooling enables the reduction of phonons at specific acoustic frequencies. Brillouin cooling has been used to show efficient reduction of the thermal phonon population in waveguides at GHz frequencies down to 74 K. In this letter, we demonstrate cooling of a…

3D Moving-mesh Hydrodynamical Simulations of Wind/Jet Driven Ultraluminous X-ray Source Bubbles
Jiahui Huang, Ken Ohsuga, Hua Feng, Hui Li
https://arxiv.org/abs/2510.09066 https…

3D Moving-mesh Hydrodynamical Simulations of Wind/Jet Driven Ultraluminous X-ray Source Bubbles
We perform 3 dimensional moving-mesh hydrodynamical simulations of bubble nebulae around ultraluminous X-ray sources, using state-of-the-art software AREPO. We use a Monte-Carlo method to inject outflows with uniform mass outflow rate and momentum, in a conical funnel with a specific half opening angle. Simulation results show that the morphology of the bubble is determined by the initial momentum of the outflows, while the mechanical power of the outflows only influences the size of the bubble…

Equilibrium properties of strongly confined fluids
Ana M. Montero
https://arxiv.org/abs/2510.04546 https://arxiv.org/pdf/2510.04546

Equilibrium properties of strongly confined fluids
The statistical-mechanical study of the equilibrium properties of fluids, starting from the knowledge of the interparticle interaction potential, is essential to understand the role that microscopic interaction between individual particles play in the properties of the fluid. The study of these properties from a fundamental point of view is therefore a central goal in condensed matter physics. These properties, however, might vary greatly when a fluid is confined to extremely narrow channels an…

Non-destructive diagnostics of fiber orientation in large planar fiber-reinforced concrete specimens
V\'aclav Pape\v{z}, Karel K\"unzel, Petr Konr\'ad, Krist\'yna Carrera, Petr Konvalinka
https://arxiv.org/abs/2510.06272

Non-destructive diagnostics of fiber orientation in large planar fiber-reinforced concrete specimens
The mechanical performance of fiber-reinforced concrete is critically dependent on the orientation and concentration of its reinforcing fibers. This paper presents a non-destructive method for diagnosing fiber parameters in large planar specimens. The proposed technique utilizes an electromagnetic measurement system using electrical coils with commercial LCR meters, but also a novel custom-made meter suitable for factory environments, offering a practical solution for quality control in prefabr…

Closed-loop control of sloshing fuel in a spinning spacecraft
Umberto Zucchelli, Miguel Alfonso Mendez, Annafederica Urbano, Sebastien Vincent-Bonnieu, Piotr Wenderski, Francesco Sanfedino
https://arxiv.org/abs/2510.08121

Closed-loop control of sloshing fuel in a spinning spacecraft
New-generation space missions require satellites to carry substantial amounts of liquid propellant, making it essential to analyse the coupled control-structure-propellant dynamics in detail. While Computational Fluid Dynamics (CFD) offers high-fidelity predictions, its computational cost limits its use in iterative design. Equivalent Mechanical Models (EMMs) provide a faster alternative, though their predictive performance, especially in closed-loop scenarios, remains largely unexplored. This …

A three-dimensional acousto-optic deflector
Lewis R. B. Picard, Manuel Endres
https://arxiv.org/abs/2510.07633 https://arxiv.org/pdf/2510.07633

A three-dimensional acousto-optic deflector
Acousto-optic deflectors (AODs) are widely used across physics, microscopy, neuroscience, and laser engineering, providing fast, precise, and non-mechanical control of light. While conventional AODs naturally support multiplexing in one and two dimensions, no analogous device has existed for three-dimensional control, leaving a critical gap in rapid focus tuning and 3D beam shaping. Here we demonstrate a three-dimensional AOD system capable of multiplexed axial and lateral beam control with hig…

Origin of trapped intralayer Wannier and charge-transfer excitons in moir\'e materials
Indrajit Maity, Johannes Lischner, Arash A. Mostofi, \'Angel Rubio
https://arxiv.org/abs/2510.06137

Origin of trapped intralayer Wannier and charge-transfer excitons in moiré materials
Moiré materials offer a versatile platform for engineering excitons with unprecedented control, promising next-generation optoelectronic applications. While continuum models are widely used to study moiré excitons due to their computational efficiency, they often disagree with ab initio many-body approaches, as seen for intralayer excitons in WS$_2$/WSe$_2$ heterobilayers. Here, we resolve these discrepancies using an atomistic, quantum-mechanical framework based on the Bethe-Salpeter equatio…

Hot-carrier generation in bimetallic Janus nanoparticles
Hanwen Jin, Chengcheng Xiao, Matias Herran, Emiliano Cortes, Shiwu Gao, Johannes Lischner
https://arxiv.org/abs/2510.07982

Hot-carrier generation in bimetallic Janus nanoparticles
Energetic electrons and holes generated from the decay of localized surface plasmons in metallic nanoparticles can be harnessed in nanoscale devices for photocatalysis, photovoltaics or sensing. In this work, we study the generation of such hot carriers in bimetallic Janus nanoparticles composed of Au, Ag and Cu using a recently developed atomistic modelling approach that combines a solution of the macroscopic Maxwell equation with large-scale quantum-mechanical tight-binding models. We first a…

Role of chromium oxides and carbides in strengthening CoCrFeNi multi-principle element alloys
Artur Olejarz, Wenyi Huo, Anna Kosinska, Maciej Zielinski, Tomasz Stasiak, Marcin Chmielewski, Wojciech Chmurzynski, Max Rae Chu, Michael Patrick Short, Lukasz Kurpaska
https://arxiv.org/abs/2510.05021

Role of chromium oxides and carbides in strengthening CoCrFeNi multi-principle element alloys
Multi-principal element alloys (MPEAs) can potentially offer exceptional material properties, but their complex, costly manufacturing limits their scalability. Chemical complexity and complex manufacturing processes lead to the formation of some secondary phases, which have a significant impact on the final properties. In this work, chromium compound dispersoid enhancements (Cr- oxides and carbides) were formed in CoCrFeNi MPEAs to enhance their microstructural and high-temperature mechanical p…