Tootfinder

'Tiere (ohne Hund und Katze)'
Schlafender Fuchs bei uns im Garten, mitten in Nordlondon
#FotoVorschlag

Die ePetition 180447 an den Bundestag aus dem Bereich Photovoltaik mit dem Titel
Kein Bau von Photovoltaik-Anlagen auf Grün- und Ackerflächen/Indirekte Versiegelung des Bodens vermeiden
kann bis zum Donnerstag 14. August 2025 01:00 UTC mitgezeichnet werden und lautet
Mit der Petition wird gefordert, dass Photovoltai…

Die ePetition 180447 an den Bundestag aus dem Bereich Photovoltaik mit dem Titel
Kein Bau von Photovoltaik-Anlagen auf Grün- und Ackerflächen/Indirekte Versiegelung des Bodens vermeiden
kann bis zum Donnerstag 14. August 2025 01:00 UTC mitgezeichnet werden und lautet
Mit der Petition wird gefordert, dass Photovoltai…

#DavidChokachi #PamelaAnderson
Season 6 Episode 15 "Bash at the Beach"
#RandomBaywatch

China's Hainan province tests letting some corporate users bypass the Great Firewall and access the global internet, as it seeks to become a free-trade port (Ben Jiang/South China Morning Post)
https://www.scmp.com/tech/policy…

China will drop the Great Firewall for some users, but only in southern Hainan
Employees of companies operating in the island province can apply for the ‘Global Connect’ scheme, but some content will remain restricted.

From Nothing
#StrangeInspiration #NowPlaying
https://muz4now.com/2020/from-nothing-

From Nothing #NowPlaying
Stan Stewart - @muz4now

I'm probably going to get a lot of shit for this...
I'm starting to sour on the idea that AI/LLMs are inherently bad.
You'll never catch me using image generators though.

The Curse of Dimensionality: De-identification Challenges in the Sharing of Highly Dimensional Datasets
https://fpf.org/blog/the-curse-of-dimensionality-de-identification-challenges-in-the-sharing-of-highl…

Pressure-Driven Metallicity in {\AA}ngstr\"om-Thickness 2D Bismuth and Layer-Selective Ohmic Contact to MoS2
Shuhua Wang, Shibo Fang, Qiang Li, Yunliang Yue, Zongmeng Yang, Xiaotian Sun, Jing Lu, Chit Siong Lau, L. K. Ang, Lain-Jong Li, Yee Sin Ang
https://arxiv.org/abs/2506.05133

Pressure-Driven Metallicity in Ångström-Thickness 2D Bismuth and Layer-Selective Ohmic Contact to MoS2
Recent fabrication of two-dimensional (2D) metallic bismuth (Bi) via van der Waals (vdW) squeezing method opens a new avenue to ultrascaling metallic materials into the ångström-thickness regime [Nature 639, 354 (2025)]. However, freestanding 2D Bi is typically known to exhibit a semiconducting phase [Nature 617, 67 (2023), Phys. Rev. Lett. 131, 236801 (2023)], which contradicts with the experimentally observed metallicity in vdW-squeezed 2D Bi. Here we show that such discrepancy originates f…

Ein Pferd aus überdimensionalen Teilen eines Uhrwerks (Auf der Baselworld Uhrenmesse 2018)
'Technik, die begeistert' #FotoVorschlag

Aus der Reihe "adoptiert, weil ohne Alttext":
#Ukraine

Das war tatsächlich die ERSTE Metal-Band, ohne Modern/Alternative/Core/Post/sonstwas-Zusatz auf dem Leineweber, oder?
Weiter so! 🤘
#Bielefeld #Leinewebermarkt #PlanB

Endlich mal ein bisschen flacher.
#gmiatlichRadln #rausgeschafft #day521

Kommenden Dienstag 8.7.25, 19:30 Uhr, ist es so weit:
Michael Blume in der Manufaktur
Sturmflut der Lügen - Wie wir unsere Gesellschaft gegen Desinformation Wappnen
@…
#schorndorf

In Oerlikon, wo die Sachen noch heissen, wie das was sie sind oder machen und wo natürlich auch Maschinen Namen haben.
Darf ich vorstellen: Richard Gartenbauch
!B

Got suspended for 24 hours from #Bluesky for telling a transphobic (and potentially a nonce) "journalist" to end his life :neocat_thonk:

Manage the Heat Maltese Style - Avoid your home overheating in summer by using your windows and blinds like the Maltese do on the Med! #BeatTheHeat - https://www.earth.org.uk/manage-the-heat-M

Manage the Heat Maltese Style
Avoid your home overheating in summer by using your windows and blinds like the Maltese do on the Med! #BeatTheHeat

H\"older continuity of Lyapunov exponents for non-invertible and non-compact random cocycles
Pedro Duarte, Tom\'e Graxinha
https://arxiv.org/abs/2506.04124

Hölder continuity of Lyapunov exponents for non-invertible and non-compact random cocycles
We study the regularity of Lyapunov exponents for random linear cocycles taking values in $\Mat_m(\R)$ and driven by i.i.d. processes. Under three natural conditions - finite exponential moments, a spectral gap between the top two Lyapunov exponents, and quasi-irreducibility of the associated semigroup - we prove that the top Lyapunov exponent is Hölder continuous with respect to the Wasserstein distance. In the final section, we apply the main results to Schrödinger cocycles with unbounded p…

Malaysia Charts Its Digital Course: A Guide to the New Frameworks for Data Protection and AI Ethics
https://fpf.org/blog/malaysia-charts-its-digital-course-a-guide-to-the-new-frameworks-for-data-protection-and…

Initial default PCB layout for the switch engine board.
Surprisingly simple, the UltraRAM means I should be able to keep the entire switch's buffering on chip and not need any external RAM. So most of the HP I/Os are completely unused.

Programmable wrinkling for functionally-graded auxetic circular membranes
Sairam Pamulaparthi Venkata, Valentina Balbi, Michel Destradea, Dino Accoto, Giuseppe Zurlo
https://arxiv.org/abs/2506.04148

Programmable wrinkling for functionally-graded auxetic circular membranes
Materials with negative Poisson's ratio, also known as auxetic materials, display exotic properties such as expansion in all directions under uni-axial tension. For their unique properties, these materials find a broad range of applications in robotic, structural, aerospace, and biomedical engineering. In this work we study the wrinkling behavior of thin and soft auxetic membranes, subjected to edge tractions. We show that spatial inhomogeneities of the Young modulus and of the Poisson ratio …

#musiknase … chillen und arbeiten!
https://music.apple.com/de/album/tracks-ii-the-lost-albums/1804688733

CFP: British Nonconformity in the Long Eighteenth Century Working Group
https://ift.tt/j2RNWfl
When: June 21, 2025 in Bath Submit abstract and brief bio by: March 31, 2025 2025 marks the 250th…
via Input 4 RELCFP

CFP: British Nonconformity in the Long Eighteenth Century Working Group - American Society of Church History
When: June 21, 2025 in Bath Submit abstract and brief bio by: March 31, 2025 2025 marks the 250th anniversaries which commemorate the American Revolution. Not only a period of geopolitical upheaval, it saw a transformation in the theologies and networks that had shaped eighteenth-century Dissent throughout the British Atlantic world. Notions of liberty and…

Kits Farmers' Market
#Vancouver

Olfactory Inertial Odometry: Methodology for Effective Robot Navigation by Scent
Kordel K. France, Ovidiu Daescu
https://arxiv.org/abs/2506.02373 https://

Olfactory Inertial Odometry: Methodology for Effective Robot Navigation by Scent
Olfactory navigation is one of the most primitive mechanisms of exploration used by organisms. Navigation by machine olfaction (artificial smell) is a very difficult task to both simulate and solve. With this work, we define olfactory inertial odometry (OIO), a framework for using inertial kinematics, and fast-sampling olfaction sensors to enable navigation by scent analogous to visual inertial odometry (VIO). We establish how principles from SLAM and VIO can be extrapolated to olfaction to ena…

Wach
...sind Andere.

Tonight's #baseball (assuming it doesn't get rained out) is Gwinnett Stripers vs the Saint Paul Saints. We haven't seen the Saints before.
Hot dog acquired.
#milb
#GWNvsSTP

Understanding Japan’s AI Promotion Act: An “Innovation-First” Blueprint for AI Regulation
https://fpf.org/blog/understanding-japans-ai-promotion-act-an-innovation-first-blueprint-for-ai-regulation/

Das könnte ein Riesen-#Lebensbaum sein. Der stand nicht in einem Park, sondern mit weiteren #Bäumen im #Wald.
BTW,

https://medium.com/ticom/rss-in-mastodon-823042abb8a9
One of Mastodon’s features is native RSS integration
which is very easy to use:
For example let’s take the URL

RSS in Mastodon - TICOM Webcomics - Medium

This https://arxiv.org/abs/2503.02407 has been replaced.
initial toot: https://mastoxiv.page/@a…

Wyckoff Transformer: Generation of Symmetric Crystals
Crystal symmetry plays a fundamental role in determining its physical, chemical, and electronic properties such as electrical and thermal conductivity, optical and polarization behavior, and mechanical strength. Almost all known crystalline materials have internal symmetry. However, this is often inadequately addressed by existing generative models, making the consistent generation of stable and symmetrically valid crystal structures a significant challenge. We introduce WyFormer, a generative …

Manage the Heat Maltese Style - Avoid your home overheating in summer by using your windows and blinds like the Maltese do on the Med! #BeatTheHeat - https://www.earth.org.uk/manage-the-heat-M

Manage the Heat Maltese Style
Avoid your home overheating in summer by using your windows and blinds like the Maltese do on the Med! #BeatTheHeat

FPF Unveils Paper on State Data Minimization Trends
https://fpf.org/blog/fpf-unveils-paper-on-state-data-minimization-trends/
@…

Lattice and Orientational Defects Mediate Collective Transport of Confluent Cells
Jiusi Zhang, Chung Wing Chan, Bo Li, Rui Zhang
https://arxiv.org/abs/2506.04068

Lattice and Orientational Defects Mediate Collective Transport of Confluent Cells
Confluent tissues are a type of foam-like biological active matter. There is a recent interest in using active nematic liquid crystal framework to understand confluent cells, where topological (orientational) defects are believed to play a crucial role. However, how to reconcile the physical picture of lattice defects in Voronoi polygons with that of orientational defects in the nematic field$-$particularly in the context of cellular transport$-$remains elusive. Here, we employ the Active Verte…

Das wird ein „interessanter“ Spieltag in der #ErimaGFL für die #unicornsfootball … #AmericanFootball

Die ePetition 182020 an den Bundestag aus dem Bereich Straftaten gegen die öffentliche Ordnung mit dem Titel
Änderung von § 131 des Strafgesetzbuches (Gewaltdarstellung)
kann bis zum Donnerstag 14. August 2025 01:00 UTC mitgezeichnet werden und lautet
Mit der Petition wird eine Änderung von § 131 des Strafgesetzbuch…

Die ePetition 182020 an den Bundestag aus dem Bereich Straftaten gegen die öffentliche Ordnung mit dem Titel
Änderung von § 131 des Strafgesetzbuches (Gewaltdarstellung)
kann bis zum Donnerstag 14. August 2025 01:00 UTC mitgezeichnet werden und lautet
Mit der Petition wird eine Änderung von § 131 des Strafgesetzbuch…

Brazil’s ANPD Preliminary Study on Generative AI highlights the dual nature of data protection law: balancing rights with technological innovation
https://fpf.org/blog/brazils-anpd-prel

This https://arxiv.org/abs/2411.15983 has been replaced.
initial toot: https://mastoxiv.page/@a…

Why Grain Growth is Not Curvature Flow
Grain growth in polycrystals is traditionally considered a capillarity-driven process, where grain boundaries (GBs) migrate toward their centers of curvature (i.e., mean curvature flow) with a velocity proportional to the local curvature (including extensions to account for anisotropic GB energy and mobility). Experimental and simulation evidence shows that this simplistic view is untrue. We demonstrate that the failure of the classical mean curvature flow description of grain growth mainly ori…

"I owe, I owe - so it's off to work I go"
https://www.youtube.com/watch?v=Rg_jppK1I2Q

Mapple Ackintosh

Cross-Border Data Flows in Africa: Examining Policy Approaches and Pathways to Regulatory Interoperability
https://fpf.org/blog/cross-border-data-flows-in-africa-examining-policy-approaches-and-pathways…

Complex rheology of condensin in entangled DNA
Filippo Conforto, Antonio Valdes, Willem Vanderlinden, Davide Michieletto
https://arxiv.org/abs/2506.04060 h…

Complex rheology of condensin in entangled DNA
Structural-Maintenance-of-Chromosome (SMC) complexes such as condensins are well-known to dictate the folding and entanglement of interphase and mitotic chromosomes. However, their role in modulating the rheology and viscoelasticity of entangled DNA is not fully understood. In this work, we discover that physiological concentrations of yeast condensin increase both the effective viscosity and elasticity of dense solutions of $λ$-DNA even in absence of ATP. By combining biochemical assays and s…

This https://arxiv.org/abs/2410.11475 has been replaced.
initial toot: https://mastoxiv.page/@a…

Mechanism of $E'_γ$ Defect Generation in Ionizing-irradiated $a$-SiO$_2$: The Nonradiative Carrier Capture-Structural Relaxation Model
The total ionizing dose (TID) effect of semiconductor devices stems from radiation-induced $E'_γ$ defects in the $a$-SiO$_2$ dielectrics, but the conventional ``hole transport-trapping'' model of defect generation fails to explain recent basic experiments. Here, we propose an essentially new ``nonradiative carrier capture-structural relaxation'' (NCCSR) mechanism that can consistently explain the puzzling temperature/electric-field dependence, based on spin-polarized HSE06 hybrid functional ca…

Mechanical Degradation of Unentangled Polymer Melts under Uniaxial Extensional Flow
Mingchao Wang, Stephen Sanderson, Debra J. Searles
https://arxiv.org/abs/2506.03945

Mechanical Degradation of Unentangled Polymer Melts under Uniaxial Extensional Flow
Complex flow fields govern the deformation of polymers in various manufacturing processes. However, high flow rates may trigger reaction events (i.e., bond breaking or undesirable reaction of mechanophores) in raw polymeric materials, leading to the mechanical or functional debasement of manufactured structures. Additionally, it is difficult to fully characterize such molecular-level flow in the laboratory due to time- and length-scale limits. In this study, we perform non-equilibrium molecular…

Neuer Arbeitsplatz in der #küche ich freue mich schon auf die ersten Einsätze der Schneidbox. #kochen

Atomic scale structure and dynamical properties of (TeO$_2$)$_{1-x}$-(Na$_2$O)$_{x}$ glasses through first-principles modeling and XRD measurements
Firas Shuaib, Assil Bouzid, Remi Piotrowski, Gaelle Delaizir, Pierre-Marie Geffroy, David Hamani, Raghvender Raghvender, Steve Dave Wansi Wendji, Carlo Massobrio, Mauro Boero, Guido Ori, Philippe Thomas, Olivier Masson

Atomic scale structure and dynamical properties of (TeO$_2$)$_{1-x}$-(Na$_2$O)$_{x}$ glasses through first-principles modeling and XRD measurements
We resort to first-principles molecular dynamics, in synergy with experiments, to study structural evolution and Na$^+$ cation diffusion inside (TeO$_2$)$_{1-x}$-(Na$_2$O)$_{x}$ (x = 0.10-0.40) glasses. Experimental and modeling results show a fair quantitative agreement in terms of total X-ray structure factors and pair distribution functions, thereby setting the ground for a comprehensive analysis of the glassy matrix evolution. We find that the structure of (TeO$_2$)$_{1-x}$-(Na$_2$O)$_{x}$ …

Canceling the elastic Poynting effect with geometry
M. Destrade, Y. Du, J. Blackwell, N. Colgan, V. Balbi
https://arxiv.org/abs/2506.03821 https://

Canceling the elastic Poynting effect with geometry
The Poynting effect is a paragon of nonlinear soft matter mechanics. It is the tendency (found in all incompressible, isotropic, hyperelastic solids) exhibited by a soft block to expand vertically when sheared horizontally. It can be observed whenever the length of the cuboid is at least four times its thickness. Here we show that the Poynting effect can be easily reversed and the cuboid can shrink vertically, simply by reducing this aspect ratio. In principle, this discovery means that for a g…

Large Berry curvature effects induced by extended nodal structures: Rational design strategy and high-throughput materials predictions
Wencheng Wang, Minxue Yang, Wei Chen, Xiangang Wan, Feng Tang
https://arxiv.org/abs/2506.03871

Large Berry curvature effects induced by extended nodal structures: Rational design strategy and high-throughput materials predictions
Berry curvature can drastically modify the electron dynamics, thereby offering an effective pathway for electron manipulation and novel device applications. Compared to zero-dimensional nodal points in Weyl/Dirac semimetals, higher-dimensional extended nodal structures, such as nodal lines and nodal surfaces, are more likely to intersect the Fermi surface, leading to large Berry curvature effects without fine-tuning the chemical potential. In this work, we propose a strategy that utilizes strai…

Understanding Flow Behaviors of Supercooled Liquids by Embodying Solid-Liquid Duality at Particle Level
Dong-Xu Yu, Ke-Qi Zeng, Zhe Wang
https://arxiv.org/abs/2506.03818

Understanding Flow Behaviors of Supercooled Liquids by Embodying Solid-Liquid Duality at Particle Level
Supercooled liquids exhibit intricate flow behaviors, which progressively become nonlinear as flow rate increases. Conceptually, this complexity can be understood by the solid-liquid duality in Maxwell's understanding of materials' response to external load. Nevertheless, the microscopic foundation of this duality in supercooled liquids remains elusive, thereby impeding the modeling of flow behaviors from a microscopic viewpoint. The existence of dynamic heterogeneity adds to this difficulty. T…

Beyond Diamond: Interpretable Machine Learning Discovery of Coherent Quantum Defect Hosts in Semiconductors
Mohammed Mahshook, Rudra Banerjee
https://arxiv.org/abs/2506.03844

Beyond Diamond: Interpretable Machine Learning Discovery of Coherent Quantum Defect Hosts in Semiconductors
Quantum point defects in wide bandgap semiconductors-such as the nitrogen-vacancy (NV) center in diamond are leading candidates for solid-state spin qubits due to their long coherence times and optically addressable spin states. Yet, identifying host materials capable of supporting such deep-level defects remains a significant challenge, owing to the complex interplay between chemical composition, crystal structure, and electronic environment. Here, we present a scalable, interpretable machine …

Vermont and Nebraska: Diverging Experiments in State Age-Appropriate Design Codes
https://fpf.org/blog/vermont-and-nebraska-diverging-experiments-in-state-age-appropriate-design-codes/
@…

Non-invasive measurement of local stress inside soft materials with programmed shear waves
Zhaoyi Zhang, Guo-Yang Li, Yuxuan Jiang, Yang Zheng, Artur L. Gower, Michel Destrade, Yanping Cao
https://arxiv.org/abs/2506.03816

Non-invasive measurement of local stress inside soft materials with programmed shear waves
Mechanical stresses in soft materials across different length scales play a fundamental role in understanding the function of biological systems and in the use of artificial materials for engineering soft machines and biomedical devices. Yet it remains a great challenge to probe local mechanical stresses in situ in a non-invasive, non-destructive manner, in particular when the mechanical properties are unknown. To address this challenge, we propose an acoustoelastic imaging-based method to infe…

Efficient and standardized interface energy calculations in hybrid heterostructures using fictitious atoms surface passivation
Sreejith Pallikkara Chandrasekharan, Sofia Apergi, Charles Cornet, Laurent Pedesseau
https://arxiv.org/abs/2506.03769

Efficient and standardized interface energy calculations in hybrid heterostructures using fictitious atoms surface passivation
Heterostructures combining diverse physico-chemical properties are increasingly in demand for a wide range of applications in modern science and technology. However, despite their importance in materials science, accurately determining absolute interface energies remains a major challenge. This difficulty arises from periodic boundary conditions, high computational costs of plane-wave methods, multipolar interactions in heterostructures, the need for thick slabs for interface convergence, and r…

Magic of nonlocal geometric force: lighting up optical transition and transporting angular momentum by chiral phonons
Hao Chen, Haoshu Li, Lifa Zhang, Qian Niu
https://arxiv.org/abs/2506.03748

Magic of nonlocal geometric force: lighting up optical transition and transporting angular momentum by chiral phonons
We investigate the impact of the nonlocal geometric force -- arising from the molecular Berry curvature -- on the lattice dynamics of magnetic materials with broken time-reversal symmetry. A first-principles computational framework is established to evaluate this force across the entire Brillouin zone. We apply it to monolayer CoCl$_2$, a ferromagnetic half-semiconductor with a narrow bandgap forbidding direct dipolar optical transition. At the phonon Brillouin zone center, the pronounced nonlo…

Only the Ambidextrous Can Flock: Two-dimensional Chiral Malthusian Flocks, Time crystals, and the KPZ Equation
Leiming Chen, Chiu Fan Lee, John Toner
https://arxiv.org/abs/2506.03488

Only the Ambidextrous Can Flock: Two-dimensional Chiral Malthusian Flocks, Time crystals, and the KPZ Equation
We study two-dimensional chiral dry Malthusian flocks; that is, chiral polar-ordered active matter with neither number nor momentum conservation. In the absence of fluctuations, these form a "time crystal", in which the velocity rotates uniformly at a fixed frequency. Fluctuations are described by the (2+1)-Kardar-Parisi-Zhang (KPZ) equation, which implies short-ranged orientational order. For weak chirality, the system is in the linear regime of the KPZ equation for a wide range of length scal…

Ultrafast switching of photoinduced phonon chirality in the antiferrochiral BPO$_{4}$ crystal
Hao Chen, Hanyu Wang, Tingting Wang, Yongsen Tang, Haoshu Li, Xiaohong Yan, Lifa Zhang
https://arxiv.org/abs/2506.03742

Ultrafast switching of photoinduced phonon chirality in the antiferrochiral BPO$_{4}$ crystal
In crystalline systems, chiral crystals cannot interconvert to their enantiomorph post-synthesis without undergoing melting-recrystallization processes. However, recent work indicates that ultrafast terahertz-polarized light has been shown to enable dynamic control of structural chirality in the antiferrochiral boron phosphate (BPO$_4$) crystal. Here, using first-principles calculations and nonlinear phonon dynamics simulations, we investigate the underlying physics of lattice dynamics in this …

Nanoconfinement Effects on Intermolecular Forces Observed via Dewetting
Tara (Tera), Huang, Evon S. Petek, Reika Katsumata
https://arxiv.org/abs/2506.03387

Nanoconfinement Effects on Intermolecular Forces Observed via Dewetting
Although wettability is a macroscopic manifestation of molecular-level forces, such as van der Waals (vdW) forces, the impact of nanoconfinement on material properties in reduced film thickness remains unexplored in predicting film stability. In this work, we investigate how nanoconfinement influences intermolecular interactions using a model trilayer system composed of a thick polystyrene (PS) base, a poly(methyl methacrylate) (PMMA) middle layer with tunable thickness (15-95 nm), and a 10 nm …

Gefitinib-Induced Interface Engineering Enhances the Defect Formation Energy for Highly Efficient and Stable Perovskite Solar Cells
Xianhu Wu, Guanglei Cui, Jieyu Bi, Gaojie Xia, Zewen Zuo, Min Gu
https://arxiv.org/abs/2506.03611

Gefitinib-Induced Interface Engineering Enhances the Defect Formation Energy for Highly Efficient and Stable Perovskite Solar Cells
Poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) has been widely used as a hole transport layer in perovskite solar cells (PSCs). However, the high interface defect density and energy level mismatch between PEDOT:PSS and perovskite can lead to significant open-circuit voltage loss. Additionally, the free PSS chains on the surface of PEDOT:PSS can absorb water molecules, promoting the degradation of perovskite at the PEDOT:PSS/perovskite interface. Here, gefitinib is used to mod…

[2025-06-05 Thu (UTC), 9 new articles found for cond-mat.soft Soft Condensed Matter]
#toXiv_bot_toot

The isostructural alpha-gamma phase transition in cerium from the perspective of meta-generalized gradient approximations
Ashesh Giri, Chandra Shahi, Adrienn Ruzsinszky
https://arxiv.org/abs/2506.03578

The isostructural alpha-gamma phase transition in cerium from the perspective of meta-generalized gradient approximations
Meta-generalized gradient approximations (meta-GGAs) on the third rung of the functional hierarchy are gaining increasing relevance for the electronic structure. Meta-GGAs are constructed from numerous ingredients including the orbital kinetic energy density that make them more flexible than generalized gradient approximations (GGAs) including the heavily used PBE-GGA. Still, most meta-GGAs cope with the expected limitations of a semilocal density functional when band gaps or localization of el…

This https://arxiv.org/abs/2503.01112 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

Nonreciprocal field theory for decision-making in multi-agent control systems
Field theories for complex systems traditionally focus on collective behaviors emerging from simple, reciprocal pairwise interaction rules. However, many natural and artificial systems exhibit behaviors driven by microscopic decision-making processes that introduce both nonreciprocity and many-body interactions, challenging these conventional approaches. We develop a theoretical framework to incorporate decision-making into field theories using the shepherding control problem as a paradigmatic …

High-pressure Induced Phase Transition and Laser Characterization Response of MAPbBr$_3$ Thin Films
Xin Tang, Ruilin Li, Shuaiqi Li, Dingke Zhang
https://arxiv.org/abs/2506.03499 …

High-pressure Induced Phase Transition and Laser Characterization Response of MAPbBr3 Thin Films
The high-pressure behavior of 3D metal halide chalcogenides (MHPs) has been widely studied. In the field of high-pressure technology, the studies on 3D MHPs have focused on the structural and optical properties, where the optical properties are mainly investigated on the photoluminescence behavior, while the laser properties of the materials have not been studied yet. In this paper, MAPbBr3-MAAc films with ionic liquid methylammonium acetate (MAAc) as solvent and conventional MAPbBr3-DMF:DMSO f…

Il datore di lavoro può raccogliere i log di navigazione e i metadati delle mail dei dipendenti solo in presenza di specifiche condizioni e garanzie.
Il provvedimento del #GarantePrivacy è stato deliberato al termine di un ciclo ispettivo sui trattamenti dei dati dei dipendenti

This https://arxiv.org/abs/2409.09421 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

One-way catalysis in a solvable lattice model
Catalysts speed up chemical reactions with no energy input and without being transformed in the process, therefore leaving equilibrium constants unchanged. Some catalysts, however, are much more efficient at accelerating one direction of a reaction. Is it possible for catalysis to be strictly unidirectional, accelerating only one direction of a reaction? Can we observe directional catalysis by analyzing the microscopic trajectory of a single reactant undergoing conversions between a substrate a…

Propylenidene: A New Carbon Two-dimensional Material Featuring Tilted Dirac Cones
Jose A. S. Laranjeira, K. A. L. Lima, Nicolas F. Martins, Luis A. Cabral, L. A. Ribeiro Junior, Julio R. Sambrano
https://arxiv.org/abs/2506.03494

Propylenidene: A New Carbon Two-dimensional Material Featuring Tilted Dirac Cones
Two-dimensional (2D) carbon allotropes have drawn significant interest owing to their impressive physical and chemical characteristics. Following graphene's isolation, a wide range of 2D carbon materials has been suggested, each with distinct electronic, mechanical, and optical traits. Rational design and synthesis of new 2D carbon structures hinge on experimentally reported precursors. Here, we present a 2D carbon allotrope, propylenidene (PPD), originating from the highly strained bicycloprop…

Heterogeneous response and non-Markovianity in the microrheology of semisolid viscoelastic materials
T. N. Azevedo, L. G. Rizzi
https://arxiv.org/abs/2506.05311

Heterogeneous response and non-Markovianity in the microrheology of semisolid viscoelastic materials
Recent works indicate that heterogeneous response and non-Markovianity may yield recognizable hallmarks in the microrheology of semisolid viscoelastic materials. Here we perform numerical simulations using a non-Markovian overdamped Langevin approach to explore how the microrheology experienced by probe particles immersed in an effective semisolid material can be influenced by its micro-heterogeneities. Our results show that, besides affecting the mean squared displacement, the time-dependent d…

Efficient implementation of the quasiparticle self-consistent $GW$ method on GPU
Masao Obata, Takao Kotani, Tatsuki Oda
https://arxiv.org/abs/2506.03477 ht…

Efficient implementation of the quasiparticle self-consistent $GW$ method on GPU
We have developed a multi-GPU version of the quasiparticle self-consistent $GW$ (QSGW), a cutting-edge method for describing electronic excitations in a first-principles approach. While the QSGW calculation algorithm is inherently well-suited for GPU computation due to its reliance on large-scale tensor operations, achieving a maintainable and extensible implementation is not straightforward. Addressing this, we have developed a GPU version within the \texttt{ecalj} package, utilizing module-ba…

Phase separation in a mixture of proliferating and motile active matter
Lukas Hupe, Joanna M. Materska, David Zwicker, Ramin Golestanian, Bartlomiej Waclaw, Philip Bittihn
https://arxiv.org/abs/2506.05288

Phase separation in a mixture of proliferating and motile active matter
Proliferation and motility are ubiquitous drivers of activity in biological systems. Here, we study a dense binary mixture of motile and proliferating particles with exclusively repulsive interactions, where homeostasis in the proliferating subpopulation is maintained by pressure-induced removal. Using computer simulations, we show that phase separation emerges naturally in this system at high density and weak enough self-propulsion. We show that condensation is caused by interactions between m…

Itinerant versus localized magnetism in spin gapped metallic half-Heusler compounds: Stoner criterion and magnetic interactions
E. Sas{\i}oglu, W. Beida, S. Ghosh, M. Tas, B. Sanyal, S. Lounis, S. Blugel, I. Mertig, I. Galanakis
https://arxiv.org/abs/2506.03416

Itinerant versus localized magnetism in spin gapped metallic half-Heusler compounds: Stoner criterion and magnetic interactions
Spin gapped metals have recently emerged as promising candidates for spintronic and nanoelectronic applications, enabling functionalities such as sub-60mV/dec switching, negative differential resistance, and non-local spin-valve effects in field-effect transistors. Realizing these functionalities, however, requires a deeper understanding of their magnetic behavior, which is governed by a subtle interplay between localized and itinerant magnetism. This interplay is particularly complex in spin g…

Graphene Electro-Absorption Modulators for Energy-Efficient and High-Speed Optical Transceivers
M. Tiberi, A. Montanaro, C. Wen, J. Zhang, O. Balci, S. M. Shinde, S. Sharma, A. Meersha, H. Shekhar, J. E. Muench, B. R. Conran, K. B. K. Teo, M. Ebert, X. Yan, Y. Tran, M. Banakar, C. Littlejohns, G. T. Reed, M. Romagnoli, A. Ruocco, V. Sorianello, A. C. Ferrari

Graphene Electro-Absorption Modulators for Energy-Efficient and High-Speed Optical Transceivers
The increasing demand for energy-efficient hardware for artificial intelligence (AI) and data centres requires integrated photonic solutions delivering optical transceivers with Tbit/s data rates and energy consumption$<$1pJ/bit. Here, we report double single-layer graphene electro-absorption modulators on Si optimized for energy-efficient and ultra-fast operation, demonstrating 67GHz bandwidth and 80Gbit/s data rate, in both O and C bands, using a fabrication tailored for wafer-scale integrati…

Tuning Shear Rheology through Active Dopants
Amir Shee, Ritwik Bandyopadhyay, Haicen Yue
https://arxiv.org/abs/2506.05262 https://arx…

Tuning Shear Rheology through Active Dopants
We numerically investigate the shear rheology of mixtures of active and passive Brownian particles, with varying fractions of active components. We find that even a small fraction of active dopants triggers fluidization with comparable efficiency to fully active systems. A combined parameter, active energy, given by dopant fraction multiplied by propulsion speed squared controls the shear rheology and glass transition of the active-passive mixtures. These results together provide a quantitative…

Novel Experimental Platform to realize One-dimensional Quantum Fluids
Stephanie McNamara, Prabin Parajuli, Sutirtha Paul, Garfield Warren, Adrian Del Maestro, Paul E. Sokol
https://arxiv.org/abs/2506.03200

Novel Experimental Platform to realize One-dimensional Quantum Fluids
Templated porous materials, such as MCM-41, due to the uniformity of their onedimensional structure and scalability in synthesis, have emerged as an attractive medium for studying one-dimensional quantum fluids. However, the experimental challenge of synthesizing these materials with pore radii smaller than 15 Angstroms hinders the realization of a one-dimensional quantum liquid of helium within such systems, as the coherence length of helium is shorter than the pore radius. Recently, DelMaestr…

Modelling the evolution of flow-induced anisotropy of concentrated suspensions
Pappu Acharya, Romain Mari
https://arxiv.org/abs/2506.05222 https://

Modelling the evolution of flow-induced anisotropy of concentrated suspensions
Suspensions, which exhibit complex behaviors such as shear thickening, thinning, and jamming, are prevalent in nature and industry. However, predicting the mechanical properties of concentrated suspensions, in both steady state and the transient regime, remains a significant challenge, impacting product quality and process efficiency. In this study, we focus on developing a robust theoretical framework to explain how flow history governs the anisotropy of mechanical responses in suspensions of …

[2025-06-05 Thu (UTC), 14 new articles found for cond-mat.mtrl-sci Materials Science]
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Chirality Amplification and Deracemization in Liquid Crystals
Matthew J. Deutsch, Robin L. B. Selinger, Paul van der Schoot
https://arxiv.org/abs/2506.05053

Chirality Amplification and Deracemization in Liquid Crystals
Liquid crystal mesophases of achiral molecules are normally achiral, yet in a few materials they spontaneously deracemize and form right- and left-handed chiral domains. One mechanism that drives deracemization is molecular shape fluctuations between axial chiral conformations, where molecular interactions favor matching chirality and promote helical twist. Cooperative chiral ordering may also play a role in chirality amplification, as when a tiny fraction of chiral dopant drives a nematic phas…

This https://arxiv.org/abs/2505.17212 has been replaced.
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Engineering Altermagnetism via Layer Shifts and Spin Order in Bilayer MnPS$_3$
We investigate how stacking configuration and magnetic ordering determine the magnetic phases of bilayer MnPS$_3$, using density-functional theory and spin-Laue symmetry analysis. While monolayer MnPS$_3$ is a collinear antiferromagnet with no spin splitting, our calculations show that the bilayer can host either Type II (AFM) or Type III (altermagnetic) phases depending sensitively on stacking and spin alignment. We focus on two representative stackings: AA, where the top layer sits directly a…

Complexity reduction of physical models: an equation-free approach by means of scaling
Simone Rusconi, Christina Schenk, Razvan Ceuca, Arghir Zarnescu, Elena Akhmatskaya
https://arxiv.org/abs/2506.05029

Complexity reduction of physical models: an equation-free approach by means of scaling
The description of complex physical phenomena often involves sophisticated models that rely on a large number of parameters, with many dimensions and scales. One practical way to simplify that kind of models is to discard some of the parameters, or terms of underlying equations, thus giving rise to reduced models. Here, we propose a general approach to obtaining such reduced models. The method is independent of the model in use, i.e., equation-free, depends only on the interplay between the sca…

This https://arxiv.org/abs/2505.16779 has been replaced.
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Phase engineering of MoS$_2$ monolayers: A pathway to enhanced lithium-polysulfide battery performance
This study explores the potential of MoS$_2$ polymorphs, specifically the semiconducting 2H phase and the metallic 1T$^\prime$ phase, as anchoring materials to enhance the electrochemical performance of lithium-sulfur (Li--S) batteries. Using density functional theory calculations, we show that 1T$^\prime$-MoS$_2$ exhibits stronger Li--S interactions, greater charge transfer, and enhanced catalytic activity compared to its 2H counterpart, effectively suppressing polysulfide dissolution and faci…

Dynamics of Wound Closure in Living Nematic Epithelia
Henry Andralojc, Jake Turley, Helen Weavers, Paul Martin, Isaac V. Chenchiah, Rachel R. Bennett, Tanniemola B. Liverpool
https://arxiv.org/abs/2506.04922

Dynamics of Wound Closure in Living Nematic Epithelia
We study theoretically the closure of a wound in a layer of epithelial cells in a living tissue after damage. Our analysis is informed by our recent experiments observing re-epithelialisation in vivo of Drosophila pupae. On time and length-scales such that the evolution of the epithelial tissue near the wound is well captured by that of a 2D active fluid with local nematic order, we consider the free-surface problem of a hole in a bounded region of tissue, and study the role that active stresse…

This https://arxiv.org/abs/2505.08502 has been replaced.
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Demonstration of Advanced Timing Schemes in Time-Resolved X-ray Diffraction Measurements
We present time-resolved X-ray diffraction measurements using advanced timing schemes that provide high temporal resolution while also maintaining a high flux in the X-ray probe beam. The method employs patterned probe pulse sequences that are generated with the WaveGate solid-state pulse picker. We demonstrate the feasibility of our method at two different beamlines on millisecond and microsecond timescales.

polyBART: A Chemical Linguist for Polymer Property Prediction and Generative Design
Anagha Savit, Harikrishna Sahu, Shivank Shukla, Wei Xiong, Rampi Ramprasad
https://arxiv.org/abs/2506.04233

polyBART: A Chemical Linguist for Polymer Property Prediction and Generative Design
Designing polymers for targeted applications and accurately predicting their properties is a key challenge in materials science owing to the vast and complex polymer chemical space. While molecular language models have proven effective in solving analogous problems for molecular discovery, similar advancements for polymers are limited. To address this gap, we propose polyBART, a language model-driven polymer discovery capability that enables rapid and accurate exploration of the polymer design …

This https://arxiv.org/abs/2504.08625 has been replaced.
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A simple method for detection and quantitative estimation of deep levels in a barrier layer of AlGaN/GaN HEMT structures by analysis of light induced threshold voltage shift
The characterization of deep levels in AlGaN/GaN heterostructures is one of the most important problems in GaN high electron mobility transistors (HEMTs) technology. This work reports on a technique for determination of deep level concentration in AlGaN/GaN HEMT structures. The proposed method is relatively simple, and it is based on the detection of free holes created by optically induced transitions of electrons from the deep levels to the conduction band. The developed method can detect and …

[2025-06-06 Fri (UTC), 8 new articles found for cond-mat.soft Soft Condensed Matter]
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This https://arxiv.org/abs/2503.02407 has been replaced.
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Wyckoff Transformer: Generation of Symmetric Crystals
Crystal symmetry plays a fundamental role in determining its physical, chemical, and electronic properties such as electrical and thermal conductivity, optical and polarization behavior, and mechanical strength. Almost all known crystalline materials have internal symmetry. However, this is often inadequately addressed by existing generative models, making the consistent generation of stable and symmetrically valid crystal structures a significant challenge. We introduce WyFormer, a generative …

This https://arxiv.org/abs/2502.03055 has been replaced.
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Imprinting of skyrmions and bimerons in an antiferromagnet
Topologically protected magnetic states in condensed matter physics, particularly antiferromagnetic (AFM) skyrmions (Sks) and bimerons (Bms), offer promising prospects for terahertz dynamics and sustained current-induced motion, thanks to their compensating multiple sub-lattice structure. However, nucleating AFM Sks and Bms is challenging due to the lack of net magnetization. Previous attempts to imprint pre-defined Sks and Bms in a ferromagnet (FM) and transfer them to an AFM using interfacial…

This https://arxiv.org/abs/2501.08530 has been replaced.
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Nanoscale structure formation in nickel-aluminum alloys synthesized far from equilibrium
The present study reports on the structure formation in thin epitaxial nickel-aluminum films (Ni1-xAlx; Al atomic fraction x up to x=0.24) grown on MgO(001) substrates by magnetron sputtering. Experimental and computational data demonstrate that for x<0.11, the films exhibit the face-centered cubic random solid-solution Ni1-xAlx structure (γ). Whereas in the range x=0.11-0.24 the phase coexists with the ordered L12 structure (γ' phase). The two phases are homogenously intermixed forming a coh…

This https://arxiv.org/abs/2411.14608 has been replaced.
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Toward machine learning interatomic potentials for modeling uranium mononitride
Uranium mononitride (UN) is a promising accident-tolerant fuel because of its high fissile density and high thermal conductivity. In this study, we developed the first machine learning interatomic potentials for reliable atomic-scale modeling of UN at finite temperatures. We constructed a training set using density functional theory (DFT) calculations that was enriched through an active learning procedure, and two neural network potentials were generated. Both potentials successfully reproduce …

This https://arxiv.org/abs/2410.02292 has been replaced.
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Two-dimensional materials as ideal substrates for molecular quantum emitters
The generation and manipulation of non-classical states of light is central to quantum technologies. Color centers in insulators have been extensively studied for single-photon generation, but organic molecules immobilized on substrates have gained attention due to their superior scalability, large oscillator strengths, and tunable emission frequency. Here, we use first-principles calculations to investigate the photoemission from organic molecules adsorbed on 2D materials. Focusing on terrylen…

This https://arxiv.org/abs/2408.08683 has been replaced.
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Atomic and inter-atomic orbital magnetization induced in SrTiO$_3$ by chiral phonons
An unexpectedly large transient magnetization induced by circularly polarized ferroelectric phonons was recently observed in a nonmagnetic insulator SrTiO3 [Nature 628, 534 (2024)]. We use a minimal molecular orbital model to demonstrate two electronic contributions to this effect. An atomic orbital contribution arises from the pumping of orbital angular momentum of Ti by chiral motion of coordinating oxygen atoms. An additional inter-atomic contribution is associated with the transient circula…

This https://arxiv.org/abs/2308.16070 has been replaced.
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Giant piezoelectricity driven by Thouless pump in conjugated polymers
Piezoelectricity of organic polymers has attracted increasing interest because of several advantages they exhibit over traditional inorganic ceramics. While most organic piezoelectrics rely on the presence of intrinsic local dipoles, a highly nonlocal electronic polarization can be foreseen in conjugated polymers, characterised by delocalized and highly responsive $π$-electrons. These 1D systems represent a physical realization of a Thouless pump, a mechanism of adiabatic charge transport of t…

Exciton-Exciton Annihilation Mediated by Many-Body Coulomb and Phonon Interactions: An Ab Initio Study
Guy Vosco, Sivan Refaely-Abramson
https://arxiv.org/abs/2506.05223

Exciton-Exciton Annihilation Mediated by Many-Body Coulomb and Phonon Interactions: An Ab Initio Study
Exciton-exciton annihilation (EEA), in which two excitons interact to generate high-energy excitations, is an important non-radiative channel in light-induced excited-state relaxation. When efficient, this process offers an alternative route to exciton emission, potentially allowing extended energetically excited particles' lifetime and coherence. These properties are significant in designing and understanding materials-based quantum devices, particularly for low-dimensional semiconductors. Her…

Designer polyradical nanographenes with strong spin entanglement and perturbation resilience via Clar's goblet extension
En Li, Manish Kumar, Xinnan Peng, Tong Shen, Diego Soler-Polo, Yu Wang, Yu Teng, Haoyu Zhang, Shaotang Song, Jishan Wu, Pavel Jelinek, Jiong Lu
https://arxiv.org/abs/2506.05181

Designer polyradical nanographenes with strong spin entanglement and perturbation resilience via Clar's goblet extension
Polyradical nanographenes featuring strong spin entanglement and robust many-body spin states against external magnetic perturbations not only enable the exploration of correlated quantum magnetism at the molecular scale, but also constitute promising candidates for developing molecular qubits with chemical tunability and building scalable quantum networks. Here, we employed a predictive design strategy to achieve the on-surface synthesis of two homologues of Clar goblet, C62H22 and C76H26, via…

Classification and enumeration of solid-solid phase transition mechanisms
Fang-Cheng Wang, Qi-Jun Ye, Yu-Cheng Zhu, Xin-Zheng Li
https://arxiv.org/abs/2506.05105

Classification and enumeration of solid-solid phase transition mechanisms
Crystal-structure match (CSM), the atom-to-atom correspondence between two crystalline phases, is used extensively to describe solid-solid phase transition (SSPT) mechanisms. However, existing computational methods cannot account for all possible CSMs. Here, we propose a formalism to classify all CSMs into a tree structure, which is independent of the choices of unit cell and supercell. We rigorously proved that only a finite number of noncongruent CSMs are of practical interest. By representin…

This https://arxiv.org/abs/2506.01515 has been replaced.
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Fully characterized linear magnetoelectric response of 2D monolayers from high-throughput first-principles calculations
We screen 4784 stable monolayers from the Computational 2D Materials Database (C2DB) and identify 57 ferromagnetic (FM) and 67 antiferromagnetic (AFM) that should exhibit linear magnetoelectric (ME) effects. Using density functional theory, we compute contributions from the spin and orbital angular momentum as well as lattice-mediated and clamped-ion analogs to fully characterize the linear ME tensor in the static limit. We observe a general trend that AFM ordering gives rise to a larger ME res…

This https://arxiv.org/abs/2506.01402 has been replaced.
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Sliding Ferroelectrics Induced Hybrid-Order Topological Phase Transitions
We propose ferroelectric layer sliding as a new approach to realize and manipulate topological quantum states in two-dimensional (2D) bilayer magnetic van der Waals materials. We show that stacking monolayer ferromagnetic topological states into layer-spin-locked bilayer antiferromagnetic structures, and introducing sliding ferroelectricity leads to asynchronous topological evolution of different layers (spins) owing to existence of polarization potentials, thereby giving rise to rich layer-res…

This https://arxiv.org/abs/2505.16016 has been replaced.
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Electronic mobility, doping, and defects in epitaxial $\mathrm{BaZrS_3}$ chalcogenide perovskite thin films
We present the electronic transport properties of $\mathrm{BaZrS_3}$ (BZS) thin films grown epitaxially by gas-source molecular beam epitaxy (MBE). We observe n-type behavior in all samples, with carrier concentration ranging from $4 \times 10^{18}$ to $4 \times 10^{20} \mathrm{cm^{-3}}$ at room temperature (RT). We observe a champion RT Hall mobility of 11.1 $\mathrm{cm^2V^{-1}s^{-1}}$, which is competitive with established thin-film photovoltaic (PV) absorbers. Temperature-dependent Hall mobi…

This https://arxiv.org/abs/2505.07752 has been replaced.
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Mapping of Microstructure Transitions during Rapid Alloy Solidification Using Bayesian-Guided Phase-Field Simulations
This study addresses microstructure selection mechanisms in rapid solidification, specifically targeting the transition from cellular/dendritic to planar interface morphologies under conditions relevant to additive manufacturing. We use a phase-field model that quantitatively captures solute trapping, kinetic undercooling, and morphological instabilities across a broad range of growth velocities ($V$) and thermal gradients ($G$), and apply it to a binary Fe-Cr alloy, as a surrogate for 316L sta…