arXiv - PHYS - Soft Condensed Matter最新文献_第3页

Geometric control and memory in networks of bistable elements 双稳态元素网络中的几何控制和记忆

arXiv - PHYS - Soft Condensed Matter Pub Date : 2024-09-12 DOI: arxiv-2409.07804

Dor Shohat, Martin van Hecke

引用次数: 0

Mechanical hysterons with tunable interactions of general sign 具有一般符号可调相互作用的机械滞留器

arXiv - PHYS - Soft Condensed Matter Pub Date : 2024-09-12 DOI: arxiv-2409.07726

Joseph D. Paulsen

引用次数: 0

Reversible Electron-Beam Patterning of Colloidal Nanoparticles at Fluid Interfaces 流体界面胶体纳米粒子的可逆电子束图案化

arXiv - PHYS - Soft Condensed Matter Pub Date : 2024-09-12 DOI: arxiv-2409.08192

Jonathan G. Raybin, Ethan J. Dunsworth, Veronica Guo, Naomi S. Ginsberg

{"title":"Reversible Electron-Beam Patterning of Colloidal Nanoparticles at Fluid Interfaces","authors":"Jonathan G. Raybin, Ethan J. Dunsworth, Veronica Guo, Naomi S. Ginsberg","doi":"arxiv-2409.08192","DOIUrl":"https://doi.org/arxiv-2409.08192","url":null,"abstract":"The directed self-assembly of colloidal nanoparticles (NPs) using external\u0000fields guides the formation of sophisticated hierarchical materials but becomes\u0000less effective with decreasing particle size. As an alternative,\u0000electron-beam-driven assembly offers a potential avenue for targeted nanoscale\u0000manipulation, yet remains poorly controlled due to the variety and complexity\u0000of beam interaction mechanisms. Here, we investigate the beam-particle\u0000interaction of silica NPs pinned to the fluid-vacuum interface of ionic liquid\u0000droplets. In these experiments, scanning electron microscopy of the droplet\u0000surface resolves NP trajectories over space and time while simultaneously\u0000driving their reorganization. With this platform, we demonstrate the ability to\u0000direct particle transport and create transient, reversible colloidal patterns\u0000on the droplet surface. By tuning the beam voltage, we achieve precise control\u0000over both the strength and sign of the beam-particle interaction, with low\u0000voltages repelling particles and high voltages attracting them. This response\u0000stems from the formation of well-defined solvent flow fields generated from\u0000trace radiolysis of the ionic liquid, as determined through statistical\u0000analysis of single-particle trajectories under varying solvent composition.\u0000Altogether, electron-beam-guided assembly introduces a versatile strategy for\u0000nanoscale colloidal manipulation, offering new possibilities for the design of\u0000dynamic, reconfigurable systems with applications in adaptive photonics and\u0000catalysis.","PeriodicalId":501146,"journal":{"name":"arXiv - PHYS - Soft Condensed Matter","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142220783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-organization and memory in a cyclically driven elasto-plastic model of an amorphous solid 无定形固体循环驱动弹塑性模型中的自组织和记忆

arXiv - PHYS - Soft Condensed Matter Pub Date : 2024-09-11 DOI: arxiv-2409.07621

Dheeraj Kumar, Muhittin Mungan, Sylvain Patinet, Damien Vandembroucq

引用次数: 0

Anomalous behavior of electric-field Fréedericksz transitions 电场弗雷德里克兹转换的反常行为

arXiv - PHYS - Soft Condensed Matter Pub Date : 2024-09-11 DOI: arxiv-2409.07654

Eugene C. Gartland Jr

{"title":"Anomalous behavior of electric-field Fréedericksz transitions","authors":"Eugene C. Gartland Jr","doi":"arxiv-2409.07654","DOIUrl":"https://doi.org/arxiv-2409.07654","url":null,"abstract":"Fr'eedericksz transitions in nematic liquid crystals are re-examined with a\u0000focus on differences between systems with magnetic fields and those with\u0000electric fields. A magnetic field can be treated as uniform in a liquid-crystal\u0000medium; while a nonuniform director field will in general cause nonuniformity\u0000of the local electric field as well. Despite these differences, the widely held\u0000view is that the formula for the threshold of local instability in an\u0000electric-field Fr'eedericksz transition can be obtained from that for the\u0000magnetic-field transition in the same geometry by simply replacing the magnetic\u0000parameters by their electric counterparts. However, it was shown in [Arakelyan,\u0000Karayan, and Chilingaryan, Sov. Phys. Dokl., 29 (1984) 202-204] that in two of\u0000the six classical electric-field Fr'eedericksz transitions, the\u0000local-instability threshold should be strictly greater than that predicted by\u0000this magnetic-field analogy. Why this elevation of the threshold occurs is\u0000carefully examined, and a simple test to determine when it can happen is given.\u0000This \"anomalous behavior\" is not restricted to classical Fr'eedericksz\u0000transitions and is shown to be present in certain layered systems (planar\u0000cholesterics, smectic-A) and in certain nematic systems that exhibit periodic\u0000instabilities.","PeriodicalId":501146,"journal":{"name":"arXiv - PHYS - Soft Condensed Matter","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142220589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phase separation bursting and symmetry breaking inside an evaporating droplet; formation of a flower-like pattern 蒸发液滴内部的相分离迸发和对称性破坏；形成花朵状图案

arXiv - PHYS - Soft Condensed Matter Pub Date : 2024-09-11 DOI: arxiv-2409.07095

Vahid Nasirimarekani

引用次数: 0

Hydrodynamic Spin-Pairing and Active Polymerization of Oppositely Spinning Rotors 对向旋转转子的水动力自旋配对和主动聚合作用

arXiv - PHYS - Soft Condensed Matter Pub Date : 2024-09-11 DOI: arxiv-2409.07554

Mattan Gelvan, Artyom Chirko, Jonathan Kirpitch, Yahav Lavie, Noa Israel, Naomi Oppenheimer

{"title":"Hydrodynamic Spin-Pairing and Active Polymerization of Oppositely Spinning Rotors","authors":"Mattan Gelvan, Artyom Chirko, Jonathan Kirpitch, Yahav Lavie, Noa Israel, Naomi Oppenheimer","doi":"arxiv-2409.07554","DOIUrl":"https://doi.org/arxiv-2409.07554","url":null,"abstract":"Rotors are common in nature - from rotating membrane-proteins to\u0000superfluid-vortices. Yet, little is known about the collective dynamics of\u0000heterogeneous populations of rotors. Here, we show experimentally, numerically,\u0000and analytically that at small but finite inertia, a mixed population of\u0000oppositely spinning rotors spontaneously self-assembles into active chains,\u0000which we term gyromers. The gyromers are formed and stabilized by fluid motion\u0000and steric interactions alone. A detailed analysis of pair interaction shows\u0000that rotors with the same spin repel and orbit each other while opposite rotors\u0000spin-pair and propagate together as bound dimers. Rotor dimers interact with\u0000individual rotors, each other, and the boundaries to form chains. A minimal\u0000model predicts the formation of gyromers in numerical simulations and their\u0000possible subsequent folding into secondary structures of lattices and rings.\u0000This inherently out-of-equilibrium polymerization process holds promise for\u0000engineering self-assembled metamaterials such as artificial proteins.","PeriodicalId":501146,"journal":{"name":"arXiv - PHYS - Soft Condensed Matter","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142220590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Programmable self-assembly of core-shell ellipsoids at liquid interfaces 液体界面上核-壳椭圆体的可编程自组装

arXiv - PHYS - Soft Condensed Matter Pub Date : 2024-09-11 DOI: arxiv-2409.07443

Jack Eatson, Susann Bauernfeind, Benjamin Midtvedt, Antonio Ciarlo, Johannes Menath, Giuseppe Pesce, Andrew B. Schofield, Giovanni Volpe, Paul S. Clegg, Nicolas Vogel, D. Martin. A. Buzza, Marcel Rey

{"title":"Programmable self-assembly of core-shell ellipsoids at liquid interfaces","authors":"Jack Eatson, Susann Bauernfeind, Benjamin Midtvedt, Antonio Ciarlo, Johannes Menath, Giuseppe Pesce, Andrew B. Schofield, Giovanni Volpe, Paul S. Clegg, Nicolas Vogel, D. Martin. A. Buzza, Marcel Rey","doi":"arxiv-2409.07443","DOIUrl":"https://doi.org/arxiv-2409.07443","url":null,"abstract":"Ellipsoidal particles confined at liquid interfaces exhibit complex\u0000self-assembly behaviour due to quadrupolar capillary interactions induced by\u0000meniscus deformation. These interactions cause particles to attract each other\u0000in either tip-to-tip or side-to-side configurations. However, controlling their\u0000interfacial self-assembly is challenging because it is difficult to predict\u0000which of these two states will be preferred. In this study, we demonstrate that\u0000introducing a soft shell around hard ellipsoidal particles provides a means to\u0000control the self-assembly process, allowing us to switch the preferred\u0000configuration between these states. We study their interfacial self-assembly\u0000and find that pure ellipsoids without a shell consistently form a \"chain-like\"\u0000side-to-side assembly, regardless of aspect ratio. In contrast, core-shell\u0000ellipsoids transition from \"flower-like\" tip-to-tip to \"chain-like\"\u0000side-to-side arrangements as their aspect ratios increase. The critical aspect\u0000ratio for transitioning between these structures increases with shell-to-core\u0000ratios. Our experimental findings are corroborated by theoretical calculations\u0000and Monte Carlo simulations, which map out the phase diagram of\u0000thermodynamically preferred self-assembly structures for core-shell ellipsoids\u0000as a function of aspect ratio and shell-to-core ratios. This study shows how to\u0000program the self-assembly of anisotropic particles by tuning their\u0000physicochemical properties, allowing the deterministic realization of distinct\u0000structural configurations.","PeriodicalId":501146,"journal":{"name":"arXiv - PHYS - Soft Condensed Matter","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Curvature induces and enhances transport of spinning colloids through narrow channels 曲率诱导并增强旋转胶体在狭窄通道中的传输

arXiv - PHYS - Soft Condensed Matter Pub Date : 2024-09-11 DOI: arxiv-2409.07661

Eric Cereceda-López, Marco De Corato, Ignacio Pagonabarraga, Fanlong Meng, Pietro Tierno, Antonio Ortiz-Ambriz

{"title":"Curvature induces and enhances transport of spinning colloids through narrow channels","authors":"Eric Cereceda-López, Marco De Corato, Ignacio Pagonabarraga, Fanlong Meng, Pietro Tierno, Antonio Ortiz-Ambriz","doi":"arxiv-2409.07661","DOIUrl":"https://doi.org/arxiv-2409.07661","url":null,"abstract":"The effect of curvature and how it induces and enhances the transport of\u0000colloidal particles driven through narrow channels represent an unexplored\u0000research avenue. Here we combine experiments and simulations to investigate the\u0000dynamics of magnetically driven colloidal particles confined through a narrow,\u0000circular channel. We use an external precessing magnetic field to induce a net\u0000torque and spin the particles at a defined angular velocity. Due to the\u0000spinning, the particle propulsion emerges from the different hydrodynamic\u0000coupling with the inner and outer walls and strongly depends on the curvature.\u0000The experimental findings are combined with finite element numerical\u0000simulations that predict a positive rotation translation coupling in the\u0000mobility matrix. Further, we explore the collective transport of many particles\u0000across the curved geometry, making an experimental realization of a driven\u0000single file system. With our finding, we elucidate the effect of curvature on\u0000the transport of microscopic particles which could be important to understand\u0000the complex, yet rich, dynamics of particle systems driven through curved\u0000microfluidic channels.","PeriodicalId":501146,"journal":{"name":"arXiv - PHYS - Soft Condensed Matter","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Protocol dependence for avalanches under constant stress in elastoplastic models 弹塑性模型中恒定应力下雪崩的协议依赖性

arXiv - PHYS - Soft Condensed Matter Pub Date : 2024-09-09 DOI: arxiv-2409.05444

Tristan Jocteur, Eric Bertin, Romain Mari, Kirsten Martens

{"title":"Protocol dependence for avalanches under constant stress in elastoplastic models","authors":"Tristan Jocteur, Eric Bertin, Romain Mari, Kirsten Martens","doi":"arxiv-2409.05444","DOIUrl":"https://doi.org/arxiv-2409.05444","url":null,"abstract":"Close to the yielding transition, amorphous solids exhibit a jerky dynamics\u0000characterized by plastic avalanches. The statistics of these avalanches have\u0000been measured experimentally and numerically using a variety of different\u0000triggering protocols, assuming that all of them were equivalent for this\u0000purpose. In particular two main classes of protocols have been studied,\u0000deformation under controlled strain or under controlled stress. In this work,\u0000we investigate different protocols to generate plasticity avalanches and\u0000conduct twodimensional simulations of an elastoplastic model to examine the\u0000protocol dependence of avalanche statistics in yield-stress fluids. We\u0000demonstrate that when stress is controlled, the value and even the existence of\u0000the exponent governing the probability distribution function of avalanche sizes\u0000strongly depend on the protocol chosen to initiate avalanches. This confirms in\u0000finite dimensions a scenario presented in a previous mean-field analysis. We\u0000identify a consistent stress-controlled protocol whose associated avalanches\u0000differ from the quasi-static ones in their fractal dimension and dynamical\u0000exponent. Remarkably, this protocol also seems to verify the scaling relations\u0000among exponents previously proposed. Our results underscores the necessity for\u0000a cautious interpretation of avalanche universality within elastoplastic\u0000models, and more generally within systems where several control parameters\u0000exist.","PeriodicalId":501146,"journal":{"name":"arXiv - PHYS - Soft Condensed Matter","volume":"296 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142220625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0