The glass transition of mesoscopic charged particles in two-dimensional confinement is studied by mode-coupling theory. We consider two types of effective interactions between the particles, corresponding to two different models for the distribution of surrounding ions that are integrated out in coarse-grained descriptions. In the first model, a planar monolayer of charged particles is immersed in an unbounded isotropic bath of ions, giving rise to an isotropically screened Debye-Hückel- (Yukawa-) type effective interaction. The second, experimentally more relevant system is a monolayer of negatively charged particles that levitate atop a flat horizontal electrode, as frequently encountered in laboratory experiments with complex (dusty) plasmas. A steady plasma current towards the electrode gives rise to an anisotropic effective interaction potential between the particles, with an algebraically long-ranged in-plane decay. In a comprehensive parameter scan that covers the typical range of experimentally accessible plasma conditions, we calculate and compare the mode-coupling predictions for the glass transition in both kinds of systems.
Macroscopic active matter under confinement: dynamical heterogeneity, bursts, and glassy behavior in a few-body system of self-propelling camphor surfers
Université Paris-Saclay(巴黎萨克雷大学);CNRS, IJCLab(法国国家科学研究中心,原子核与亚原子物理实验室);Dipartimento di Fisica, Sapienza Università di Roma(罗马大学物理系);Department of Physics, California State University Fullerton(加州州立大学富勒顿分校物理系);Department of Chemistry, California State University Fullerton(加州州立大学富勒顿分校化学系);Université de Toulouse(图卢兹大学);CNRS, Laboratoire de Physique Théorique(法国国家科学研究中心,理论物理实验室);CNRS, Centre de Biologie Intégrative(法国国家科学研究中心,综合生物学中心)
Reply to: Comment on `Long-range electrostatic interactions between like-charged colloids: steric and confinement effects'
Mateescu在他对[Phys.Rev.E60,6530(1999)]的评论(cond-mat/0104060)中表明,当通过修正的泊松-玻尔兹曼方程考虑微离子的特定尺寸时,有效相互作用仍然是排斥性的,但是对于完全横向限制的情况,不能得出类似的结论。这一点是正确的,但在更一般的研究中已经考虑过了[Phys. Rev. E 62,R1465(2000),在那里一般得到排斥];此外,我们认为,它说明了在完全受限的配置中对势的概念是无关紧要的,如一个简单的例子所示。
Non-equilibrium thermodynamics.III. Thermodynamic Principles, Entropy Continuity during Component Confinement, Energy Gap and the Residual Entropy
为了研究组分约束的后果,例如在玻璃化转变和众所周知的能量或焓隙(在绝对零度下玻璃和完美晶体之间,见正文),我们遵循我们以前的方法[Phys. Rev. E 81,051130(2010)],将第二定律应用于由均匀系统孤立系和介质组成的系统。我们建立了一般的理由吉布斯自由能G(t)的连续性作为时间的函数在固定的温度和压力的介质。从这一点和观察到的组分限制期间焓的连续性,可以立即得出,开放系统的熵S在组分限制期间(例如在玻璃化转变时)必须保持连续。我们使用这些连续性和最近开发的非平衡态热力学制定的热力学原理的可加性,再现性,连续性和稳定性,也必须适用于非平衡系统的内部平衡。我们发现,在玻璃化转变过程中的不可逆性只证明剩余熵S_{R}至少是尽可能多的不可逆性,在该领域的一种常见的做法,通过忽视确定。这证明了玻璃中的非零剩余熵S_{R}是合理的,这也与绝对零度下的能量或焓隙一致。我们建立了一个非平衡系统熵的统计公式,根据第二定律,得到了组分禁闭过程中熵的连续性,揭示了剩余熵背后的奥秘,这与我们最近的结论[Symmetry 2,1201(2010)]是一致的。
Phase Diagram and Criticality of the Modified Primitive Electrolyte Model in Bulk and in Inert and Conducting Confinement
Stuttgart Center for Simulation Science (SC SimTech), University of Stuttgart(斯图加特大学);Institute for Computational Physics, University of Stuttgart(斯图加特大学计算物理研究所);Institute for Physics of Functional Materials, Hamburg University of Technology(汉堡工业大学功能材料物理研究所)