Nizam Ü Seleme, Makey Ghaith, Barbier Michaël, Kahraman S Süleyman, Demir Esin, Shafigh Ehsan E, Galioglu Sezin, Vahabli Danial, Hüsnügil Sercan, Güneş Muhammed H, Yelesti Efe, Ilday Serim
UNAM-National Nanotechnology Research Center & Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey.
Department of Physics, Boğaziçi University, İstanbul, 34342, Turkey.
J Phys Condens Matter. 2021 Jun 18;33(30). doi: 10.1088/1361-648X/abf9b8.
Hyperuniformity is evolving to become a unifying concept that can help classify and characterize equilibrium and nonequilibrium states of matter. Therefore, understanding the extent of hyperuniformity in dissipative systems is critical. Here, we study the dynamic evolution of hyperuniformity in a driven dissipative colloidal system. We experimentally show and numerically verify that the hyperuniformity of a colloidal crystal is robust against various lattice imperfections and environmental perturbations. This robustness even manifests during crystal disassembly as the system switches between strong (class I), logarithmic (class II), weak (class III), and non-hyperuniform states. To aid analyses, we developed a comprehensive computational toolbox, enabling real-time characterization of hyperuniformity in real- and reciprocal-spaces together with the evolution of several order metric features, and measurements showing the effect of external perturbations on the spatiotemporal distribution of the particles. Our findings provide a new framework to understand the basic principles that drive a dissipative system to a hyperuniform state.
超均匀性正在演变成一个统一的概念，它可以帮助对物质的平衡态和非平衡态进行分类和表征。因此，了解耗散系统中超均匀性的程度至关重要。在这里，我们研究了驱动耗散胶体系统中超均匀性的动态演化。我们通过实验表明并通过数值验证，胶体晶体的超均匀性对各种晶格缺陷和环境扰动具有鲁棒性。这种鲁棒性甚至在晶体解体过程中也会表现出来，因为系统会在强（I类）、对数（II类）、弱（III类）和非超均匀状态之间切换。为了辅助分析，我们开发了一个综合计算工具箱，能够实时表征实空间和倒易空间中的超均匀性以及几个有序度量特征的演化，并测量外部扰动对粒子时空分布的影响。我们的发现提供了一个新的框架，以理解驱动耗散系统达到超均匀状态的基本原理。
