Long-wavelength fluctuations and the glass transition in two dimensions and three dimensions

被引：113

作者：

Vivek, Skanda ^{[1
]}

Kelleher, Colm P. ^{[2
,3
]}

Chaikin, Paul M. ^{[2
,3
]}

Weeks, Eric R. ^{[1
]}

机构：

[1] Emory Univ, Dept Phys, Atlanta, GA 30322 USA

[2] NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA

[3] NYU, Ctr Soft Matter Res, 550 1st Ave, New York, NY 10003 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2017年 / 114卷 / 08期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

colloidal glass transition; dimensionality; long-wavelength fluctuations; phase transition; two-dimensional physics; SUSPENSIONS; DYNAMICS; ABSENCE; SPHERES; ORDER;

D O I：

10.1073/pnas.1607226113

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Phase transitions significantly differ between 2D and 3D systems, but the influence of dimensionality on the glass transition is unresolved. We use microscopy to study colloidal systems as they approach their glass transitions at high concentrations and find differences between two dimensions and three dimensions. We find that, in two dimensions, particles can undergo large displacements without changing their position relative to their neighbors, in contrast with three dimensions. This is related to Mermin-Wagner long-wavelength fluctuations that influence phase transitions in two dimensions. However, when measuring particle motion only relative to their neighbors, two dimensions and three dimensions have similar behavior as the glass transition is approached, showing that the long-wavelength fluctuations do not cause a fundamental distinction between 2D and 3D glass transitions.

引用

页码：1850 / 1855

页数：6

共 42 条

[1] Two-Step Melting in Two Dimensions: First-Order Liquid-Hexatic Transition [J].