Flexible confinement leads to multiple relaxation regimes in glassy colloidal liquids

被引：16

作者：

Williams, Ian ^{[1
,2
,3
]}

Oguz, Erdal C. ^{[4
,5
]}

Bartlett, Paul ^{[2
]}

Loewen, Hartmut ^{[5
]}

Royall, C. Patrick ^{[1
,2
,3
]}

机构：

[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[2] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England

[3] Ctr Nanosci & Quantum Informat, Bristol BS8 1FD, Avon, England

[4] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

[5] Univ Dusseldorf, Inst Theoret Phys 2, D-40225 Dusseldorf, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 2015年 / 142卷 / 02期

基金：

欧洲研究理事会;

关键词：

DYNAMICAL HETEROGENEITIES; SLOW DYNAMICS; TRANSITION; MODEL; TEMPERATURE; SIZE;

D O I：

10.1063/1.4905472

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Understanding relaxation of supercooled fluids is a major challenge and confining such systems can lead to bewildering behaviour. Here, we exploit an optically confined colloidal model system in which we use reduced pressure as a control parameter. The dynamics of the system are "Arrhenius" at low and moderate pressure, but at higher pressures relaxation is faster than expected. We associate this faster relaxation with a decrease in density adjacent to the confining boundary due to local ordering in the system enabled by the flexible wall. (C) 2015 AIP Publishing LLC.

引用

页数：7

共 68 条

[1] ON TEMPERATURE DEPENDENCE OF COOPERATIVE RELAXATION PROPERTIES IN GLASS-FORMING LIQUIDS [J].

ADAM, G ;

GIBBS, JH .

JOURNAL OF CHEMICAL PHYSICS, 1965, 43 (01) :139-&

[2] Effects of confinement on freezing and melting [J].

Alba-Simionesco, C. ;

Coasne, B. ;

Dosseh, G. ;

Dudziak, G. ;

Gubbins, K. E. ;

Radhakrishnan, R. ;

Sliwinska-Bartkowiak, M. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2006, 18 (06) :R15-R68

[3] Effects of confinement on material behaviour at the nanometre size scale [J].

Alcoutlabi, M ;

McKenna, GB .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (15) :R461-R524

[4] FORMATION OF GLASSES FROM LIQUIDS AND BIOPOLYMERS [J].

ANGELL, CA .

SCIENCE, 1995, 267 (5206) :1924-1935

[5]

[Anonymous], NATURE

[6] Length scale of cooperativity in the dynamic glass transition [J].

Arndt, M ;

Stannarius, R ;

Groothues, H ;

Hempel, E ;

Kremer, F .

PHYSICAL REVIEW LETTERS, 1997, 79 (11) :2077-2080

[7] WHAT IS LIQUID - UNDERSTANDING STATES OF MATTER [J].

BARKER, JA ;

HENDERSON, D .

REVIEWS OF MODERN PHYSICS, 1976, 48 (04) :587-671

[8] Glass transition in liquids: Two versus three-dimensional confinement [J].

Barut, G ;

Pissis, P ;

Pelster, R ;

Nimtz, G .

PHYSICAL REVIEW LETTERS, 1998, 80 (16) :3543-3546

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

Bernard, Etienne P. ;

Krauth, Werner .

PHYSICAL REVIEW LETTERS, 2011, 107 (15)

[10] Static point-to-set correlations in glass-forming liquids [J].

Berthier, Ludovic ;

Kob, Walter .

PHYSICAL REVIEW E, 2012, 85 (01)

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