Aging behavior of the localization length in a colloidal glass

被引：15
作者：
Angelini, R. [1 ,2 ]
Madsen, A. [3 ]
Fluerasu, A. [4 ]
Ruocco, G. [2 ,5 ]
Ruzicka, B. [1 ,2 ]
机构：
[1] IPCF CNR, I-00185 Rome, Italy
[2] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[3] European Xray Free Electron Laser Facil, D-22761 Hamburg, Germany
[4] Brookhaven Natl Lab, NSLS II, Upton, NY 11973 USA
[5] Ist Italiano Tecnol, IIT Sapienza, Ctr Life Nano Sci, I-00161 Rome, Italy
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2014年 / 460卷
关键词：
PHASE-BEHAVIOR; SUSPENSIONS; LAPONITE; DYNAMICS;
D O I：
10.1016/j.colsurfa.2014.03.087
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：
The localization length r(loc) associated with a fast secondary relaxation in glassy Laponite is determined by X-ray photon correlation spectroscopy (XPCS) through a Debye-Waller fit of the non-ergodicity parameter. Quantitative differences are observed between the time dependence (aging) of r(loc) in spontaneously aged and rejuvenated samples. This behavior is also reflected in the calculated shear modulus which matches well with data obtained by rheological measurements. (C) 2014 Elsevier B.V. All rights reserved.
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页码：118 / 122
页数：5
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