X-ray photon correlation spectroscopy studies of colloidal diffusion and the capillary modes of polymer films

被引：12

作者：

Mochrie, SGJ ^{[1
]}

Lurio, LB

Rühm, A

Lumma, D

Borthwick, M

Falus, P

Kim, HJ

Basu, JK

Lal, J

Sinha, SK

机构：

[1] Yale Univ, Dept Phys & Appl Phys, New Haven, CT 06520 USA

[2] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

[3] MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA

[4] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[5] MIT, Dept Phys, Cambridge, MA 02139 USA

[6] Sogang Univ, Dept Phys, Seoul 121742, South Korea

[7] Univ Illinois, Mat Res Lab, Urbana, IL 61801 USA

[8] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[9] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[10] Los Alamos Natl Lab, LANSCE, Los Alamos, NM 87545 USA

[11] Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA

来源：

PHYSICA B-CONDENSED MATTER | 2003年 / 336卷 / 1-2期

关键词：

XPCS; photon correlation spectroscopy; coherence; dynamics;

D O I：

10.1016/S0921-4526(03)00287-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The new method of X-ray photon correlation spectroscopy (XPCS) is introduced with reference to experiments studying diffusion in concentrated colloidal suspensions. It is shown that both the static structure and the diffusional dynamics of concentrated suspensions of polystyrene spheres in glycerol are well-described by theories developed for hard spheres. Next, XPCS experiments probing the dynamics of surface height fluctuations as a function of lateral length scale are described. Measurements were performed on polystyrene (PS) thin films of thicknesses varying from 840 to 3330 Angstrom at temperatures above the PS glass transition temperature. Within a range of wave vectors spanning 10(-4)-10(-3) Angstrom(-1), good agreement is found between the measured surface dynamics and the theory of overdamped thermal capillary waves on thin films. Quantitatively, the data can be accounted for using the viscosity of bulk PS. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：173 / 180

页数：8

共 36 条

[1] CORRELATIONS FOR INTERACTING BROWNIAN PARTICLES [J].

ACKERSON, BJ .

JOURNAL OF CHEMICAL PHYSICS, 1976, 64 (01) :242-246

[2] WAVE VECTOR DEPENDENT MUTUAL DIFFUSION OF INTERACTING BROWNIAN PARTICLES [J].

ALTENBERGER, AR .

JOURNAL OF CHEMICAL PHYSICS, 1979, 70 (04) :1994-2002

[3] DIFFUSION OF SPHERES IN A CONCENTRATED SUSPENSION .2. [J].

BEENAKKER, CWJ ;

MAZUR, P .

PHYSICA A, 1984, 126 (03) :349-370

[4]

BRANDRUP J, 1989, POLYM HDB

[5] SURFACE-ROUGHNESS OF WATER MEASURED BY X-RAY REFLECTIVITY [J].

BRASLAU, A ;

DEUTSCH, M ;

PERSHAN, PS ;

WEISS, AH ;

ALSNIELSEN, J ;

BOHR, J .

PHYSICAL REVIEW LETTERS, 1985, 54 (02) :114-117

[6] LIGHT-SCATTERING STUDY OF DYNAMIC AND TIME-AVERAGED CORRELATIONS IN DISPERSIONS OF CHARGED-PARTICLES [J].

BROWN, JC ;

PUSEY, PN ;

GOODWIN, JW ;

OTTEWILL, RH .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1975, 8 (05) :664-682

[7] Ultralow-angle dynamic light scattering with a charge coupled device camera based multispeckle, multitau correlator [J].

Cipelletti, L ;

Weitz, DA .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1999, 70 (08) :3214-3221

[8] Interface and surface effects on the glass transition in thin polystyrene films [J].

DeMaggio, GB ;

Frieze, WE ;

Gidley, DW ;

Zhu, M ;

Hristov, HA ;

Yee, AF .

PHYSICAL REVIEW LETTERS, 1997, 78 (08) :1524-1527

[9] X-RAY PHOTON-CORRELATION SPECTROSCOPY STUDY OF BROWNIAN-MOTION OF GOLD COLLOIDS IN GLYCEROL [J].

DIERKER, SB ;

PINDAK, R ;

FLEMING, RM ;

ROBINSON, IK ;

BERMAN, L .

PHYSICAL REVIEW LETTERS, 1995, 75 (03) :449-452

[10] Effect of free surfaces on the glass transition temperature of thin polymer films [J].

Forrest, JA ;

DalnokiVeress, K ;

Stevens, JR ;

Dutcher, JR .

PHYSICAL REVIEW LETTERS, 1996, 77 (10) :2002-2005

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