Light scattering measurement of shear viscosity in a fragile glass-forming liquid, metatoluidine

被引:34
作者
Dreyfus, C
Aouadi, A
Pick, RM
Berger, T
Patkowski, A
Steffen, W
机构
[1] Univ Paris 06, LMDH, F-75005 Paris, France
[2] Max Planck Inst Polymerforsch, D-55021 Mainz, Germany
[3] Adam Mickiewicz Univ, Inst Phys, Poznan, Poland
来源
EUROPHYSICS LETTERS | 1998年 / 42卷 / 01期
关键词
D O I
10.1209/epl/i1998-00551-4
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have measured and analyzed, through a new theoretical approach, the appearance with decreasing temperature of transverse acoustic waves in the supercooled liquid, metatoluidine. Our approach allows us to determine, at each temperature, solely from the light scattering spectra, the dynamical shear viscosity, eta(s)(T,omega), from which its zero-frequency limit, eta(s)(T, 0), can be deduced. The limit agrees with the static shear viscosity, measured directly in static experiments, between 0.07 Pa s and 2 Pa s, but the tpd values start to deviate above 2 Pa s.
引用
收藏
页码:55 / 60
页数:6
相关论文
共 23 条
[1]   CORRECTION [J].
ANDERSEN, HC .
JOURNAL OF CHEMICAL PHYSICS, 1971, 55 (03) :1496-&
[2]   KINETIC EQUATIONS FOR ORIENTATIONAL AND SHEAR RELAXATION AND DEPOLARIZED LIGHT SCATTERING IN LIQUIDS [J].
ANDERSEN, HC ;
PECORA, R .
JOURNAL OF CHEMICAL PHYSICS, 1971, 54 (06) :2584-&
[3]  
AOUADI A, UNPUB
[4]   LOW-FREQUENCY LIGHT-SCATTERING FROM LIQUID AND SUPERCOOLED ETHYL BENZOATE [J].
BEZOT, P ;
SEARBY, GM ;
SIXOU, P .
JOURNAL OF CHEMICAL PHYSICS, 1975, 62 (09) :3813-3818
[5]   THEORY OF DEPOLARIZED LIGHT-SCATTERING [J].
CHAPPELL, PJ ;
ALLEN, MP ;
HALLEM, RI ;
KIVELSON, D .
JOURNAL OF CHEMICAL PHYSICS, 1981, 74 (11) :5929-5941
[6]   A COMPREHENSIVE LIGHT-SCATTERING STUDY OF A LIQUID COMPOSED OF SYMMETRIC TOP MOLECULES [J].
CHAPPELL, PJ ;
KIVELSON, D .
JOURNAL OF CHEMICAL PHYSICS, 1982, 76 (04) :1742-1753
[7]   BRILLOUIN-SCATTERING IN SALOL - DETERMINING T(C) OF THE MODE-COUPLING THEORY [J].
DREYFUS, C ;
LEBON, MJ ;
CUMMINS, HZ ;
TOULOUSE, J ;
BONELLO, B ;
PICK, RM .
PHYSICAL REVIEW LETTERS, 1992, 69 (25) :3666-3669
[8]  
DREYFUS C, 1996, PHYS REV LETT, V76, P5105
[9]   LIGHT-SCATTERING FROM SHEAR MODES IN LIQUID SALOL [J].
ENRIGHT, GD ;
STOICHEFF, BP .
JOURNAL OF CHEMICAL PHYSICS, 1976, 64 (09) :3658-3665
[10]  
Keyes T., 1971, Journal of Chemical Physics, V54, P1786, DOI 10.1063/1.1675086