Depolarized light scattering spectra of molecular liquids: Described in terms of mode coupling theory

2014 ◽  
Vol 141 (4) ◽  
pp. 044511 ◽  
Author(s):  
B. Schmidtke ◽  
E. A. Rössler
Keyword(s):  
Light Scattering ◽  
Mode Coupling ◽  
Coupling Theory ◽  
Mode Coupling Theory ◽  
Molecular Liquids ◽  
Scattering Spectra ◽  
Depolarized Light Scattering

Viscoelastic properties of liquid pentachlorobiphenyl under pressure using depolarized light scattering

1983 ◽  
Vol 61 (9) ◽  
pp. 1291-1296 ◽  
Author(s):  
P. Bezot ◽  
C. Hesse-Bezot ◽  
Ph. Pruzan
Keyword(s):  
High Pressure ◽  
Light Scattering ◽  
Shear Modulus ◽  
Viscoelastic Properties ◽  
Pressure Range ◽  
Glassy State ◽  
Molecular Liquids ◽  
Large Pressure ◽  
Scattering Spectra ◽  
Depolarized Light Scattering

A study of the depolarized light scattering spectra of high pressure supercooled pentachlorobiphenyl is presented. From the analysis of the propagative shear doublet, the infinite shear modulus Gx is measured over a large pressure range, at various temperatures, up to a pressure where the liquid is in a glassy state. Gx(P) is found to vary linearly at each temperature. From values of Gx (P = 0.1 MPa) together with those obtained in a previous paper at P = 0.1 MPa as a function of T, it is concluded that Gx(T) is linear over 70 °C, contrary to what is generally obtained in most of the supercooled molecular liquids.

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