Translation-Rotation Coupling in Transient Grating Experiments : Theoretical and Experimental Evidences
Disordered Systems and Neural Networks
2009-11-07 v2 Soft Condensed Matter
Abstract
The results of a Transient Grating experiment in a supercooled molecular liquid of anisotropic molecules and its theoretical interpretation are presented. These results show the existence of two distinct dynamical contributions in the response function of this experiment, density and orientation dynamics. These dynamics can be experimentally disentangled by varying the polarisation of the probe and diffracted beams and they have been identified and measured in a Heterodyne Detected experiment performed on m-toluidine. The results of the theory show a good qualitative agreement with the measurements at all temperatures.
Cite
@article{arxiv.cond-mat/0106632,
title = {Translation-Rotation Coupling in Transient Grating Experiments : Theoretical and Experimental Evidences},
author = {A. Taschin and R. Torre and M. Ricci and M. Sampoli and C. Dreyfus and R. M. Pick},
journal= {arXiv preprint arXiv:cond-mat/0106632},
year = {2009}
}
Comments
PDF format, 14 pages including 4 figures, accepted for publication in EPL. minor modifications