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Updated: Aug 21, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Unconventional density dependence of the stochastic dynamics in an organic liquid
A Maira-Vidal1, M A González, M Jimenez-Ruiz
1Instituto de Estructura de la Materia, C.S.I.C., Serrano 123, E-28006 Madrid, Spain.
Abstract:
The density dependence of the diffusive rotational and center-of-mass dynamics of 2-methyl-pyridine is investigated by means of the concurrent use of quasielastic neutron scattering and molecular dynamics simulations. The dependence of both translation and rotational diffusion coefficients shows a distinctive change of slope with increasing density taking place about rho=0.975 g/cm3. Such a change in the dynamics can be related to observations made in other liquids composed of oblate-spheroidal particles.
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