The observation of the longitudinal wave velocity in a model supercooled liquid

T. Muranaka, Jun Matsui, Y. Hiwatari

Research output: Contribution to journalArticle

Abstract

We have improved the non-equilibrium molecular dynamics measurement for the longitudinal wave (LW) velocity (the speed of sound) and have applied it to a model system in 2D and 3D. The LW velocity at temperature of the glass or supercooled liquid state reaches the range of in the 2D system and in the 3D system, with a gradual increase with increasing temperature under the isochoric and adiabatic conditions. In our previous paper [4] we analysed that the cooperative motion in intermediate time and length scales propagates with a speed depending on temperature and found that its dependency is opposed to that of the LWs. It suggests that the cooperative motion spreads over the system in a different way of sound.

Original languageEnglish
Pages (from-to)822-826
Number of pages5
JournalMolecular Simulation
Volume41
Issue number10-12
DOIs
Publication statusPublished - Jan 1 2015

Fingerprint

Supercooled Liquid
longitudinal waves
Liquids
liquids
Non-equilibrium Molecular Dynamics
2-D Systems
Motion
Acoustic wave velocity
adiabatic conditions
Length Scale
Temperature
acoustics
Molecular dynamics
Time Scales
Acoustic waves
Model
temperature
Glass
molecular dynamics
Range of data

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Modelling and Simulation
  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Information Systems

Cite this

The observation of the longitudinal wave velocity in a model supercooled liquid. / Muranaka, T.; Matsui, Jun; Hiwatari, Y.

In: Molecular Simulation, Vol. 41, No. 10-12, 01.01.2015, p. 822-826.

Research output: Contribution to journalArticle

Muranaka, T. ; Matsui, Jun ; Hiwatari, Y. / The observation of the longitudinal wave velocity in a model supercooled liquid. In: Molecular Simulation. 2015 ; Vol. 41, No. 10-12. pp. 822-826.
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