Measurements of the phase transition and the average length of the density fluctuation under supercritical fluid using micromechanical resonators

Masaya Toda, Takashi Fujii, Atsushi Yoshida, Toshiyuki Hashida, Takahito Ono

研究成果: Article査読

2 被引用数 (Scopus)

抄録

This paper presents an original method to measure the phase transition and macroscopic density fluctuation of supercritical carbon dioxide using a resonant microcantilever beam. There is a significant reduction of the resonant frequency near the phase transition point where the density and viscosity of carbon dioxide exhibit large variations, while the vibration amplitude of the micromechanical resonator displayed a large shift up due to generation of microscopic density fluctuation. The average length of the density fluctuation of supercritical fluid could be calculated from this large shift of the vibration amplitude and the value is in the range of millimeter.

本文言語English
論文番号074101
ジャーナルApplied Physics Letters
99
7
DOI
出版ステータスPublished - 2011 8 15

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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