Thermal interface fluctuations of liquids and viscoelastic materials

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Spectra of thermal fluctuations of a wide range of interfaces, from liquid/air, viscoelastic material/ air, liquid/liquid to liquid/viscoelastic material interfaces, were measured over a 100 Hz to 10MHz frequency range. The obtained spectra were compared with the fluctuation theory of interfaces, and found to be mostly in quite good agreement, when the theory was generalized to apply to thermal fluctuations of liquid/viscoelastic material interfaces. The loss modulus of viscoelastic materials has been incorporated into the theory, and its effects observed experimentally. The spectra were measured using a system that combines light reflection, statistical noise reduction through averaged correlations, and confocal microscopy. It requires only a small area of the interface (∼1μm2), relatively short times for measurements (≲ few min), and can also be applied to highly viscous materials.

Original languageEnglish
Article number043J01
JournalProgress of Theoretical and Experimental Physics
Volume2018
Issue number4
DOIs
Publication statusPublished - 2018 Apr 1

Fingerprint

liquids
liquid air
fluctuation theory
noise reduction
frequency ranges
microscopy

Keywords

  • J42
  • J45

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Thermal interface fluctuations of liquids and viscoelastic materials. / Aoki, Kenichiro; Mitsui, Takahisa.

In: Progress of Theoretical and Experimental Physics, Vol. 2018, No. 4, 043J01, 01.04.2018.

Research output: Contribution to journalArticle

@article{8aee8f049d0a40cd8aa3b8669ce303bf,
title = "Thermal interface fluctuations of liquids and viscoelastic materials",
abstract = "Spectra of thermal fluctuations of a wide range of interfaces, from liquid/air, viscoelastic material/ air, liquid/liquid to liquid/viscoelastic material interfaces, were measured over a 100 Hz to 10MHz frequency range. The obtained spectra were compared with the fluctuation theory of interfaces, and found to be mostly in quite good agreement, when the theory was generalized to apply to thermal fluctuations of liquid/viscoelastic material interfaces. The loss modulus of viscoelastic materials has been incorporated into the theory, and its effects observed experimentally. The spectra were measured using a system that combines light reflection, statistical noise reduction through averaged correlations, and confocal microscopy. It requires only a small area of the interface (∼1μm2), relatively short times for measurements (≲ few min), and can also be applied to highly viscous materials.",
keywords = "J42, J45",
author = "Kenichiro Aoki and Takahisa Mitsui",
year = "2018",
month = "4",
day = "1",
doi = "10.1093/ptep/pty026",
language = "English",
volume = "2018",
journal = "Progress of Theoretical and Experimental Physics",
issn = "2050-3911",
publisher = "Oxford University Press",
number = "4",

}

TY - JOUR

T1 - Thermal interface fluctuations of liquids and viscoelastic materials

AU - Aoki, Kenichiro

AU - Mitsui, Takahisa

PY - 2018/4/1

Y1 - 2018/4/1

N2 - Spectra of thermal fluctuations of a wide range of interfaces, from liquid/air, viscoelastic material/ air, liquid/liquid to liquid/viscoelastic material interfaces, were measured over a 100 Hz to 10MHz frequency range. The obtained spectra were compared with the fluctuation theory of interfaces, and found to be mostly in quite good agreement, when the theory was generalized to apply to thermal fluctuations of liquid/viscoelastic material interfaces. The loss modulus of viscoelastic materials has been incorporated into the theory, and its effects observed experimentally. The spectra were measured using a system that combines light reflection, statistical noise reduction through averaged correlations, and confocal microscopy. It requires only a small area of the interface (∼1μm2), relatively short times for measurements (≲ few min), and can also be applied to highly viscous materials.

AB - Spectra of thermal fluctuations of a wide range of interfaces, from liquid/air, viscoelastic material/ air, liquid/liquid to liquid/viscoelastic material interfaces, were measured over a 100 Hz to 10MHz frequency range. The obtained spectra were compared with the fluctuation theory of interfaces, and found to be mostly in quite good agreement, when the theory was generalized to apply to thermal fluctuations of liquid/viscoelastic material interfaces. The loss modulus of viscoelastic materials has been incorporated into the theory, and its effects observed experimentally. The spectra were measured using a system that combines light reflection, statistical noise reduction through averaged correlations, and confocal microscopy. It requires only a small area of the interface (∼1μm2), relatively short times for measurements (≲ few min), and can also be applied to highly viscous materials.

KW - J42

KW - J45

UR - http://www.scopus.com/inward/record.url?scp=85045510355&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85045510355&partnerID=8YFLogxK

U2 - 10.1093/ptep/pty026

DO - 10.1093/ptep/pty026

M3 - Article

AN - SCOPUS:85045510355

VL - 2018

JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

SN - 2050-3911

IS - 4

M1 - 043J01

ER -