Liquid density sensing by using a photothermal vibration

Seiki Inaba, Yoshiki Okuhara, Kazuhiro Hane

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

An optical sensing system for measuring liquid density, which uses the resonance frequency shift of a membrane vibrated by the photothermal effect in liquid, is described. On increasing the liquid density from 0.79 to 1.18 g/cm3, the resonance frequency for the membrane with a cantilever structure decreased monotonically from 1940 to 1700 Hz by sound radiation from the vibrating membrane.

Original languageEnglish
Pages (from-to)163-166
Number of pages4
JournalSensors and Actuators: A. Physical
Volume33
Issue number3
DOIs
Publication statusPublished - 1992 Jun
Externally publishedYes

Keywords

  • photothermal vibration

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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