Surface Wave Measurements during Gelation Process of Tungstic Acid

Kazuhiro Motonaga, Hirotaka Okabe, Kazuhiro Hara, Kazumi M. Matsushige

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In order to investigate the gelation process of tungstic acid, surface wave measurements at several frequencies (50–200 Hz) were carried out with a deflected-laser-light detection system using surface waves excited with a PZT bimorph vibrator. During the gelation process, marked changes were observed in the surface wave velocity and amplitude. From the relationship between the frequency and wave number of the surface wave in the sol and gel states, it was found that the surface wave in the sol state was mainly the surface tension wave, and that in the gel state, the Rayleigh wave. We also estimated surface tension in the sol state and shear elastic modulus in the gel state from the present experimental results. The results of the present investigations demonstrate the usefulness of the surface wave measurement for studying the gelation process beyond the transition point.

Original languageEnglish
Number of pages1
JournalJapanese Journal of Applied Physics
Volume33
Issue number6R
DOIs
Publication statusPublished - Jan 1 1994
Externally publishedYes

Fingerprint

gelation
Gelation
Surface waves
surface waves
acids
Acids
Sols
Gels
gels
Surface tension
interfacial tension
Vibrators
Rayleigh waves
transition points
modulus of elasticity
Elastic moduli
shear
Lasers
lasers

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Surface Wave Measurements during Gelation Process of Tungstic Acid. / Motonaga, Kazuhiro; Okabe, Hirotaka; Hara, Kazuhiro; Matsushige, Kazumi M.

In: Japanese Journal of Applied Physics, Vol. 33, No. 6R, 01.01.1994.

Research output: Contribution to journalArticle

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