Propagating properties of surface wave in Sol-Gel transition of tungstic acid

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

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The gelation process of tungstic acid was investigated by observing surface waves at two points on a sample surface. We used a deflected-light detection system, in which the surface waves were excited with a PZT bimorph vibrator. From the propagation time (δt) between the two isolated measuring points, surface wave velocity was calculated. We also estimated attenuation of the surface wave from the ratio of the observed amplitudes at the measuring points. Around the gelation time (tg), which was determined by the tilting test, a marked increase in the surface wave velocity was observed. The attenuation coefficient showed frequency dispersion in the frequency range from 20 to 60 Hz, which reached a maximum value around tg.

Original languageEnglish
Pages (from-to)2905-2907
Number of pages3
JournalJapanese journal of applied physics
Issue number5S
Publication statusPublished - May 1994

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Propagating properties of surface wave in Sol-Gel transition of tungstic acid'. Together they form a unique fingerprint.

Cite this