Volume 54, Number 2, April 2001
|Page(s)||199 - 205|
|Section||Condensed matter: structural, mechanical and thermal properties|
|Published online||01 December 2003|
Thickness dependence of surface modes on a gel
Department of Physics, Korea Advanced Institute of Science and Technology
373-1 Kusong-dong, Yusong-gu, Taejon, 305-701, South Korea
Accepted: 13 February 2001
A surface wave mode on a gel has been studied as a function of thickness by using electrically excited surface wave spectroscopy (EESWS), which measures the response of excited surface waves by applying an electric field at the surface. In the frequency region where the elastic and surface tension forces dominate, multiple harmonics of a surface mode are predicted theoretically for a finite-thickness case due to a coupling with the normal direction wave to the surface. This paper shows the first experimental measurement of the multiple harmonics of a surface mode. We have compared the experimental data with the theoretical calculation.
PACS: 62.30.+d – Mechanical and elastic waves; vibrations / 68.03.-g – Gas-liquid and vacuum-liquid interfaces / 82.70.Gg – Gels and sols
© EDP Sciences, 2001
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