Near-field acoustic levitation of planar specimens using flexural vibration

Yoshiki Hashimoto, Yoshikazu Koike, Sadayuki Ueha

研究成果: Article

89 引用 (Scopus)


In conventional acoustic levitation, the specimens to be levitated are limited to very light crees of u few milligrams to a few tens of milligrams. The authors have learned that specimens with a weight of several kilograms can be levirated stably by direct sound radiation pressure. The specimen material is not important. The requirement is only that the surface of the specimen exposed to the sound wave must be flat. The fundamental characteristics of near-field levitation were experimentally studied with the use of a flexural vibration plate. The following results were obtained: (1) The size of levitation specimen should be longer than 3/2 wavelength of the flexural vibration in order to levitare stably. (2) The relationship between the levitation distance and the mass per unit area is proportion to -1/2 power. (3) The levitation distance is proportional to the displacement amplitude. This phenomenon can be used in noncontact transportation of planar objects such as Si wafer and glass plates.

ジャーナルJournal of the Acoustical Society of America
発行部数4 pt 1
出版物ステータスPublished - 1996 10 1

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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