Characteristics of Underwater Near-Field Acoustic Radiation Force Acting on a Planar Object

Characteristics of Underwater Near-Field Acoustic Radiation Force Acting on a Planar Object

A phenomenon called near-field acoustic levitation (NFAL) has been reported where planar objects of several kilograms in weight are levitated in the air a few hundred micrometers away from a radiation surface. The authors experimentally studied the feasibility of underwater NFAL and demonstrated tha...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics Vol. 38; no. 11A; p. L1284
Main Authors: Toru Hatanaka, Toru Hatanaka, Yoshikazu Koike, Yoshikazu Koike, Kentaro Nakamura, Kentaro Nakamura, Sadayuki Ueha, Sadayuki Ueha, Yoshiki Hashimoto, Yoshiki Hashimoto
Format: Journal Article
Language:English
Published: 01-11-1999
Online Access:Get full text
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Summary:A phenomenon called near-field acoustic levitation (NFAL) has been reported where planar objects of several kilograms in weight are levitated in the air a few hundred micrometers away from a radiation surface. The authors experimentally studied the feasibility of underwater NFAL and demonstrated that planar objects can also be levitated in liquid. Furthermore, unexpected characteristics such as that attraction, in addition to the repulsive acoustic radiation force, acts on the planar object under certain conditions, were found.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.38.L1284