TY - JOUR
T1 - Meandering collimated beam of surface acoustic waves on a trigonal crystal ball
AU - Yanagisawa, Takayuki
AU - Ohgi, Tsuneo
AU - Akao, Shingo
AU - Nakaso, Noritaka
AU - Tsukahara, Yusuke
AU - Ohara, Yoshikazu
AU - Tsuji, Toshihiro
AU - Yamanaka, Kazushi
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/3/21
Y1 - 2011/3/21
N2 - To fully exploit high-quality piezoelectric crystals in acoustic wave devices, it is necessary to remove limitations not related to the crystal quality. Among them, the "diffraction loss" is most serious. Previously, we have developed the ball surface acoustic wave (SAW) sensor using crystal ball. However, because of the piezoelectric crystal's strong anisotropy, we could not control the propagation route of SAWs on a ball. Here, we report a discovery that the beam propagates along a meander route, identical at every turn. Consequently, we succeeded in completely removing the diffraction loss. Since it can fully exploit the quality of crystals, it will stimulate progress of crystal technology.
AB - To fully exploit high-quality piezoelectric crystals in acoustic wave devices, it is necessary to remove limitations not related to the crystal quality. Among them, the "diffraction loss" is most serious. Previously, we have developed the ball surface acoustic wave (SAW) sensor using crystal ball. However, because of the piezoelectric crystal's strong anisotropy, we could not control the propagation route of SAWs on a ball. Here, we report a discovery that the beam propagates along a meander route, identical at every turn. Consequently, we succeeded in completely removing the diffraction loss. Since it can fully exploit the quality of crystals, it will stimulate progress of crystal technology.
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U2 - 10.1063/1.3567517
DO - 10.1063/1.3567517
M3 - Article
AN - SCOPUS:79953843364
VL - 98
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 12
M1 - 123508
ER -