期刊
APPLIED PHYSICS LETTERS
卷 106, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4913532
关键词
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资金
- l'Agence Nationale de la Recherche [ANR-09-NANO-004, P3N2009]
- French RENATECH network through FEMTO-ST technological facility
We report on the direct observation of trapping and guiding of surface-guided elastic waves in a linear defect introduced into a micron-scale phononic crystal. Elastic field amplitude detection using laser scanning interferometry was used to characterize the different transmission regimes of the one-period wide line defect in a phononic crystal structure as a function of frequency and to discriminate phononic waveguiding from transmission outside the band gap. Surface density-of-states computations support the experimental observations. (C) 2015 AIP Publishing LLC.
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