Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 11, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2970992
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Funding
- National Science Council of Taiwan [NSC 96-2221-E-002-206-MY3]
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In this paper, we numerically and experimentally demonstrate the existence of complete band gaps and resonances in a plate with a periodic stubbed surface. Numerical results show that a complete band gap forms as the stub height reaches about three times the plate thickness. In the experiment, we used a pulsed laser to generate broadband elastic waves and used optical devices as well as point piezoelectric transducers to detect wave signals. The results show that the numerical predictions are in very good agreement with those measured experimentally. Remarkable resonances on the top surface of the stubs are found and discussed. (C) 2008 American Institute of Physics.
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