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Applied Physics Letters / Volume 93 / Issue 11 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 93, 111902 (2008); http://dx.doi.org/10.1063/1.2970992 (3 pages)

Evidence of complete band gap and resonances in a plate with periodic stubbed surface

Tsung-Tsong Wu, Zi-Gui Huang, Tzu-Chin Tsai, and Tzung-Chen Wu

Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan

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(Received 28 May 2008; accepted 26 July 2008; published online 16 September 2008)

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.

© 2008 American Institute of Physics

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KEYWORDS and PACS

Keywords

elastic waves, photonic band gap, photonic crystals

PACS

  • 42.70.Qs

    Photonic bandgap materials

  • 62.30.+d

    Mechanical and elastic waves; vibrations

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2970992

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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