期刊
APPLIED PHYSICS LETTERS
卷 97, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3464955
关键词
elastic waves; energy gap; laser beam applications; membranes; phononic crystals; plates (structures); vibrational modes
资金
- National Science Council, Taiwan [NSC 96-2221-E-002-206-MY3]
We propose a distinct phononic-crystal plate structure that comprises periodic circular membranes and present the theoretical and experimental investigation of elastic-wave propagation in the structure. Owing to the weak rigidity of the membranes, there are slow propagating resonant modes appended to the band structure. These resonant modes can also be engineered to locate inside the complete band gap. The frequencies and group velocities can be tuned by changing the membrane thickness and radius. By utilizing the laser-ultrasonic technique, the resonance and slow group velocity are observed. The measured results are in good agreement with the theoretical predictions. (C) 2010 American Institute of Physics. [doi:10.1063/1.3464955]
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据