Full Band Gaps of Sonic Crystals Made of Acrylic Cylinders in Air –Numerical and Experimental Investigations–

DOI Web Site 被引用文献3件
  • Miyashita Toyokatsu
    Department of Electronics and Informatics, Ryukoku University, Yokotani 1-5, Seta Ohe-cho, Ohtsu 520-2194, Japan

書誌事項

タイトル別名
  • Ultrasonic Electronics. Full Band Gaps of Sonic Crystals Made of Acrylic Cylinders in Air. Numerical and Experimental Investigations.
  • ---Numerical and Experimental Investigations---
公開日
2002
DOI
  • 10.1143/jjap.41.3170
公開者
The Japan Society of Applied Physics

この論文をさがす

説明

By introducing a common parameter space for sonic crystals and photonic crystals, we have classified them uniformly. Both are artificial crystals made of a periodic array of scatterers with a lattice constant of approximately a half wavelength. Then, we predicted that sonic crystals composed of solid cylinders in air have full band gaps with a filling ratio larger than 0.44, developing a finite-difference time-domain (FDTD) method numerically to analyze acoustic wave propagation in a finite periodic structure. Next, we constructed in air a two-dimensional array of 10 × 10 acrylic cylinders with a radius of 10.2 mm and a lattice constant of 24.0 mm, and observed a full band gap between 6.8 kHz and 9.5 kHz with a transmission ratio smaller than -25 dB using a tone burst, which agrees well with the numerical predictions. To our knowledge, no other report of clear and direct measurements of the full band gap of sonic crystals made of solid scatterers in air has been published.

収録刊行物

被引用文献 (3)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ