Abstract
The lens effect of acoustic waves in a two-dimensional (2D) phononic crystal is studied by numerical simulation based on the finite-difference time-domain (FDTD) method. We calculate the phonon band structure of 2D phononic crystals, consisting of metal/ceramic cylinders placed periodically in water. The lens effect is observed for the far-field wave in phononic crystals with two-layered and graded-index structure. We compare the focal intensity and the energy transmission efficiency in these numerical experiments, and show that a novel energy-transmission device can be designed using phononic crystals.
| Original language | English |
|---|---|
| Pages (from-to) | 22-27 |
| Number of pages | 6 |
| Journal | Electronics and Communications in Japan |
| Volume | 97 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2014 |
Keywords
- FDTD simulation
- acoustic lens
- energy transmission
- phononic crystal
ASJC Scopus subject areas
- Signal Processing
- Physics and Astronomy(all)
- Computer Networks and Communications
- Electrical and Electronic Engineering
- Applied Mathematics
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Cite this
Kanno, Y., Tsuruta, K., Fujimori, K., Fukano, H., & Nogi, S. (2014). Phononic-crystal acoustic lens by design for energy-transmission devices. Electronics and Communications in Japan, 97(1), 22-27. https://doi.org/10.1002/ecj.11491