Abstract
Lens effect of acoustic wave in 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. Lens effect is observed for far-field wave in the 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 |
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Pages (from-to) | 686-690 |
Number of pages | 5 |
Journal | IEEJ Transactions on Electronics, Information and Systems |
Volume | 132 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2012 |
Keywords
- Acoustic lens
- Energy transmission
- FDTD simulation
- Phononic crystal
ASJC Scopus subject areas
- Electrical and Electronic Engineering