Phononic-crystal acoustic lens by design for energy-transmission devices

Yusuke Kanno; Kenji Tsuruta; Kazuhiro Fujimori; Hideki Fukano; Shigeji Nogi

doi:10.1541/ieejeiss.132.686

Phononic-crystal acoustic lens by design for energy-transmission devices

Yusuke Kanno, Kenji Tsuruta, Kazuhiro Fujimori, Hideki Fukano, Shigeji Nogi

Research output: Contribution to journal › Article

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
Pages (from-to)	686-690
Number of pages	5
Journal	IEEJ Transactions on Electronics, Information and Systems
Volume	132
Issue number	5
DOIs	https://doi.org/10.1541/ieejeiss.132.686
Publication status	Published - 2012

Keywords

Acoustic lens
Energy transmission
FDTD simulation
Phononic crystal

ASJC Scopus subject areas

Electrical and Electronic Engineering

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Kanno, Y., Tsuruta, K., Fujimori, K., Fukano, H., & Nogi, S. (2012). Phononic-crystal acoustic lens by design for energy-transmission devices. IEEJ Transactions on Electronics, Information and Systems, 132(5), 686-690. https://doi.org/10.1541/ieejeiss.132.686

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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.",

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AU - Nogi, Shigeji

PY - 2012

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AB - 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.

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KW - Energy transmission

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