A biomimetic projector with high subwavelength directivity based on dolphin biosonar

Yu Zhang, Xiaowei Gao, Sai Zhang, Wenwu Cao, Liguo Tang, Ding Wang, Yan Li

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Based on computed tomography of a Yangtze finless porpoise's biosonar system, a biomimetic structure was designed to include air cavity, gradient-index material, and steel outer-structure mimicking air sacs, melon, and skull, respectively. The mainlobe pressure was about three times higher, the angular resolution was one order of magnitude higher, and the effective source size was orders of magnitude larger than those of the subwavelength source without the biomimetic structure. The superior subwavelength directivity over a broad bandwidth suggests potential applications of this biomimetic projector in underwater sonar, medical ultrasonography, and other related applications.

Original languageEnglish (US)
Article number123502
JournalApplied Physics Letters
Volume105
Issue number12
DOIs
StatePublished - Sep 22 2014

Fingerprint

dolphins
biomimetics
directivity
projectors
porpoises
skull
sonar
air
angular resolution
tomography
steels
bandwidth
gradients
cavities

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Zhang, Yu ; Gao, Xiaowei ; Zhang, Sai ; Cao, Wenwu ; Tang, Liguo ; Wang, Ding ; Li, Yan. / A biomimetic projector with high subwavelength directivity based on dolphin biosonar. In: Applied Physics Letters. 2014 ; Vol. 105, No. 12.
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A biomimetic projector with high subwavelength directivity based on dolphin biosonar. / Zhang, Yu; Gao, Xiaowei; Zhang, Sai; Cao, Wenwu; Tang, Liguo; Wang, Ding; Li, Yan.

In: Applied Physics Letters, Vol. 105, No. 12, 123502, 22.09.2014.

Research output: Contribution to journalArticle

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