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Title: Acoustic beam control in biomimetic projector via velocity gradient

Abstract

A biomimetic projector (BioP) based on computerized tomography of pygmy sperm whale's biosonar system has been designed using gradient-index (GRIN) material. The directivity of this BioP device was investigated as function of frequency and the velocity gradient of the GRIN material. A strong beam control over a broad bandwidth at the subwavelength scale has been achieved. Compared with a bare subwavelength source, the main lobe pressure of the BioP is about five times as high and the angular resolution is one order of magnitude better. Our results indicate that this BioP has excellent application potential in miniaturized underwater sonars.

Authors:
; ;  [1]; ;  [1];  [2];  [3];  [4];  [5]
  1. Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Ministry of Education, Xiamen University, Xiamen 361005 (China)
  2. (China)
  3. Department of Mathematics and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
  4. Sanya Key Laboratory of Marin Mammal and Marine Bioacoustics, Sanya Institute of Deep-Sea Science and Engineering, Chinese Academy of Science, Sanya 57200 (China)
  5. Faculty of Science, Jiangsu University, Zhenjiang 212013 (China)
Publication Date:
OSTI Identifier:
22590584
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 1; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BEAMS; CETACEANS; COMPUTERIZED TOMOGRAPHY; CONTROL; DESIGN; EQUIPMENT; FREQUENCY DEPENDENCE; RESOLUTION; SONAR; SPERMATOZOA; UNDERWATER; VELOCITY

Citation Formats

Gao, Xiaowei, Dong, Erqian, Song, Zhongchang, Zhang, Yu, E-mail: yuzhang@xmu.edu.cn, E-mail: dzk@psu.edu, Tang, Liguo, State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, Cao, Wenwu, E-mail: yuzhang@xmu.edu.cn, E-mail: dzk@psu.edu, Li, Songhai, and Zhang, Sai. Acoustic beam control in biomimetic projector via velocity gradient. United States: N. p., 2016. Web. doi:10.1063/1.4955179.
Gao, Xiaowei, Dong, Erqian, Song, Zhongchang, Zhang, Yu, E-mail: yuzhang@xmu.edu.cn, E-mail: dzk@psu.edu, Tang, Liguo, State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, Cao, Wenwu, E-mail: yuzhang@xmu.edu.cn, E-mail: dzk@psu.edu, Li, Songhai, & Zhang, Sai. Acoustic beam control in biomimetic projector via velocity gradient. United States. doi:10.1063/1.4955179.
Gao, Xiaowei, Dong, Erqian, Song, Zhongchang, Zhang, Yu, E-mail: yuzhang@xmu.edu.cn, E-mail: dzk@psu.edu, Tang, Liguo, State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, Cao, Wenwu, E-mail: yuzhang@xmu.edu.cn, E-mail: dzk@psu.edu, Li, Songhai, and Zhang, Sai. 2016. "Acoustic beam control in biomimetic projector via velocity gradient". United States. doi:10.1063/1.4955179.
@article{osti_22590584,
title = {Acoustic beam control in biomimetic projector via velocity gradient},
author = {Gao, Xiaowei and Dong, Erqian and Song, Zhongchang and Zhang, Yu, E-mail: yuzhang@xmu.edu.cn, E-mail: dzk@psu.edu and Tang, Liguo and State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005 and Cao, Wenwu, E-mail: yuzhang@xmu.edu.cn, E-mail: dzk@psu.edu and Li, Songhai and Zhang, Sai},
abstractNote = {A biomimetic projector (BioP) based on computerized tomography of pygmy sperm whale's biosonar system has been designed using gradient-index (GRIN) material. The directivity of this BioP device was investigated as function of frequency and the velocity gradient of the GRIN material. A strong beam control over a broad bandwidth at the subwavelength scale has been achieved. Compared with a bare subwavelength source, the main lobe pressure of the BioP is about five times as high and the angular resolution is one order of magnitude better. Our results indicate that this BioP has excellent application potential in miniaturized underwater sonars.},
doi = {10.1063/1.4955179},
journal = {Applied Physics Letters},
number = 1,
volume = 109,
place = {United States},
year = 2016,
month = 7
}