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Proceedings Paper

Microscale implementation of a bio-inspired acoustic localization device
Author(s): Luke J. Currano; Haijun Liu; Danny Gee; Benjamin Yang; Miao Yu
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Paper Abstract

We present a microscale implementation of an acoustic localization device inspired by the auditory organ of the parasitic fly Ormia Ochracea. The device consists of a pair of circular membranes coupled together with a beam. The coupling serves to amplify the difference in magnitude and phase between the response of the two membranes as the incident angle of the sound changes, allowing directional information to be deduced from the coupled device response. The device was fabricated using MEMS technology and tested with laser Doppler vibrometery. Amplification factors of up to 7 times were observed in the phase difference between the membranes at 90 degree incident sound angles, with directional sensitivity of up to 0.3μs/degree.

Paper Details

Date Published: 4 May 2009
PDF: 8 pages
Proc. SPIE 7321, Bio-Inspired/Biomimetic Sensor Technologies and Applications, 73210B (4 May 2009); doi: 10.1117/12.821675
Show Author Affiliations
Luke J. Currano, Army Research Lab. (United States)
Haijun Liu, Univ. of Maryland, College Park (United States)
Danny Gee, Army Research Lab. (United States)
Univ. of Maryland, College Park (United States)
Benjamin Yang, Univ. of Maryland, College Park (United States)
Miao Yu, Univ. of Maryland, College Park (United States)

Published in SPIE Proceedings Vol. 7321:
Bio-Inspired/Biomimetic Sensor Technologies and Applications
Nicholas F. Fell; Venkataraman S. Swaminathan, Editor(s)

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