Characterization of objects by electrosensing fish based on the first order polarization tensor

Ahmad Khairuddin, Taufiq K and Lionheart, William R B (2016) Characterization of objects by electrosensing fish based on the first order polarization tensor. Bioinspiration & Biomimetics. (In Press)

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Abstract

Weakly electric fish generate electric current and use hundreds of voltage sensors on the surface of their body to navigate and locate food. Experiments [G. von der Emde and S. Fetz, J. Exp Biol, 210, 3082�3095, 2007] show that they can discriminate between differently shaped conducting or insulating objects by using electrosensing. One approach to electrically identify and characterize the object with a lower computational cost rather than full shape reconstruction is to use the first order Polarization Tensor (PT) of the object. In this paper, by considering experimental work on Peters� elephantnose fish Gnathonemus petersii, we investigate the possible role of the first order PT in the ability of the fish to discriminate between objects of different shape. We also suggest some experiments that might be performed to further investigate the role of the first order PT in electrosensing fish. Finally, we speculate on the possibility of electrical cloaking or camouflage in prey of electrosensing fish and what might be learnt from the fish in human remote sensing.

Item Type: Article
Uncontrolled Keywords: Electrosensing, Gnathonemus petersii, weakly electric fish, polarization tensor, Polya-Szeg o tensor, electrical impedance tomography
Subjects: PACS 2010, the AIP's Physics and Astronomy Classification Scheme > 40 ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID MECHANICS > 41 Electromagnetism; electron and ion optics
PACS 2010, the AIP's Physics and Astronomy Classification Scheme > 80 INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY > 87 Biological and medical physics
Depositing User: Prof WRB Lionheart
Date Deposited: 26 Jul 2016
Last Modified: 20 Oct 2017 14:13
URI: http://eprints.maths.manchester.ac.uk/id/eprint/2488

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