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Journal of Biomedical Optics • new

Noncontact speckle-based optical sensor for detection of glucose concentration using magneto-optic effect
Author(s): Nisan Ozana; Yevgeny Beiderman; Arun Anand; Bahram Javidi; Sagi Polani; Ariel Schwarz; Amir Shemer; Javier García-Monreal; Zeev Zalevsky
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Paper Abstract

We experimentally verify a speckle-based technique for noncontact measurement of glucose concentration in the bloodstream. The final device is intended to be a single wristwatch-style device containing a laser, a camera, and an alternating current (ac) electromagnet generated by a solenoid. The experiments presented are performed <italic<in vitro</italic< as proof of the concept. When a glucose substance is inserted into a solenoid generating an ac magnetic field, it exhibits Faraday rotation, which affects the temporal changes of the secondary speckle pattern distributions. The temporal frequency resulting from the ac magnetic field was found to have a lock-in amplification role, which increased the observability of the relatively small magneto-optic effect. Experimental results to support the proposed concept are presented.

Paper Details

Date Published: 2 June 2016
PDF: 6 pages
J. Biomed. Opt. 21(6) 065001 doi: 10.1117/1.JBO.21.6.065001
Published in: Journal of Biomedical Optics Volume 21, Issue 6
Show Author Affiliations
Nisan Ozana, Bar-Ilan Univ. (Israel)
Yevgeny Beiderman, Bar-Ilan Univ. (Israel)
Arun Anand, The Maharaja Sayajirao Univ. of Baroda (India)
Bahram Javidi, Univ. of Connecticut (United States)
Sagi Polani, ContinUse Biometrics Ltd. (Israel)
Ariel Schwarz, ContinUse Biometrics Ltd. (Israel)
Amir Shemer, Bar-Ilan Univ. (Israel)
Javier García-Monreal, Univ. de València (Spain)
Zeev Zalevsky, Bar-Ilan Univ. (Israel)


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