Noncontact speckle-based optical sensor for detection of glucose concentration using magneto-optic effect

Nisan Ozana; Yevgeny Beiderman; Arun Anand; Bahram Javidi; Sagi Polani; Ariel Schwarz; Amir Shemer; Javier García-Monreal; Zeev Zalevsky

doi:10.1117/1.JBO.21.6.065001

2 June 2016 Noncontact speckle-based optical sensor for detection of glucose concentration using magneto-optic effect

Nisan Ozana, Yevgeny Beiderman, Arun Anand, Bahram Javidi, Sagi Polani, Ariel Schwarz, Amir Shemer, Javier García-Monreal, Zeev Zalevsky

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Journal of Biomedical Optics, Vol. 21, Issue 6, 065001 (June 2016). https://doi.org/10.1117/1.JBO.21.6.065001

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 in vitro 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.

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Nisan Ozana, Yevgeny Beiderman, Arun Anand, Bahram Javidi, Sagi Polani, Ariel Schwarz, Amir Shemer, Javier García-Monreal, and Zeev Zalevsky "Noncontact speckle-based optical sensor for detection of glucose concentration using magneto-optic effect," Journal of Biomedical Optics 21(6), 065001 (2 June 2016). https://doi.org/10.1117/1.JBO.21.6.065001

Published: 2 June 2016

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