Improved noncontact optical sensor for detection of glucose concentration and indication of dehydration level

Nisan Ozana, Nadav Arbel, Yevgeny Beiderman, Vicente Mico, Martin Sanz, Javier Garcia, Arun Anand, Baharam Javidi, Yoram Epstein, Zeev Zalevsky

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

The ability to extract different bio-medical parameters from one single wristwatch device can be very applicable. The wearable device that is presented in this paper is based on two optical approaches. The first is the extraction and separation of remote vibration sources and the second is the rotation of linearly polarized light by certain materials exposed to magnetic fields. The technique is based on tracking of temporal changes of reflected secondary speckles produced in the wrist when being illuminated by a laser beam. Change in skin’s temporal vibration profile together with change in the magnetic medium that is generated by time varied glucose concentration caused these temporal changes. In this paper we present experimental tests which are the first step towards an in vivo noncontact device for detection of glucose concentration in blood. The paper also shows very preliminary results for qualitative capability for indication of dehydration.

Original languageEnglish
Pages (from-to)1926-1940
Number of pages15
JournalBiomedical Optics Express
Volume5
Issue number6
DOIs
StatePublished - 22 May 2014

Keywords

  • Electromagnetic optics
  • Medical optics and biotechnology
  • Polarization
  • Remote sensing
  • Speckle

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