title: Improved noncontact optical sensor for detection of glucose concentration and indication of dehydration level.
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.
authors.affiliation: Faculty of Engineering, Bar-Ilan University, Ramat-Gan 52900, Israel.
authors.forename: Nisan
authors.initials: N
authors.lastname: Ozana
authors.affiliation: Faculty of Engineering, Bar-Ilan University, Ramat-Gan 52900, Israel.
authors.forename: Nadav
authors.initials: N
authors.lastname: Arbel
authors.affiliation: Faculty of Engineering, Bar-Ilan University, Ramat-Gan 52900, Israel.
authors.forename: Yevgeny
authors.initials: Y
authors.lastname: Beiderman
authors.affiliation: Departamento de Óptica, Universitat de València, c/Dr. Moliner, 50, 46100 Burjassot, Spain.
authors.forename: Vicente
authors.initials: V
authors.lastname: Mico
authors.affiliation: Departamento de Óptica, Universitat de València, c/Dr. Moliner, 50, 46100 Burjassot, Spain.
authors.forename: Martin
authors.initials: M
authors.lastname: Sanz
authors.affiliation: Departamento de Óptica, Universitat de València, c/Dr. Moliner, 50, 46100 Burjassot, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Garcia
authors.affiliation: Optics Laboratory, Applied Physics Department, Faculty of Technology & Engineering, MS University of Baroda, Vadodara 390001, India.
authors.forename: Arun
authors.initials: A
authors.lastname: Anand
authors.affiliation: Department of Electrical and Computer Engineering, U-4157, University of Connecticut, Storrs, CT 06269-4157, USA.
authors.forename: Baharam
authors.initials: B
authors.lastname: Javidi
authors.affiliation: Heller Institute of Medical Research, Sheba Medical Center, Tel Hashomer, Sackler Faculty of Medicine, Tel Aviv University, Israel.
authors.forename: Yoram
authors.initials: Y
authors.lastname: Epstein
authors.affiliation: Faculty of Engineering, Bar-Ilan University, Ramat-Gan 52900, Israel.
authors.forename: Zeev
authors.initials: Z
authors.lastname: Zalevsky
keywords: (030.6140) Speckle; (170.0170) Medical optics and biotechnology; (260.2110) Electromagnetic optics; (260.5430) Polarization; (280.0280) Remote sensing and sensors