Open AccessImproved noncontact optical sensor for detection of glucose concentration and indication of dehydration level
Author(s) -
Nisan Ozana,
Nadav Arbel,
Yevgeny Beiderman,
Vicente Micó,
Mireia Ferri Sanz,
Javier Garcı́a,
Arun Anand,
Baharam Javidi,
Yoram Epstein,
Zeev Zalevsky
Publication year - 2014
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.5.001926
Subject(s) - speckle pattern , materials science , dehydration , optics , tracking (education) , biomedical engineering , laser , computer science , optoelectronics , chemistry , physics , medicine , psychology , pedagogy , biochemistry
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.