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Skin Hydration Sensor for Customizable Electronic Textiles

Published online by Cambridge University Press:  05 August 2016

Murat A. Yokus  and
Michael A. Daniele
Murat A. Yokus
Affiliation:
Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, U.S.A. Department of Textile Engineering, Chemistry & Science, North Carolina State University, Raleigh, NC 27606, U.S.A.
Michael A. Daniele*
Affiliation:
Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, U.S.A. Joint Department of Biomedical Engineering, North Carolina State University and University of North Carolina, Chapel Hill, 911 Oval Dr., Raleigh, NC 27695, U.S.A.
*
*(Email: mdaniel6@ncsu.edu)

Abstract

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This paper introduces the design and simulated operation of a capacitive hydration sensor for integration into textile-based electronics. The multilayer patch is composed of a textile layer and an attached series of serpentine-interdigitated electrodes. The model used for simulations incorporated this design onto a representative model of skin. The serpentine-interdigitated electrodes are electrodes for capacitive measurement of skin hydration. In this study, the capacitance change relative to skin hydration was simulated using finite element analysis. The simulation results suggest the fabric layer had little effect on the capacitance of the sensor. Furthermore, the frequency domain simulations indicated that the capacitance of the sensor decreased with increasing frequency, and the decrease in capacitance was more significant for the dry skin compared to the wet skin. Therefore, the variation in the capacitance value of the serpentine-interdigitated electrodes can be employed for continuous skin hydration detection.

Keywords

electrical propertiessensortissue
Type
Articles
Information
MRS Advances , Volume 1 , Issue 38: Materials Design , 2016 , pp. 2671 - 2676
Copyright
Copyright © Materials Research Society 2016 

References

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