Epidermal electronics: Skin sweat patch

An ultrathin, stretchable, and conformal sensor system for skin-mounted sweat measurement is characterized and demonstrated in this paper. As an epidermal device, the sweat sensor is mechanically designed for comfortable wear on the skin by employing interdigitated electrodes connected via stretchab...

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Bibliographic Details
Main Authors: Yung-Yu Hsu, Hoffman, J., Ghaffari, R., Ives, B., Pinghung Wei, Klinker, L., Morey, B., Elolampi, B., Davis, D., Rafferty, C., Dowling, K.
Format: Conference Proceeding
Language:English
Subjects:
Capacitance
Electrodes
Epidermis
Impedance
Impedance measurement
Online Access:Request full text
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Summary:An ultrathin, stretchable, and conformal sensor system for skin-mounted sweat measurement is characterized and demonstrated in this paper. As an epidermal device, the sweat sensor is mechanically designed for comfortable wear on the skin by employing interdigitated electrodes connected via stretchable serpentine-shaped conductors. Experimental results show that the sensor is sensitive to measuring frequency, sweat level and stretching deformation. It was found that 20kHz signals provide the most sensitive performance: electrical impedance changes 50% while sweat level increases from 20 to 80. In addition, sensor elongation from 15 up to 50% affected the measurement sensitivity of both electrical impedance and capacitance.
ISSN:2150-5934
2150-5942
DOI:10.1109/IMPACT.2012.6420313