Journal
FLEXIBLE AND PRINTED ELECTRONICS
Volume 6, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2058-8585/ac1244
Keywords
printed electronics; capacitive sensor; epidermal moisture measurement; screen-printing; comb-shaped electrode
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This study focuses on capacitive epidermal moisture measurements using disposable electrode films fabricated by screen-printing method. The optimization of electrode layer design leads to higher gain and accuracy of measurements, simplifying device operation and ensuring hygienic performance.
This paper addresses the characteristics of capacitive-type epidermal moisture measurements using disposable electrode films fabricated by a screen-printing method. The disposable electrode films were composed of substrates, comb-shaped electrode layers, and insulating layers. The epidermal moisture measurement obtained higher gain by optimization of the finger width of the comb-shaped electrode layer. The gain and accuracy of measurements were also improved by changing the insulating layer that covered the comb-shaped electrode layer to the striped-pattern type instead of the conventional solid-filling type. This epidermal moisture measuring instrument reduces the cleaning process of the electrode film that directly contacts the skin, simplifies the handling of the devices, and ensures hygienic operation.
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