Notice of Removal: PEDOT:PSS based Disposable Humidity Sensor for Skin Moisture Monitoring

Abstract

This paper presents a flexible and disposable humidity sensor based on Poly(3,4ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS). The sensing layer is developed by drop casting PEDOT:PSS on screen printed graphene-carbon (G-C) based interdigitated electrodes (IDEs) on paper substrate. The humidity sensing properties are investigated in a wide humidity range $(25 \% \mathbf{R H}$ - $90 \% \mathrm{RH})$ at room temperature (RT; $\left.27^{\circ} \mathrm{C} \pm 2{}^{\circ} \mathrm{C}\right)$. The sensor exhibits substantial % response $(118.5 \%$ at $90 \% \mathrm{RH})$ in the considered range with response/recovery time as $70 / 30$ seconds (sec.). The applicability of the sensor has been demonstrated for skin moisture/humidity monitoring under normal and moist conditions. The obtained results indicate the suitability of the developed sensor for applications such as skin moisture analysis, environmental monitoring, agriculture, healthcare, non-contact switching and industrial applications.