EurekAlert July 30, 2020
The existing wearable bioelectronics are susceptible to motion artifacts as they lack proper adhesion and conformal interfacing with the skin during motion. A team of researchers in the US (University of Houston, University of Chicago) has developed ultra-conformal Drawn-on-Skin (DoS) electronics as a new bioelectronic platform for on-demand multifunctional, motion artifact-free sensing. The devices are based on the Ag flakes/poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (Ag-PEDOT:PSS) composite, poly(3-hexylthiophene-2,5-diyl) nanofibrils (P3HT-NF), and ion gel as the conductive, semiconducting, and dielectric inks, respectively. As a versatile platform, DoS electronics devices such as thin-film transistors, strain sensors, and electrophysiological sensors have been developed. It is stable in the presence of sweat, reliable capturing signals over a long duration, strong adherence to the skin, and immune to motion artifacts during sensing…read more. Open Access TECHNICAL ARTICLE
DoS electronics platform featuring conductive and semiconducting inks. Credit: Nature Communications volume 11, Article number: 3823 (2020)Â