Pressure‐Temperature Dual‐Parameter Flexible Sensors Based on Conformal Printing of Conducting Polymer PEDOT:PSS on Microstructured Substrate

Abstract Flexible sensors play an important role in collecting stimuli information and sending them to a central processing unit or cloud for analysis decision‐making. As much is needed be collected, the fabrication of multiparameter flexible becoming increasingly urgent. To this end, conducting polymer‐based composites have been proven as promising materials developing pressure‐temperature dual‐parameter sensors. However, ideal with fully decoupled readings, good sensitivity, simple preparation process remain challenges. Here, strategy fabricating sensor based on conformal printing polymer poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) surface microstructured polydimethylsiloxane (PDMS) substrate demonstrated. It found that secondary doped PEDOT:PSS provides temperature‐independent conductivity. Combined sea‐island PDMS substrate, screen‐printed demonstrates reading ability, competitive stability. The excellent sensing properties devices, maximum pressure sensitivity 134.25 kPa −1 linear response region over 300 well highly sensitive temperature finger touch, together their unique advantages low‐cost large‐area fabrication, make printed applications electric‐skin (e‐skin), human‐machine interaction, robotics.