Abstract

A humidity sensor has received great interest in sensor fields because of their various applications. Especially, a stretchable humidity sensor which has mechanical stability has remained challenging issue in stretchable electronics. Here, we report a novel stretchable nanostructured polyaniline humidity sensor. The sensor was fabricated by simple fabrication methods such as pre-stretching process and self-assembly texturing process. The periodically wrinkled structure supported by microstructured elastomeric substrates provides an excellent stretchability. The micro-textured substrate was introduced for solving crack problem by Poisson effect as a stretchable sensor. The sensor maintains its humidity sensitivity well at the differed elongations. To the best our knowledge, this is the first report for a stretchable humidity sensor.

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