A Highly Sensitive Flexible Piezoresistive Sensor Based on Wrinkled CNT-PDMS

Abstract

This paper presents a highly sensitive flexible piezoresistive sensor based on wrinkled structure. By adding carbon nanotube(CNT) into the mixing of polydimethylsiloxane(PDMS), conductive PDMS can be fabricated. Patterned with monolayer wrinkle structure, this stretchable CNT PDMS can be used as a thin and flexible pressure sensor. The wrinkle structure enables the sensor with high sensitivity (8.3 kPa-1) in low pressure region(0.01kPa). In addition, the result of force image test shows that the sensor array can be used into detecting pressure distribution and measuring force images.