Stretchable strain sensor based on metal nanoparticle thin film for human motion detection & flexible pressure sensing devices

Stretchable strain sensor can be used as wearable motion detection device and the sensing element of flexible pressure sensor. We made the stretchable strain sensor by single-step direct transfer/patterning process which is simple and low-cost fabrication method. Metal nanoparticle ink as sensing material was transferred onto polydimethylsiloxane (PDMS) and the opening/closure of its micro-cracks is believed to be the mechanism of our stretchable strain sensor. Also, we demonstrated the potential of stretchable strain sensor as human motion detector and flexible pressure sensor.