Flexible strain sensor can effectively detect hand motion due to good stretchability and flexibility.Flexible strain sensor is prepared using acrylate elastomers and silver nanowires(AgNWs).MSP430F2132 chip is used for signal acquisition and processing

and NT3H2111 chip for near field communication(NFC)wireless transmission and energy self-harvesting unit.An electronic system is prepared

based on the sensor for finger motion detection.The results show that the sensor has good linearity in the strain range of 0%~45%

with good electrical performance under 10% strain cyclic testing.The electronic system can effectively detect the bending changes of in each finger joint

and can upload the complex signals of static hand motion to the mobile phone through NFC and achieve motion control of the virtual hand.