Facile Preparation of Highly Stretchable TPU/Ag Nanowire Strain Sensor with Spring-Like Configuration.
Stretchable nano-fibers have attracted dramatic attention for the utility in wearable and flexible electronics. In the present case, Ag nanowires (AgNWs)-intertwined thermoplastic polyurethanes (TPU) unwoven nano-membrane is fabricated by an electrospinning method and dip coating technique. Then a strain sensor with a spring-like configuration is fabricated by a twisted method. The sensor exhibits superior electrical conductivity up to 3990 S cm-1 due to the high weight percentage of the Ag nanowires. Additionally, thanks to the free-standing spring-like configuration that consists of uniform neat loops, the strain sensor can detect a superior strain up to 900% at the point the sensor ruptures. On the other hand, the configuration can mostly protect the AgNWs from falling off. Furthermore, major human motion detection, like movement of a human forefinger, and minor human motion detection, such as a wrist pulse, show the possible application of the sensor in the field of flexible electronics.
['Pan|Wei|W|', 'Wang|Juan|J|', 'Li|Yong-Ping|YP|', 'Sun|Xiao-Bo|XB|', 'Wang|Jin-Ping|JP|', 'Wang|Xiao-Xiong|XX|', 'Zhang|Jun|J|', 'You|Hai-Dong|HD|', 'Yu|Gui-Feng|GF|', 'Long|Yun-Ze|YZ|']
stretchable sensor spring-like configuration electrospinning