| Autor: |
Cai SY; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Chang CH; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Lin HI; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Huang YF; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Lin WJ; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Lin SY; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Liou YR; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Shen TL; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Huang YH; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Tsao PW; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Tzou CY; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Liao YM; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan., Chen YF; Department of Physics , National Taiwan University , Taipei 10617 , Taiwan. |
| Abstrakt: |
In recent years, flexible magnetoelectronics has attracted a great attention for its intriguing functionalities and potential applications, such as healthcare, memory, soft robots, navigation, and touchless human-machine interaction systems. Here, we provide the first attempt to demonstrate a new type of magneto-piezoresistance device, which possesses an ultrahigh sensitivity with several orders of resistance change under an external magnetic field (100 mT). In our device, Fe-Ni alloy powders are embedded in the silver nanowire-coated micropyramid polydimethylsiloxane films. Our devices can not only serve as an on/off switch but also act as a sensor that can detect different magnetic fields because of its ultrahigh sensitivity, which is very useful for the application in analog signal communication. Moreover, our devices contain several key features, including large-area and easy fabrication processes, fast response time, low working voltage, low power consumption, excellent flexibility, and admirable compatibility onto a freeform surface, which are the critical criteria for the future development of touchless human-machine interaction systems. On the basis of all of these unique characteristics, we have demonstrated a nontouch piano keyboard, instantaneous magnetic field visualization, and autonomous power system, making our new devices be integrable with magnetic field and enable to be implemented into our daily life applications with unfamiliar human senses. Our approach therefore paves a useful route for the development of wearable electronics and intelligent systems. |
