Taxel-Addressable Matrix of Vertical-Nanowire Piezotronic Transistors for Active and Adaptive Tactile Imaging

摘要: Designing, fabricating, and integrating arrays of nanodevices into a functional system are the key to transferring nanoscale science applicable nanotechnology. We report large-array three-dimensional (3D) circuitry integration piezotronic transistors based on vertical zinc oxide nanowires as an active taxel-addressable pressure/force sensor matrix for tactile imaging. Using piezoelectric polarization charges created at metal-semiconductor interface under strain gate/modulate transport process local charge carriers, we designed independently addressable two-terminal transistor arrays, which convert mechanical stimuli applied devices electronic controlling signals. The device can achieve shape-adaptive high-resolution imaging self-powered, multidimensional sensing. 3D array may have applications in human-electronics interfacing, smart skin, micro- nanoelectromechanical systems.