2013/04/26 by Wenzhuo Wu, Xiaonan Wen, Zhong Lin Wang · 3 citations
Engineering · Neuroscience · Materials Science · #Advanced Sensor and Energy Harvesting Materials #Tactile and Sensory Interactions #Conducting polymers and applications
paper · doi:10.1126/science.1234855
openalex publication_date 2013/04/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
Designing, fabricating, and integrating arrays of nanodevices into a functional system are the key to transferring nanoscale science into applicable nanotechnology. We report large-array three-dimensional (3D) circuitry integration of piezotronic transistors based on vertical zinc oxide nanowires as an active taxel-addressable pressure/force sensor matrix for tactile imaging. Using the piezoelectric polarization charges created at a metal-semiconductor interface under strain to gate/modulate the transport process of local charge carriers, we designed independently addressable two-terminal transistor arrays, which convert mechanical stimuli applied to the devices into local electronic controlling signals. The device matrix can achieve shape-adaptive high-resolution tactile imaging and self-powered, multidimensional active sensing. The 3D piezotronic transistor array may have applications in human-electronics interfacing, smart skin, and micro- and nanoelectromechanical systems.