▎ 摘　　要

NOVELTY - Method involves printing and molding a gel-like ink on a substrate according to pattern information. The gel-like ink is froze and dried to obtain a patterned three-dimensional (3D) gas gel on an electronegative material/charge trapping material, and finally assembled with an electrode layer to form a non-contact sensor by friction nano-power generation principle. The electronegative friction layer ink is injected into the syringe of the direct writing printer. The printing substrate is fixed on the printing platform. USE - Method for preparing a three-dimensional non-contact sensor based on direct writing printing in a somatosensory interaction system for man-machine interaction. ADVANTAGE - The method uses direct writing printing to obtain patterned three-dimensional porous gas gel on electronegative material/charge capture material, forming a non-contact sensor based on friction nano power generation principle. The method is simple, fast, it can effectively save cost, and obtains the patterned 3-dimensional structure with high specific area, effectively improving the charge separation transmission capability, to increase the output voltage, reducing charge is reduced to reduce charge attenuation, to improve the electrical performance of the noncontact sensor.