The application provides a full-degradable flexible
pressure sensor based on a luffa
sponge biological structure and a preparation method.The sensor comprises, from bottom to top, a lower degradable flexible packaging layer, a lower conductive
electrode, a luffa
sponge structure composite conductive layer, an upper conductive
electrode and an upper degradable flexible packaging layer.The application combines the natural luffa
sponge flexible three-dimensional skeleton with the degradable conductive material, fully utilizes the multi-stage deformation between different conductive networks, single conductive
fiber and the conductive material itself in the luffa sponge structure composite conductive layer, realizes the switching of the force sensing mechanism in different pressure ranges, expands the
pressure detection range and keeps good linear response in a wide range.The device structure provided by the application utilizes the
topography structure of the natural
plant, is simple to manufacture and low in cost, is fully degradable under natural conditions, is environment-friendly, and can have good response to external static and
dynamic pressure in a wide range.