fig1

Figure 1. Design and fabrication of cellulose/poly(vinylidene fluoride) (PVDF) glycerogels (GGs) for high-performance piezoelectric applications. (A) Schematic of the process employed to prepare cellulose/PVDF GGs. (B) Magnified schematics of neat cellulose, (1/2)% cellulose/PVDF gel, and (0.5/5)% cellulose/PVDF gel; the circular area indicates the type of bonding and crystalline structures. (C) Illustration of the silver-sputtering process, and photograph of the silver-sputtered (1/2)% cellulose/PVDF GG, which was used to generate piezoelectricity. (D) Illustrative mechanism of force-induced polarization in the (1/2)% cellulose/PVDF GG-based device to generate piezoelectricity for an external circuit. DMAc: N,N′-dimethylacetamide.