Fig. 1: Fabrication and characterization of high precision patterned Ag nanofibers (Ag NFs) coil.

a Concept illustration the fabrication process of Ag NFs electrode with bioinspired net structure. b SEM images of high-precision patterned Ag NFs electrode. c Digital photos of large-area patterned electrode on PDMS substrate. Inductance and resistance of different electrodes with change in (d) length, (e) width, (f) shape, and (g) density. h Inductance variation of circular electrodes with radius. i Inductance comparison between two-turn spiral coil and two single-turn circular electrodes. j L and Q variation of electrodes with number of turns.