Fig. 2: Bioadhesive materials for hairlike electrodes.
From: Stick-and-play bioadhesive hairlike electrodes for chronic EEG recording on human
a Schematic illustration of bioadhesive material and its 3D printing. b Photograph of bioadhesive ink for 3D printing. c Photographs of printed bioadhesive in twisted (top) and stretched (bottom) form. (Scale bar- 4 cm) d Interfacial adhesion force of the bioadhesive on skin. e Photographs highlighting comparison of the adhesion of device on skin using the developed bioadhesive material (i) and commercial EEG gel (ii). f Adhesion force of hairlike device with bioadhesive and commercial EEG gel. g Plot for the comparison of adhesion force of hairlike device with bioadhesive and commercial EEG gel (n = 4) Statistical significance and P values are determined by two-sided unpaired t-test; ****P < 0.0001. Errors bars indicate standard deviation. h Experimental stress strain curve of 3D printed dog-bone shaped specimen of bioadhesive material.
