fig8

Figure 8. Semi-dry electrode interfaces. (A and B) The AgNW/AgPHMS semi-dry EEG electrode^[94]; (C-E) Semi-dry electrode based on PVA/PAM double-network hydrogel, providing low-impedance contact for long-term high-quality signal bioelectric acquisition^[95]; (F and G) Semi-dry electrode for EEG acquisition^[96]. AgNW/AgPHMS: Silver nanowire/PVA hydrogel/melamine sponge; EEG: electroencephalogram; PVA: polyvinyl alcohol; PAM: polyacrylamide.