Fig. 6
From: Recent advances in 3D printable conductive hydrogel inks for neural engineering
Bioelectronic application of conductive hydrogel. a 3D printing conductive ink on muscle and in vivo actuation of electrical stimulation. Reproduced with permission from [219], copyright Elsevier, 2023. b Digital light patterning of PA (PEDOT:PSS/AuNP) hydrogel for neural signal recording and stimulation: i) schematic of selective patterning of ink for fabrication of neural recording device, ii) neural stimulation with PA electrode insulated with PDMS (polydimethylsiloxane) and TPU (thermoplastic polyurethane) to induce leg movement, and iii) LFP (local field potential) recording on mouse brain slice and peak shift observed for excited state (bicuculline drug dose). Reproduced with permission from [35], copyright American Association for the Advancement of Science, 2022