Laser-Induced Highly Stable Conductive Hydrogels for Robust Bioelectronics

Abstract

Highlights Stable adhesion of pure poly(3,4-ethylenedioxythiophene):polystyrene sulfonate hydrogel to polymer substrates was successfully achieved via a laser-induced phase separation and adhesion method. The resulting conductive hydrogel exhibits a superior wet electrical conductivity up to 101.4 S cm−1 and a spatial resolution down to 5 μm. Such hydrogels hold great promise in robust bio-interfacing electrodes suitable for long-term high-fidelity signal monitoring.

Keywords

• Laser processing
• Conductive hydrogels
• Stable interface
• Bio-interfacing electrodes
• Bioelectronic application