Herein, a novel adhesive hydrogel (PAA-Dopa-Zr 4+) capable of strain sensing is proposed with antifreezing, nondrying, strong surface adhesion, and tunable mechanical properties. 3,4-Dihydroxyphenyl- ...

We tested 16 electrode materials for their electrical characteristics and normalized all results to a 1 cm2 area. The electrode pair impedance versus frequency from 5 to 2000 Hz ranged from 20 to 58 ...