Fig. 1: Gels used in our electroadhesion studies.
From: Reversible electroadhesion of hydrogels to animal tissues for suture-less repair of cuts or tears

a Anionic gel of alginate (Alg), crosslinked by divalent Ca2+ cations. The gel is made in the form of a hollow tube. b Cationic QDM gel strip, made by polymerization of acrylamide derivatives. The photos show that the gel is elastic, stretchable and flexible. Schematics of the gel structure are shown as insets in each case.