Development of an Electroactive Hydrogel as a Scaffold for Excitable Tissues

Figure 3

Photomerge of phase contrast images of hydrogel before (a) and after (b) stimulation. Arrow shows accumulation of bubbles on the anode (positive electrode) side of gel at 5x magnification. When electrical stimulation was removed, hydrogels relaxed back into their original conformation. When the polarity of the electrical stimulation was reversed, hydrogels deformed in the opposite direction.

(a)

(b)