Contact: Marcia Goodrich
Michigan Technological University
Caption: A hydrogel treated with dopamine and iron ions is flat under neutral conditions (top photo) and bends in an alkaline state. Michigan Tech's Bruce P. Lee borrowed chemistry found in the adhesive proteins of mussels, left, to make his hydrogel actuator.
Credit: Bruce P. Lee
Usage Restrictions: None
Related news release: Pumping iron: A hydrogel actuator with mussel tone