1. The Alan G. MacDiarmid NanoTech Institute The University of Texas at Dallas Richardson TX 75080 USA
2. Center for Self‐powered Actuation and Department of Biomedical Engineering Hanyang University Seoul 133‐791 South Korea
3. Nano‐Science and Technology Center Lintec of America Richardson TX 75080 USA
4. Department of Electrical Engineering The University of Texas at Dallas Richardson TX 75080 USA
5. ARC Centre of Excellence for Electromaterials Science Intelligent Polymer Research Institute University of Wollongong Wollongong New South Wales 2522 Australia