1. Department of Mechanical Engineering; University of Connecticut; Storrs CT 06269 USA
2. Department of Biomedical Engineering; University of Connecticut; Storrs CT 06269 USA
3. Department of Electrical & Computer Engineering; University of California Santa Barbara; Santa Barbara CA 93106 USA
4. Department of Mechanical Engineering and Applied Mechanics; University of Pennsylvania; Philadelphia PA 19104 USA
5. Institute of Materials Science; University of Connecticut; Storrs CT 06269 USA
6. Institute for Regenerative Engineering; University of Connecticut Health Center; Farmington CT 06030 USA