1. Biomaterials Innovation Research Center; Department of Medicine Brigham and Women's Hospital; Harvard Medical School; Boston MA 02139 USA
2. Harvard-MIT Division of Health Sciences and Technology; Massachusetts Institute of Technology; Cambridge MA 02139 USA
3. Wyss Institute for Biologically Inspired Engineering; Harvard University; Boston MA 02115 USA
4. Center of Nanotechnology; King Abdulaziz University; Jeddah 21589 Saudi Arabia
5. Department of Chemistry and Waterloo Institute for Nanotechnology; University of Waterloo; 200 University Ave. West Waterloo Ontario N2L 3G1 Canada
6. Department of Energy Engineering; Gyeongnam National University of Science and Technology; Jinju Gyeongnam 660-758 Republic of Korea
7. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology; Cambridge MA 02139 USA
8. College of Animal Bioscience and Technology; Department of Bioindustrial Technologies; Konkuk University; Hwayang-dong Kwangjin-gu Seoul 143-701 Korea
9. Department of Physics; King Abdulaziz University; Jeddah 21569 Saudi Arabia
10. Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology; School of Dentistry; Kyung Hee University; Seoul 130-701 Republic of Korea