1. Center for Biologically Inspired Materials and Material Systems (CBIMMS), Duke University, Box 90271, Durham, North Carolina 27708
2. Department of Electrical and Computer Engineering, Duke University, Box 90201, Durham, North Carolina 27708
3. Center for Metamaterials and Integrated Plasmonics (CMIP), Duke University, Box 90271, Durham, North Carolina 27708
4. nanoComposix, Inc., 4878 Ronson Court, Suite K, San Diego, California 92111
5. Department of Mechanical Engineering and Materials Science, Duke University, Box 90300, Durham, North Carolina 27708
6. Department of Biomedical Engineering, Duke University, Box 90281, Durham, North Carolina 27708