1. Department of Chemistry, University of California, Irvine, California 92617, United States
2. School of Electrical Engineering and Computer Science, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
3. Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
4. Department of Biomedical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
5. Department of Molecular Biology and Biochemistry, University of California, Irvine, California 92617, United States