1. The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
2. Key Laboratory
of Luminescent and Real-Time Analytical Chemistry, Ministry of Education,
School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People’s Republic of China
3. School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
4. Department of Physics, Arizona State University, Tempe, Arizona 85287, United States