* Corresponding authors

^a State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
E-mail: bike@bupt.edu.cn

^b The Department of Chemistry and Biochemistry, The City College of New York, The Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, NY 10016, USA
E-mail: sobrien@ccny.cuny.edu

^c State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

^d School of Journalism and Communication, Beijing Normal University, Beijing 100875, China