1. Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
Institute of Analytical Chemistry, College of Chemistry and Molecular
Engineering, Peking University, Beijing, 100871, China
2. Division of Nano Metrology and Materials
Measurement, National Institute of Metrology, Beijing, 100029, China
3. Suzhou Nanomicro Technology Company Limited, Suzhou, Jiangsu 215123, China