[1] Chinese Acad Sci, Key Labatory Nanodevices & Applicat, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China
[2] Chinese Acad Sci, Nano Fabricat Facil, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China
[3] Hong Kong Univ Sci & Technol, Kowloon, Hong Kong, Peoples R China
[4] Suzhou Silikron Semicond Technol Corp Ltd, Suzhou, Peoples R China