APPLIED PHYSICS LETTERS

WANG YY, NI ZH, LI AZ, ZAFAR Z, ZHANG Y, NI ZH, QU SL, QIU T, YU T, SHEN ZX

CARBON

WEI ZY, NI ZH, BI KD, CHEN MH, CHEN YF

PHYSICS LETTERS A

WEI ZY, NI ZH, BI KD, CHEN MH, CHEN YF

ACS NANO

XU YN, ZHAN D, LIU L, SUO H, NI ZH, THUONG TN, ZHAO C, SHEN ZX