APPLIED PHYSICS LETTERS

GAO M, ZHANG YF, HUANG L, PAN Y, WANG YL, DING F, LIN Y, DU SX, GAO HJ

NANO RESEARCH

LI J, ZHUANG JN, SHEN CM, TIAN Y, QUE YD, MA RS, PAN JB, ZHANG YF, WANG YL, DU SX, DING F, GAO HJ