NANO LETTERS

DAI JY, WANG DX, ZHANG M, NIU TC, LI A, YE M, QIAO S, DING GQ, XIE XM, WANG YQ, CHU PK, YUAN QH, DI ZF, WANG X, DING F, YAKOBSON BI

MATERIALS LETTERS

WANG ZW, XUE ZY, WANG G, DAI JY, ZHENG XH, MA J, LI YH, ZHANG M