NANO LETTERS

SHAO YC, LIU Y, CHEN XL, CHEN C, SARPKAYA I, CHEN ZL, FANG YJ, KONG JM, WATANABE K, TANIGUCHI T, TAYLOR A, HUANG JS, XIA FN

NANO LETTERS

CHEN XQ, LIU XL, WU B, NAN HY, GUO H, NI ZH, WANG FQ, WANG XM, SHI Y, WANG XR