NANO LETTERS

GUO H, WANG XY, HUANG L, JIN X, YANG ZZ, ZHOU Z, HU H, ZHANG YY, LU HL, ZHANG QH, SHEN CM, LIN X, GU L, DAI Q, BAO LH, DU SX, HOFER W, PANTELIDES ST, GAO HJ

CRYSTALS

SONG WR, REN F, WANG YY, YIN Y, ZHANG S, SHI B, FENG T, WANG JW, LIANG M, ZHANG YY, WEI TB, YAN JC, WANG JX, LI JM, YI XY, LIU ZQ