9:30 AM - 11:30 AM [12a-PA2-58] Sub-micron size single crystal formation and layer by layer growth of WS2 by alkali-metal-free gas source CVD 〇Toshifumi Irisawa1, Naoya Okada1, Mitsuhiro Okada1, Wen-Hsin Chang1 (1.AIST)