[原分所演講] IAMS lecture announcement (Mar 16 & Mar 19)
消息來源:原分所
截止日期:2015-03-14

Title: Synthesis, applications of TMD monolayers and their heterostructures

Speaker: Dr. Yi-Hsien Lee (Assistant Professor of Dept. Materials Science and Engineering, NTHU)

Time: 11:00AM, March 16 (Monday)

Place: Dr. Poe Lecture Hall, IAMS (本所浦大邦講堂 臺大校園內)

Contact: Dr. Kuei-Hsien Chen 陳貴賢博士

Abstract:

Monolayers of van der Waals (vdw) materials, including graphene, h-BN, and MoS2, have been highlighted regarding both scientific and industrial aspects due to novel physical phenomenon inherited from the reduced dimensionality. Layered transition metal dichalcogenides (TMD) atomic layers, being considered as the thinnest semiconductor, exhibit great potential for advanced nano-devices. Monolayer in the class of offered a burgeoning field in fundamental physics, energy harvesting, electronics and optoelectronics. Recently, atomically thin heterostructures of TMD monolayer with various geometrical and energy band alignments are expected to be the key materials for next generation flexible optoelectronics. The individual TMD monolayers can be adjoined vertically or laterally to construct diverse heterostructures which are difficult to reach with the laborious pick up-and-transfer method of the exfoliated flakes. Here, we have achieved a direct synthesis of various heterostructures of monolayer TMDs. Symmetry and the interface of these heterostructures were investigated using optical analysis and atomic-resolution scanning TEM. Our method offers a controllable synthesis of to obtain high-quality heterostructures of TMD atomic layers with diverse interface geometry. Furthermore, some applications and physical phenomenon of individual TMD monolayers and their heterostructures were presented.

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Title: Fluctuation Relations between Hierarchical Kinetic Networks

Speaker: Prof. Cheng-Hung Chang (Institute of Physics, National Chiao Tung Univ.) 張正宏副教授 (交通大學物理所)

Time: 3:30PM, March 19 (Thursday)

Place: Dr. Poe Lecture Hall, IAMS (本所浦大邦講堂 臺大校園內)

Contact: Dr. Kaito Takahashi 高橋開人博士