Professor Wang Yu of Our University Has Made Great Breakthrough in Controllable Synthesis and Preparation Research of Two-dimensional Struct

Internationally authoritative academic periodical Nature Communications published research thesis of Professor Wang Yu of Material Science and Engineering School of our university on July 14. The title of paper is “Direct TEM observations of growth mechanisms of two-dimensional MoS2 flakes” and its main content is in-situ observing growth course of Molybdenum Disulfide - a new two-dimensional material under transmission electron microscope.

Such thesis has been completed via cooperation of two subject teams led by Professor Wang Yu of Material Science and Engineering School of our university and Professor Chai Yang of School of Applied Physics of The Hong Kong Polytechnic University respectively, the publication of which has been a ground-breaking scientific research achievement in external cooperation actively promoted by Material Science and Engineering School. Currently, consequent scientific research cooperation is still in intense and orderly expansion.

Two-dimensional material is one of major frontier domains in existing material science research. Upon years’ research, it has been found that some compounds such as Molybdenum Disulfide with relatively complex chemical components can also form two-dimensional shape. As two-dimensional material has extensive application prospect in such areas as semiconductor, energy and environmental protection, relevant researches draw supreme attentions domestically and internationally.

Against the difficulty of “how do sulphur and Mo atoms arrange to unique two-dimensional structure via high temperature heating”, subject team has subtly designed a chemical synthesis approach, and firstly realized real-time observation and recording on atom dimension of Molybdenum Disulfide during growth with heating sample table and in-situ TEM based on MEMS. Research result has vital guiding significance for controllable synthesis and preparation of two-dimensional structure of Molybdenum Disulfide, and the applied method is of universality and can be generalized to more material systems.

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