Two dimensional space material TMD is not suitable for manufacturing LED lamp

- Cui Xiaodong think that research should not be limited to the original application, curiosity is power. Hong Kong for map

Hongkong Wen Wei Po, the reporter to explore the mysteries of nature, physicists strive to study, every small step in the experimental process, are a big step towards human progress. University of Hong Kong professor Cui Xiaodong Department of physics of this year "the Croucher Award" winner of outstanding scientific research, focusing on the material physical properties of two-dimensional space, and found two chalcogenide (2D Transition metal dichalcogenides, referred to as TMD) optical material is not good, not suitable for manufacturing solar panels or LED lights. Cui Xiaodong believes that not all physical discoveries can be applied immediately to life, but there are too many unknown things in the world, curiosity is the driving force of research.

Cui Xiaodong, who joined the Department of physics in 2004, mainly studies the phenomenon of electron spin. With the discovery of new two-dimensional materials in the field of science, he began to study this kind of material in 2011, including the physical phenomena of two-dimensional sulfur compounds.

He explained: "TMD is a kind of mineral, the electron spin and can further study characteristics of valley of degree of freedom, to understand these characteristics, to further study how to control, and the potential applications, a wide range of uses. "

Two dimensional TMD material is a new field, Cui Xiaodong's research work, such as looking for the exit in the maze, need to try one by one, the process will inevitably encounter a dead end: "sometimes our results are negative, which is not only the negative assumptions prove, a possibility. "

It sounds very discouraged, but for scientists, each experiment is also the academic theory provides a clue, "for example once scientists have suggested that TMD can be used as solar panels or LED lights, but our research shows that TMD is not a good optical material may not be suitable for this application. "

Cui Xiaodong: curiosity is the driving force

Although the new material in the short term may not be applied in life, but Cui Xiaodong believes that the original intention of the study can not be limited to the application, the invention of electricity, no one can imagine today's application. There are too many unknown things in the world, curiosity is the driving force of research, application is a by-product. "However, review the history of technology development, a lot of revolutionary invention, are derived from the foundation of the development of the spirit of pure curiosity, scientists are working on research achievements, for many years in the laboratory.

For the award, Cui Xiaodong was pleased, coupled with the current lack of research resources, Awards 2 million yuan research funding for him is more important. He also mentioned that Hongkong cannot expect each graduate to do academic research, for example, refers to the students in the United States to high-tech companies in Hongkong employment, but the lack of mature high-tech industries to absorb graduates, stifling the cultivation of talents.

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