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Recently, researcher Zhang Wenfu from the National Key Laboratory of Ultrafast Optical Science and Technology of Xi'an Institute of Optics and Mechanics, researcher Chen Wei from the academician team of Guo Guangcan from the Key Laboratory of Quantum Information of the Chinese Academy of Sciences of the University of Science and Technology of China, and professor Yang Jun from the School of Intell...
High brightness semiconductor lasers have extremely important applications in fields such as laser radar. Traditional semiconductor lasers face challenges such as large vertical divergence angle, elliptical beam output, multiple lateral modes, and poor beam quality, which limit the direct application of high brightness semiconductor lasers.In response to this challenge, the team from the Bimberg S...
Recently, the team led by Wang Rui from the Future Industry Research Center and the School of Engineering at Xihu University has made significant breakthroughs in the field of flexible stacked solar cells. They have successfully stacked perovskite and copper indium gallium selenide materials together, resulting in a photoelectric conversion efficiency of 23.4%. The related research paper was recen...
Two dimensional transition metal chalcogenides have multi valley structures in their energy bands, giving them electron valley degrees of freedom, making them an ideal platform for studying multi body interactions. As the main mechanism of valley depolarization, the valley scattering process of free electrons or bound excitons is crucial for exploring excited state electron phonon interactions and...
The gravitational wave background was first detected in 2016. This was announced after the release of the first dataset by the European pulsar timing array. The second set of data has just been released, combined with the timed array of Indian pulsars, and both studies have confirmed the existence of the background. The latest theory seems to suggest that we are seeing a comprehensive signal of th...