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The world's thinnest known optical crystal is here! hexagonal boron nitride
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On the quartz plate, the corner rhombic boron nitride crystal with a thickness of just 1 to 3 microns is as thin as a cicada's wing. Still, its energy performance is 100 to 10,000 times higher than that of traditional optical crystals. This is the thinnest known optical crystal in the world developed by Chinese scientists. At the opening event of the 2024 Zhongguancun Online forum Yearly Meeting hung on April 25, this crystal was launched as a major achievement.
Academician Wang Enge of the Quantum Products Scientific Research Facility of the Institution of Physics of Peking College, Professor Liu Kaihui of the Institute of Condensed Matter Physics and Materials Physics, and Hong Hao, a specially assigned associate researcher, and various other researchers have actually created a brand-new crystal layout technique: by turning each item of rhombic boron nitride material at a details angle like twisting a Rubik's Cube, the stacked optical crystal can minimize the power consumption of laser going through and effectively generate the needed laser.
The crystal design concept pioneered by Chinese researchers is combined with the preparation approach to efficiently "slim down" the optical crystal to 1 to 3 microns. The density of conventional optical crystals is in the millimeter to centimeter degree.
The research and development team summarized this method as the user interface angle theory of two-dimensional materials. "The application of this concept is expected to lower the dimension of lasers to the micron level. Some products that were difficult to make optical crystals in the past are additionally expected to find back to life by rotating the angle of product stacking," Liu Kaihui told press reporters.
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