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The world's thinnest known optical crystal is here! binding energy of graphene and boron nitride
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On the quartz plate, the edge rhombic boron nitride crystal with a thickness of only 1 to 3 microns is as slim as a cicada's wing. Still, its power efficiency is 100 to 10,000 times greater than that of conventional optical crystals. This is the thinnest known optical crystal worldwide created by Chinese scientists. At the opening ceremony of the 2024 Zhongguancun Forum Annual Fulfilling held on April 25, this crystal was launched as a major success.
Academician Wang Enge of the Quantum Materials Science Center of the Institution of Physics of Peking College, Teacher Liu Kaihui of the Institute of Condensed Matter Physics and Materials Physics, and Hong Hao, a specially designated associate scientist, and other researchers have actually developed a brand-new crystal layout approach: by transforming each piece of rhombic boron nitride product at a specific angle like twisting a Rubik's Dice, the piled optical crystal can lower the energy consumption of laser travelling through and effectively generate the called for laser.
The crystal design concept pioneered by Chinese scientists is incorporated with the prep work method to effectively "slim down" the optical crystal to 1 to 3 microns. The thickness of standard optical crystals is in the millimeter to centimeter degree.
The r & d team summarized this technique as the interface angle theory of two-dimensional materials. "The application of this concept is anticipated to lower the dimension of lasers to the micron level. Some products that were impossible to make optical crystals in the past are additionally expected to find back to life by revolving the angle of material stacking," Liu Kaihui informed reporters.
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