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IntroductionThe small hole mode swing laser welding has gained increasing recognition due to its ability to bridge gaps, refine microstructures, and enhance the mechanical properties of welds. However, the effects of amplitude, frequency, welding speed, laser beam power, and beam radius on heat flux distribution, melting mode, and three-dimensional temperature field have not been well understood. ...
Recently, the reporter learned from Changguang Satellite Technology Co., Ltd. (hereinafter referred to as "Changguang Satellite") that the company used a self-developed vehicle mounted laser communication ground station to conduct satellite ground laser high-speed image transmission experiments with the onboard laser communication terminal of the "Jilin No.1" constellation MF02A04 satellite and ac...
With the rise of clean energy and the enhancement of environmental awareness, thin film solar cells are gradually replacing traditional silicon-based solar cells as an efficient energy conversion device.However, to achieve efficient solar cell conversion rates, the key is to ensure that thin film solar cells have clear edges and maximize light absorption. In this regard, the unique advantages of h...
Scientists at the Cavendish laboratory have discovered the spin coherence of hexagonal boron nitride (hBN) under normal conditions, providing new prospects for the application of quantum technology.Researchers at Cavendish Laboratory have found that a single "atomic defect" in a material called hexagonal boron nitride (hBN) maintains spin coherence at room temperature and can be manipulated using ...
Optical equipment is an integral part of technologies such as data centers and autonomous vehicle, which are constantly developing to meet the needs of complex applications. The challenge faced by designers is to manipulate light at the wavelength scale to achieve the required optical properties, which requires precision at both the nano and macro scales. Nanoscale structures, such as those on LED...