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Recently, Longi Green Energy Technology Co., Ltd. (hereinafter referred to as "Longi"), as the first unit, published a research paper titled "Silicon heterojunction back contact solar cells by laser patterning" online in the journal Nature, reporting for the first time the research results of breaking through 27% of the photoelectric conversion efficiency of crystalline silicon cells through full ...
The optical properties of photonic crystals are closely related to their lattice constants, which are usually required to be in the same order of magnitude as the operating wavelength. In a crystal material, the photonic crystal structure is formed by the periodic arrangement in space of units whose dielectric constant is different from that of the crystal itself, and whose lattice constant depend...
Brother Australia is a renowned printing manufacturer that has expanded its product portfolio by launching its latest innovative commercial machine series, the professional monochrome laser machine series. These extraordinary devices are designed to extend the lifespan of commercial printing cycles and improve productivity. Due to their sturdy components and durable consumables, these extraordinar...
Chinese industrial 3D printer manufacturer Huashu High tech has launched the FS811M metal powder bed fusion series platform. The FS811M series has a construction volume of 840 x 840 x 960 millimeters and can be equipped with powerful 6, 8, 10, or 12 x 500 watt fiber lasers."As the latest member of the Huashu High tech Metal 3D printer product portfolio, FS811M originates from our joint innovation ...
1. Research backgroundDirected energy deposition (DED), as an efficient and economical technology in the field of additive manufacturing (AM), is widely used in the manufacturing of metal materials. However, its high heating and cooling rates, as well as significant temperature gradients, often lead to rapid solidification, forming cross layer columnar grains and internal defects, seriously affect...