CHINA-BEIJING-ULTRATHIN OPTICAL CRYSTAL-INVENTION (CN)

CHINA-BEIJING-ULTRATHIN OPTICAL CRYSTAL-INVENTION (CN)

(231219) -- BEIJING, Dec. 19, 2023 (Xinhua) -- This photo taken on Dec. 15, 2023 shows a Twist Boron Nitride (TBN) crystal placed on a piece of fused silica in Peking University, Beijing, capital of China. A team of Chinese researchers used a novel theory to invent a new type of ultrathin optical crystal with high energy efficiency, laying the foundation for next-generation laser technology. The research findings were recently published in the journal Physical Review Letters. TO GO WITH "China Focus: Chinese scientists invent ultrathin optical crystal for next-generation laser tech" (Xinhua/Wei Mengjia)

LEDs for Medical Germicidal Lamps from Nitride Semiconductor

LEDs for Medical Germicidal Lamps from Nitride Semiconductor

The inactivation of bacteria such as Escherichia coli and Staphylococcus aureus, influenza virus and norovirus has already been verified at the virus center of the Sendai Medical Center of the National Hospital Organization (Miyagino Ward, Sendai City). The company plans to test the system on a new type of corona within the next month. UV and mercury lamps are used as germicidal lamps in medical facilities. However, UV lamps have a short life span and are easily broken, and the Minamata Convention on Mercury, an international regulation, will ban the manufacture, import and export of mercury-based lighting from 2021. Against this background, the spread of high-output deep UV LEDs is expected in the future. Photo taken on March 30, 2020 (location unknown), credit: Nikkan Kogyo Shimbun / Kyodo News Images