This year's Nobel Prize in Physics was awarded to three scientists in Japan, Isamu Akasaki, Hiroshi Amano and Shuji Nakamura, the inventor of high-brightness blue LED, it is renewed interest in LED technology. Professor of Engineering, Department of Electrical and Computer LIU Ji HKUST US in semiconductor research for many years, she pointed out, LED is a semiconductor electronic components capable of emitting light, early 1962 has emerged, but the early low-luminosity red hair only, second person until Nakamura developed a blue LED, and combining green and red LED, produce seemingly white light.
However, because of the traditional 60W incandescent light and compact fluorescent lamps are cheaper, very common in the market, but the heat generated more electricity consumption is higher. LIU Ji beauty and LED lighting company CLEDoS founder Wang Zhi Kang cooperation, develop new LED bulb (airLED), can be issued only 8W 60W tungsten or 14W equivalent CFLs of eight hundred lumens of light traffic, thus reducing the eight to nine into electricity.
Average per kWh 0.9 3D Calculation our daily open four hours of continuous 60W incandescent light, the annual electricity bill of around eighty-two yuan; new LED bulbs because only 8W, so even if the same continuous open four hours a day , the annual electricity only about 11 yuan. Although the new LED bulbs cost about 55 yuan, compared with tungsten and CFLs high, but life for ten years.
LIU Ji said the United States, nearly two years of research and development of new LED bulbs, compared with tungsten, so that "three lows and one without" effects, including low weight, low-calorie, low volume and no mercury, "We use the standard mode of the lamp, but light body with plastic instead of metal, and with astigmatism cover, so that the new bulb uses both direct current, while the air as a heat tool, do the weight, the more calories and volume three tungsten low. "
Looking to the future, Liu said that in recent years, mobile phones and other mobile devices is very common, are now conducting research intelligent control bulbs, Hebei in the future be able to use mobile devices control switch.
In addition to the scientific invention, Liu also lead students to make microelectronics, and has developed to a very advanced stage, can be used to play micro-film, currently awaiting interested manufacturers for further development.
