Nobel Physics Goes to LED Lights

Japan’s Isamu Akasaki and Hiroshi Amano and American scientist Shuji Nakamura won the Nobel Prize in Physics on Tuesday for the invention of blue-light-emitting diodes, an important discovery that enabled the development of LED technology used to illuminate Computer and modern smartphones. The Royal Swedish Academy of Sciences says the invention is only 20 years old, but “it has already contributed to creating white light in a whole new way for the benefit of all.”

Scientists had been trying for decades to produce blue diodes, which are a crucial component in LED white light production, when the three laureates arrived in the early 1990s. The trio’s work transformed lighting technology, paving the way for LED lights that last longer and are more energy efficient than old sources of light. “They succeeded where everyone else failed,” the Nobel committee said. “Incandescent lamps lit the 20th century; the 21st century will be lit by LED lamps.”

Akasaki, 85, is a professor at Meijo University and professor emeritus at Nagoya University. Amano, 54, is also a professor at Nagoya University, while 60-year-old Nakamura, a Japanese-born teacher, teaches at the University of California, Santa Barbara. Akasaki told a news conference broadcast throughout Japan that he used to hear that his research would not bear fruit in the 20th century. “But I never found it,” he said. “I was doing what I wanted to do.”

Akasaki and Amano created the diodes while working at Nagoya University while Nakamura worked separately at the Japanese company Nichia Chemicals. They built their own equipment and performed thousands of experiments, many of which failed, before they made the breakthrough.

In a statement released by his university, Nakamura said he was honored to receive the award. “It is very gratifying to see that my dream of LED light has come true,” he said. “I hope LED lamps, with their energy efficiency, help reduce energy consumption and reduce their costs around the world.”

The Nobel committee said LED contributes to preserving natural resources because about a quarter of the world’s electricity consumption goes to lighting. These lamps are more efficient than other light sources and tend to last ten times longer than fluorescent bulbs and 100 times longer than an incandescent bulb, the committee said. Associated Press.