2014年10月24日金曜日

青色LEDとノーベル物理学賞

青色LED開発の功績が評価され
赤崎勇教授、天野浩教授、中村修二教授の3名
2014年ノーベル物理学賞を受賞



関連する英文記事を読みました。

この分野に興味のある方は、単語だけでも拾い読みされてはいかがでしょうか。

POPULAR SCIENCE: Why A Blue LED Is Worth A Nobel Prize
http://www.popsci.com/article/technology/why-blue-led-worth-nobel-prize


”Three scientists have jointly earned the Nobel Prize in physics for their work on blue LEDs, or light-emitting diodes."

physics = 物理学
LED = light emitting diode = 発光ダイオード
emit = (光を)放つ


"LEDs are basically semiconductors that have been built so they emit light when they're activated. Different chemicals give different LEDs their colors."

semiconductors = 半導体
emit = (光を)放つ
activate = 活性化する

LEDチップに使われる化合物の種類によって、発光する色が決まるそうです。
青色LEDにはGa(ガリウム)の化合物が使われているそうです。

gallium nitride = ガリウムナイトライド、窒化ガリウム 、GaN


"LEDs also last up to 100,000 hours, compared to 10,000 hours for fluorescent lights and 1,000 hours for incandescent bulbs. Switching more houses and buildings over to LEDs could significantly reduce the world's electricity and materials consumption for lighting."

last = 持続する
up to ~ = ~まで
compared to ~  = ~と比べて
fluorescent lights = 蛍光灯
incandescent bulbs = 白熱灯
consumption = 消費


”In the future, engineers may make white LEDs by combining red, green, and blue ones"


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Panasonic: LEDの発光原理
http://www2.panasonic.biz/es/lighting/led/led/principle/

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スウェーデンの王立科学アカデミーのプレスリリース
http://www.nobelprize.org/nobel_prizes/physics/laureates/2014/press.html

The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics for 2014 to

Isamu Akasaki
Meijo University, Nagoya, Japan and Nagoya University, Japan

Hiroshi Amano
Nagoya University, Japan

and

Shuji Nakamura
University of California, Santa Barbara, CA, USA

“for the invention of efficient blue light-emitting diodes which has enabled bright and energy-saving white light sources”