发信人: HigherQM2007 (高量哥的祖师爷 - 塞理斯), 信区: Pictures
标 题: 三位日本学者获得2014年诺贝尔物理学奖
发信站: 南京大学小百合站 (Tue Oct 7 18:19:47 2014)
2014年，赤崎勇凭借“高亮度蓝色发光二极管”的发明与天野浩、中村修二共同获得获得
诺贝尔物理学奖。
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”
New light to illuminate the world
This year’s Nobel Laureates are rewarded for having invented a new energy-
efficient and environment-friendly light source – the blue light-emitting
diode (LED). In the spirit of Alfred Nobel the Prize rewards an invention of
greatest benefit to mankind; using blue LEDs, white light can be created in a
new way. With the advent of LED lamps we now have more long-lasting and more
efficient alternatives to older light sources.
When Isamu Akasaki, Hiroshi Amano and Shuji Nakamura produced bright blue
light beams from their semi-conductors in the early 1990s, they triggered a
funda-mental transformation of lighting technology. Red and green diodes had
been around for a long time but without blue light, white lamps could not be
created. Despite considerable efforts, both in the scientific community and in
industry, the blue LED had remained a challenge for three decades.
They succeeded where everyone else had failed. Akasaki worked together with
Amano at the University of Nagoya, while Nakamura was employed at Nichia
Chemicals, a small company in Tokushima. Their inventions were revolutionary.
Incandescent light bulbs lit the 20th century; the 21st century will be lit by
LED lamps.
White LED lamps emit a bright white light, are long-lasting and energy-
efficient. They are constantly improved, getting more efficient with higher
luminous flux (measured in lumen) per unit electrical input power (measured in
watt). The most recent record is just over 300 lm/W, which can be compared to
16 for regular light bulbs and close to 70 for fluorescent lamps. As about
one fourth of world electricity consumption is used for lighting purposes, the
LEDs contribute to saving the Earth’s resources. Materials consumption is
also diminished as LEDs last up to 100,000 hours, compared to 1,000 for
incandescent bulbs and 10,000 hours for fluorescent lights.
The LED lamp holds great promise for increasing the quality of life for over 1
.5 billion people around the world who lack access to electricity grids: due
to low power requirements it can be powered by cheap local solar power.
The invention of the blue LED is just twenty years old, but it has already
contributed to create white light in an entirely new manner to the benefit of
us all.
--
※ 来源:．南京大学小百合站 http://bbs.nju.edu.cn [FROM: 114.212.238.103]
标 题: 三位日本学者获得2014年诺贝尔物理学奖
发信站: 南京大学小百合站 (Tue Oct 7 18:19:47 2014)
2014年，赤崎勇凭借“高亮度蓝色发光二极管”的发明与天野浩、中村修二共同获得获得
诺贝尔物理学奖。
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”
New light to illuminate the world
This year’s Nobel Laureates are rewarded for having invented a new energy-
efficient and environment-friendly light source – the blue light-emitting
diode (LED). In the spirit of Alfred Nobel the Prize rewards an invention of
greatest benefit to mankind; using blue LEDs, white light can be created in a
new way. With the advent of LED lamps we now have more long-lasting and more
efficient alternatives to older light sources.
When Isamu Akasaki, Hiroshi Amano and Shuji Nakamura produced bright blue
light beams from their semi-conductors in the early 1990s, they triggered a
funda-mental transformation of lighting technology. Red and green diodes had
been around for a long time but without blue light, white lamps could not be
created. Despite considerable efforts, both in the scientific community and in
industry, the blue LED had remained a challenge for three decades.
They succeeded where everyone else had failed. Akasaki worked together with
Amano at the University of Nagoya, while Nakamura was employed at Nichia
Chemicals, a small company in Tokushima. Their inventions were revolutionary.
Incandescent light bulbs lit the 20th century; the 21st century will be lit by
LED lamps.
White LED lamps emit a bright white light, are long-lasting and energy-
efficient. They are constantly improved, getting more efficient with higher
luminous flux (measured in lumen) per unit electrical input power (measured in
watt). The most recent record is just over 300 lm/W, which can be compared to
16 for regular light bulbs and close to 70 for fluorescent lamps. As about
one fourth of world electricity consumption is used for lighting purposes, the
LEDs contribute to saving the Earth’s resources. Materials consumption is
also diminished as LEDs last up to 100,000 hours, compared to 1,000 for
incandescent bulbs and 10,000 hours for fluorescent lights.
The LED lamp holds great promise for increasing the quality of life for over 1
.5 billion people around the world who lack access to electricity grids: due
to low power requirements it can be powered by cheap local solar power.
The invention of the blue LED is just twenty years old, but it has already
contributed to create white light in an entirely new manner to the benefit of
us all.
--
※ 来源:．南京大学小百合站 http://bbs.nju.edu.cn [FROM: 114.212.238.103]
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