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Letting go with lasers
Letting go lasers
2015/7/13
Small objects tend to cling to everything. It's why parents dread hosting parties that involve confetti. It's why glitter is fun for crafts--until it finds its way onto everything else you touch.When ...
Combing frequencies
Combing frequencies
2015/7/13
It almost sounds like a riddle: What tool has transformed basic scientific research and led to new technologies in so many different fields--timekeeping, medical research, communications, remote sensi...
A human skull, on average, is about 0.3 inches thick, or roughly the depth of the latest smartphone. Human skin, on the other hand, is about 0.1 inches, or about three grains of salt, deep.While these...
On the road to ubiquity（图）
the road ubiquity
2015/7/13
When the National Science Foundation (NSF) was founded in 1950, the laser didn't exist. Some 65 years later, the technology is ubiquitous.As a tool, the laser has stretched the imaginations of countle...
Researchers from Lehigh University, Japan and Canada have advanced a step closer to the dream of all-optical data transmission by building and demonstrating what they call the “world’s first fully fun...
World’s smallest spirals could guard against identity theft（图）
smallest spirals guard against identity theft
2015/6/18
Take gold spirals about the size of a dime…and shrink them down about six million times. The result is the world’s smallest continuous spirals: “nano-spirals” with unique optical properties that would...
俄罗斯学者研制出检测火车轮对状况激光器
俄罗斯 火车轮 激光器
2015/5/21
据贝加尔湖科技网站2015年月7日报道，俄罗斯科学院热物理研究所、自动化与测电学研究所科研人员经过20年研究工业过程光-信息诊断系统，研制出检测火车轮对安全的激光系统。
Penn Researchers Develop Liquid-crystal-based Compound Lenses That Work Like Insect Eyes
Penn Researchers Liquid-crystal-based Compound Lenses Work Like Insect Eyes
2015/5/25
The compound eyes found in insects and some sea creatures are marvels of evolution. There, thousands of lenses work together to provide sophisticated information without the need for a sophisticated b...
Fermions are the building blocks of matter, interacting in a multitude of permutations to give rise to the elements of the periodic table. Without fermions, the physical world would not exist.Examples...
俄罗斯计划五年内研制出世界上最大功率的激光器
激光器 高能物理领域
2015/5/15
俄罗斯将在五年内研制出世界上功率最大的新一代激光器УФЛ-2М。该激光器将主要用于高能物理领域的基础研究，目前坐落于俄罗斯萨洛夫科技园，占地面积约两个足球场大小，有十层楼高，设计的发射能量为460万焦耳，而相比之下，美国和法国有类似的激光器，其能量都不超过200万焦耳。
Northwestern Scientists Develop First Liquid Nanolaser
Northwestern Scientists First Liquid Nanolaser
2015/4/30
Northwestern University scientists have developed the first liquid nanoscale laser. And it’s tunable in real time, meaning you can quickly and simply produce different colors, a unique and useful feat...
Spotlight on light
Spotlight on light
2015/3/4
The United Nations' International Year of Light was launched in the City of Light (Paris, France) on Monday, and National Science Foundation (NSF) Director France Córdova was there to illumi...
“分区供电法”可大幅提高激光器效率
分区供电法 激光器效率
2014/11/25
激光与现代社会密不可分，从CD播放器到军用武器装备，随处都能看到激光的身影，但对大型装备而言，能量易损、效率不高却是人们不得不面对的一个问题。据物理学家组织网近日报道，美国普林斯顿大学的科学家发现，通过精心设计激光器内的能量传递区域，可解决这一问题，大幅提高其发光效率。他们开发出一种数学方法来优化电能传递模式，并让激光的效率获得数倍的提升。借助该技术有望生产出灵敏度更高、耗电更少的激光器。相关论文...
Observing the quantum behavior of light is a big part of Alan Migdall’s research at the Joint Quantum Institute. Many of his experiments depend on observing light in the form of photons---the particl...
Atomically thin material opens door for integrated nanophotonic circuits（图）
material opens door nanophotonic circuits
2014/9/12
Researchers at the University of Rochester describe a new combination of materials that could be a step towards building computer chips capable of transporting digital information at the speed of ligh...