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6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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ScienceShot: Antenna Array Lights Up
9 January 2013 5:05 pm
A "phased array" of 4096 micrometer-sized antennas beam out an orange and red display of the logo of the Massachusetts Institute of Technology (MIT) in Cambridge. It's by far the biggest such array pumping out visible light, besting the previous record of 16 antennas. Engineers have also long used arrays of radio and microwave antennas working in concert, which have a better ability than individual antennas to direct their signals, in radar and satellite communications. They have dreamed of making phased arrays with visible light, which is electromagnetic radiation with a far shorter wavelength. MIT researchers used standard silicon chip fabrication technology and managed to overcome the difficulties of avoiding imperfections. Down the road, such jumbo optical arrays could be used to improve a variety of applications, including three-dimensional holographic data storage and biomedical imaging, the researchers suggest.
See more ScienceShots.