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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: How to Make a Tank Disappear
23 November 2011 12:36 pm
For several years, researchers have known that carbon nanotubes are one of the blackest known materials. These tiny scaffolds—which have a structure like rolled-up chicken wire—barely scatter light. Indeed, some believe the nanotubes are so black that they might make a new type of camouflage—one that conceals anything as a flat black blob. To test the idea, scientists etched a picture of a tank onto a silicon surface (inset). On its own, the three-dimensional object was clearly visible because light scattered and reflected off the tank's features, as it does with all everyday objects, black or otherwise. However, when the researchers coated the tank with nanotubes, the etching appeared to vanish, as though the surface was perfectly flat. Such camouflage, described in a paper published this week in Applied Physics Letters, wouldn't actually blend an object into its surroundings. But it would turn anything into a spooky silhouette, like a black cut-out.
See more ScienceShots.