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News
When graphene meets negative refraction Mar 2
Graphene and negative refractive-index materials are two of the hottest topics in physics -- but one might not think they have much in common. Now, however, physicists in the UK and US have proposed that graphene could be used to make a tiny lens to focus electrons through negative refraction. Although the lens has not yet been made, it could someday be used to focus electrons with much more precision than existing electron lenses (Science 315 5816 ).
Model puts new spin on hurricane prediction Mar 2
Physicists in the US have got to grips with a phenomenon that can cause hurricane winds to intensify rapidly. So-called "eyewall replacement" occurs when the cloud wall encircling the eye of a major hurricane breaks down, only to be replaced by a new wall farther out. The physicists claim that this latest insight will help to predict when and to what extent hurricanes will intensify (Science 315 1235).
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