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Home / News / Tags / metamaterials
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Stories about: metamaterials |
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Conventional lenses, no matter how powerful, are only able to magnify light to nearly half of the wavelength, or the so-called diffraction limit. This basically means that the dimensions of optical storing devices or the sizes of the features created on silicon chips are limited to how much focusing power a particula... |
25 April 2008
07:23 GMT |
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Metamaterials have the unique capability of experiencing negative refractive indexes, thus literally refracting light through themselves without reflecting any to the source, therefore making any object hidden behind it invisible. This is not available only for light, acoustic waves can be also manipulated in similar... |
1 April 2008
11:09 GMT |
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Metamaterials promise us optical and acoustic invisibility, even if, for now, such phenomenons are restricted to certain wavelengths and 2-dimensional use. Scientists now believe that, by using the electromagnetic properties of metamaterials, smaller resonating circuits can be produced (such as those generating micro... |
19 March 2008
06:26 GMT |
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For nanoparticles this time though. Researchers from the Carnegie Mellon University's Material Science and Engineering and Chemistry have succeeded in partially cloaking nanoparticles by 'shrinking' their visible size without affecting the physical dimension of the particle. The study was conducted by ... |
7 March 2008
04:07 GMT |
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The universe is a world of infinite possibilities. Well, at least theoretically. Theoretical physics predicts anything from parallel universes to time travel. But, as we came to find out, neither of these two concepts are really so easy to prove. Invisibility cloaks are not different. Although physicists clearly show... |
12 January 2008
06:29 GMT |
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Invisibility cloaks and ultra-fast computers could one day be powered by such an exotic device, however, multiple problems need to be solved before these crystals become useful. Several metamaterials have been designed over the years, but the technological process involved in building them presents multiple technolog... |
18 December 2007
08:57 GMT |
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Researchers studying the properties of metamaterials have found a way to lower the speed a beam of light is traveling at, by separating it in its constituent colors, creating some kind of a trapped rainbow. Light travels through space, at a speed of about 300,000 kilometers per second and is the maximum speed in the ... |
15 November 2007
06:28 GMT |
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'Wormholes' are mostly associated to black holes, and usually it denotes the possibility of time travel or space travel over great distances, at speeds that do not pass the speed of light, while passing through a singularity. Recently, Yaroslav Kurylev at the University College London in the UK, came up wit... |
10 November 2007
05:06 GMT |
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As evolved as humans are, the dominant species of this world has not evolved much, in terms of man-to-man combat, beyond the stone-throwing ability developed by our ape-like ancestors, around 4 million years ago.And since we still use bullets, a more evolved model of the basic stone, the Pentagon is searching for th... |
21 June 2007
10:29 GMT |
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