(Helmholtz Association of German Research Centres) More than 120 years after the discovery of the electromagnetic character of radiowaves by Heinrich Hertz, wireless data transmission dominates information technology.
Higher and higher radio frequencies are applied to transmit more data. Some years ago, scientists found that light waves might also be used for radio transmission.
So far, manufacture of the small antennas has required an enormous expenditure. KIT scientists have now succeeded in specifically and reproducibly manufacturing smallest optical nanoantennas from gold.
light wavesSmallest nanoantennas for high-speed data networksEurekAlert! - Chemistry, Physics and Materials Sciences Mon, 10/19/2009 - 22:00
Physics: Interferometer Gets More Quiet MirrorsScienceDaily Fri, 05/29/2009 - 20:45
In physics many subtle phenomena can be studied by allowing waves to interfere with each other. In an interferometer, light waves travel by two different paths, directed from place to place by strategically places mirrors, and converge at a detector, where they produce a striped interference pattern. |