(Phys.org) —Carbon nanotubes carry plasmonic signals in the terahertz range of the electromagnetic spectrum, but only if they're metallic by nature or doped.
Nanomaterials
Dec 9, 2013
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The submillimeter wave, or terahertz, part of the electromagnetic spectrum falls between the frequencies of 0.3 and 3 terahertz, between microwaves and infrared light. Historically, device physics has prevented traditional ...
General Physics
Nov 22, 2013
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Terahertz radiation has many applications—but high intensity terahertz radiation sources are hard to build. A team of researchers at TU Vienna has now managed to create a new kind of quantum cascade laser with an output ...
Optics & Photonics
Oct 30, 2013
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Research into a new type of laser will dramatically improve future devices used for sensing and in communications, according to scientists at the University.
Optics & Photonics
Oct 28, 2013
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Graphene is considered the jack-of-all-trades of materials science: The two-dimensional honeycomb-shaped lattice made up of carbon atoms is stronger than steel and exhibits extremely high charge carrier mobilities. It is ...
Nanomaterials
Oct 25, 2013
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Terahertz (THz) radiation—radiation in the wavelength range of 30 to 300 microns—is gaining attention due to its applications in security screening, medical and industrial imaging, agricultural inspection, astronomical ...
General Physics
Oct 9, 2013
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Since the first quantum cascade (QC) laser was demonstrated in 1994 and implemented in THz regime in 2002, they have become one of the most important solid state light sources in this frequency range. The metal-metal (MM) ...
Optics & Photonics
Oct 3, 2013
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A terahertz laser developed at the Paul Scherrer Institute makes it possible to control a material's magnetisation at a timescale of picoseconds. In their experiment, the researchers shone extremely short light pulses from ...
Optics & Photonics
Aug 12, 2013
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Molecules could soon be "scanned" in a fashion similar to imaging screenings at airports, thanks to a detector developed by University of Pittsburgh physicists.
General Physics
Aug 6, 2013
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TU Vienna has managed to turn the oscillation direction of beams of light – simply by applying an electrical current to a special material. This way, a transistor can be built that functions with light instead of electrical ...
General Physics
Jul 8, 2013
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