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Latest Terahertz radiation Stories

2012-04-16 22:14:06

Is it drugs, medicines or explosives? At the Analytica trade fair, Fraunhofer researchers, joined by the Hübner Company, are presenting a terahertz spectrometer that provides reliable, contact-free identification of substances. Security forces intercept a letter bomb addressed to Josef Ackermann, the head of Deutsche Bank. At almost the same moment, a letter bomb explodes in an office in Rome. The hand of the manager in charge of Equitalia, the tax-collection authority, was...

2012-03-29 02:31:56

A team of physicists at UC Santa Barbara has seen the light, and it comes in many different colors. By aiming high- and low-frequency laser beams at a semiconductor, the researchers caused electrons to be ripped from their cores, accelerated, and then smashed back into the cores they left behind. This recollision produced multiple frequencies of light simultaneously. "This is a very remarkable phenomenon. I have never seen anything like this before," said Mark Sherwin, whose research group...

Move Over GHz, Terahertz Bandwidth Could Make Smartphones 1,000 Times Faster
2012-03-09 04:47:31

Peter Suciu for RedOrbit.com While those Verizon and AT&T commercials may claim that the respective carrier has the “fastest” network for mobile phones, new communications technology could make today´s 3G and 4G networks look as antiquated as the telegram. The whole gigahertz frequency could be made obsolete as a team of researchers at the University of Pittsburgh look to develop a terahertz frequency that could provide a means of transmitting data thousands of...

2012-01-31 09:07:58

Terahertz polarizer nears perfection Researchers at Rice University are using carbon nanotubes as the critical component of a robust terahertz polarizer that could accelerate the development of new security and communication devices, sensors and non-invasive medical imaging systems as well as fundamental studies of low-dimensional condensed matter systems. The polarizer developed by the Rice lab of Junichiro Kono, a professor of electrical and computer engineering and of physics and...

2012-01-21 00:16:29

Scientists have developed a new way to create electromagnetic Terahertz (THz) waves or T-rays - the technology behind full-body security scanners. The researchers behind the study, published recently in the journal Nature Photonics, say their new stronger and more efficient continuous wave T-rays could be used to make better medical scanning gadgets and may one day lead to innovations similar to the 'tricorder' scanner used in Star Trek. In the study, researchers from the Institute of...

2011-12-21 13:08:58

We may be able to see through glass, water and air, but not packing paper, plastic or cardboard. What remains hidden from the human eye is made visible by a new millimeter-wave sensor: unlike x-ray scanners, it can see through non-transparent materials without sending out harmful rays. Has the packet been properly filled? Are there impurities in the chocolate? Have the plastic seams been welded correctly? Is there a knife hidden in the parcel? Answers to all these questions are provided by...

Terahertz Pulse Increases Electron Density 1,000-fold
2011-12-20 09:12:48

Findings point to advances in transistor and solar cell development Researchers at Kyoto University have announced a breakthrough with broad implications for semiconductor-based devices. The findings, announced in the December 20 issue of the journal Nature Communications, may lead to the development of ultra-high-speed transistors and high-efficiency photovoltaic cells. Working with standard semiconductor material (gallium arsenide, GaAs), the team observed that exposing the sample to...

2011-10-03 13:54:42

Researchers at Northwestern University have developed a simpler way to generate single-chip terahertz radiation, a discovery that could soon allow for more rapid security screening, border protection, high sensitivity biological/chemical analysis, agricultural inspection, and astronomical applications. The work, headed by Manijeh Razeghi, Walter P. Murphy Professor of Electrical Engineering and Computer Science in the McCormick School of Engineering and Applied Science, was published...

2011-09-13 12:57:20

Terahertz (THz) technologies show promise for myriad medical, military, security, and research applications ranging from the detection of cancer to airport security systems to shipment inspection to spectroscopy. Relatively little is known, however, about the effect of THz radiation on biological systems. So a team of researchers, led by Los Alamos National Laboratory, evaluated the cellular response of mouse stem cells exposed to THz radiation. They applied low-power radiation both from a...

2011-09-12 20:03:06

Researchers from the University of Notre Dame in Indiana have harnessed another one of graphene´s remarkable properties to better control a relatively untamed portion of the electromagnetic spectrum: the terahertz band. Terahertz radiation offers tantalizing new opportunities in communications, medical imaging, and chemical detection. Straddling the transition between the highest energy radio waves and the lowest energy infrared light, terahertz waves are notoriously difficult to...