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First tunable, 'noiseless' amplifier may boost quantum computing, communications
Researchers at the National Institute of Standards and Technology (NIST) and JILA, a joint institute of NIST and the University of Colorado (CU) at Boulder, have made the first tunable "noiseless" amplifier. view more (2008-10-16)
McGill researchers squeeze light out of quantum dots
McGill University researchers have successfully amplified light with so-called "colloidal quantum dots," a technology that had been written off by many as a dead-end. view more (2009-04-03)
Researchers create a broadband light amplifier on a chip
Cornell researchers have created a broadband light amplifier on a silicon chip, a major breakthrough in the quest to create photonic microchips. In such microchips, beams of light traveling through microscopic waveguides will replace electric currents traveling through microscopic wires. view more (2006-07-07)
Patent application for first ever coloured-light laser
Physicists at the University of Bonn have applied to patent a laser capable of producing almost every colour, from infrared through the entire visible spectrum to the UV range - and this is done not with high-cost optical crystals, but with the aid of a simple glass fibre. The new laser could bring huge benefits, especially in the field of medical... view more... (2003-08-21)
Scientists design a tool for detection of rogue molecules “on the run”
A research group of the Microtechnology Centre at Chalmers, MC2, at Chalmers University of Technology in Göteborg, Sweden, has developed an ultra-sensitive device for detecting the presence of organic molecules present in space. Organic material as far away from us as many thousands of light years can be discovered this way. The sensor, which... view more... (2002-04-16)
Software-defined radio simplifies mobile phones
Mobile phones are getting more and more complicated. One reason is that a new radio is needed for each standard-GSM, 3G, and WLAN. A simpler solution, a radio that can be programmed to cover all standards, is now being developed at the Stringent Research Center at Linköping University in Sweden. "We have come up with three concepts... view more... (2004-04-19)
New process builds electronic function into optical fiber
Optical fiber helped bring us the Internet, and silicon/germanium devices brought us microelectronics. view more (2006-03-17)
Turning sound into light
Actors who perform in musicals often sweat in torrents when they have to zap around the stage on roller-skates or sing a ballad under a burning spotlight, dressed in bearskin. To allow the audience to hear them clearly, the artists wear cleverly hidden microphones underneath their make-up and costume. But as soon they break into a sweat, the... view more... (2003-09-18)
Researchers demonstrate single molecule absorption spectroscopy
A powerful new tool for probing molecular structure on surfaces has been developed by researchers at the University of Illinois at Urbana-Champaign. view more (2005-12-21)
Superconducting sensor helps detecting gravitation waves
To be able to detect gravitation waves in space, physicist have to measure truly minimal displacements: ten billion times smaller than the size of an atom. An improved superconducting sensor is a suitable candidate for this job, Martin Podt of the University of Twente now states in his PhD thesis. He has improved the sensitivity of a so-called... view more... (2003-01-15)
Ambient light influences the evolution of colour signals
In light-contrasted ecosystems, ambient light and background colours influence the evolution of animal coloration. Because maximal conspicuousness is achieved for signals which are rich in the colours of ambient light but poorly reflected by background, different signals will be cryptic or conspicuous at different heights in tropical rainforest.... view more... (2004-03-18)
UCLA study finds brain response differences in the way women with IBS anticipate and react to pain
UCLA researchers found that women with IBS cannot effectively turn-off a pain modulation mechanism in the brain, which causes them to be more sensitive to abdominal pain, compared to women without IBS. view more (2008-01-09)
IL-21 receptor plays an essential role in the Th2 immune response
During the immune response cells known as Th2 cells express a variety of cytokines (e.g. interleukin-4, -5, and -13), many of which stimulate B cells to proliferate and produce antibodies. view more (2006-06-16)
Synthetic Gene Circuit Allows Precise Dosing of Gene Expression
Researchers have crafted a gene circuit that permits precise tuning of a gene's expression in a cell, an advance that should allow for more accurate analysis of the gene's role in normal and abnormal cellular function. view more (2009-03-11)
New light detector
A novel prototype light meter has been developed by researchers in New York. Published today in the Institute of Physics journal, Measurement Science and Technology, this new retinal flux density meter will provide an affordable tool for measuring light at all levels and might ultimately lead to new standards to improve both energy efficiency and... view more... (2002-04-30)
New materials for high efficiency organic solid state lighting
A new organic molecule developed by Pacific Northwest National Laboratory scientists may significantly improve the efficiency of organic solid state lighting. Direct conversion of electricity to light in "solid state" thin films of organic molecules occurs in organic light emitting devices which can be far more efficient than... view more... (2006-03-30)
Through a light, darkly
A British physicist has come up with a way to reveal the shifting and shining colours that form in the dark spots where light waves interfere with each other. The patterns await experimental demonstration but computer-generated images are already illuminating new aspects of light that had until now remained in the shadows. When two waves meet... view more... (2002-10-18)
Bright light therapy eases bipolar depression for some
Bright light therapy can ease bipolar depression in some patients, according to a study published in the journal Bipolar Disorders. view more (2008-01-04)
Squid 'sight': Not just through eyes
It's hard to miss the huge eye of a squid. But now it appears that certain squids can detect light through an organ other than their eyes as well. view more (2009-06-02)
Prize-winner emerges from the shadows
How can you measure the brightness of light? A book which examines the answers to this seemingly simple question has just won the 2003 Paul Bunge Award, the world's largest prize for research in the history of scientific instruments. The book, published in 2001 by Institute of Physics Publishing, is "A History of Light and Colour Measurement:... view more... (2003-11-04)
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