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Rice researchers gain new insight into nanoscale optics
New research from Rice University has demonstrated an important analogy between electronics and optics that will enable light waves to be coupled efficiently to nanoscale structures and devices. view more (2005-09-15)
Physicists meet to discuss $170 million neutrinos project
Physicists from all over the world will meet this week at the University of Sussex to discuss the latest developments in a $170 million project called MINOS. view more (2002-09-09)
TU Delft demonstrates for the first time how light squeezes through small holes
How does light pass through a tiny hole" For the first time, Dr Aurele Adam and Prof. Paul Planken of Delft University of Technology, in conjunction with two South Korean and one German research groups, have succeeded in mapping this process properly. view more (2008-05-09)
How white is a paper?
Whiter paper and better color reproduction are examples of important competitive advantages on an international market. view more (2009-10-23)
High-tech textiles pave the way for glowing garments
Researchers at The University of Manchester have developed high-tech battery-powered textile yarns that can be used to make clothing glow in the dark. view more (2007-10-29)
Internal Clock, External Light Regulate Plant Growth
Most plants and animals show changes in activity over a 24-hour cycle. Now, for the first time, researchers have shown how a plant combines signals from its internal clock with those from the environment to show a daily rhythm of growth. view more (2007-07-10)
Light-activated compound silences nerves, may one day help epileptics
Brain activity has been compared to a light bulb turning on in the head. Scientists at Washington University School of Medicine in St. Louis have reversed this notion, creating a drug that stops brain activity when a light shines on it. view more (2007-03-07)
Constant sunlight linked to summer suicide spike
Suicide rates in Greenland increase during the summer, peaking in June. Researchers writing in the open access journal BMC Psychiatry speculate that insomnia caused by incessant daylight may be to blame. view more (2009-05-08)
Hard shell, glowing core
Tiny semiconductor crystals can be prompted to give off light - brighter than conventional dyes and in wavelength ranges that these only produce under certain conditions. Israeli chemist Uri Banin and his coworker Yun-Wie Cao demonstrated this with several core/shell nanocrystals made of the semiconductor indium arsenide. It has been known for... view more... (1999-12-09)
Laser experiments reveal strange properties of superfluids
Princeton University electrical engineers are using lasers to shed light on the behavior of superfluids - strange, frictionless liquids that are difficult to create and study. view more (2006-12-26)
Owls' dawn and dusk concerts promote visual communication
Reporting in the online, open-access journal PLoS ONE April 8, Vincenzo Penteriani and Maria Delgado of the Estacion Biologica de Doñana, Spain, describe the evolution of white throat badges in association with dawn and dusk vocal signals in certain species of nocturnal bird, which maximise the potential for these species to communicate... view more... (2009-04-08)
New Research could benefit drivers who are sensitive to night-time glare conditions
A new technique to measure the effect of bright light on the human eye could result in safer and more user-friendly lighting conditions. The technique, which records the electrical activity of a major muscle surrounding the eye, opens the way to measuring the discomfort of the eye in conditions of changing light. This could have important... view more... (2001-09-26)
New study: Why solar cells lose potency
Commercial products such as laptop computer monitors and solar-powered calculators are constructed from a light-sensitive material with a peculiar problem: When exposed to intense light, it forms defects, reducing the efficiency of the solar cells by 10 to 15 percent. view more (2005-06-20)
Structuring polymers by laser
Microstructured polymer components are often used to direct light in optical devices. As an alternative to mechanical processes, laser light can also be used to produce the microscopic relief structures, and even to remove them without contact. With a flash of blue-green light, the show begins. Like a line of silent ballet dancers, long-chain... view more... (2004-05-14)
Scientists break light modulation speed record -- twice
Researchers have constructed a light-emitting transistor that has set a new record with a signal-processing modulation speed of 4.3 gigahertz, breaking the previous record of 1.7 gigahertz held by a light-emitting diode. view more (2009-06-16)
Investigation of changes in properties of water under the action of a magnetic field
Professor Pang Xiao-Feng and Deng Bo studied the properties of water, and their changes under the action of a magnetic field were gathered by the spectrum techniques of infrared, Raman, visible, ultraviolet and X-ray lights, which may give an insight into molecular and atomic structures of water. view more (2008-10-27)
Small optical force can budge nanoscale objects
With a bit of leverage, Cornell researchers have used a very tiny beam of light with as little as 1 milliwatt of power to move a silicon structure up to 12 nanometers. That's enough to completely switch the optical properties of the structure from opaque to transparent, they reported. view more (2009-11-18)
U of MN study finds health education helps African American light smokers kick the habit
The first clinical trial to focus on light smokers shows that African Americans are motivated to quit more by completing health education than by using nicotine gum. view more (2006-05-31)
Viagra®, unlikely tool for vision research, slows the visual response to flickering light
Therapeutic doses of Viagra® have been shown to influence the rate at which visual signals are integrated by the brain, affecting the way quick, repeated events, such as flickering light, are perceived. view more (2006-01-24)
Making monster waves
Rogue waves-giant waves that spring up suddenly and tower over the seas around them-have inspired physicists to look for an analogue in light. view more (2009-10-20)
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