Light Refraction Current Events | Light Refraction News
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Perfect image without metamaterials ... and a reprieve for silicon chips
Since 2000, John Pendry's work on metamaterials has been at the van guard of efforts to create a perfect image - images with perfect resolution that can stem from light being moved in odd directions to create, among other tricks of the light, the illusion of invisibility. view more (2009-09-29)
Purdue 'metamaterial' could lead to better optics, communications
Engineers at Purdue University are the first researchers to create a material that has a "negative index of refraction" in the wavelength of light used for telecommunications, a step that could lead to better communications and imaging technologies. view more (2005-12-01)
Novel semiconductor structure bends light 'wrong' way -- the right direction for many applications
A Princeton-led research team has created an easy-to-produce material from the stuff of computer chips that has the rare ability to bend light in the opposite direction from all naturally occurring materials. view more (2007-10-15)
New metamaterials that bend light backwards bring invisibility cloaks 1 step closer
Scientists at the University of California, Berkeley, have for the first time engineered 3-D materials that can reverse the natural direction of visible and near-infrared light, a development that could help form the basis for higher resolution optical imaging, nanocircuits for high-powered computers, and, to the delight of science-fiction and... view more... (2008-08-11)
Reversing and accelerating the speed of light
Physicist Costas Soukoulis and his research group at the U.S. Department of Energy's Ames Laboratory on the Iowa State University campus are having the time of their lives making light travel backwards at negative speeds that appear faster than the speed of light. view more (2006-07-24)
Sound Filters Light
Russian researchers have developed a small, smart and tolerant to vibrations spectrometer, which is equally reliable in the outer space and in oceanic depths. The development was performed with financial support from the Russian Foundation for Basic Research (RFBR) and the Foundation for Assistance to Small Innovative Enterprises (FASIE). The... view more... (2004-11-01)
New 'broadband' cloaking technology simple to manufacture
Researchers have created a new type of invisibility cloak that is simpler than previous designs and works for all colors of the visible spectrum, making it possible to cloak larger objects than before and possibly leading to practical applications in "transformation optics." view more (2009-05-21)
Mathematicians find way to improve medical scans
Mathematicians at the University of Liverpool have found that it is possible to gain full control of sound waves which could lead to improved medical scans, for technology such as ultra sound machines. view more (2008-01-08)
Novel nano-etched cavity makes leds 7 times brighter
Researchers at the National Institute of Standards and Technology (NIST) have made semiconductor light-emitting diodes (LEDs) more than seven times brighter by etching nanoscale grooves in a surrounding cavity to guide scattered light in one direction. view more (2006-07-24)
New research field promises radical advances in optical technologies
A new research field called transformation optics may usher in a host of radical advances including a cloak of invisibility and ultra-powerful microscopes and computers by harnessing nanotechnology and "metamaterials." view more (2008-10-17)
Engineers create 'optical cloaking' design for invisibility
Researchers using nanotechnology have taken a step toward creating an "optical cloaking" device that could render objects invisible by guiding light around anything placed inside this "cloak." view more (2007-04-03)
The guiding of light: A new metamaterial device steers beams along complex pathways
Using a composite metamaterial to deliver a complex set of instructions to a beam of light, Boston College physicists have created a device to guide electromagnetic waves around objects such as the corner of a building or the profile of the eastern seaboard. view more (2009-08-03)
New infrared tool measures silicon wafer thickness
In the last few years, semiconductor circuit features have shrunk to sub-100 nanometer (nm) dimensions, while the size of the thin silicon wafers that these circuits are constructed on has grown from 200 millimeters (mm) to 300 mm (about 12 inches). The payoff is a higher yield of finished devices from fewer wafers. view more (2005-07-15)
Holograms make for better vision tests
A new paper published in the July 1 issue of OSA's Optics Letters shows that researchers in Australia have created a new one-step test that uses holograms to diagnose the astigmatic error of the human eye, a key measurement in determining the appropriate prescriptions for eye glasses in patients. view more (2007-07-09)
Beyond the looking glass
While the researchers can't promise delivery to a parallel universe or a school for wizards, books like Pullman's Dark Materials and JK Rowling's Harry Potter are steps closer to reality now that researchers in China have created the first tunable electromagnetic gateway. view more (2009-08-13)
Forecast: Showers and thunderstorms
People planning baseball games, picnics, and other outdoor events may have more precise short-term forecasts of rainfall in the next few years, thanks to an observing strategy now being tested by atmospheric scientists at the National Center for Atmospheric Research (NCAR) in Boulder, Colo. view more (2006-08-02)
When proteins, antibodies and other biological molecules kiss, a new kind of biosensor can tell
When biological molecules kiss, a new kind of biosensor can tell. A new and deceptively simple technique has been developed by chemists at Vanderbilt University that can measure the interactions between free-floating, unlabeled biological molecules including proteins, sugars, antibodies, DNA and RNA. view more (2007-09-21)
Physics World Digest: August 2002 edition
Physicists see eye to eye with opthamologists Glaucoma is one of the leading causes of blindness in adults - yet over half of us who have the disease do not realise that we are suffering from the condition. While the disease can be treated if caught soon enough, early diagnosis relies on regular screening programmes that can be expensive and... view more... (2002-08-01)
Study suggests simple way to make near-perfect lenses
A new study from the University of Edinburgh and Pennsylvania State University suggests a smart solution to one of the biggest challenges facing the optics and electromagnetics sector - how to produce near-perfect lenses cheaply. view more (2005-09-08)
Metamaterials with new electromagnetic properties
The development of new types of artificial materials, known as "metamaterials" and with electromagnetic properties not found in nature, is the aim of the Metamorphose Excellence European Network, of which the Public University of Navarre forms part, together with twenty-one other research institutions from 13 European countries. view more (2004-03-25)
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