By using an ordinary green laser pointer, the kind commonly found in offices and college lecture halls, an Israeli research team has developed a new and highly portable Raman spectrometer that can detect extremely minute ...
Optics & Photonics
Oct 10, 2012
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A metal object can be made invisible with the help of ordinary plastic, Pekka Alitalo and Constantinos Valagiannopoulos, researchers from the School of Electrical Engineering, have shown in their study.
General Physics
Oct 2, 2012
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(Phys.org) -- A child's dream wanting to come true: putting on a magic cape to see around corners and through walls, solving mysteries and catching criminals. Scientists, meanwhile, are achieving the same optical powers with ...
(Phys.org) -- Polarized light is a familiar phenomenon, as people who prefer polarized sunglasses can testify. The electric field in a beam of light can vibrate either left-right or up-down, and the scattering or reflection ...
Astronomy
Apr 9, 2012
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Fifteen small sundew plants perch on a window sill, collecting sunlight and eating meat in the lab of Mingjun Zhang on the University of Tennessee's Knoxville campus. Sundew plants are carnivores, consuming insects by capturing ...
Bio & Medicine
Oct 18, 2011
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After demonstrating that light accurately detected pre-cancerous cells in the lining of the esophagus, Duke University bioengineers turned their technology to the colon and have achieved similar results in a series of preliminary ...
Biochemistry
Oct 11, 2011
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Lawrence Livermore National Laboratory researchers may have found a way to improve Raman spectroscopy as a tool for identifying substances in extremely low concentrations. Potential applications for Raman spectroscopy include ...
Nanophysics
Nov 9, 2010
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Scientists at the European Molecular Biology Laboratory have captured fruit fly development on film, creating the Fly Digital Embryo. In work published today in Nature Methods, they were also the first to clearly record how ...
Cell & Microbiology
Jul 5, 2010
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(PhysOrg.com) -- Scientists can detect the movements of single molecules by using fluorescent tags or by pulling them in delicate force measurements, but only for a few minutes. A new technique by Rice University researchers ...
Nanophysics
Jun 22, 2010
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(PhysOrg.com) -- Getting robotic systems to accurately detect both moving and static objects remains an obstacle to building more autonomous robots and more advanced surveillance systems. Innovative technology that uses light ...
Engineering
Apr 9, 2010
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