The first Fresnel lens was installed in 1823 in the Cordouan lighthouse, where its beam was visible for 32 km. Since then, this lens design has been used in lighthouses, traffic lights, automobile headlights, magnifying glasses, ...
Optics & Photonics
Oct 5, 2012
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(Phys.org)—An exciting advance in solar cell technology developed at the University of Kansas has produced the world's most efficient photovoltaic cells made from nanocarbons, materials that have the potential to dramatically ...
Nanophysics
Sep 27, 2012
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Within optical microchips, light finds its way through channels, waveguides, made of silicon. Light from a glass fiber, for example, is led through a structure of optical channels with splitters and couplers. Silicon is the ...
Optics & Photonics
Sep 21, 2012
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In her PhD thesis, Montserrat Fernández-Vallejo, a telecommunications engineer and graduate of the UPNA-Public University of Navarre, has experimentally developed various fibre-optic sensor networks for the remote monitoring ...
Engineering
Sep 6, 2012
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(Phys.org)—By modifying the rate at which chemical reactions take place, nanoparticle catalysts fulfill myriad roles in industry, the biomedical arena and everyday life. They may be used for the production of polymers ...
Nanophysics
Aug 28, 2012
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Researchers at King's College London, in collaboration with European research institutes ICFO (Barcelona) and AMOLF (Amsterdam), have succeeded in mapping how light behaves in complex photonic materials inspired by nature, ...
Optics & Photonics
Aug 20, 2012
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Clemson researchers are taking common materials to uncommon places by transforming easily obtainable and affordable materials into fiber. Their findings are published in Nature Photonics, the world's top journal focused on ...
Optics & Photonics
Aug 13, 2012
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Center for Nanoscale Materials (CNM) users from the Ecole Polytechnique Federale de Lausanne in Switzerland, working with the Argonne National Laboratory's CNM Nanophotonics Group, have demonstrated the existence of long-lived ...
Nanophysics
Aug 9, 2012
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(Phys.org) -- A collaboration of physicists from Max Planck Institute of Quantum Optics, LMU, Harvard and Caltech detect Higgs-type excitations in a low-dimensional system of ultracold atoms at the transition between different ...
General Physics
Jul 25, 2012
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The amount of structural damage that radiation causes in electronic materials at the atomic level may be at least ten times greater than previously thought.
General Physics
Jul 20, 2012
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