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News articles about "Ultraviolet"

Global warming caused by CFCs, not carbon dioxide, researcher claims in controversial study

Carbon, Global warming, Carbon dioxide, Carbon dioxide, Global warming, carbon
Chlorofluorocarbons CFCs are to blame for global warming since the 1970s and not carbon dioxide according to a researcher from the University of Waterloo in a controversial new study published in the International Journal of ... - Read More

Scientists capture first images of molecules before and after reaction

molecules
Every chemist's dream to snap an atomic scale picture of a chemical before and after it reacts has now come true thanks to a new technique developed by chemists and physicists at the University of ... - Read More

Organic polymers show sunny potential: Groundwork laid for block copolymer solar cells

cells, cells
A new version of solar cells created by laboratories at Rice and Pennsylvania State universities could open the door to research on a new class of solar energy devices The photovoltaic devices created in a ... - Read More

Microwave oven cooks up solar cell material

Microwave
University of Utah metallurgists used an old microwave oven to produce a nanocrystal semiconductor rapidly using cheap abundant and less toxic metals than other semiconductors They hope it will be used for more efficient photovoltaic ... - Read More

Microelectronics: Taking the heat off microfluidic chips

Replacing a high temperature processing technique with an infrared treatment allows the manufacture of tiny devices without damaging the polymer components Share This See Also Microarrays Chemistry Inorganic Chemistry Artificial Intelligence Mobile Computing Information Technology ... - Read More

Comparing proteins at a glance: Technique for easy comparisons of proteins in solution

Proteins, Proteins, proteins
A revolutionary X ray analytical technique that enables researchers at a glance to identify structural similarities and differences between multiple proteins under a variety of conditions has been developed by researchers with the U S ... - Read More

Rethinking early atmospheric oxygen: Possibility of more dynamic biological oxygen cycle on early Earth than previously supposed

Oxygen, Oxygen, oxygen
A research team of biogeochemists at the University of California Riverside has provided a new view on the relationship between the earliest accumulation of oxygen in the atmosphere arguably the most important biological event in ... - Read More

New research findings open door to zinc-oxide-based UV lasers, LED devices

Researchers from North Carolina State University have solved a long standing materials science problem making it possible to create new semiconductor devices using zinc oxide ZnO including efficient ultraviolet UV lasers and LED devices for ... - Read More

New solar-cell coating could enable a major boost in efficiency

Coating
Throughout decades of research on solar cells one formula has been considered an absolute limit to the efficiency of such devices in converting sunlight into electricity Called the Shockley Queisser efficiency limit it posits that ... - Read More

Neighbors move electrons jointly: Ultrafast collective electron transfer after excitation of single electron

Electron, Electron, Electron
Applying femtosecond x ray methods researchers at the Max Born Institute in Berlin Germany and the Ecole Polytechnique Federale de Lausanne Switzerland observed an extremely fast collective electron transfer of ~100 molecular ions after excitation ... - Read More

Sweet success: Catalyzing more sugars from biomass

sugars
Catalysis may initiate almost all modern industrial manufacturing processes but catalytic activity on solid surfaces is poorly understood This is especially true for the cellulase enzymes used to release fermentable sugars from cellulosic biomass for ... - Read More

A giant step toward miniaturization: Nanotechnology transforms molecular beams into functional nano-devices

Bottom up synthesis of nanowires through metal catalyzed vapor phase epitaxy is a very attractive process to generate high quality nanowires thus providing an additional degree of freedom in design of innovative devices that extend ... - Read More

A giant step toward miniaturization: Nanotechnology transforms molecular beams into functional nano-devices with controlled atomic architectures

Bottom up synthesis of nanowires through metal catalyzed vapor phase epitaxy is a very attractive process to generate high quality nanowires thus providing an additional degree of freedom in design of innovative devices that extend ... - Read More

NASA's SORCE satellite marks a decade in the sun

NASA
NASA's Solar Radiation and Climate Experiment SORCE satellite has been providing data on the sun's irradiance for 10 years SORCE measures electromagnetic radiation produced by the sun and the power per unit area of that ... - Read More

Cell on a chip reveals protein behavior: In the future, artifical cells may produce complex protein structures on demand

Protein, Protein, protein
For years scientists around the world have dreamed of building a complete functional artificial cell Though this vision is still a distant blur on the horizon many are making progress on various fronts Prof Roy ... - Read More

Working at the extreme edge of cosmic ice

Ice
Behind locked doors in a lab built like a bomb shelter Perry Gerakines makes something ordinary yet truly alien ice Share This See Also Nature of Water Spintronics Chemistry Carbon 14 Ice shelf Gas giant ... - Read More

Turbulence in a crystal

Crystal
When a crystal is hit by an intense ultrashort light pulse its atomic structure is set in motion A team of scientists from the Max Planck Institute of Quantum Optics MPQ the Technischen Universität München ... - Read More

Sunlight stimulates release of climate-warming gas from melting Arctic permafrost

Gas
Ancient carbon trapped in Arctic permafrost is extremely sensitive to sunlight and if exposed to the surface when long frozen soils melt and collapse can release climate warming carbon dioxide gas into the atmosphere much ... - Read More

Self-assembling silica microwires may herald new generation of integrated optical devices

Silica
Silica microwires are the tiny and as yet underutilized cousins of optical fibers If precisely manufactured however these hair like slivers of silica could enable applications and technology not currently possible with comparatively bulky optical ... - Read More
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