News articles tagged with 'power'
Nanoparticles improve solar collection efficiency
— 6 Apr 2011 18:19 | TechnologyUsing minute graphite particles 1000 times smaller than the width of a human hair, mechanical engineers at Arizona State University hope to boost the efficiency - and profitability…
Materials scientists at Harvard demonstrate the first macro-scale thin-film solid-oxide fuel cell
— 4 Apr 2011 18:39 | TechnologyMaterials scientists at the Harvard School of Engineering and Applied Sciences (SEAS) and SiEnergy Systems LLC have demonstrated the first macro-scale thin-film solid-oxide fuel cell…
Stanford researchers use river water and salty ocean water to generate electricity
— 30 Mar 2011 16:43 | TechnologyStanford researchers have developed a battery that takes advantage of the difference in salinity between freshwater and seawater to produce electricity…
Upgrading the vanadium redox battery
— 18 Mar 2011 15:09 | TechnologyThough considered a promising large-scale energy storage device, the vanadium redox battery's use has been limited by its inability to work well in a wide range of temperatures and…
Fast laser could revolutionise data communications
— 5 Mar 2011 13:45 | TechnologyResearchers at Chalmers in Sweden have shown that a surface emitting laser - a cheaper and more energy-efficient type of laser for fibre optics than conventional lasers - can deliver…
Supercritical carbon dioxide Brayton Cycle turbines promise giant leap
— 5 Mar 2011 13:09 | TechnologySandia National Laboratories researchers are moving into the demonstration phase of a novel gas turbine system for power generation, with the promise that thermal-to-electric conversion…
Higher energy yield with torque vectoring gears
— 24 Feb 2011 20:44 | TechnologyMost large wind turbines currently operate at variable speeds. When the wind is strong, the rotor turns fast; when it slows down, the rotor speed drops. Typically rotors complete 12…
Technology breakthrough fuels laptops and phones, recharges scientist's 60-year career
— 18 Feb 2011 18:08 | TechnologyHow does a scientist fuel his enthusiasm for chemistry after 60 years? By discovering a new energy source, of course…
Geologists get unique and unexpected opportunity to study magma
— 17 Feb 2011 17:57 | Geology and palaeontologyGeologists drilling an exploratory geothermal well in 2009 in the Krafla volcano in Iceland encountered a problem they were simply unprepared for: magma (molten rock or lava underground)…
New technique boosts high-power potential for gallium nitride electronics
— 3 Feb 2011 17:15 | TechnologyGallium nitride (GaN) material holds promise for emerging high-power devices that are more energy efficient than existing technologies - but these GaN devices traditionally break down…