Nanoscale heat engine exceeds standard efficiency limit
New two-dimensional semiconductor has ideal band gap for solar harvesting
Physicist finds that E. coli replicate close to thermodynamic limits of efficiency
All living things must obey the laws of physics—including the second law of thermodynamics, which states that the universe's disorder, or entropy, can only grow. Highly ordered cells and organisms appear ...
One in, two out: Simulating more efficient solar cells
(Phys.org)—Using an exotic form of silicon could substantially improve the efficiency of solar cells, according to computer simulations by researchers at the University of California, Davis, and in Hungary. ...
Bladeless wind turbine inspired by Tesla
Turning heat to electricity... efficiently
(PhysOrg.com) -- In everything from computer processor chips to car engines to electric powerplants, the need to get rid of excess heat creates a major source of inefficiency. But new research points the way ...
Achieving optimal efficiencies for nanoengines
The efficient choice among combustion engines
(Phys.org) —Researchers at ETH Zurich have developed an internal combustion engine that emits less than half the CO2 compared to a regular engine without compromising performance. This corresponds to fuel ...
Solar discovery sets new record for low-grade silicon
(Phys.org) —Solar engineers from UNSW have developed an innovative method to dramatically improve the quality of low-grade silicon, promising to significantly improve electrical efficiency and reduce the cost of solar panels.
Improving performance of a solar fuel catalyst
(Phys.org)—Hydrogen gas that is created using solar energy to split water into hydrogen and oxygen has the potential to be a cost-effective fuel source if the efficiency of the catalysts used in the water-splitting ...
Wind turbines that learn like humans
Depending on the weather, wind turbines can face whispering breezes or gale-force gusts. Such variable conditions make extracting the maximum power from the turbines a tricky control problem, but a collaboration of Chinese ...
New kind of solar cell could capture significantly more energy than current cells
New solar cells could increase the maximum efficiency of solar panels by over 25%, according to scientists from the University of Cambridge.
Evolutionary lessons for wind farm efficiency
Evolution is providing the inspiration for University of Adelaide computer science research to find the best placement of turbines to increase wind farm productivity.
Atmospheric 'sunshade' could reduce solar power generation
The concept of delaying global warming by adding particles into the upper atmosphere to cool the climate could unintentionally reduce peak electricity generated by large solar power plants by as much as one-fifth, ...