Surpassing competition after only over three years of research,a record efficiency of 44.7% was measured at a concentration of 297 suns for this solar cell.
The Fraunhofer Institute for Solar Energy Systems ISE, Soitec, CEA-Leti and the Helmholtz Center Berlin jointly announced today having achieved a new world record for the conversion of sunlight into electricity using a new solar cell structure with four solar subcells. Surpassing competition after only over three years of research, and entering the roadmap at world class level, a new record efficiency of 44.7% was measured at a concentration of 297 suns. This indicates that 44.7% of the solar spectrum’s energy, from ultraviolet through to the infrared, is converted into electrical energy. This is a major step towards reducing further the costs of solar electricity and continues to pave the way to the 50% efficiency roadmap.
Pyrite — perhaps better known as “fool’s gold” for its yellowish metallic appearance — is a common, naturally occurring mineral.
It holds promise as a high-tech material, with potential uses in solar cells, spintronic devices and catalysts, but is also a byproduct of corrosion of steel in deep-sea oil and gas wells. Both its potential usefulness in devices and its role in corrosion are largely influenced by the fundamental electronic properties of its surface — which have remained relatively unexplored.
Healthy baby born after ovarian tissue removed, stimulated and reinserted.
A previously infertile woman has given birth to a healthy baby after undergoing a procedure that involved removing her ovaries and stimulating them in the lab to produce eggs. The fertility treatment, dubbed in vitro activation, could offer hope to millions of women who have problems with ovulation.
In vitro activation addresses a condition called primary ovarian insufficiency, or premature ovarian failure, whereby egg-containing ovarian follicles do not grow in the way that they are supposed to. Few, if any, eggs ever reach maturity. As many as 1% of women of reproductive age are infertile because of the condition, and egg donation is the currently the only option available to help these women to become pregnant.
A 32-year-old man whose knee and lower leg were amputated in 2009 after a motorcycle accident is apparently the first person with a missing lower limb to control a robotic leg with his mind.
Rewired nerves control robotic leg
Video shows man walking and kicking a football with direct signals from brain. The power of thought alone is not enough to move inanimate objects — unless the object is a robotic leg wired to your brain, that is.