Physics

Nanowire solar cells raise efficiency limit

Scientists have shown that a single nanowire can concentrate the sunlight up to 15 times of the normal sun light intensity. The results are surprising and the potential for developing a new type of highly efficient solar cells is great.

Experiments demonstrate unusual melting and recrystallization behavior in one-dimensional electron crystals

(Phys.org) —The melting of ice is a familiar process: the ice gradually loses its crystalline structure and becomes a featureless puddle of liquid. Normally, no amount of further heating will bring back the crystalline structure. Experiments by Hiroki Ikegami and co-workers at the Low Temperature Physics Laboratory in the RIKEN Advanced Science Institute have now shown that a one-dimensional 'Wigner' crystal on the surface of liquid helium can be made to repeatedly melt and recrystallize with rising electron density.

Evidence of magnetic superatoms could open doors to new spin electronics

(Phys.org) —Scientists have found evidence for the existence of magnetic superatoms—small, compact clusters of atoms whose electrons occupy a set of orbitals around the entire cluster rather than around the individual atoms. If scientists can synthesize superatoms with magnetic properties, then one day they may use them to create new spin-dependent electronics.

Stirred, not shaken: Physicists gain more particle control

Cornell physicists can now precisely control how particles in viscous liquids swirl, twirl and whirl. Think of coffee and adding cream—and gaining control of the particles in the cream. Understanding this concept could allow chemists, physicists and engineers to better detect molecules, control the mixture of nanoscale particles and enhance self-assembly in solutions.

How organic magnets grow in a thin film

Development of organic single molecule magnets opens a great many of applications for magnetic materials and new memory technologies. Organic magnets are lighter, more flexible and less energy intensive in production than conventional magnets. Scientists have now established a first step on the road to new applications for organic magnets: Their controlled deposition in a thin film.

NASA’s ‘Destination Station’ Coming To Atlanta

The public is invited to learn more about living in space, directly from NASA experts and space-exploring astronauts, in a series of special events coming to Georgia. The agency’s “Destination Station” activities in the Atlanta area start Monday, April 15.

SpaceX Dragon Spacecraft Carrying NASA Cargo Ready for Return to Earth

More than three weeks after arriving at the International Space Station, the Space Exploration Technologies Corp. (SpaceX) Dragon spacecraft is ready for the trip back to Earth, now scheduled for Tuesday, March 26.

NASA Extends Hubble Space Telescope Science Operations Contract

NASA is extending its contract with the Association of Universities for Research in Astronomy for the agency’s Hubble Space Telescope Science Operations activities at the Space Telescope Science Institute in Baltimore, Md., for 36 months.

NASA Awards Contract Modification for Support at Michoud Assembly Facility

NASA has signed a one-year contract option with Jacobs Technology, Inc., of New Orleans to continue manufacturing support and facilities operations at the agency's Michoud Assembly Facility in New Orleans.

Quantum computers coming soon? Metamaterials used to observe giant photonic spin Hall effect

Engineering a unique metamaterial of gold nanoantennas, researchers were able to obtain the strongest signal yet of the photonic spin Hall effect, an optical phenomenon of quantum mechanics that could play a prominent role in the future of computing.

Pages

Subscribe to Mr. Loyacano RSS