News tagged with physical review letters

Related topics: electrons , atoms , quantum mechanics , quantum computing , magnetic field

Gravity Probe B confirms two Einstein theories

(PhysOrg.com) -- Stanford and NASA researchers have confirmed two predictions of Albert Einstein's general theory of relativity, concluding one of the space agency's longest-running projects.

Physics / General Physics

created May 04, 2011 | popularity 4.8 / 5 (27) | comments 86 | with audio podcast

Study helps explain behavior of latest high-temp superconductors

A Rice University-led team of physicists this week offered up one of the first theoretical explanations of how two dissimilar types of high-temperature superconductors behave in similar ways.

Physics / Superconductivity

created May 03, 2011 | popularity 5 / 5 (3) | comments 4 | with audio podcast

New theory shows one-way transmission materials should be possible for sound and light waves

(PhysOrg.com) -- Physicist Stefano Lepri of the Italian National Research Council and his partner Giulio Casati of the University of Insubria, have published a paper in Physical Review Letters, where they demonstrate throug ...

Physics / General Physics

created May 03, 2011 | popularity 5 / 5 (2) | comments 16 | with audio podcast report

Swimming led to flying, physicists say

(PhysOrg.com) -- Like a fish paddles its pectoral fins to swim through water, flying insects use the same physics laws to "paddle" through the air, say Cornell physicists.

Physics / General Physics

created May 03, 2011 | popularity 5 / 5 (6) | comments 5 | with audio podcast

Proposed gamma-ray laser could emit 'nuclear light'

(PhysOrg.com) -- Building a nuclear gamma-ray laser has been a challenge for scientists for a long time, but a new proposal for such a device has overcome some of the most difficult problems. In the new study, Eugene Tkalya ...

Physics / Optics & Photonics

created May 02, 2011 | popularity 4.6 / 5 (20) | comments 12 | with audio podcast feature

Researchers take a step toward valleytronics

Valley-based electronics, also known as valleytronics, is one step closer to reality. Two researchers at the Naval Research Laboratory (NRL) have shown that the valley degree of freedom in graphene can be ...

Physics / General Physics

created Apr 27, 2011 | popularity 4.7 / 5 (7) | comments 14 | with audio podcast

New carbon allotrope could have a variety of applications

(PhysOrg.com) -- Carbon comes in many different forms, and now scientists have predicted another new form, or allotrope, of carbon. The new form of carbon, which they call T-carbon, has very intriguing physical ...

Nanotechnology / Nanophysics

created Apr 22, 2011 | popularity 4.4 / 5 (19) | comments 8 | with audio podcast feature

Primordial weirdness: Did the early universe have 1 dimension?

(PhysOrg.com) -- Did the early universe have just one spatial dimension? That's the mind-boggling concept at the heart of a theory that University at Buffalo physicist Dejan Stojkovic and colleagues proposed in 2010.

Physics / General Physics

created Apr 20, 2011 | popularity 4.3 / 5 (37) | comments 200 | with audio podcast

Researchers advance toward hybrid spintronic computer chips

Researchers here have created the first electronic circuit to merge traditional inorganic semiconductors with organic "spintronics" – devices that utilize the spin of electrons to read, write and manipulate data.

Physics / General Physics

created Apr 13, 2011 | popularity 4.8 / 5 (4) | comments 0 | with audio podcast

Scientists view a quantum jump in real time

(PhysOrg.com) -- For more than two decades, scientists have been "watching" electrons in atoms make the jump between energy levels in real time. "Atoms have energy levels, and when electrons 'jump' from one level to another, ...

Physics / General Physics

created Apr 11, 2011 | popularity 4.5 / 5 (29) | comments 3 | with audio podcast feature

Under pressure: Germanium

(PhysOrg.com) -- Although its name may make many people think of flowers, the element germanium is part of a frequently studied group of elements, called IVa, which could have applications for next-generation ...

Physics / Condensed Matter

created Apr 06, 2011 | popularity 4.6 / 5 (5) | comments 0 | with audio podcast

Expanding the degrees of surface freezing

(PhysOrg.com) -- As part of the quest to form perfectly smooth single-molecule layers of materials for advanced energy, electronic, and medical devices, researchers at the U.S. Department of Energy's Brookhaven ...

Physics / General Physics

created Mar 31, 2011 | popularity 5 / 5 (4) | comments 0 | with audio podcast

Major advance in understanding how nanowires form

New insights into why and how nanowires take the form they do will have profound implications for the development of future electronic components. PhD student Peter Krogstrup from the Nano-Science Center at ...

Nanotechnology / Nanophysics

created Mar 25, 2011 | popularity 5 / 5 (2) | comments 0 | with audio podcast

Is space like a chessboard?

(PhysOrg.com) -- Physicists at UCLA set out to design a better transistor and ended up discovering a new way to think about the structure of space.

Physics / General Physics

created Mar 18, 2011 | popularity 4.4 / 5 (38) | comments 59 | with audio podcast

Physicists investigate lower dimensions of the universe

(PhysOrg.com) -- Several speculative theories in physics involve extra dimensions beyond our well-known four (which are broken down into three dimensions of space and one of time). Some theories have suggested 5, 10, 26, ...

Physics / General Physics

created Mar 18, 2011 | popularity 4.2 / 5 (44) | comments 87 | with audio podcast feature