Physics

Molecular 'sieves' harness ultraviolet irradiation for greener power generation

New research shows that exposing polymer molecular sieve membranes to ultraviolet (UV) irradiation in the presence of oxygen produces highly permeable and selective membranes for more efficient molecular-level separation, an essential process in everything from water purification to controlling gas emissions.

Global quantum networks based on optical fibers: Scientists quantum mechanically couple atoms to glass fiber cables

Researchers have quantum mechanically couple atoms to glass fiber cables. Now, they have shown that their technique enables storage of quantum information over a sufficiently long period of time to realize global quantum networks based on optical fibers.

NASA'S Chandra Turns up Black Hole Bonanza in Galaxy Next Door

Using data from NASA's Chandra X-ray Observatory, astronomers have discovered an unprecedented bonanza of black holes in the Andromeda Galaxy, one of the nearest galaxies to the Milky Way.

Incoherent combining of fiber lasers developed for directed energy applications

Developed at the U.S. Naval Research Laboratory, Plasma Physics Division, incoherent combining of high power fiber lasers for directed energy (DE) weapons and power beaming have proven effective in laser weapon systems (LaWS) prototypes now being temporarily deployed onboard select Navy ships.

X-rays resurrect 200-year-old lost aria

(Phys.org) —Thanks to scientists at the SLAC National Accelerator Laboratory, audiences can hear a 200-year-old opera by composer Luigi Cherubini in full for the first time in centuries. The scientists blasted X-rays at the damaged musical score to peek at the musical notes hidden beneath a layer of smudgy black.

'Popcorn' particle pathways promise better lithium-ion batteries

Researchers have confirmed the particle-by-particle mechanism by which lithium ions move in and out of electrodes made of lithium iron phosphate, findings that could lead to better performance in lithium-ion batteries in electric vehicles, medical equipment and aircraft.

NASA Schedules Media Events and Coverage for New Solar Mission Launch

NASA's Interface Region Imaging Spectrograph (IRIS) mission is scheduled to launch at 7:27 p.m. PDT (10:27 p.m. EDT) Wednesday, June 26, from Vandenberg Air Force Base in California.

Marks on Martian Dunes May Reveal Tracks of Dry Ice Sleds

NASA research indicates hunks of frozen carbon dioxide -- dry ice -- may glide down some Martian sand dunes on cushions of gas similar to miniature hovercraft, plowing furrows as they go.

Simple theory may explain dark matter

Most of the matter in the universe may be made out of particles that possess an unusual, donut-shaped electromagnetic field called an anapole.

Research team proposes lumpy crust of X-ray pulsars responsible for arrest of spin slowing

(Phys.org) —A trio of researchers working in Spain suggests in a paper published in the journal Nature Physics that the surface of some neutron stars might be "lumpy." Stars with such a surface might help explain, they say, the lack of pulsars with spin periods longer than 12 seconds. After running simulations in their lab, the researchers found that neutron stars with lumpy "pasta-like" surfaces would slow to a certain point then stop slowing with periods remaining constant at near to 12 seconds.

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