Blog Profile / Physorg Features


URL :http://www.physorg.com/
Filed Under:Academics / General Science
Posts on Regator:711
Posts / Week:2.1
Archived Since:April 9, 2010

Blog Post Archive

Observed cosmic rays may have come from two-million-year-old supernova

(Phys.org)—High-energy protons, nuclei, and other particles are constantly showering down on Earth's atmosphere from space, but the origins of these cosmic rays is unknown. One possibility is that the cosmic rays come from supernovae, although the evidence for this claim is limited. Show More Summary

Nanographene charge trapping memory could further miniaturize flash

(Phys.org)—Flash memory—the data storage method often used in phones, computers, and other devices—is continually being miniaturized in order to improve device performance. In an attempt to reduce the short-circuiting that often occurs...Show More Summary

Quantum process demonstrates superposition of ordered events

(Phys.org)—In a quantum superposition, a quantum object can be in two incompatible states at the same time, which is famously illustrated by Schrödinger's dead-and-alive cat. Recent research has shown that it's possible to have a superposition not only of incompatible states, but also of incompatible orders of events. Show More Summary

Tiny sponges behave in a counterintuitive way when adsorbing water

(Phys.org)—When a kitchen sponge adsorbs water into its pores, it softens and expands. Now in a new study published in The Journal of Physical Chemistry Letters, scientists have discovered that, when microporous materials adsorb fluid, they initially soften but then stiffen as they adsorb more fluid. It's as if soaking your kitchen sponge in water eventually caused it to harden.

Researchers develop new method for scaling up quantum devices

(Phys.org)—When it comes to fabricating complex quantum devices, one limitation is the number of wires available on the measurement systems that the quantum devices are built on. Typically, controlling just three or four quantum dots requires about 20 wires, which is the limit of many systems. Show More Summary

Physicists experimentally realize a quantum Hilbert hotel

(Phys.org)—In 1924, the mathematician David Hilbert described a hotel with an infinite number of rooms that are all occupied. Demonstrating the counterintuitive nature of infinity, he showed that the hotel could still accommodate additional guests. Show More Summary

Magnetically controlled battery could store energy for power grids

(Phys.org)—Scientists have built a battery containing a magnetic fluid that can be moved in any direction by applying a magnetic field. The magnetically controlled battery concept could be especially useful for flow batteries, whereShow More Summary

What is quantum in quantum thermodynamics?

(Phys.org)—A lot of attention has been given to the differences between the quantum and classical worlds. For example, quantum entanglement, superposition, and teleportation are purely quantum phenomena with no classical counterparts. Show More Summary

Scientists convert harmful algal blooms into high-performance battery electrodes

Last August, the seasonal harmful algal blooms (HABs) in Lake Erie grew so extreme that they poisoned the water system in Toledo, Ohio, leaving nearly half a million residents without drinking water. But a few researchers at the time...Show More Summary

Proposed diamond maser could operate at room temperature

(Phys.org)—Before there were lasers, there were masers—devices that operate in the microwave regime and other wavelengths that are longer than those of visible light. But while the first masers were built back in the 1950s, they have...Show More Summary

First observation made of quantum-tunneling diffusion of hydrogen atoms on ice

(Phys.org)—As long as the temperature is above absolute zero, gas molecules are always in constant random motion. They may diffuse—or spread out—through three-dimensional space or, in a process called "surface diffusion," along the two-dimensional surface of a solid. Show More Summary

One-way sound tunnel offers novel way to control acoustic waves

(Phys.org)—Scientists have designed and built an acoustic one-way tunnel that allows sound to pass through in one direction only while blocking it from passing through in the opposite direction. The tunnel is completely open to light...Show More Summary

Alloy engineering addresses long-standing problem of semiconductor defects

(Phys.org)—The performance of all of today's electronic devices depends on the quality of the semiconductor materials they're made of. Two of the most important factors that affect a semiconductor's properties are its band gap and its defects, both of which can be tuned to control its conductivity. Show More Summary

'Golden' silver nanoparticle looks and behaves like gold

(Phys.org)—In an act of "nano-alchemy," scientists have synthesized a silver (Ag) nanocluster that is virtually identical to a gold (Au) nanocluster. On the outside, the silver nanocluster has a golden yellow color, and on the inside, its chemical structure and properties also closely mimic those of its gold counterpart. Show More Summary

Delicately opening a band gap in graphene enables high-performance transistors

(Phys.org)—Electrons can move through graphene with almost no resistance, a property that gives graphene great potential for replacing silicon in next-generation, highly efficient electronic devices. But currently it's very difficult...Show More Summary

Dark matter hiding in stars may cause observable oscillations

(Phys.org)—Dark matter has never been seen directly, but scientists know that something massive is out there due to its gravitational effects on visible matter. One explanation for how such a large amount of mass appears to be right in front of our eyes yet completely invisible by conventional means is that the dark matter is hiding in the centers of stars.

What's the best way to charge millions of electric vehicles at once?

(Phys.org)—About 350,000 plug-in electric vehicles (EVs) have been sold in the US from 2008—when they first entered the market—to mid-2015. Although EVs still represent a small fraction of the country's 250 million total vehicles, the continual increase in sales suggests that EVs will become even more popular over the next few decades. Show More Summary

Most precise test of Lorentz symmetry for the photon finds that the speed of light is indeed constant

(Phys.org)—The laws of physics are the same no matter which direction you're facing or how fast you're moving—it's such an intuitive concept that most people probably don't know that it has a name: Lorentz symmetry. Over the past several...Show More Summary

Chameleon-inspired stretchable e-skin changes color when touched

(Phys.org)—Researchers at Stanford University have fabricated a stretchable, color-changing, pressure-sensitive material–basically the closest thing yet to an artificial chameleon skin. Touching the new electronic skin (e-skin) withShow More Summary

New limit to the Church-Turing thesis accounts for noisy systems

(Phys.org)—The question of what a computer is capable of, and what it is not, has intrigued computer scientists since the 1930s, when Alonzo Church and Alan Turing began investigating the capabilities and limits of computers. In a new study, researchers have explored the computing abilities of noisy physical systems, which are those that are disturbed by random fluctuations.

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