Blog Profile / Physorg Features

Filed Under:Academics / General Science
Posts on Regator:673
Posts / Week:2.1
Archived Since:April 9, 2010

Blog Post Archive

Clever cloaks: Unique metamaterials preserve phase while guiding surface waves around ultrasharp corners and bumps

(—Today's photonic and plasmonic devices – the latter based on surface plasmons (a coherent delocalized electron oscillations that exist at the interface between metal and dielectric) and combining the small size and manufacturability...Show More Summary

Physicists propose new definition of time crystals—then prove such things don't exist

(—For the past few years, physicists have been intrigued by a hypothetical system called a "quantum time crystal," which has the unusual property of exhibiting periodic motion in its ground state, which is its state of lowest energy. Show More Summary

'Straintronic spin neuron' may greatly improve neural computing

(—Researchers have proposed a new type of artificial neuron called a "straintronic spin neuron" that could serve as the basic unit of artificial neural networks—systems modeled on human brains that have the ability to compute, learn, and adapt. Show More Summary

Training Schrodinger's cat: Controlling the quantum properties of light

(—Constructing quantum computers and other quantum devices requires the ability to leverage quantum properties such as superposition and entanglement – but these effects are fragile and therefore hard to maintain. Recently,Show More Summary

Decoding the brain: Scientists redefine and measure single-neuron signal-to-noise ratio

(—The signal-to-noise ratio, or SNR, is a well-known metric typically expressed in decibels and defined as a measure of signal strength relative to background noise – and in statistical terms as the ratio of the squared amplitude or variance of a signal relative to the variance of the noise. Show More Summary

Fuel-free nanomotor is powered by ultrasound and magnetic fields

(—Nanoscale motors, like their macroscale counterparts, can be built to run on a variety of chemical fuels, such as hydrogen peroxide and others. But unlike macroscale motors, some nanomotors can also run without fuel, instead being powered by either magnetic or acoustic fields. Show More Summary

Physicists observe magnetic 'devil's staircase'

(—Many hiking trails feature a "devil's staircase"—a set of steps that are often steep and difficult to climb. The devil's staircase is also the name of a mathematical function whose graph exhibits a jagged step-like organization reminiscent of a real staircase, although in a highly ordered fractal pattern. Show More Summary

Simple hydrogen storage solution is powered by solar energy

(—By using solar energy to reversibly attach and detach hydrogen atoms on a 6-carbon ring called benzene, scientists have developed a simple and efficient method to store, transport, and release hydrogen potentially on a large scale. Show More Summary

The physics of badminton

(—When it comes to flying projectiles, the badminton shuttlecock or "birdie" is unusual in that it flips on impact with a racket so that it always flies cork-first. This flipping motion arises from the fact that, unlike almost all other sports projectiles, the shuttlecock has a conical shape and, because the cork is much denser than the feathers, a non-homogeneous mass.

Blind quantum computing method surpasses efficiency 'limit'

(—Demonstrating that limits were made to be broken, physicists have overcome what was previously considered to be a natural and universal limit on the efficiency of a quantum cryptography task called blind quantum computing....Show More Summary

Quantum Cheshire Cat effect may be explained by standard quantum mechanics

(—"A grin without a cat" is how Lewis Carroll describes the Cheshire Cat's mysterious way of disappearing while leaving its grin behind in his 1865 classic, Alice in Wonderland. The fanciful character raises a question that has captured physicists' attention over the past few years: can an object be separated from its properties?

Solar cell sets world record with a stabilized efficiency of 13.6%

(—In a new study, scientists have reported a world record stabilized efficiency of 13.6% for a triple-junction thin-film silicon solar cell, which is a newer version of the single-junction thin-film silicon solar cell that has been used in commercial products since the 1970s. Show More Summary

Proposed synchrotron could store supersonic beams of hydrogen atoms

(—With a circumference of 27 km (17 miles), the Large Hadron Collider (LHC) holds the claim of being the largest particle accelerator in the world, but it is far from being the only device of its kind. Currently there are about...Show More Summary

Physicists make first observation of the pushing pressure of light

(—For more than 100 years, scientists have debated the question: when light travels through a medium such as oil or water, does it pull or push on the medium? While most experiments have found that light exerts a pulling pressure, in a new paper physicists have, for the first time, found evidence that light exerts a pushing pressure.

Amoeba-inspired computing system outperforms conventional optimization methods

(—Researchers have designed and implemented an algorithm that solves computing problems using a strategy inspired by the way that an amoeba branches out to obtain resources. The new algorithm, called AmoebaSAT, can solve the...Show More Summary

Quantum computer emulated by a classical system

(—Quantum computers are inherently different from their classical counterparts because they involve quantum phenomena, such as superposition and entanglement, which do not exist in classical digital computers. But in a new paper,...Show More Summary

Semiliquid battery competitive with both Li-ion batteries and supercapacitors

(—A new semiliquid battery developed by researchers at The University of Texas at Austin has exhibited encouraging early results, encompassing many of the features desired in a state-of-the-art energy-storage device. In particular,...Show More Summary

New device may make converting waste heat to electricity industrially competitive

(—Currently, up to 75% of the energy generated by a car's engine is lost as waste heat. In theory, some of this waste heat can be converted into electricity using thermoelectric devices, although so far the efficiency of these devices has been too low to enable widespread commercialization.

Physicists find ways to increase antihydrogen production

(—There are many experiments that physicists would like to perform on antimatter, from studying its properties with spectroscopic measurements to testing how it interacts with gravity. But in order to perform these experiments, scientists first need some antimatter. Show More Summary

What happens when Newton's third law is broken?

Even if you don't know it by name, everyone is familiar with Newton's third law, which states that for every action, there is an equal and opposite reaction. This idea can be seen in many everyday situations, such as when walking, where a person's foot pushes against the ground, and the ground pushes back with an equal and opposite force. Show More Summary

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