Blog Profile / Physorg Features

Filed Under:Academics / General Science
Posts on Regator:702
Posts / Week:2.1
Archived Since:April 9, 2010

Blog Post Archive

Proposed diamond maser could operate at room temperature

(—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

(—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

(—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

(—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

(—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

(—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

(—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?

(—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

(—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

(—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

(—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.

New law implies thermodynamic time runs backwards inside black holes

(—Black holes are known to have many strange properties, such as that they allow nothing—not even light—to escape after falling in. A lesser known but equally bizarre property is that black holes appear to "know" what happens in the future in order to form in the first place. Show More Summary

Quantum computer that 'computes without running' sets efficiency record

(—Due to quantum effects, it's possible to build a quantum computer that computes without running—or as the scientists explain, "the result of a computation may be learned without actually running the computer." So far, however,...Show More Summary

Magnon, meet phonon: Magnetoelastic waves can drive magnetic bubbles through photoexcitation

(—Research in spintronics (short for spin transport electronics – the study of the electron's intrinsic spin and associated magnetic moment in solid-state devices) continues to be focused on methods for exercising precise control...Show More Summary

Researchers show that an iron bar is capable of decision-making

(—Decision-making—the ability to choose one path out of several options—is generally considered a cognitive ability possessed by biological systems, but not by physical objects. Now in a new study, researchers have shown that...Show More Summary

Scientists grow high-quality graphene from tea tree extract

(—Graphene has been grown from materials as diverse as plastic, cockroaches, Girl Scout cookies, and dog feces, and can theoretically be grown from any carbon source. However, scientists are still looking for a graphene precursor...Show More Summary

Scientists fabricate hexagonal silicon, potentially leading to light-emitting semiconductors

(—Virtually all semiconductors used in today's electronic devices are made of silicon having a cubic crystal structure, as silicon naturally crystallizes in the cubic form. In a new study, researchers have fabricated silicon...Show More Summary

Tiny gears increase light-to-work conversion efficiency by five orders of magnitude (w/ video)

(—Scientists have demonstrated that pinwheel-shaped microgears floating on a liquid surface can rotate at speeds of up to 300 r.p.m. when illuminated by an ordinary LED. This light-driven motion, which arises because the light...Show More Summary

Heart-shaped Li-ion battery printed on a cup shows batteries can be printed almost anywhere

Scientists have developed a new technique that can print batteries on almost any surface, which is expected to be essential for future flexible electronics such as roll-up displays, smart electronic clothing, and Google Glass-type devices. Show More Summary

Printable holograms could make holograms more widespread

(—Holograms have a wide variety of applications, from 3D displays to data storage, but the potential applications are currently limited by the complexity and cost of hologram fabrication. In an attempt to simplify the hologram...Show More Summary

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