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Physics/Chemistry News
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Today's physics/chemistry headlines from the sources selected by our team:
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Physicists investigate structural properties of spider webs
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(PhysOrg.com) -- "Although the orb web of a spider is a lightweight structure, it seems to be a highly optimized structure, presumably as a result of evolution from the Jurassic period or earlier," explain physicists Yuko Aoyananagi and Ko Okumura, who are investigating the structural properties of spider webs. "It seems to resist different loads such as wind and insect impact efficiently and can catch prey even if some threads are broken."
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Electrons on the brink: Fractal patterns may be key to semiconductor magnetism (w/ Video)
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(PhysOrg.com) -- Just as the heartbeats of today's electronic devices depend on the ability to switch the flow of electricity in semiconductors on and off with lightning speed, the viability of the "spintronic" devices of the future -- technologies that manipulate both the flow and magnetic "spin" of electrons -- will require similarly precise control over semiconductor magnetism.
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Record-breaking LHC collisions offer first glimpse of physics at new energy frontier
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(PhysOrg.com) -- In December, the Large Hadron Collider, the world?s largest particle accelerator, shattered the world record for highest energy particle collisions.
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Exploring the characteristics of viscoelastic fluids
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(PhysOrg.com) -- There are many microorganisms out there, navigating through complex biological fluids. `One of the most common migrations takes place with spermatozoa as it navigates the female reproductive tract,` Joseph Teran tells PhysOrg.com. `But there are other organisms that move through difficult environments as well, and we want to gain a better understanding of how these organisms move through viscoelastic fluids, like those found in biology.`
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Ultra-cold chemistry: First direct observation of exchange process in quantum gas
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Considerable progresses made in controlling quantum gases open up a new avenue to study chemical processes. An Austrian research team has now succeeded in directly observing chemical exchange processes in an ultra-cold sample of cesium atoms and Feshbach molecules.
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Second 'quantum logic clock' based on aluminum ion is now world's most precise clock
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Physicists have built an enhanced version of an experimental atomic clock based on a single aluminum atom that is now the world's most precise clock, more than twice as precise as the previous pacesetter based on a mercury atom. The new aluminum clock would neither gain nor lose one second in about 3.7 billion years.
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Sunny Record: Breakthrough for Hybrid Solar Cells
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Scientists in Germany have succeeded in developing a method for treating the surface of nanoparticles which greatly improves the efficiency of organic solar cells. The researchers were able to attain an efficiency of 2 percent by using so-called quantum dots composed of cadmium selenide. These measurements, well above the previous efficiency ratings of 1 to 1.8 percent, were confirmed.
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Quantum computing leap forward: altering a lone electron without disturbing its neighbors
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A major hurdle in the ambitious quest to design and construct a radically new kind of quantum computer has been finding a way to manipulate the single electrons that very likely will constitute the new machines' processing components or "qubits." Now, a physicist has discovered how to do just that -- demonstrating a method that alters the properties of a lone electron without disturbing the trillions of electrons in its immediate surroundings. The feat is essential to the development of future varieties of superfast computers with near-limitless capacities for data.
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Computers that use light instead of electricity? First germanium laser created
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Researchers have demonstrated the first laser built from germanium that can emit wavelengths of light useful for optical communications. It's also the first germanium laser to operate at room temperature. Unlike the materials typically used in lasers, germanium is easy to incorporate into existing processes for manufacturing silicon chips. So the result could prove an important step toward computers that move data -- and maybe even perform calculations -- using light instead of electricity.
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GREAT RED SPOT NOT AS GREAT
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GREAT RED SPOT NOT AS GREAT The hurricanes that visit the Gulf and Caribbean in September and even the huge jetstream that dominates winter weath. . .
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