Tag Archives: symmetry

Plastic Surgery to Improve Your Looks — and Your Sight

Oculoplastic surgeons at the Yale Eye Center perform a range of procedures, from Botox injections to fix wrinkles, to lifesaving surgeries to help treat cancers near the eye.

(March 2013) Gail Chiasson’s “puffy eyelids” had gotten so heavy she felt as if they’d become permanently half-shut. Not only did she look sleepy, she felt sleepy. She couldn’t read a book for long and grew especially concerned when a doctor trying to perform an eye test had to tape her lids out of the way.

She visited the Yale Eye Center, where a surgeon performed a blepharoplasty, a surgical procedure to lift the upper eyelids and improve vision. He also removed extra fat from her lower lids to improve her appearance. The results, says Chiasson, are “unbelievable, like night and day, from being sleepy to wide awake. I didn’t even realize how much the droopy lids had affected my peripheral vision.” (more…)

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New Phenomenon in Nanodisk Magnetic Vortices

Berkeley Lab Researchers Take a Mesocale Look at Magnetic Vortex Formations

The phenomenon in ferromagnetic nanodisks of magnetic vortices – hurricanes of magnetism only a few atoms across – has generated intense interest in the high-tech community because of the potential application of these vortices in non-volatile Random Access Memory (RAM) data storage systems. New findings from scientists at the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) indicate that the road to magnetic vortex RAM might be more difficult to navigate than previously supposed, but there might be unexpected rewards as well.

In an experiment made possible by the unique X-ray beams at Berkeley Lab’s Advanced Light Source (ALS), a team of researchers led by Peter Fischer and Mi-Young Im of the Center for X-Ray Optics (CXRO), in collaboration with scientists in Japan, discovered that contrary to what was previously believed, the formation of magnetic vortices in ferromagnetic nanodisks is an asymmetric phenomenon. It is possible that this breaking of symmetry would lead to failure in a data storage device during its initialization process. (more…)

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Diamond in The Rough: Half-Century Puzzle Solved

A Yale-led team of mineral physicists has for the first time confirmed through high-pressure experiments the structure of cold-compressed graphite, a form of carbon that is comparable in hardness to its cousin, diamond, but only requires pressure to synthesize. The researchers believe their findings could open the way for a super hard material that can withstand great force and can be used — as diamond-based materials are now — for many electronic and industrial applications. The study appears in Scientific Reports, a Nature journal.

Under normal conditions, pure carbon exhibits vastly different physical properties depending on its structure. For example, graphite is soft, but diamond is one of the hardest materials known. Graphite conducts electricity, but diamond is an insulator. (more…)

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