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Nanoscale whirlpools could multiply magnetic memory

May 24, 2013

Magnetic transmission soft x-ray microscopy shows the reverse of spin circularity in magnetic vortices in a row of nanodisks, after applying a 1.5 nanosecond pulse of magnetic field. The change from left to right is not a change in lighting, as it may appear, but is instead due to changing magnetic contrast.

Lawrence Berkeley National Laboratory (Berkeley Lab) researchers have used the unique capabilities of the Lab’s Advanced Light Source (ALS) to advance a new concept in magnetic memory.

“What we’re working on now could make these gadgets perform hundreds of times better and also be a hundred times more energy efficient,” says the Lab’s Peter Fischer.

Four memory states

Magnetic memories store… read more

Bitcoin attracts major investors

May 24, 2013

bitcoin

Bitcoin is gaining traction outside its existing community of enthusiastic early adopters.

An estimated 1,100 people attended Bitcoin 2013, the first large conference dedicated to Bitcoin, MIT Technology Review reports. The conference also showed that Bitcoin has begun to attract the backing of conventional technology industry investors, who have sunk millions of dollars into a handful of Bitcoin startups.

In the Bitcoin system,… read more

An interplanetary GPS using pulsar signals

May 24, 2013

rotation_powered_pulsar

Researchers have worked out the practical details for an autonomous spacecraft navigation system using signals from pulsars in essentially the same way that we use GPS satellites to navigate on Earth, MIT Technology Review reports.

A pulsar is a rotating neutron star that emits a beam of electromagnetic radiation at a very precise interval between pulses that ranges from milliseconds to seconds.

By measuring the arrival time… read more

Radioactive nanoparticles selectively target cancer cells

May 23, 2013

the nanoparticles as designed by Lewis and Robertson. The green interior depicts the radioactive lutetium surrounded by a gold shell. Credit can go to Michael Lewis, University of Missouri and Harry S. Truman Memorial Veterans’ Hospital.

Researchers at the University of Missouri have found a way to create radioactive nanoparticles that target lymphoma tumor cells wherever they may be in the body.

Michael Lewis, an associate professor of oncology in the MU College of Veterinary Medicine, says being able to target secondary tumors is vital to successfully treating patients with progressive cancers.

“Depending on the type of cancer, primary tumors… read more

Long-term benefit of TMS in patients with depression shown

May 23, 2013

NeuroStar TMS System (credit:

New data show that the NeuroStar TMS (transcranial magnetic stimulation) Therapy System induced statistically and clinically meaningful response and remission in patients with Major Depressive Disorder (MDD) during the acute phase of therapy, and the effects were maintained through one year of treatment.

At the end of acute treatment, 62 percent of patients achieved symptomatic improvement while 41 percent reported complete remission. At 12 months,… read more

NASA experiment to examine the beginnings of the universe

May 23, 2013

The entrance of the CIBER optics, showing two near-infrared wide-field cameras (top), an absolute spectrometer (lower left) and a Fraunhofer line spectrometer (lower right) (credit: Jamie Bock/Caltech)

When did the first stars and galaxies form in the universe? How brightly did they burn their nuclear fuel?

Scientists will seek to gain answers to these questions with the launch of the Cosmic Infrared Background ExpeRIment (CIBER) on a Black Brant XII suborbital sounding rocket between 11 and 11:59 p.m. EDT, June 4 from the Wallops Flight Facility in Virginia.

Jamie Bock, CIBER principal investigator… read more

A new tumor-killer

May 23, 2013

saxs_hamlet

Scientists from Nanyang Technological University (NTU) and Lund University, Sweden, have bioengineered a novel molecule proven to successfully kill tumor cells.

This molecule is based on a natural protein present in human breast milk, which has been found to have strong and wide-ranging tumor killing properties when bound to certain lipids. Lipids are organic molecules like amino acids and carbohydrates, made up of carbon and… read more

A new method for producing clean hydrogen

May 23, 2013

TEM_image_Au-a-Fe2O3_catalyst

Duke University engineers have developed a novel method for producing clean hydrogen, which could prove essential to weaning society off of fossil fuels and their environmental implications.

While hydrogen is ubiquitous in the environment, producing and collecting molecular hydrogen for transportation and industrial uses is expensive and complicated. Just as importantly, a byproduct of most current methods of producing hydrogen is carbon monoxide, which is… read more

Scanadu Scout ‘Tricorder’ launches on indiegogo

May 23, 2013

Scanadu Scout (credit: Scanadu)

Scanadu has announced updates to its Scanadu Scout, the “first medical Tricorder,” a prototype device designed to measure vital signs; and the launch of an indiegogo campaign.

A first-edition Scout can be reserved on indiegogo and will be available in March 2014.

The Scout is sold as an exploratory tool. “By helping us collect data, we can file our application to the FDA for market… read more

Stephen Hawking’s life: a comic book

May 23, 2013

hawking comic

Released May 23, “Stephen Hawking: Riddles of Time & Space” is an illustrated version of Hawking’s life story in comic-book form.

“The most surprising thing about Stephen Hawking is his razor wire wit that is sometimes withering and other times matched with a puckish sense of humor. He maintains a child’s delight in discovery and credits his disability for allowing him to focus his mind.

“Our… read more

Russia developing anti-terrorist robots

May 23, 2013

russian_robots

Russian experts are developing robots designed to minimize casualties in terrorist attacks and neutralize terrorists, Russian Deputy Prime Minister Dmitry Rogozin said on May 17, RIA Novosti reports.

Robots could also help evacuate injured servicemen and civilians from the scene of a terrorist attack, said Rogozin, who oversees the defense industry.

Other anti-terror equipment Russia is developing includes systems that can see terrorists through obstacles and… read more

A 3D-printed navy?

May 23, 2013

The Northrop Grumman-built Triton unmanned aircraft system completed its first flight on May 22, 2013. Could a future version be 3D-printed? (Credit: Northrop Grumman by Bob Brown)

Instead a carrying spare parts, space-constrained U.S. Navy ships in the future might carry 3-D printers and bags of various powdered ingredients, and simply download the design files needed to print items as necessary, according to the Armed Forces Journal,

“Perhaps closer at hand is a distributed global production network in which sailors and Marines send an email with a digital scan or design for a

read more

Non-wetting fabric drains sweat

May 22, 2013

The hydrophobic fabric repels water except where stitched with channels (credit: UC Davis)

Waterproof fabrics that whisk away sweat could be the latest application of microfluidic technology developed by bioengineers at the University of California, Davis.

The new fabric works like human skin, forming excess sweat into droplets that drain away by themselves, said inventor Tingrui Pan, professor of biomedical engineering.

One area of research in Pan’s Micro-Nano Innovations Laboratory at UC Davis is a… read more

Do salamanders hold the solution to regeneration?

May 22, 2013

401px-SpottedSalamander

Salamanders’ immune systems are key to their remarkable ability to regrow limbs, and could also underpin their ability to regenerate spinal cords, brain tissue and even parts of their hearts, scientists have found.

In research published in the Proceedings of the National Academy of Sciences (open access), researchers from the Australian Regenerative Medicine Institute (ARMI) at Monash University found that when immune cells known as macrophages… read more

Reducing caloric intake delays nerve cell loss

May 22, 2013

(Credit: iStockphoto)

Activating an enzyme known to play a role in the anti-aging benefits of calorie restriction delays the loss of brain cells and preserves cognitive function in mice, according to a study published in the May 22 issue of The Journal of Neuroscience.

The findings could one day guide researchers to discover drug alternatives that slow the progress of age-associated impairments in the brain.… read more

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