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Exotic states materialize with supercomputers

February 13, 2015 9:03 am | by Jorge Salazar, TACC | News | Comments

Scientists used supercomputers to find a new class of materials that possess an exotic state of matter known as the quantum spin Hall effect. The researchers published their results in Science in December 2014, where they propose a new type of transistor made from these materials. The team calculated the electronic structures of the materials using the Stampede and Lonestar supercomputers of the Texas Advanced Computing Center.

Are You a Security Risk for Your Company?

February 13, 2015 7:00 am | News | Comments

Phishing emails are more and more common as entry points for hackers— unwittingly clicking on a link in a scam email could unleash malware into a network or provide other access to cyberthieves. A growing number of companies, including Twitter Inc., are giving their workers' a pop quiz, testing security savvy by sending spoof phishing emails to see who bites.

Lab-in-a-Box Can Aid Doctor's Bedside Manner

February 13, 2015 7:00 am | by UC San Diego | News | Comments

Researchers invented the Lab-in-a-Box— a box that contains assorted sensors and software designed to monitor a doctor’s office, particularly during consultations with patients. The goal is to analyze the physician’s behavior and better understand the dynamics of the interactions of the doctor with the electronic medical records and the patients in front of them.

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Tackling the "achilles' heel" of OLED displays

February 12, 2015 11:15 am | by Rob Matheson, MIT News Office | News | Comments

Flexible smartphones and color-saturated television displays were some highlights at this year’s Consumer Electronics Showcase, held in January in Las Vegas.                 

3-D printing aims to rewrite the script on cooking and tech

February 12, 2015 10:53 am | by Michelle Locke, Associated Press | News | Comments

Printed pastries with individually tailored nutrient levels. Ravioli that assemble themselves. Wedding cake toppers that are exact, tiny, renditions of the happy couple. It's all possible thanks to a fresh meeting of taste and technology that has chefs exploring what 3-D printing might mean for the future of food.

Smartphone apps just as accurate as wearable devices for tracking physical activity

February 11, 2015 12:37 pm | by Univ. of Pennsylvania | News | Comments

Although wearable devices have received significant attention for their ability to track an individual’s physical activity, most smartphone applications are just as accurate.              

Let hackers in: experts say traps might be better than walls

February 11, 2015 12:08 pm | by Youkyung Lee - AP Technology Writer | News | Comments

Ever since the Internet blossomed in the 1990s, cybersecurity was built on the idea that computers could be protected by a digital quarantine. Now, as hackers routinely overwhelm such defenses, experts say cybersecurity is beyond due an overhaul.  

Engineer produces free Braille-writer app

February 10, 2015 2:42 pm | by Andrew Myers, Stanford Univ. | News | Comments

Three years ago, Sohan Dharmaraja was a Stanford Univ. engineering doctoral candidate in search of his next project when he visited the Stanford Office of Accessible Education, which helps blind and visually challenged students successfully navigate the world of higher education.

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Electronics you can wrap around your finger

February 10, 2015 11:51 am | by American Institute of Physics | News | Comments

Electronic devices have shrunk rapidly in the past decades, but most remain as stiff as the same sort of devices were in the 1950s: a drawback if you want to wrap your phone around your wrist when you go for a jog or fold your computer to fit in a pocket. Researchers from South Korea have taken a new step toward more bendable devices by manufacturing a thin film that keeps its useful electric and magnetic properties even when highly curved.

Technique devised for mapping temperature in tiny electronic devices

February 10, 2015 9:06 am | by Shaun Mason, Univ. of California, Los Angeles | News | Comments

Overheating is a major problem for the microprocessors that run our smartphones and computers. But a team of scientists have made a breakthrough that should enable engineers to design microprocessors that minimize that problem: They have developed a thermal imaging technique that can “see” how the temperature changes from point to point inside the smallest electronic circuits.

New tool monitors effects of tidal, wave energy on marine habitat

February 6, 2015 12:07 pm | by Michelle Ma, Univ. of Washington | Videos | Comments

Researchers building a new underwater robot they’ve dubbed the “Millennium Falcon” certainly have reason to believe it will live up to its name. The robot will deploy instruments to gather information in unprecedented detail about how marine life interacts with underwater equipment used to harvest wave and tidal energy.

Nanoscale solution to big problem of overheating in microelectronic devices

February 6, 2015 10:01 am | by Megan Hazle, Univ. of Southern California | News | Comments

Anyone who has ever toasted the top of their legs with their laptop or broiled their ear on a cell phone knows that microelectronic devices can give off a lot of heat. These devices contain a multitude of transistors, and although each one produces very little heat individually, their combined thermal output is significant and can damage the device.

Human insights inspire solutions for household robots

February 5, 2015 11:12 am | by Aaron Dubrow, NSF | News | Comments

People typically consider doing the laundry to be a boring chore. But laundry is far from boring for artificial intelligence (AI) researchers. To AI experts, programming a robot to do the laundry represents a challenging planning problem because current sensing and manipulation technology is not good enough to identify precisely the number of clothing pieces that are in a pile and the number that are picked up with each grasp.

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Octopus robot makes waves with ultra-fast propulsion

February 5, 2015 10:47 am | by Glenn Harris, Univ. of Southampton | Videos | Comments

Scientists have developed an octopus-like robot, which can zoom through water with ultra-fast propulsion and acceleration never before seen in man-made underwater vehicles. Most fast aquatic animals are sleek and slender to help them move easily through the water but cephalopods, such as the octopus, are capable of high-speed escapes by filling their bodies with water and then quickly expelling it to dart away.

Using disorder to control light on a nanoscale

February 5, 2015 9:52 am | by Matthew Chin, Univ. of California, Los Angeles | News | Comments

A breakthrough by a team of researchers could lead to the more precise transfer of information in computer chips, as well as new types of optical materials for light emission and lasers. The researchers were able to control light at tiny lengths around 500 nm, smaller than the light’s own wavelength, by using random crystal lattice structures to counteract light diffraction.

Harnessing the power of drones to assess disaster damage

February 5, 2015 9:38 am | by Michael Price, San Diego State Univ. | News | Comments

When disaster strikes, it's important for responders and emergency officials to know what critical infrastructure has been damaged so they can direct supplies and resources accordingly. Doug Stow, a geography professor from San Diego State Univ., is developing a program that uses before-and-after aerial imagery to reveal infrastructure damage in a matter of minutes.

Programming safety into self-driving cars

February 4, 2015 11:21 am | by Aaron Dubrow, NSF | News | Comments

For decades, researchers in artificial intelligence, or AI, worked on specialized problems, developing theoretical concepts and workable algorithms for various aspects of the field. Computer vision, planning and reasoning experts all struggled independently in areas that many thought would be easy to solve, but which proved incredibly difficult.

Rediscovering spontaneous light emission

February 4, 2015 8:06 am | by Lynn Yarris, Lawrence Berkeley National Laboratory | News | Comments

Lawrence Berkeley National Laboratory researchers have developed a nano-sized optical antenna that can greatly enhance the spontaneous emission of light from atoms, molecules and semiconductor quantum dots. This advance opens the door to light-emitting diodes (LEDs) that can replace lasers for short-range optical communications, including optical interconnects for microchips, plus a host of other potential applications.

One-atom-thin silicon transistors hold promise for super-fast computing

February 4, 2015 7:50 am | by Sandra Zaragoza, The Univ. of Texas at Austin | News | Comments

Researchers at The Univ. of Texas at Austin have created the first transistors made of silicene, the world’s thinnest silicon material. Their research holds the promise of building dramatically faster, smaller and more efficient computer chips. Made of a one-atom-thick layer of silicon atoms, silicene has outstanding electrical properties but has until now proved difficult to produce and work with.

Technique doubles the distance of optical fiber communications

February 3, 2015 8:34 am | by Rebecca Caygill, Univ. College London | News | Comments

A new way to process fiber optic signals has been demonstrated by Univ. College London researchers, which could double the distance at which data travels error-free through transatlantic submarine cables. The new method has the potential to reduce the costs of long-distance optical fiber communications as signals wouldn’t need to be electronically boosted on their journey.

Using a single molecule to create a new magnetic field sensor

January 30, 2015 9:16 am | by Univ. of Liverpool | News | Comments

Researchers at the Univ. of Liverpool and Univ. College London have shown a new way to use a single molecule as a magnetic field sensor. In a study, published in Nature Nanotechnology, the team shows how magnetism can manipulate the way electricity flows through a single molecule, a key step that could enable the development of magnetic field sensors for hard drives that are a tiny fraction of their present size.

Building trustworthy big data algorithms

January 30, 2015 8:41 am | by Emily Ayshford, Northwestern Univ. | News | Comments

Much of our reams of data sit in large databases of unstructured text. Finding insights among emails, text documents and Websites is extremely difficult unless we can search, characterize and classify their text data in a meaningful way. One of the leading big data algorithms for finding related topics within unstructured text (an area called topic modeling) is latent Dirichlet allocation (LDA).

Parallelizing common algorithms

January 30, 2015 8:28 am | by Larry Hardesty, MIT News Office | News | Comments

Every undergraduate computer science major takes a course on data structures, which describes different ways of organizing data in a computer’s memory. Every data structure has its own advantages: Some are good for fast retrieval, some for efficient search, some for quick insertions and deletions and so on. Today, hardware manufacturers are making computer chips faster by giving them more cores, or processing units.

Eyeglasses that turn into sunglasses

January 29, 2015 3:52 pm | by American Chemical Society | News | Comments

Imagine eyeglasses that can go quickly from clear to shaded and back again when you want them to, rather than passively in response to changes in light. Scientists report a major step toward that goal, which could benefit pilots, security guards and others who need such control, in ACS Applied Materials & Interfaces.

Qubits with staying power

January 29, 2015 3:41 pm | by Larry Hardesty, MIT News Office | News | Comments

Quantum computers are experimental devices that promise exponential speedups on some computational problems. Where a bit in a classical computer can represent either a 0 or a 1, a quantum bit, or qubit, can represent 0 and 1 simultaneously, letting quantum computers explore multiple problem solutions in parallel. But such “superpositions” of quantum states are, in practice, difficult to maintain.

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