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New pathway to valleytronics: Femtosecond laser used to manipulate valley excitons

Tue, 01/27/2015 - 17:24
Researchers have uncovered a promising new pathway to valleytronics, a potential quantum computing technology in which information is coded based on the wavelike motion of electrons moving through certain 2-D semiconductors.

Web surfing to weigh up bariatric surgery options

Tue, 01/27/2015 - 16:10
Obese people considering weight-reducing surgery are only topped by pregnant women when it comes to how often they turn to the Internet for health advice. While most use it to read up on relevant procedures and experiences, some patients actually chooses a surgeon based solely on what they have gleaned from the web, a study concludes.

New search engine lets users look for relevant results faster

Tue, 01/27/2015 - 16:09
Researchers have developed a new search engine that outperforms current ones, and helps people to do searches more efficiently.

Bad weather warnings most effective if probability included, new research suggests

Tue, 01/27/2015 - 15:48
Risk researchers find that the public may respond best to severe weather warnings if they include a probability estimate, an important finding not only for the present but also for the longer-term future as climate change brings more frequent and severe threats.

Researchers use oxides to flip graphene conductivity

Mon, 01/26/2015 - 21:46
A team of researchers has demonstrated a new way to change the amount of electrons that reside in a given region within a piece of graphene, they have a proof-of-principle in making the fundamental building blocks of semiconductor devices using the 2-D material.

Students master math through movement using Kinect for Windows

Mon, 01/26/2015 - 18:52
Significant gains in the understanding of angles and angle measurements by elementary school students are seen in those who performed body-based tasks while interacting with a Kinect for Windows mathematics program.

Electronic circuits with reconfigurable pathways closer to reality

Mon, 01/26/2015 - 17:49
Multitasking circuits capable of reconfiguring themselves in real time and switching functions as the need arises -- this is the promising application stemming from a new discovery. Other potential uses: miniaturizing our electronic devices and developing resilient circuits.

Largest-ever autism genome study finds most siblings have different autism-risk genes

Mon, 01/26/2015 - 17:46
The largest-ever autism genome study reveals that the disorder's genetic underpinnings are more complex than previously thought: Most siblings who have autism have different autism-linked genes. The study's data is part of the historic first upload of approximately 1,000 autism genomes to the Autism Speaks MSSNG portal in Google Cloud Platform. The data will be openly available for global research in order to speed understanding of autism and the development of individualized treatments.

Researchers identify materials to improve biofuel, petroleum processing

Mon, 01/26/2015 - 16:23
Using one of the largest supercomputers in the world, a team of researchers has identified potential materials that could improve the production of ethanol and petroleum products. The discovery could lead to major efficiencies and cost savings in these industries.

Researchers make magnetic graphene

Mon, 01/26/2015 - 14:59
Graphene has many desirable properties. Magnetism alas is not one of them. Magnetism can be induced in graphene by doping it with magnetic impurities, but this tends to disrupt graphene's electronic properties. Now physicists have found a way to induce magnetism in graphene while also preserving graphene's electronic properties. They have accomplished this by bringing a graphene sheet very close to a magnetic insulator -- an electrical insulator with magnetic properties.

Chemists control structure to unlock magnetization and polarization simultaneously

Mon, 01/26/2015 - 14:59
Scientists have controlled the structure of a material to simultaneously generate both magnetization and electrical polarization, an advance which has potential applications in information storage and processing.

How cancer turns good cells to the dark side

Mon, 01/26/2015 - 14:57
Biophysicists reveal how cancer uses notch-signaling pathways to promote metastasis. Their computer models provide a fresh theoretical framework for scientists who study ways to target cancer progression.

Entanglement on a chip: Breakthrough promises secure communications and faster computers

Mon, 01/26/2015 - 14:57
A team of scientists has developed, for the first time, a microscopic component that is small enough to fit onto a standard silicon chip that can generate a continuous supply of entangled photons.

Medical radiation may be reduced to one-sixth with new mathematical discovery

Mon, 01/26/2015 - 13:40
One of this century's most significant mathematical discoveries may reduce the number of measuring points to one-sixth of the present level. This means reduced exposure to radiation and faster medical imaging diagnostics.

New programming language for fast simulations

Mon, 01/26/2015 - 13:39
Programming is a time-consuming process, and it may take many years to develop even a basic simulator. Researchers want to simplify this process. They have created a language similar to the language of mathematics. This allows them to subdivide the work process in such a way that reduces the time it takes to develop a simulator. A mathematician can then focus on what he or she knows best -- the simulator's area of application. Programming experts, on the other hand, can sit and work with "the translator" in order that the translated code can run faster, and they don't have to worry about the application.

Digital storytelling promotes HIV/AIDS education in Africa

Mon, 01/26/2015 - 13:38
Children from poor backgrounds and with no previous technological experience are able to use digital storytelling to share their secrets and fears online, shows a recent doctoral thesis. The author has been involved in various projects in southern Africa focusing on the development of technologies that make it possible for children and youth to share their experiences of HIV and AIDS. Digital storytelling incorporates various types of media, including text, images, animations and sound.

3-D view of Greenland Ice Sheet opens window on ice history

Fri, 01/23/2015 - 19:09
Scientists using ice-penetrating radar have created 3-D maps of the age of the ice within the Greenland Ice Sheet. The new maps will aid future research to understand the impact of climate change on the ice sheet. The Greenland Ice Sheet is the second largest mass of ice on Earth, containing enough water to raise ocean levels by about 20 feet.

Silver nanowires demonstrate unexpected self-healing mechanism: Potential for flexible electronics

Fri, 01/23/2015 - 16:07
Researchers found that silver nanowires can withstand strong cyclic loads, which is a key attribute needed for flexible electronics.

Stalking versus cyberstalking: Effects on victims, their responses compared

Fri, 01/23/2015 - 16:07
The devastating effects of stalking and cyberstalking – harassing or threatening communication via the Internet – are explored in a new study. Key among the findings is that victims of cyberstalking engage in more 'self-protective' behaviours -- such as changing their normal routines or getting a new email address -- than victims of stalking.

Massive chip design savings to be realized

Fri, 01/23/2015 - 13:17
IT researchers have developed a programming language making the massive costs associated with designing hardware more manageable. Chip manufacturers have been using the same chip design techniques for twenty years now. The current process calls for extensive testing after each design step - a massively expensive state of affairs. The newly developed, so-called  functional  programming language makes it possible to prove, in advance, that a design transformation is a hundred percent error-free.