ScienceDaily: Top Technology News

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• Astronomers find clues to decades-long coronal heating mystery
• Zoomable holograms pave the way for versatile, portable projectors
• An optical switch based on a single nano-diamond
• Method of recording brain activity could lead to mind-reading devices, Stanford scientists say
• New analysis of US elementary school mathematics finds half-century of problematic 'strands' structure
• Device speeds concentration step in food-pathogen detection
• World record: Wireless data transmission at 100 Gbit/s
• Newly discovered mechanism propels micromotors
• New micro water sensor can aid growers
• Bending world's thinnest glass shows atoms' dance
• Rosetta: 100 days for comet-chasing mission to wake-up

Astronomers find clues to decades-long coronal heating mystery Posted: 15 Oct 2013 04:16 PM PDT Scientists found evidence that magnetic waves in a polar coronal hole contain enough energy to heat the corona and moreover that they also deposit most of their energy at sufficiently low heights for the heat to spread throughout the corona. The observations help to answer a 70-year-old solar physics conundrum about the unexplained extreme temperature of the Sun's corona -- known as the coronal heating problem.

Zoomable holograms pave the way for versatile, portable projectors Posted: 15 Oct 2013 04:14 PM PDT Imagine giving a presentation to a roomful of customers when suddenly the projector fails. You whip out your smartphone, beam your PowerPoint presentation onto the conference room screen, and are back in business within seconds. This career-saving application and others like it are the promise of a new generation of ultra-small projectors. Researchers have now taken an important step toward making such devices more versatile and easier to integrate into portable electronic devices.

An optical switch based on a single nano-diamond Posted: 15 Oct 2013 09:36 AM PDT A recent study led by researchers in Spain demonstrates that a single nano-diamond can be operated as an ultrafast single-emitter optical switch operating at room temperature.

Method of recording brain activity could lead to mind-reading devices, Stanford scientists say Posted: 15 Oct 2013 09:35 AM PDT A brain region activated when people are asked to perform mathematical calculations in an experimental setting is similarly activated when they use numbers -- or even imprecise quantitative terms, such as "more than" -- in everyday conversation, according to a new study.

New analysis of US elementary school mathematics finds half-century of problematic 'strands' structure Posted: 15 Oct 2013 08:40 AM PDT An expert argues that the "strands" of structure used in mathematics education have significantly weakened the effectiveness of US school mathematics.

Device speeds concentration step in food-pathogen detection Posted: 15 Oct 2013 08:39 AM PDT Researchers have developed a system that concentrates foodborne salmonella and other pathogens faster than conventional methods by using hollow thread-like fibers that filter out the cells, representing a potential new tool for speedier detection.

World record: Wireless data transmission at 100 Gbit/s Posted: 15 Oct 2013 07:38 AM PDT Extension of cable-based telecommunication networks requires high investments in both conurbations and rural areas. Broadband data transmission via radio relay links might help to cross rivers, motorways or nature protection areas at strategic node points, and to make network extension economically feasible. Researchers have now presented a method for wireless data transmission at a world-record rate of 100 gigabits per second.

Newly discovered mechanism propels micromotors Posted: 15 Oct 2013 07:36 AM PDT Scientists studying the behavior of platinum particles immersed in hydrogen peroxide may have discovered a new way to propel microscopic machines.

New micro water sensor can aid growers Posted: 15 Oct 2013 07:36 AM PDT Researchers have developed a microfluidic water sensor within a fingertip-sized silicon chip that is a hundred times more sensitive than current devices. The researchers are now completing soil tests and will soon test their design in plants, embedding their "lab on a chip" in the stems of grape vines, for example. They hope to mass produce the sensors for as little as $5 each. The new sensor will benefit crop growers, wine grape and other fruit growers, food processors and even concrete makers.

Bending world's thinnest glass shows atoms' dance Posted: 15 Oct 2013 06:56 AM PDT Watch what happens when you bend and break the world's thinnest glass. This glass was recently featured in the Guinness Book of World Records and is made of the same compounds as everyday windowpanes. Scientists used an electron microscope to bend, deform and melt the one-molecule-thick glass. These are all things that happen just before glass shatters, and for the first time, the researchers have directly imaged such deformations and the resulting "dance" of rearranging atoms in silica glass.

Rosetta: 100 days for comet-chasing mission to wake-up Posted: 11 Oct 2013 08:11 AM PDT The European Space Agency's comet-chasing mission Rosetta will wake up in 100 days' time from deep-space hibernation to reach the destination it has been cruising towards for a decade.

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