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Saturday, November 16, 2013

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News

Nature pulls a fast one on astronomers: Two galaxies caught masquerading as one

Posted: 15 Nov 2013 05:18 PM PST

What might look like a colossal jet shooting away from a galaxy turns out to be an illusion. New data from the National Science Foundation's Karl G. Jansky Very Large Array (VLA) reveal that two galaxies, one lying behind the other, have been masquerading as one.

Overcoming brittleness: New insights into bulk metallic glass

Posted: 15 Nov 2013 12:45 PM PST

Researchers have found a bulk metallic glass based on palladium that's as strong as the best composite bulk metallic glasses and comparable to steel, aluminum and titanium.

Algorithm identifies individual grains in planetary regolith

Posted: 15 Nov 2013 10:03 AM PST

Researchers have developed an image analysis and segmentation algorithm specifically to aid planetary scientists with the task of analyzing soil samples taken by Mars rovers.

Whither the teakettle whistle

Posted: 15 Nov 2013 08:15 AM PST

The source and mechanism of a whistling kettle has never been fully described scientifically; acknowledging the vibrations made by the build-up of steam escaping through two metal spout plates is about as far as the explanation went. That wasn't enough for engineers who, through a series of experiments, have produced the world's first accurate model of the whistling mechanism inside the classic stovetop kettle.

Variation of halogens in Martian soil calls for an atmosphere-surface cycle

Posted: 15 Nov 2013 07:47 AM PST

Scientists have assessed the details of halogen variability and an unusual process that may influence it. The group investigated the potential for an existing halogen cycle on Mars, which would alter the current paradigm of halogens distributed mostly by water-related processes.

New hologram technology created with tiny nanoantennas

Posted: 15 Nov 2013 06:49 AM PST

Researchers have created tiny holograms using a "metasurface" capable of the ultra-efficient control of light, representing a potential new technology for advanced sensors, high-resolution displays and information processing.

Organic lights and solar cells straight from the printer

Posted: 15 Nov 2013 06:44 AM PST

Flickering façades, curved monitors, flashing clothing, fluorescent wallpaper, flexible solar cells – and all printable. This is no make-believe vision of the future; it will soon be possible using a new printing process for organic light-emitting diodes.

Revisiting quantum effects in micro- and nano-electromechanical devices

Posted: 15 Nov 2013 06:43 AM PST

New calculations shows that the influence of quantum effects on the operating conditions of nanodevices has, until now, been overestimated. Micro- and nano-electromechanical devices, referred to as MEMS and NEMS, are ubiquitous. These nanoscale machines with movable parts are used, for example, to trigger cars' airbags following a shock. They can also be found in smartphones, allowing them to detect how to adequately display the screen for the viewer. The trouble is that, as their size decreases, forces typically experienced at the quantum level start to matter in these nanodevices.

Wireless power transfer for electric vehicles

Posted: 14 Nov 2013 09:22 AM PST

Engineering researchers have developed new technology and techniques for transmitting power wirelessly from a stationary source to a mobile receiver -- moving engineers closer to their goal of creating highway "stations" that can recharge electric vehicles wirelessly as the vehicles drive by.
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