| Ultrahigh-definition TV: New Quad HD TV chip developed Feb 20th 2013, 17:34 It took only a few years for high-definition televisions to make the transition from high-priced novelty to ubiquitous commodity -- and they now seem to be heading for obsolescence just as quickly. Several manufacturers have recently debuted new ultrahigh-definition, or UHD, models (also known as 4K or Quad HD) with four times the resolution of today's HD TVs. |  | New technique scales up production of graphene micro-supercapacitors Feb 20th 2013, 15:07 While the demand for ever-smaller electronic devices has spurred the miniaturization of a variety of technologies, one area has lagged behind in this downsizing revolution: energy-storage units, such as batteries and capacitors. Engineers have now developed a groundbreaking technique that uses a DVD burner to fabricate micro-scale graphene-based supercapacitors. These micro-supercapacitors can be easily manufactured and integrated into small devices such as next-generation pacemakers. | | Organic electronics: How to make contact between carbon compounds and metal Feb 17th 2013, 18:42 Organic electronics has already hit the market in smart-phone displays and holds great promise for future applications like flexible electroluminescent foils (a potential replacement for conventional light bulbs) or solar cells that convert sunlight to electricity. A reoccurring problem in this technology is to establish good electrical contact between the active organic layer and metal electrodes. Organic molecules are frequently used also for this purpose. | | More evidence needed for scale up of mobile device technology in health Feb 12th 2013, 22:21 Despite the hundreds of pilot studies using mobile health -- also known as 'mHealth'', which describe medical and public health practice supported by mobile devices -- there is insufficient evidence to inform the widespread implementation and scale-up of this technology, according to researchers. | | Online or off, bullying proves harmful Feb 11th 2013, 15:23 Children who are bullied online or by mobile phone are just as likely to skip school or consider suicide as kids who are physically bullied, according to a study led by a criminologist. | | 3-D printing on the micrometer scale Feb 8th 2013, 15:59 Scientists have developed the world's fastest 3D printer of micro- and nanostructures. With this printer, smallest three-dimensional objects, often smaller than the diameter of a human hair, can be manufactured with minimum time consumption and maximum resolution. The printer is based on a novel laser lithography method. | | New brain-test app Feb 8th 2013, 15:58 Smartphones offer a wealth of possibilities for psychological research. A new study shows that an iPhone app yields as reliable results as laboratory tests. | |
