senses
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Researchers say new development could give artificial skin a wider range of senses
We've seen a number of efforts to build a better artificial skin, or "e-skin," over the years, and a team of researchers from the Technion-Israel Institute of Technology now say they've made a breakthrough that could lead to some of the most sensitive e-skin yet. The key development is a new type of flexible sensor that would not only allow the artificial skin to detect touch, but humidity and temperature as well. Those sensors are comprised of gold-based nanoparticles that are just five to eight nanometers in diameter and laid on top of a substrate -- in their research, the scientists used PET, the type of plastic you'd normally find in soda bottles. That substrate conducts electricity differently depending on the way it is bent, which means researchers can adjust its sensitivity just by increasing its thickness. As you might expect, this is all still in the early stages, but the researchers see plenty of possibilities for the future, from bringing a sense of touch to artificial limbs to using the same technology to monitor stress on bridges.
Genetic engineering lets fruit flies 'smell' light
Scientists in Germany have genetically engineered fruit fly larva to 'smell' blue light -- and apparently it smells like bananas! According to a paper published in Frontiers in Behavioral Neuroscience, researchers at Ruhr-Universitaet-Bochum were able to splice a gene for a light-activated protein into cells in the olfactory system. Depending on which cell was spliced, the larva perceived the blue light as smelling like anything from bananas to marzipan or even glue. The scientists used thin electrodes to detect the light-activated neurons, and it is hoped that research in this area will lead to similar procedures that don't harm living animals. Now that they've perfected modding Drosophila larvae, the scientists say they'd like to move on to adult fruit flies. Which is cool with us -- just as long as they don't repeat Seth Brundle's mistakes.
BrainPort lets you see with your tongue, might actually make it to market
We first saw the crazy BrainPort in 2006, but the intervening time hasn't been wasted by its developers, who've brought the quirky visual aid to the cusp of commercial viability. If you'll recall, the device translates signals from a head-mounted camera to electrical pulses that lightly zap your tongue in response to visual stimuli -- early results have shown people can regain a good bit of their spatial awareness and even read large writing. The next step is FDA approval, which is expected by year's end, meaning that the BrainPort could arrive as early as 2010. There is a steep entry fee though, with prices expected to begin at $10,000, but the very fact you'll be able to buy it is a milestone in our book. Edifying video after the break. [Thanks, Toy]
