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Jellyfish-Inspired Electronic Skin Glows When It Gets Hurt

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Electronic-skin technologies for prosthetics and robots can detect the slightest touch or breeze. But oddly, the sensors that make this possible do not respond effectively to a harmful blow. Now researchers report in ACS Applied Materials & Interfaces the development of a jellyfish-inspired electronic skin that glows when the pressure against it is high enough to potentially cause an injury.

An electronic skin that can mimic the full range of biological skin’s sensitivity has great potential to transform prosthetics and robotics. Current technologies are very sensitive, but only within a narrow range of weak pressures. Under high pressures that could cause damage, the electronic skins’ sensitivity fades. To address this shortcoming, Bin Hu and colleagues at the Huazhong University of Science and Technology turned to the Atolla jellyfish for inspiration. This bioluminescent, deep-sea creature can feel changes in environmental pressure and flashes dramatically when it senses danger.An electronic skin glows when a transparent “W” is pressed onto it, and a voltage is applied (bottom).

Credit: American Chemical Society
Building on the idea of a visual warning in response to a physical threat, the researchers combined electric and optical systems in a novel electronic skin to detect both slight and high-force pressures. They embedded two layers of stretchy, poly-dimethysiloxane, or PDMS, film with silver nanowires. These layers produce an electrical signal in response to slight pressures, such as those created by a breeze or contact with a leaf. Sandwiched in between the silver nanowire electrodes is a PDMS layer embedded with phosphors. This layer kicks in and glows with growing intensity as the physical force increases. The researchers say this approach more closely copies the wide range of pressures the human skin can feel.

The authors acknowledge funding from the National Natural Science Foundation of China, Frontier and Key Technological Innovation Special Foundation of Guangdong Province and the Fundamental Research Funds for the Central Universities of China.

Contacts and sources:
American Chemical Society


Source: http://www.ineffableisland.com/2017/11/jellyfish-inspired-electronic-skin.html



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    • DK

      No it does not simply for this reason, for example I once got ripped off for buying silicone contact lenses, I thought they come with a prescription contract or were in fact durable plastic and due to bad eyesight and pressure sales signed for a single pair whilst on a university break. What use is any form of sensor skin which cannot survive a couple of weeks of use. Reality is the best skin is your own, it repairs and has all the necessary nerves and senses and comes for free, today in Germany a boy has been reported to have 80% of his skin successfully regrafted with cloned tissue with artificial DNA repaired Epidermolysis bullosa, if you can do that 3D printing nerves and blood vessels to feed fatty tissue and a layer of covering skin over an artificial limb is a doddle. It will be far less costly than buying a new skin every month to a year. An athlete would get through one new skin every week.

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