A Japanese researcher made a really cool demo using meta materials, it wasn't perfect but it was pretty cool.
Western researchers are investigating using certain crystals that have been known to give the effect on a small scale, but how viable this is on a large scale is yet to be seen.
Mimicking biological methods is quite interesting. Is it really viable to embed a whole sensory network on a fabric? I am not too sure, but we could certainly use a photosensitive material to map the input from 1 side, although its a lot more complex to emulate with electronics than it is for an animal to do.
Interesting article :P
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Free TC!