Next Up For Robots: Flexible ‘Skin’ To Provide Sense Of Touch

TN Note: The quest to make robots more ‘human’ is in full gear. Technocrats say responsive skin gives a robot human-like qualities, and creates a visual representation that is more easily accepted by humans. Transhumans value cyborg technology because such a humanoid device might one day play host to their digital representations. 

Robots don’t have to be made of metal – at least not on the outside. A group of researchers at Cornell University and the Italian Institute of Technology created a robot without a rigid skeleton and covered it in stretchy, luminescent “skin” that gives the robot a sense of touch. In addition to making robots softer and less intimidating, the material could also equip robots with the senses of touch and proprioception, or knowing where their bodies are without looking.

If you close your eyes and touch your finger to your nose, your sense of proprioception is at work helping you keep track of where your limbs are and making sure you don’t poke yourself in the eye. For robots, that same sense could be judged through electrical capacitance. An electric field runs through the robot skin, which changes as the skin is stretched, rolled, and flattened. By measuring the changes in that electric field a robot could judge pressure and position, giving it sensitivity to light touches and hard impacts.

The electric field also causes the skin to glow, creating different colors depending on whether elements such as magnesium or copper are present in the material.

“This skin could allow soft robots to make themselves more or less visible in their environment, or colorize themselves to appear more friendly or aggressive,” Rob Shepherd, director of the Organic Robotics Lab at Cornell, told Popular Mechanics. That could mean soft robots that change color as their own status changes – getting redder as their batteries near depletion, for example – or in response to perceived changes in their environment.

Read full story here…

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