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New electronic skin could give robots human-like touch

A new type of electronic skin whose sense of touch rivals that of humans could allow robots to identify an object by the way it feels.

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This handout photo shows an optical image of a fully fabricated e-skin device with nanowire active matrix circuitry. Each dark square represents a single pixel. Researchers have engineered electronic skin that can sense touch, in a major step towards next-generation robotics. The lab-tested material responds to almost the same pressures as human skin and with the same speed.

Newscom/File

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A new type of artificial skin with a sense of touch that rivals the human variety could lead to next-generation robotic and prosthetic devices.

When covered with the electronic skin, or "e-skin" as the researchers call it, robots would be able to touch and move objects with the appropriate force. For example, the e-skin would allow the robot to sense the difference between an egg and a frying pan and adjust the force of its grip accordingly.

So far the researchers have made a prototype device and shown that the material can detect a wide range of pressures – 0 to 15 kilopascals, which accounts for typical daily activities.

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“There have been a lot of advances in robotics. But one of the issues is the ability to be able to sense an object, and, knowing whether it’s hard or soft, [and] how to be able to grab it,” said lead study researcher Ali Javey, a professor at the University of California at Berkeley.

“If we ever wanted a robot that could unload the dishes, for instance, we'd want to make sure it doesn't break the wine glasses in the process."

Previous attempts to make artificial skin have relied on organic materials, which eat up a lot of power. This means heavy batteries, which isn’t ideal for portable devices, such as robots and prosthetic limbs.

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