It can detect direct pressure as well as objects that are hovering close by.
mockups in the past have been able to pick up on factors like temperature, humidity, surface details and force, and turn those into digital signals. In this case, this artificial skin is “iontronic,” which means that it integrates ions and electrodes to try to enable sense.
Specifically, it’s made up of a porous, spongy layer soaked with salty liquid sandwiched between two fabric electrode layers embedded with nickel. These raw components are low-cost, and easily scalable, which the researchers claim makes this type of technology suitable for mass production. The result is a material that is bendy, soft, and conductive.
“We created artificial skin with sensing capabilities superior to human skin. Unlike human skin that senses most information from touching actions, this artificial skin also obtains rich cognitive information encoded in touchless or approaching operations,” corresponding author Yifan Wang, an assistant professor at Nanyang Technological University, in Singapore said in a. “The work could lead to next-generation robotic perception technologies superior to existing tactile sensors.
The design of the device also creates a “fringing electric field” around the edge of the skin. This resulting electric field can sense when objects get close and can also discern the material that the object is made of. For example, it can distinguish between a plastic, metal, and human skin in a small proof-of-concept demo.
As for use cases, the artificial skin can be put onto robot fingers or on a control interface for an electronic game that uses the touch of the finger to move the characters. In their experiment, users played the game Pac-Man, and navigated through electronic maps by interacting with a panel of the artificial skin.
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