New Material Could Give Robots 'Skin' with a Sense of Touch
2021-07-15
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1Researchers in Singapore have developed an electronic material that helps robots sense touch and nearby objects.
2The material is a kind of foam: a solid substance that is filled with air and is soft.
3And the foam has another useful quality.
4It repairs itself when damaged, much like human skin.
5The material is called AiFoam, which is short for artificially innervated foam.
6To innervate means to supply with nerves.
7In robots, AiFoam would gather information from nearby and send it to a computer controlling the robot.
8AiFoam is a stretchy polymer combined with a mixture that lowers surface tension.
9This means that if you cut the material, it can return easily into one piece.
10Benjamin Tee is a lead researcher on the new material at the National University of Singapore.
11He said there are many uses for such a material "especially in robotics and prosthetic devices,
12where robots need to be a lot more intelligent when working around humans."
13To copy the human sense of touch, the researchers mixed microscopic pieces of metal into the material.
14Then they added very small electrical connections underneath the surface of the foam.
15Tee said that when there is pressure on the material, the metal particles get closer.
16The movement changes their electrical properties.
17The electrical connections sense these changes and send information about them to a computer, which then tells the robot what to do.
18"When I move my finger near the sensor, you can see the sensor is measuring the changes of my electrical field and responds accordingly to my touch," he said.
19The robotic hand senses not only the amount but also the direction of the force placed on it.
20That could make robots more intelligent and responsive.
21Tee said AiFoam is the first material of its kind to combine self-healing properties with nearness and pressure sensing.
22After spending over two years developing it, Tee and his team hope the material can be put to use within five years.
23The material will let "prosthetic users ... have more intuitive use of their robotic arms," he said.
24I'm John Russell.
1Researchers in Singapore have developed an electronic material that helps robots sense touch and nearby objects. 2The material is a kind of foam: a solid substance that is filled with air and is soft. And the foam has another useful quality. It repairs itself when damaged, much like human skin. 3The material is called AiFoam, which is short for artificially innervated foam. To innervate means to supply with nerves. In robots, AiFoam would gather information from nearby and send it to a computer controlling the robot. 4It 'heals' itself 5AiFoam is a stretchy polymer combined with a mixture that lowers surface tension. This means that if you cut the material, it can return easily into one piece. 6Benjamin Tee is a lead researcher on the new material at the National University of Singapore. He said there are many uses for such a material "especially in robotics and prosthetic devices, where robots need to be a lot more intelligent when working around humans." 7To copy the human sense of touch, the researchers mixed microscopic pieces of metal into the material. Then they added very small electrical connections underneath the surface of the foam. 8It senses nearby objects 9Tee said that when there is pressure on the material, the metal particles get closer. The movement changes their electrical properties. The electrical connections sense these changes and send information about them to a computer, which then tells the robot what to do. 10"When I move my finger near the sensor, you can see the sensor is measuring the changes of my electrical field and responds accordingly to my touch," he said. 11The robotic hand senses not only the amount but also the direction of the force placed on it. That could make robots more intelligent and responsive. 12Tee said AiFoam is the first material of its kind to combine self-healing properties with nearness and pressure sensing. After spending over two years developing it, Tee and his team hope the material can be put to use within five years. 13The material will let "prosthetic users ... have more intuitive use of their robotic arms," he said. 14I'm John Russell. 15Travis Teo and Lee Ying Shan reported on this story for Reuters. Jill Robbins adapted it for Learning English. Mario Ritter, Jr. was the editor. 16__________________________________________________________ 17Words in This Story 18polymer - n. a chemical compound that is made of small molecules that are arranged in a simple repeating structure to form a larger molecule 19artificially -adv. not produced in a natural way; manufactured by people 20prosthetic - n. an artificial device that replaces a missing or injured part of the body 21accordingly - n. in a way that suits the facts, needs, or requirements of a situation 22intuitive - adj. easily and quickly learned or understood 23What do you think of the new robot technology? We want to hear from you. Write to us in the Comments Section.