Pressure-sensitive electronic skin restores touch

December 19, 2023

According to the British Daily Mail, scientists have recently developed a pressure-sensing electronic skin that can be used to restore the sensitive tactile sense of amputated patients in the future, and can make robots have human-like sensitive tactile sense as in the science fiction movie "Terminator".


Electronic skin structure

This new material is called "electronic skin" and is a semiconductor nanowire made of silicon. Nanowires are a very slim structure with a diameter one ten thousandth of human hair. At the same time, tactile-sensing artificial skin can also be used in robot manufacturing, enabling the robot to handle various types of objects sensitively. The ultimate goal of the researchers is to use electronic skin to enable those amputated patients with prosthetic limbs to regain near-real touch.

Scientists at the University of California, Beckley printed nanowires on a 7 cm, 18X19 pixel rectangular die. Each pixel contained a transistor made of hundreds of nanowire semiconductors. The nanowire transistor is then combined with the pressure-sensitive rubber so that tactile pressure can be detected.

Scientists have undergone more than 2,000 bending tests and found that rectangular dies under 5 volts can still remain strong. This electronic skin can sense a pressure of 0-15 kPa. This tactile pressure is equivalent to the effect of people typing on the keyboard.

The head of the research team developing the electronic skin is Ali Javey of the University of California, Beckley. He said: "The newly developed electronic skin is very similar to the real human skin, and its advent means that the prosthesis will be installed in the future. Amputee patients will have more living space, and at the same time, robot manufacturing technology will also achieve breakthrough development. "This latest research on electronic skin is now published in the" Natural Materials "magazine published on September 12.

At the same time, scientists from Stanford University in the United States have recently developed an electronic sensor that can sensitively feel the slight tactile behavior like a butterfly landing on a hand. Such sensors can be used in prosthetic electronic skins, robots, touch screens, and car safety devices. Its sensitivity can also be widely used in medical fields including: robotic surgery.

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