Ionic skin appeared, which is indistinguishable from the real one. It easily passes current

Unlike smart skin made from plastics and metals, hydrogels are as soft as real skin.

leather. So the prosthesis or robot arm will feel more natural.

Hydrogels can generate voltage when touched, but scientists have not fully understood how this happens. Therefore, a team of researchers from UBC decided to study this process.

“The principle of operation of hydrogel sensors isin that they generate voltage and current in response to stimuli - pressure or touch. What we call the piezoelectric effect. But we didn’t know exactly how these stresses are created,” said Yuta Dobashi, lead author of the study.

Working under the guidance of a UBC researcherDr. John Madden, Dobashi developed hydrogel sensors containing salts with positive and negative ions of different sizes. He and his colleagues used magnetic fields to track exactly how ions move when pressure is applied to the sensor.

“When you apply pressure to the gel, itdistributes ions in the liquid at different speeds and an electrical signal is obtained. Positive ions, which tend to be smaller, move faster than larger negative ions. Therefore, they are unevenly distributed, this creates an electric field, which makes the piezo ion sensor work, ”- lead author of the study, Yuta Dobashi.

The authors said that with the help of their discovery, it will be possible to create sensors that directly interact with cells and the nervous system.

Read more:

Astronomers have found a planet near the Earth: it has a very strange orbit

Fixed instability at the beginning of the solar system: this points to the Ninth planet

The digital assistant assesses the patient's condition in the emergency room in 5 minutes