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More skin-like, electronic skin that can feel
Nov 24, 2020
What if we didn't have skin? We would have no sense of touch, no detection of coldness or pain, leaving us inept to respond to any situation. The skin is not just a protective shell for organs, but rather a signaling system for survival that provides information on the external stimuli or temperature, or a meteorological observatory that reports the weather. Tactile receptors, tightly packed throughout the skin, feel the temperature or mechanical stimuli - such as touching or pinching - and convert them into electrical signals to the brain.
The challenge for electronic skin, being developed for use in artificial skins or humanlike robots like the humanoids, is to make it feel the temperatures and movements like how human skin feels them as much as possible. So far, there are electronic skins that can detect movement or temperature separately, but none are able to recognize both simultaneously like the human skin.
A joint research team consisting of POSTECH professor Unyong Jeong and Dr. Insang You of the Department of Materials Science and Engineering, and Professor Zhenan Bao of Stanford University have together developed the multimodal ion-electronic skin that can measure the temperature and mechanical stimulation at the same time. The research findings, published on November 20th edition of Science, are characterized by making very simple structures through applying special properties of the ion conductors.
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