f humanoid robots make you a bit queasy — would it help if they had fleshy faces that can smile at you? The uncanny feat is the result of new technology using engineered living skin tissue and human-like ligaments to give robots a more natural smile, according to Tokyo University researchers who unveiled their work this week.
“In this study, we managed to replicate human appearance to some extent by creating a face with the same surface material and structure as humans,” professor Shoji Takeuchi, the team leader, said in a news release. In the process, he added, “we identified new challenges, such as the necessity for surface wrinkles and a thicker epidermis to achieve a more humanlike appearance.” The approach promises to make robots more lifelike — and in the future, the researchers say, similar techniques could also be used on humans, in the cosmetics and plastic surgery industries. Their findings were published in the journal Cell Reports Physical Science.
To overlay and connect the lab-produced skin on a robotic skeleton, a layer of collagen gel containing cultured human dermal fibroblasts (a type of connective tissue cell) binds to an innovative system of tiny V-shaped perforations in the surface, letting the skin move with the underlying structure without tearing or peeling. The work of muscles — creating a smile, and other motions — is done by actuators.
