If 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. 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.
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