Researchers believe that enhancing robots with a human-like appearance can significantly improve their ability to communicate and be more appealing. A recent development saw scientists create living human skin on robots that is water-repellent and capable of self-healing. The goal is to make robots more relatable by making them look as human as possible, especially in industries like healthcare and services.
To achieve this, researchers submerged a robotic finger in collagen and human dermal fibroblasts, the main components of human skin. Shoji Takeuchi, a professor at the University of Tokyo, described the process, noting how the skin appeared slightly ‘sweaty’ after being cultured. The robotic finger, powered by an electric motor, exhibited movements resembling a real human finger.
While current silicone skin used on robots can mimic a human appearance, it lacks finer details such as wrinkles and the functionality of human skin. Creating living skin sheets for robots presents challenges, particularly in fitting them onto moving objects with irregular surfaces. To address this, researchers developed a tissue molding method to directly mold skin tissue around the robot, resulting in seamless coverage on the robotic finger.
The success of this approach lies in the natural shrinking properties of the collagen and fibroblast mixture, which conforms tightly to the robot’s surface, providing a uniform base for human cells to adhere to. This layer gives the robot a skin-like texture and moisture-retaining properties. The engineered skin is flexible enough to move with the robotic finger, repels water, and can self-heal with the application of a collagen bandage.
Prof Takeuchi expressed surprise at how well the living skin tissue adhered to the robot’s surface, highlighting its potential to give robots a lifelike appearance and feel. This breakthrough is detailed in the journal Matter, offering new possibilities for integrating human-like features into robotic technology.
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