From the early days of robot creation, researchers have been dealing with the “uncanny valley” phenomenon, where something resembles a human but falls short of being completely realistic. A recent breakthrough involves attaching human skin to robots, creating a more lifelike appearance.
The team of researchers from the University of Tokyo, Harvard University, and the International Neurointelligence Research Center have successfully created lifelike skin for robots using live human skin cells, as detailed in a study published in the journal Cell Report Physical Sciences.
Lead author Michio Kawai explained that the skin is created by culturing skin cells from excess tissue with collagen tissue, which is then solidified around the robot using a perforated anchor structure.
Initially, they experimented with attaching skin using tiny hooks, but this caused tears. Instead, they developed a perforated anchor structure that mimics the functionality of real skin, creating a more natural appearance.
To ensure durability and flexibility, holes were drilled in the robot, collagen gel was applied, and skin was attached on top. This method aims to create robots that can self-repair surface damage and adapt to a wide range of tasks.
While the skin lacks blood vessels and must be kept moist to prevent drying out, future research aims to create pathways for nutrients and moisture within the skin tissue. Challenges such as maintaining sterile conditions during development must also be addressed.
In the quest for human-like robots, the team aims to replicate anatomical structures like glands, pores, blood vessels, fat, and nerves to achieve the perfect skin resemblance. As soft robotics technology advances, the potential applications of skin-covered robots expand to various fields.
While still in the demonstration phase for research purposes, this technology could eventually impact areas like skin aging, cosmetics, surgery, and training for surgeons. Despite the current limitations, advancements in robotic skin signal a promising future.
About our experts
Michio Kawai: A PhD student in bioengineering at Harvard University, focusing on research in Cell Report Physical Sciences, Helyon, and Case.
Shoji Takeuchi: Professor of Biohybrid Systems at the University of Tokyo, known for research in Science Robotics, Natural Chemistry, and Nature Communications.
Source: www.sciencefocus.com
