This innovative prototype allows robots to display smiles and other facial expressions more realistically than ever before.
By applying techniques inspired by the structure of human tissues, a team from the University of Tokyo has created artificial skin that resembles human skin in terms of flexibility and texture. Although the first prototype looks more like a gummy bear than a human, the researchers are optimistic about the potential of this technology for the future of humanoids.
In addition to its aesthetic similarity, the developed skin is self-regenerating, avoiding the cracks and breaks often seen in conventional materials. This promising advancement suggests that it is possible to create increasingly realistic and functional humanoids that can exhibit more natural movements and genuine facial expressions, thereby opening new horizons for interaction between humans and robots.
The artificial skin is produced in the lab from living cells. Alongside its softness akin to real skin, the scientists claim it can regenerate itself if cut.

The efficient attachment of skin to the faces of robots was a challenge. The team tried using mini-hooks as “anchors,” but found that these hooks damaged the skin when the robot moved.
Unlike the natural adhesion of human skin to underlying structures via bands made of collagen and elastin, replicating this process in robots has proven difficult.
To address the issue of securing the artificial skin to the robots, the researchers pursued an innovative approach. They drilled several small holes into the robot and applied a collagen gel. They then placed a layer of artificial skin over this gel.
The gel fills the holes and acts as an adhesive for the skin on the robot’s face. This technique is akin to a type of plastic surgery for robots, where the structure mimics the bands of human skin.
Shoji Takeuchi, the lead researcher, explained, “By mimicking the structures of human skin bands and using specially designed V-shaped holes in solid materials, we have found an effective way to attach the skin to complex structures.” He emphasized that the natural flexibility of the skin, combined with this robust attachment method, allows the skin to move harmoniously with the robot’s mechanical components without tearing or detaching.
The latest research findings were published in the renowned scientific journal Cell Reports Physical Science. However, the researchers stress that many more years of testing and refinement are needed before this technology can be practically and widely integrated into everyday life.
Shoji Takeuchi highlights that one of the greatest challenges is generating facial expressions in robots that closely resemble human ones. This requires integrating advanced actuators or “artificial muscles” into the robot’s structure.
In addition to its potential impact on robotics and automation, the study promises important contributions in other fields. For example, it could have applications in research on skin aging, the development of advanced cosmetics, and even surgical procedures, including plastic surgery. These additional perspectives not only showcase the revolutionary potential of artificial skin technology but also its relevance across various interdisciplinary fields in science and medicine.
The current findings published in Cell Reports Physical Science mark a significant advancement in integrating technology and biology. Despite this, researchers emphasize that many more years of testing and refinement will be required before this technology can be widely applied in everyday settings.
Shoji Takeuchi points out a key challenge: creating realistic facial expressions in robots, which requires the development of advanced actuators or “artificial muscles” to accurately mimic human facial movements.
Beyond their potential impact on advanced robotics, this technology could revolutionize fields such as skin aging research, the development of cutting-edge cosmetics, and surgical procedures, including plastic surgery. These applications illustrate not only the versatility of artificial skin but also its transformative potential across various scientific and medical disciplines.
As research continues to progress, these innovations are expected to enhance not only the functionality of humanoid robots but also contribute significantly to quality of life and human health.
Japan is renowned for its leadership and technological innovation, particularly in robotics. Over the decades, the country has developed advanced robots for a variety of applications, from household assistants to industrial and medical products.
One area where Japan excels is in the development of humanoid robots that physically and functionally resemble humans. These robots are designed not only to perform complex tasks but also to interact naturally with people in various environments.
Moreover, Japan is investing heavily in supportive robotics to assist its aging population in a country with one of the highest age demographics in the world. Robots designed for home care and support in hospitals exemplify this by providing physical and emotional assistance to those in need.
Another notable feature of Japanese robotic technology is its application in industrial sectors, such as factory automation and the production of vehicles and electronics. Precise and efficient robots are employed to enhance productivity and ensure high-quality standards in complex industrial processes.
In summary, Japan continues to hold a global leading position in robotics research and development, constantly pushing technological boundaries to improve daily life and advance various areas of industry and society.
In addition to humanoid robots and industrial robotics, Japan is also a leader in artificial intelligence (AI) research applied to robotics. This combination enables the creation of more autonomous and adaptable machines, as well as advancements in areas like autonomous vehicles, drones, and even disaster response, where robots are used for rescue and rebuilding operations. This diversity of applications reflects Japan’s ongoing commitment to technological innovation and its quest for solutions that can globally benefit both the industrial sector and human welfare.