Release date: 2017-03-08
Recently, a research team at the California Institute of Technology and the Federal Institute of Technology in Zurich developed an artificial skin that senses temperature changes. The material can be transplanted onto the prosthesis to restore the temperature sensing ability of the amputee, and can also be applied to the first-aid bandage to alert the medical staff to the temperature rise caused by the wound infection. A paper on the material was published in the February 1st issue of Science Robotics.
When the team made synthetic wood, it discovered a material that was electrically responsive to changes in laboratory temperature, with the temperature-sensitive component being pectin. As a gelling agent, pectin is widely used in the food industry and is easy to extract and inexpensive. They eventually used pectin and water to create a thin, transparent, flexible film that can be as thin as 20 microns, the diameter of a human hair.
Existing electronic skin can sense temperature changes of less than one-tenth of a degree Celsius in the range of 5 degrees Celsius, and the new skin can sense changes that are an order of magnitude smaller, and in the range of 45 degrees Celsius, have more than other electronic skins. Two orders of magnitude greater responsiveness. Next, the team plans to further improve the manufacturing process of artificial skin to a temperature of 90 degrees Celsius to suit industrial applications.
Source: Ministry of Science and Technology
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