Researchers at the University of Minnesota for the first time successfully printed 3D electronic components directly on human skin. The team uses a cheap, portable, desktop 3D printer that costs less than $400, using a special motion sensing system that prevents printing during printing. Any mistakes made in the hand movements. This technology can be used in the future to install temporary sensors on the human body to detect chemical or biological agents, and even solar cells to charge basic electronic equipment. The team also directs biological cells directly Print on mouse skin.
First, the discrete electronic components are placed on the subject's hand, and then the 3D printed electronic products are printed around these components. As a demonstration of completing the circuit, the LED is successfully powered on. After the printed electronic components complete their functions, they can Easily peel off with a tweezers or rinse off with water.
One of the key breakthroughs in this 3D printing technology is the creation of a special ink made from silver. Unlike other 3D printing inks that require curing at high temperatures and burn hands during printing, the ink can be at room temperature. It is solidified and able to conduct. The team also developed a system to allow the subject's hand to move slightly during 3D printing. The mark was placed on the skin and scanned in 3D to create a map. With computer vision, the printer can Use this diagram to guide the printing process and adjust the movement of small hands in real time.
To further study the application of 3D printing technology on the skin, the same engineering team collaborated with Jakub Tolar, a pediatrician and medical school dean of the University of Minnesota. He is a world-renowned expert in the treatment of rare skin diseases. They use a special type of bio-ink. Wounds on mouse skin print organic cells. In the future, the development of this technology may promote advanced new medical treatment methods to improve wound healing and direct 3D printing of skin grafts, suitable for skin lesions and other skin diseases. crowd.
Source: Tiangong Society