[Abstract] U.S. universities have recently developed new technologies that change the shape of plastic films through light irradiation and achieve a specific sequence. They can be widely used in the field of aseptic processing in the future. The Verge Chinese Station reported on March 7 Scientists have discovered a new kind of "origami" method, which is completely hands-free or physical. The secret is light. "Scientific Progress" magazine recently published an article detailing how researchers can use various light rays to fold a plastic sheet into any shape. The inventor of this technology is Professor Michael Dickey of North Carolina State University, USA. The experiment used Shrinky Dink plastic plate, a kind of flexible plastic material often used in children's toys. Its characteristic is that it will shrink to a small size after heating. Hard film, but the color and shape will not change. The key to this technology is to achieve different folding sequences through different colors, which is very interesting. First, it is necessary to use an ink jet printer to print colors on corresponding locations on a plastic sheet, and different colors absorb light of different wavelengths to achieve a specific order. For example, blue ink absorbs red light, while yellow ink absorbs blue light. Through this principle, using a light emitter to illuminate the light at the corresponding print color position, the plastic sheet will absorb the wavelength more efficiently to generate heat, causing the plastic sheet to be deformed and bent to a certain angle and shape without the need for microwaves or other. heating method. Of course, the video we see is accelerated, and the actual deformation speed is slower. So what is the practical significance of this technology? The answer is to achieve touch-free operation. For example, in the electronic or medical field, it is no longer necessary to use bacteria-filled hands or robotic arms to operate. Of course, the current optical heating technology is still in its infancy and needs to be able to handle more materials and have higher efficiency. (Author: Rachel Becker compiled: Kevin) Click to view original english ã€The relevant rights in the Chinese language of The Verge's works in the United States are owned by Tencent Corporation. Without authorization, they may not be reproduced or excerpted. 】
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