According to the report of the Physicist Organization Network on May 10th, researchers from the United States and France have developed a low-cost one-off paper electronic touchpad, and relevant research reports are published in the magazine "Advanced Materials." The new touchpad is made of metal-coated paper. The surface of the paper is coated with a layer of aluminum with a thickness of about 10 nanometers and covered by a transparent polymer film. It is commonly used to make labels on beer bottles or glossy book covers. Because the price of this coated paper is only 25 cents per square meter, users can throw away the touchpad when they no longer need it. As the lead person of this research, Aaron Mazzeo, a researcher at Harvard University’s George Whitesay Laboratory, said: “We are very interested in designing systems using low-cost materials and giving them high-tech features. The key to the system lies in the fact that the paper used must have the necessary capacitor.†The researchers showed two configurations of the capacitor, one requiring the two sheets to stick together and leaving a horizontal gap between the metal surfaces; the other Only one piece of paper is needed, but a vertical gap is required to cross the conductive surface. Mazio explained: “We used a laser cutter to ablate the conductive layer to form different conductive areas on the metal coated paper. With laser energy, multiple capacitors were cut on the surface of the paper, each corresponding to a touch. A key to the board. These keys will then be associated with external energy sources and circuits. Researchers can use the external electronics to identify the keys that people touch when the current capacity of the touch is increased.†By combining a touchpad with a cardboard box and implanting reusable electronic equipment inside, researchers made an alarm signal box. The user can only be authorized to open the box when typing the correct code, otherwise the chip inside the box will perceive the corresponding interference and refuse to open the box, thereby greatly improving the security of the package. Mazio also said that with the advent of inexpensive, flexible, one-time power supplies and related electronic devices, the era of low-cost paper touchpads will really come. (Zhang Hao) Metal ID Card Badge Reel,YoYo ID Card Badge Holder,Lanyards Id Badge Holder Wintape Measuring Tape Company , https://www.wintapetapemeasure.com
