China3D printingNet October 14th, researchers from the University of Cambridge have developed a3D printingThe micro-transparent electronic fiber method is used in a new generation of sensors. This fiber is 100 times thinner than human hair and can be used to make devices that can smell, hear and touch. The results were published in the journal “Science Advances”.
When studying phenomena particularly related to the current COVID-19 pandemic, the report’s first author, Andy Wang, Ph.D. from the Department of Engineering at the University of Cambridge, tried to measure the passage of normal breathing, rapid breathing, and simulation. Breathing moisture leaked from the mask, coughing, etc.To this end, Dr. Yan Yan Shery Huang, also from the Department of Engineering, led the team to conduct3D printingComposite fiber made of silver and semiconducting polymer.
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To create electronic fibers invisible to the human eye” alt=”This figure demonstrates the silver and PEDOT: PSS
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To create electronic fibers that are invisible to the human eye” width=”620″ height=”543″ />
The figure demonstrates the silver and PEDOT: PSS3D printing, To create electronic fibers invisible to the human eye. Image courtesy of Science Advances.
The process developed by the researchers is a form of direct ink writing in which silver or a polymer called poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is passed through an ion gun The etching is deposited on the copper contact pads. Fiber enters the mat. The fiber stretches between the two copper pads, bridging the two electrodes.
To demonstrate the application, the team created a sensor to measure the moisture leaking through the mask. The sensor can determine that the most leaking part from the fabric or surgical mask is from the front, especially when coughing, while the most leaking from the N95 mask is from the top and side. Make sure to wear all masks correctly to help reduce the flow of exhalation.
“Compared with traditional thin-film technology, sensors made of small conductive fibers are particularly useful for volume sensing of 3D fluids and gases, but so far, printing and integrating them into equipment and mass-producing them has always been a challenge. Challenge, Dr. Huang said: “Our fiber optic sensor is lightweight, inexpensive, small and easy to use, so it is possible to turn it into a home test device to enable the public to conduct self-managed tests to obtain information about their environment . “
Uniquely, these sensors can be used to make non-contact, wearable portable breathing sensors that can be connected to smartphones to collect breathing patterns as well as sounds and images. This technology is beyond the scope of respiration sensors. The team suggested that biocompatible fibers with a size similar to biological cells can allow them to guide cell movement and actually measure the process in the form of electrical signals.
Since the fiber is so small that it cannot be seen with the naked eye, the team was able to3D printingOptical fiber to float in the air. As shown in the picture above, the LEDs are suspended from a transparent array made of silver fibers. The researchers’ future work includes multifunctional sensors for mobile health monitoring and biomachine interfaces.
China3D printingOnline reviews: Just like our electronic products3D printingAs detailed in the series, this is only a small part of the research, which may eventually lead to a complete functional object in a single build process.3D printing. Currently, only a few commercial companies provide the basis for this type of technology, including Optomec.This research shows that not only3D printingThis kind of complicated equipment is possible, and it can also advance the existing technology by further reducing the size of the electronic equipment.
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