A transparent, flexible and sensitive pressure sensor developed by a research team in Japan and the United States allows medical personnel to detect breast cancer using a pressure-sensitive rubber glove on the screen one day in the future. Conventional pressure sensors are flexible enough to accommodate soft surfaces such as human skin, but once they are twisted or wrinkled, they cannot accurately measure changes in pressure, making them unsuitable for complex and moving surfaces. In addition, due to current production methods, it is difficult to make their thickness less than 100 microns. To solve these problems, an international research team led by Dr. Sungwon Lee and Professor and Professor Takao Someya of the Graduate School of Engineering at the University of Tokyo invented a nanofiber type pressure sensor capable of measuring the pressure distribution of a circular surface such as an inflatable balloon, even if the radius of curvature It can still maintain its sensing accuracy when it reaches 80 microns, which is equivalent to twice the width of human hair. The sensor is approximately 8 microns thick and can measure pressures of 144 sites at a time. The device shown in this study consists of an organic transistor, an electronic switch made of carbon and oxy organic materials, and a pressure sensitive fiber structure. Carbon nanotubes and graphene are separately added to the elastic polymer to form nanofibers having a diameter of 300 to 700 nm, and then they are entangled with each other to form a transparent, thin, lightweight porous structure. “We also tested our pressure sensors for detecting the performance of artificial blood vessels and found that it can detect small pressure changes and pressure propagation rates,†says Lee. He continues, “Flexible electronics have great potential to be implantable and wearable devices. I know that many groups are developing flexible sensors that can measure pressure, but they are not suitable for measuring real objects because they Extremely sensitive to deformation. This is my main motivation, and I think we have been able to solve this problem effectively." Heat Sealing Machine,Ultrasonic Sealing Machine,Veterinary Sealing Machine,Veterinary Filling Sealing Machine ZHEJIANG FOMOS MEDICAL TECHNOLOGY CO.,LTD. , https://www.ifomos.com
Transparent and flexible pressure sensor: gloves that can detect tumors and diagnose breast cancer