3-D Printed Flexible Electronics and Sensors Using Carbon Nanotube Ink
At FSU, we have developed a breakthrough process for scalable and low-cost functionalization of carbon nanotubes with tailored functionality. A provisional patent application was filed in October 2017. This technology enables the preparation of highly concentrated CNT ink for 3-D printing and printed electronics and sensors. As an example, while typical CNT ink has a CNT content < 0.5 wt%, our ink concentration can be tuned at will and can reach as high as 10 wt%. Such flexibility allows for our high quality printing process and superior device performance. This superior performance is characterized by a gauge factor (GR) that can reach ~3000; one to two orders of magnitude higher than any printed strain sensor from any other inks in the world. We have further demonstrated that our devices can be used as sensors to detect human motion. We strongly believe this technology will revolutionize printed electronics and sensors.