title: Self-Powered Triboelectric Micro Liquid/Gas Flow Sensor for Microfluidics.
abstract: Liquid and gas flow sensors are important components of the micro total analysis systems (μTAS) for modern analytical sciences. In this paper, we proposed a self-powered triboelectric microfluidic sensor (TMS) by utilizing the signals produced from the droplet/bubble via the capillary and the triboelectrification effects on the liquid/solid interface for real-time liquid and gas flow detection. By alternating capillary with different diameters, the sensor's detecting range and sensitivity can be adjusted. Both the relationship between the droplet/bubble and capillary size, and the output signal of the sensor are systematically studied. By demonstrating the monitoring of the transfusion process for a patient and the gas flow produced from an injector, it shows that TMS has a great potential in building a self-powered micro total analysis system.
authors.affiliation: Department of Applied Physics, Chongqing University , Chongqing 400044, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Chen
authors.affiliation: Department of Applied Physics, Chongqing University , Chongqing 400044, China.|School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.
authors.forename: Hengyu
authors.initials: H
authors.lastname: Guo
authors.affiliation: Department of Applied Physics, Chongqing University , Chongqing 400044, China.
authors.forename: Jiangeng
authors.initials: J
authors.lastname: Zheng
authors.affiliation: Department of Applied Physics, Chongqing University , Chongqing 400044, China.
authors.forename: Yingzhou
authors.initials: Y
authors.lastname: Huang
authors.affiliation: Department of Applied Physics, Chongqing University , Chongqing 400044, China.
authors.forename: Guanlin
authors.initials: G
authors.lastname: Liu
authors.affiliation: Department of Applied Physics, Chongqing University , Chongqing 400044, China.
authors.forename: Chenguo
authors.initials: C
authors.lastname: Hu
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.
authors.forename: Zhong Lin
authors.initials: ZL
authors.lastname: Wang
keywords: microfluidic sensor; self-powered system; triboelectric