题 目：Carbon Nanomaterials Enabled Piezoresistive Sensors
报告人：Dr. Tao Liu
High-Performance Materials Institute，Florida State University
时 间：2015年01月05日(星期一) 10:00
地 点：卢嘉锡楼二楼报告厅（202）
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2015.1.4
Dr. Tao Liu is currently an Associate Professor of the Department of Industrial and Manufacturing Engineering, a Principal Investigator of the High-Performance Materials Institute, and an associate faculty member in the newly established materials science and engineering graduate program at Florida State University. He received his Bachelor degree (1992) in Chemical Engineering from Tsinghua University, Beijing, China, and M.S. (1999) and Ph.D. (2002) degrees in Polymer Science and Engineering from Georgia Institute of Technology, Atlanta, Georgia. As a Research Scientist II, he did his post-graduate researches in the Department of Polymer, Textile and Fiber Engineering, Georgia Tech, on carbon nanotube /polymer nanocomposite fibers and films. Before joining Florida State University in 2007, Dr. Tao Liu respectively worked with GE Advanced Materials, Mt. Vernon, Indiana, for processing and product development of polymer optical films, and with Battelle Memorial Institute, Columbus, Ohio, for R&D of nanomaterial enabled functional materials. Dr. Liu’s current research focuses on polymer and carbon nanomaterials based/enabled functional materials (sensors, laser stimulated actuators), energy storage materials (supercapacitors) and light-weight structural materials (nano-structured carbon fibers and films). His research was funded by DARPA, AFOSR, AFRL, ARO and NSF. Dr. Liu has published more than 40 peer-reviewed papers in reputable, high-quality and high-impact journals, which include Advanced Materials, Nano Letters, Macromolecules, Carbon, Chemistry of Materials, etc. The total citations exceed 2,300. In addition to journal papers, Tao Liu also holds 4 US patents. and a few more are under application.
Carbon Nanomaterials Enabled Piezoresistive Sensors
Tao Liu
Associate Professor
High-Performance Materials Institute
FAMU-FSU College Engineering
2525 Pottsdamer Street
Tallahassee, FL 32301
Email: liutao@eng.fsu.edu
Carbon nanomaterials - single-walled carbon nanotubes (SWCNTs) and graphite nanoplatelets (GNPs) show excellent piezoresistivity and promise a variety of novel sensing applications. With dispersing SWCNTs and GNPs in an environmentally benign solvent – water, we developed SWCNT and GNP thin film enabled fiber sensors that can be readily fabricated by a scalable spray coating process. In contrast to the traditional piezoresistive sensors, e.g., metal-foil based strain gage, our fiber sensor possesses tailorable sensing characteristics with a handful of unique properties, which include extensibility/flexibility, non-invasive embeddability, in-line quality monitoring capability, and self-temperature compensation ability. These unique properties along with their intrinsic corrosion resistance and chemical inertness make SWCNT and/or GNP fiber sensor an excellent platform in developing multi-functional sensing system for structural health monitoring of high-performance polymeric composites. To reach this ultimate goal, it is necessary to understand and establish the related processing-structure-property-performance relationship for carbon nanomaterials enabled piezoresistive sensors. In this presentation, I will also introduce the progress we made in the development of sedimentation, dynamic light scattering, and spectroscopic techniques for in-situ structural characterization of carbon nanomaterials (SWCNTs).
