Dr.  Xinghua  Zheng
Institute of Engineering Thermophysics ,CAS,  China

Title: Micro-nano Fiber Thermal Conductivity Measurement

Abstract:

With the rapid development of micro-nano technology, micro-nano thermal functional materials have been more and more concerned and applied, such as carbon nanotubes, carbon fiber, nano-bamboo, micro-nano thermoelectric fiber, multi-cavity phase change fiber. However, due to the influence of the measurement principle, the traditional measurement methods and instruments are mostly designed for block or fluid, and the thermal conductivity measurement of micro-nano single fibers cannot be achieved. This report briefly describes the measurement principle and scope of application of the four commonly used measurement methods, such as 3ω method, T-type method, suspended air island method and suspended H-type method.

Biography:

Zheng Xinghua, Ph.D., Project researcher., received a master's degree from Harbin Institute of Technology in 2005. In 2012, he received his Ph.D. from the Institute of Engineering Thermophysics ,CAS. In the same year, he won the Excellence Award of the Chinese Academy of Sciences and the Wu Zhonghua Excellence Award. He worked at University of California-Riverside, USA. as a visiting scholar during in 2015.3-2016.3. Dr. Zheng has been engaged in the development of micro-nano advanced material thermal properties measurement technology and phase change thermal storage energy research for many years. He has successfully applied the 3ω method to the measurement of micro-nano single fiber, micro-nano film Normal and In-plane orientation, nano-fluid, and nano-powder thermal conductivity. He successfully developed 3ω independent detectors, extended the method to the accurate measurement of thermal conductivity and effusivity of various body materials, and developed corresponding multi-dimensional cross-scale material measuring equipment.He has published more than 20 SCI papers, was authorized 11 invention patents for thermal properties measurement of micro-nano materials and 1 software copyright.