Significant strain-rate dependence of sensing behavior in Ti0_(2)@carbon fibre/PDMS composites for flexible strain sensors  

作　　者：Fan ZHANG Hailong HU Simin HU Jianling YUE 

机构地区：[1]School of Minerals Processing and Bioengineering,Central South Universily,Changsha 410083,China [2]School of Aeronautics&Astronautics,Central South University,Changsha 410083,China [3]Research Center in Intelligent Thermal Structures for Aerospace,Central South University,Changsha 410083,China

出　　处：《Journal of Advanced Ceramics》2021年第6期1350-1359,共10页先进陶瓷（英文）

基　　金：supported by the Start-Up Funds for Outstanding Talents in Central South University through Project Nos.202045007 and 202044017.

摘　　要：Carbon fibre(CF)embedded into elastomeric media has been attracting incredible interest as flexible strain sensors in the application of skin electronics owing to their high sensitivity in a very small strain gauge.To further improve the sensitivity of CF/PDMS composite strain sensor,the relatively low temperature prepared TiO_(2) nanowire via hydrothermal route was employed herein to functionalize CF.The results showed a significant increase in the sensitivity of the TiO_(2)@CF/PDMS composite strain sensors which was reflected by the calculated gauge factor.As the prepared TiO_(2) nanowire vertically embraced the surroundings of the CF,the introduced TiO_(2) nanowire contributed to a highly porous structure which played a predominant role in improving the sensitivity of strain sensors.Moreover,the significant strain rate dependent behavior of TiO_(2)@CF/PDMS strain sensor was revealed when performing monotonic tests at varied strain rate.Therefore,introducing TiO_(2) nanowire on CF offers a new technique for fabricating flexible strain sensors with improved sensitivity for the application of flexible electronics.

关 键 词：COMPOSITES dependence of strain rate sensitivity flexible strain sensors 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TB332[自动化与计算机技术—控制科学与工程]