Numerical and experimental study of radiation induced conductivity change of carbon nanotube filled polymers

doi:10.1088/1361-6528/aa701e

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	Numerical and experimental study of radiation induced conductivity change of carbon nanotube filled polymers
	Liu, Fangjun 1; Sun, Yonghai 2,3; Sun, Weijie 1; Sun, Zhendong4 ; Yeow, John T. W.2,3
	2017-06-23
发表期刊	NANOTECHNOLOGY
ISSN	0957-4484
卷号	28 期号:25 页码:10
摘要	Measuring the conductivity changes of sensing materials to detect a wide range of radiation energy and dosage is one of the major sensing mechanisms of radiation sensors. Carbon nanotube (CNT) filled composites are suitable for sensing radiation because of the extraordinary electrical properties of CNTs and the CNT-network formed inside the polymer matrix. Although the use of CNT-based nanocomposites as potential radiation sensing materials has been widely studied, there is still a lack of theoretical models to analyze the relationship between electrical conductivity and radiation dosages. In this article, we propose a 3D model to describe the electrical conductivity of CNT-based nanocomposites when being irradiated by ionizing radiation. The Monte Carlo method has been employed to calculate radiation intensity, CNT concentration and alignment's influence on the electrical conductivity. Our simulation shows a better agreement when CNT loading is between the percolation threshold and 3% volume fraction. Radiation experiments have been performed to verify the reliability of our model to illustrate a power function relationship between the electrical conductivity of a CNT-filled polymer and radiation intensity. In addition, the predicted alignment to obtain the best sensitivity for radiation sensing has been discussed to help with CNT-network building in the fabrication process.
关键词	carbon nanotube electrical conductivity radiation sensor 3D model alignment
DOI	10.1088/1361-6528/aa701e
语种	英语
资助项目	Chinese Scholarship Council ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Canada Research Chairs Program
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000402893900001
出版者	IOP PUBLISHING LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/25663
专题	系统科学研究所
通讯作者	Yeow, John T. W.
作者单位	1.South China Univ Technol, Sch Automat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China 2.Univ Waterloo, Dept Syst Design Engn, Waterloo, ON N2L 3G1, Canada 3.Univ Waterloo, Waterloo Inst Nanotechnol, Waterloo, ON N2L 3G1, Canada 4.Chinese Acad Sci, Acad Math & Syst Sci, Key Lab Syst & Control, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Liu, Fangjun,Sun, Yonghai,Sun, Weijie,et al. Numerical and experimental study of radiation induced conductivity change of carbon nanotube filled polymers[J]. NANOTECHNOLOGY,2017,28(25):10.
APA	Liu, Fangjun,Sun, Yonghai,Sun, Weijie,Sun, Zhendong,&Yeow, John T. W..(2017).Numerical and experimental study of radiation induced conductivity change of carbon nanotube filled polymers.NANOTECHNOLOGY,28(25),10.
MLA	Liu, Fangjun,et al."Numerical and experimental study of radiation induced conductivity change of carbon nanotube filled polymers".NANOTECHNOLOGY 28.25(2017):10.