Numerical and experimental study of radiation induced conductivity change of carbon nanotube filled polymers
文献类型：期刊论文
| 作者 | Liu, Fangjun1; Sun, Yonghai2,3; Sun, Weijie1; Sun, Zhendong4 ; Yeow, John T. W.2,3
|
| 刊名 | NANOTECHNOLOGY
 |
| 出版日期 | 2017-06-23 |
| 卷号 | 28期号:25页码:10 |
| 关键词 | carbon nanotube electrical conductivity radiation sensor 3D model alignment |
| ISSN号 | 0957-4484 |
| DOI | 10.1088/1361-6528/aa701e |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:000402893900001 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/25662]  |
| 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. |
入库方式： OAI收割
来源：数学与系统科学研究院
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