Probing Non-Gaussianity in Confined Diffusion of Nanoparticles
文献类型：期刊论文
| 作者 | Xue CD; Zheng X(郑旭); Chen KK; Tian Y; Hu GQ(胡国庆)
|
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY LETTERS
 |
| 出版日期 | 2016-02-04 |
| 卷号 | 7期号:3页码:514-519 |
| 通讯作者邮箱 | zhengxu@lnm.imech.ac.cn |
| ISSN号 | 1948-7185 |
| 产权排序 | [Xue, Chundong; Zheng, Xu; Hu, Guoqing] Chinese Acad Sci, Inst Mech, Beijing Key Lab Engn Construct & Mechanbiol, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; [Chen, Kaikai; Tian, Yu] Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China |
| 通讯作者 | Zheng, X (reprint author), Chinese Acad Sci, Inst Mech, Beijing Key Lab Engn Construct & Mechanbiol, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 中文摘要 | Confined diffusion is ubiquitous in nature. Ever since the "anomalous yet 0 Brownian" motion was observed, the non-Gaussianity in confined diffusion has been unveiled as an important issue. In this Letter, we experimentally investigate the characteristics and source of non-Gaussian behavior in confined diffusion of nanoparticles suspended in polymer solutions. A time-varied and size-dependent non-Gaussianity is reported based on the non-Gaussian parameter and displacement probability distribution, especially when the nanoparticle's size is smaller than the typical polymer mesh size. This non-Gaussianity does not vanish even at the long-time Brownian stage. By inspecting the displacement autocorrelation, we observe that the nanoparticle-structure interaction, indicated by the anticorrelation, is limited in the short-time stage and makes little contribution to the non-Gaussianity in the long-time stage. The main source of the non-Gaussianity can therefore be attributed to hopping diffusion that results in an exponential probability distribution with the large displacements, which may also explain certain processes dominated by rare events in the biological environment. |
| 分类号 | 一类 |
| 类目[WOS] | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 关键词[WOS] | SEGREGATION ; EMBRITTLEMENT ; 1ST-PRINCIPLES ; NICKEL ; IRON ; PHOSPHORUS ; DECOHESION ; SYSTEM ; STEEL ; BORON |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1021/acs.jpclett.5b02624 |
| 语种 | 英语 |
| WOS记录号 | WOS:000369774400024 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/58672]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Xue CD,Zheng X,Chen KK,et al. Probing Non-Gaussianity in Confined Diffusion of Nanoparticles[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2016,7(3):514-519. |
| APA | Xue CD,Zheng X,Chen KK,Tian Y,&Hu GQ.(2016).Probing Non-Gaussianity in Confined Diffusion of Nanoparticles.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,7(3),514-519. |
| MLA | Xue CD,et al."Probing Non-Gaussianity in Confined Diffusion of Nanoparticles".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 7.3(2016):514-519. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。