| Probing Non-Gaussianity in Confined Diffusion of Nanoparticles | |
Xue CD; Zheng X(郑旭); Chen KK; Tian Y; Hu GQ(胡国庆) ; 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.
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| Source Publication | JOURNAL OF PHYSICAL CHEMISTRY LETTERS
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| 2016-02-04 | |
| Volume | 7Issue:3Pages:514-519 |
| ISSN | 1948-7185 |
| Abstract | 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. |
| DOI | 10.1021/acs.jpclett.5b02624 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000369774400024 |
| WOS Keyword | SEGREGATION ; EMBRITTLEMENT ; 1ST-PRINCIPLES ; NICKEL ; IRON ; PHOSPHORUS ; DECOHESION ; SYSTEM ; STEEL ; BORON |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS Subject | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical |
| Funding Organization | The authors acknowledge the National Natural Science Foundation of China (11572335, 11272321, and 11202219) and the Ministry of Science and Technology (2011CB707604) for financial support. And we are grateful to the fruitful discussions with Dr. P-Y Jin. |
| Department | LNM微纳米流体力学 |
| Classification | 一类 |
| Ranking | True |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/58672 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | 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. |
| Recommended Citation 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,&Zheng, X .(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. |
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| a2016-107.pdf（912KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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