Multi-scale analysis of AFM tip and surface interactions
文献类型：期刊论文
| 作者 | Wang HY(汪海英); Hu M(胡明) ; Liu N(刘楠); Xia MF(夏蒙棼); Ke FJ(柯孚久)
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| 刊名 | Chemical Engineering Science
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| 出版日期 | 2007 |
| 卷号 | 62期号:13页码:3589-3594 |
| 通讯作者邮箱 | baiyl@lnm.imech.ac.cn |
| 关键词 | Multiscale Afm Tip Sample Interaction Atomic-Force Microscopy Images |
| ISSN号 | 0009-2509 |
| 通讯作者 | Bai, YL (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100080, Peoples R China. |
| 中文摘要 | Thoroughly understanding AFM tip-surface interactions is crucial for many experimental studies and applications. It is important to realize that despite its simple appearance, the system of tip and sample surface involves multiscale interactions. In fact, the system is governed by a combination of molecular force (like the van der Waals force), its macroscopic representations (such as surface force) and gravitational force (a macroscopic force). Hence, in the system, various length scales are operative, from sub-nanoscale (at the molecular level) to the macroscopic scale. By integrating molecular forces into continuum equations, we performed a multiscale analysis and revealed the nonlocality effect between a tip and a rough solid surface and the mechanism governing liquid surface deformation and jumping. The results have several significant implications for practical applications. For instance, nonlocality may affect the measurement accuracy of surface morphology. At the critical state of liquid surface jump, the ratio of the gap between a tip and a liquid dome (delta) over the dome height (y(o)) is approximately (n-4) (for a large tip), which depends on the power law exponent n of the molecular interaction energy. These findings demonstrate that the multiscale analysis is not only useful but also necessary in the understanding of practical phenomena involving molecular forces. (c) 2007 Elsevier Ltd. All rights reserved. |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | ATOMIC-FORCE MICROSCOPY ; IMAGES |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247769200025 |
| 公开日期 | 2009-08-03 ; 2010-06-13 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/33971]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Wang HY,Hu M,Liu N,et al. Multi-scale analysis of AFM tip and surface interactions[J]. Chemical Engineering Science,2007,62(13):3589-3594. |
| APA | 汪海英,胡明,刘楠,夏蒙棼,&柯孚久.(2007).Multi-scale analysis of AFM tip and surface interactions.Chemical Engineering Science,62(13),3589-3594. |
| MLA | 汪海英,et al."Multi-scale analysis of AFM tip and surface interactions".Chemical Engineering Science 62.13(2007):3589-3594. |
入库方式： OAI收割
来源：力学研究所
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