Knowledge Management System of Institue of Mechanics, CAS
| Growth of liquid bridge in AFM | |
Wei Z(魏征); Zhao YP(赵亚溥) ; Zhao, YP (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100080, Peoples R China.
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| Source Publication | Journal of Physics D-Applied Physics
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| 2007 | |
| Volume | 40Issue:14Pages:4368-4375 |
| ISSN | 0022-3727 |
| Abstract | Capillary forces are dominant in adhesive forces measured with an atomic force microscope (AFM) in ambient air, which are thought to be dependent on water film thickness, relative humidity and the free energy of the water film. In this paper, besides these factors, we study the nature of the 'pull-off' force on a variety of atmospheres as a function of the contact time. It is found that capillary forces strongly depend on the contact time. In lower relative humidity atmosphere, the adhesion force is almost independent of the contact time. However, in higher relative humidity, the adhesion force increases with the contact time. Based on the experiment and a model that we present in this paper, the growth of the liquid bridge can be seen as undergoing two processes: one is water vapour condensation; the other is the motion of the thin liquid film that is absorbed on the substrate. The experiment and the growth model presented in this paper have direct relevance to the working mechanism of AFM in ambient air. |
| Keyword | Atomic-force Microscope Capillary Condensation Adhesion Forces Water Adsorption Silicon Mica Pressure Surfaces Films |
| DOI | 10.1088/0022-3727/40/14/036 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000247930400037 |
| WOS Keyword | ATOMIC-FORCE MICROSCOPE ; CAPILLARY CONDENSATION ; ADHESION FORCES ; WATER ; ADSORPTION ; SILICON ; MICA ; PRESSURE ; SURFACES ; FILMS |
| WOS Research Area | Physics |
| WOS Subject | Physics, Applied |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/33947 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Zhao, YP (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Wei Z,Zhao YP,Zhao, YP . Growth of liquid bridge in AFM[J]. Journal of Physics D-Applied Physics,2007,40,14,:4368-4375. |
| APA | 魏征,赵亚溥,&Zhao, YP .(2007).Growth of liquid bridge in AFM.Journal of Physics D-Applied Physics,40(14),4368-4375. |
| MLA | 魏征,et al."Growth of liquid bridge in AFM".Journal of Physics D-Applied Physics 40.14(2007):4368-4375. |
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