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题名: Size-Dependent Stiffness of Nanodroplets: A Quantitative Analysis of the Interaction between an AFM Probe and Nanodroplets
作者: Wang, S; Wang, XY; Zhao, BY; Wang, L; Qiu, J; Zhou, LM; Dong, YM; Li, B; Lu, JH; Wang, Y; Zhang, Y; Zhang, LJ; Hu, J
刊名: LANGMUIR
出版日期: 2016
卷号: 32, 期号:43, 页码:11230-11235
DOI: 10.1021/acs.langmuir.6b01664
通讯作者: Zhang, LJ ; Hu, J (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China. ; Zhang, LJ ; Hu, J (reprint author), Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China. ; Zhang, LJ (reprint author), Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China.
文章类型: 期刊论文
英文摘要: The interfacial properties of nanodroplets are very significant for the exploration of the basic law governing the fluid behavior at the nanoscale and also the applications in some important processes in novel materials fabrication by forming a special and local reaction environment. However, many basic factors such as the interfacial tension or stiffness of nanodroplets are still lacking, partially because of the difficulty of making quantitative measurements of the interfacial interactions at the nanometer scale. Here, we used a novel atomic force microscopy (AFM) mode, PeakForce mode, to control the interaction between an AFM probe and nanodroplets, by which we could obtain the morphology and stiffness of nanodroplets simultaneously. The change in the stiffness with the size of the nanodroplets was observed where the smaller nanodroplets usually had a larger stiffness. To explain this phenomenon, we then established a theoretical model based on the Young-Laplace equation in which the deformation and size-dependent stiffness could be described quantitatively and the experimental observations could be explained with our numerical calculations very well. The general methodology presented here could also be extended to analyze the relevant behavior of nanobubbles and other wetting phenomena at the nanoscale.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000386991700020
ISSN号: 0743-7463
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26625
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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