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      Number density distribution of solvent molecules on a substrate: a transform theory for atomic force microscopy

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          Abstract

          A theory that transforms the force curve into a hydration structure is derived, and the transformation is demonstrated.

          Abstract

          Atomic force microscopy (AFM) in liquids can measure a force curve between a probe and a buried substrate. The shape of the measured force curve is related to hydration structure on the substrate. However, until now, there has been no practical theory that can transform the force curve into the hydration structure, because treatment of the liquid confined between the probe and the substrate is a difficult problem. Here, we propose a robust and practical transform theory, which can generate the number density distribution of solvent molecules on a substrate from the force curve. As an example, we analyzed a force curve measured by using our high-resolution AFM with a newly fabricated ultrashort cantilever. It is demonstrated that the hydration structure on muscovite mica (001) surface can be reproduced from the force curve by using the transform theory. The transform theory will enhance AFM's ability and support structural analyses of solid/liquid interfaces. By using the transform theory, the effective diameter of a real probe apex is also obtained. This result will be important for designing a model probe of molecular scale simulations.

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          Interaction between particles suspended in solutions of macromolecules

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            The surface chemistry of amorphous silica. Zhuravlev model

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              Accurate formulas for interaction force and energy in frequency modulation force spectroscopy

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                Author and article information

                Journal
                PPCPFQ
                Physical Chemistry Chemical Physics
                Phys. Chem. Chem. Phys.
                Royal Society of Chemistry (RSC)
                1463-9076
                1463-9084
                2016
                2016
                : 18
                : 23
                : 15534-15544
                Affiliations
                [1 ]Department of Energy and Hydrocarbon Chemistry
                [2 ]Graduate School of Engineering
                [3 ]Kyoto University
                [4 ]Kyoto 615-8510
                [5 ]Japan
                [6 ]Environment and Resource System Engineering
                [7 ]Kyoto 615-8540
                [8 ]Division of Electrical Engineering and Computer Science
                [9 ]Kanazawa University
                [10 ]Kanazawa 920-1192
                [11 ]Department of Materials Science and Engineering
                [12 ]Kyoto 606-8501
                [13 ]Department of Chemistry
                [14 ]School of Science
                [15 ]Kobe University
                [16 ]Kobe
                Article
                10.1039/C6CP00769D
                2f658a00-2034-4aa3-a7c4-41c8aa2ec4b1
                © 2016
                History

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