Subnanometer Interfacial Forces in Three-Dimensional Atomic Force Microscopy: Water and Octane near a Mica Surface
| Autor: | Ricardo Garcia, Simone Benaglia, Jose Hernández-Muñoz, Manuel R. Uhlig, Enrique Chacón, Pedro Tarazona |
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| Přispěvatelé: | Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Economía y Competitividad (España), European Commission, García, Ricardo, García García, Ricardo, García, Ricardo [0000-0002-7115-1928], García García, Ricardo [0000-0002-7115-1928] |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Interfaces Analytical chemistry 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound media_common.cataloged_instance Physical and Theoretical Chemistry European union Octane media_common Atomic force microscopy Liquids Molecules 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Condensed Matter::Soft Condensed Matter Oscillation General Energy chemistry Mica Layers 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1932-7447 |
| DOI: | 10.1021/acs.jpcc.0c08092 |
| Popis: | [EN] Three-dimensional force microscopy generates atomically resolved 3D images of solid-liquid interfaces. Here, we investigated the components of the interfacial force exerted by a tip on a mica-liquid interface by comparing density functional theory and experiments. The study involved two liquids: an aqueous solution of KCl (polar) and n-octane as a nonpolar solvent. The comparison between theory and experiments shows the presence of oscillatory and monotonically decaying terms. The periodicity of the oscillation arises from entropic effects associated with the molecular packing of the liquid, while its amplitude carries information on the solid surface (substrate and tip)-liquid interactions. The exponent of the monotonic term comes from cohesive interactions between the liquid molecules, while its amplitude reflects the interactions with the solid surfaces. This work was funded by the Ministerio de Ciencia e Innovación (Spain) under grants PID2019-106801GB-I00, MAT2016-76507-R, FIS2017-86007-C3, and FPU2015/0248 (P.T.) and through the “María de Maeztu” Programme for Units of Excellence in R&D (CEX2018-000805-M) and the European Union’s Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant agreement no.721874 (SPM2.0). |
| Databáze: | OpenAIRE |
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