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Título: | Atomic-scale mapping of hydrophobic layers on graphene and few-layer MoS2 and WSe2 in water |
Autor: | Uhlig, Manuel R.; Martín-Jiménez, Daniel; García García, Ricardo CSIC ORCID | Palabras clave: | Characterization and analytical techniques Chemical physics Surfaces Interfaces and thin films Solid-liquid interfaces Hydrophobicity |
Fecha de publicación: | 13-jun-2019 | Editor: | Springer Nature | Citación: | Nature Communications 10: 2606 (2019) | Resumen: | [EN] The structure and the role of the interfacial water in mediating the interactions of extended hydrophobic surfaces are not well understood. Two-dimensional materials provide a variety of large and atomically flat hydrophobic surfaces to facilitate our understanding of hydrophobic interactions. The angstrom resolution capabilities of three-dimensional AFM are exploited to image the interfacial water organization on graphene, few-layer MoS2 and few-layer WSe2. Those interfaces are characterized by the existence of a 2 nm thick region above the solid surface where the liquid density oscillates. The distances between adjacent layers for graphene, few-layer MoS2 and WSe2 are ~0.50 nm. This value is larger than the one predicted and measured for water density oscillations (~0.30 nm). The experiments indicate that on extended hydrophobic surfaces water molecules are expelled from the vicinity of the surface and replaced by several molecular-size hydrophobic layers. | Descripción: | Journal peer review information: Nature Communications thanks Mingdong Dong and other anonymous reviewer(s) for their contribution to the peer review of this work. Peer reviewer reports are available. | Versión del editor: | http://dx.doi.org/10.1038/s41467-019-10740-w | URI: | http://hdl.handle.net/10261/185162 | DOI: | 10.1038/s41467-019-10740-w | E-ISSN: | 2041-1723 |
Aparece en las colecciones: | (ICMM) Artículos |
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Fichero | Descripción | Tamaño | Formato | |
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Uhlig (2019) Nature Comm.pdf | Versión Publicada | 2,78 MB | Adobe PDF | Visualizar/Abrir |
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