Nanogeometry matters: Unexpected Decrease of the Capillary Adhesion Forces with Increasing Relative Humidity

Supporting Information is available on the WWW under http://www.small-journal.com or from the author

Detalles Bibliográficos
Autores: Köber, Mariana, Sahagún, Enrique, García-Mochales, Pedro, Briones Fernández-Pola, Fernando, Luna, Mónica, Sáenz, J. J.
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/46760
Acceso en línea:http://hdl.handle.net/10261/46760
Access Level:acceso abierto
Palabra clave:Nanostructures
Interfaces
Wetting
Modeling
Atomic- force Microscopy
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spelling Nanogeometry matters: Unexpected Decrease of the Capillary Adhesion Forces with Increasing Relative HumidityKöber, MarianaSahagún, EnriqueGarcía-Mochales, PedroBriones Fernández-Pola, FernandoLuna, MónicaSáenz, J. J.NanostructuresInterfacesWettingModelingAtomic- force MicroscopySupporting Information is available on the WWW under http://www.small-journal.com or from the authorThe sticking effect between hydrophilic surfaces occurring at increasing relative humidity is a day life phenomenon with uncountable implications. Here we present experimental evidence for a counterintuitive monotonous decrease of the capillary adhesion forces between hydrophilic surfaces with increasing relative humidity for the whole humidity range. We show that this unexpected result is related to the actual shape of the asperity at the nanometer scale: a model based on macroscopic thermodynamics predicts this decrease in the adhesion force for a sharp object ended in an almost flat nanometer sized apex, in full agreement with experiments. This anomalous decrease is due to the fact that a significant growth of the liquid meniscus formed at the contact region with increasing humidity is hindered for this geometry. These results are relevant in the analysis of the dynamical behavior of nanomenisci. They could also have an outstanding value in technological applications since the undesirable sticking effect between surfaces occurring at increasing relative humidity could be avoided by controlling the shape of the surface asperities at the nanometric scale.This work has been supported by the Spanish MICINN through the projects FIS2009-13430-C02-02, CTQ2005-07993-C0202/BQU, NAN2004-09125-C07-02, PET2007_0315, TRA2009_0206 and by the “Comunidad de Madrid Microseres Program” S2009/TIC-1476. M.K. acknowledges financial support from the CSIC through an I3P scholarship.Peer reviewed201220122010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/46760reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1002/smll.201001297info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/467602026-05-22T06:33:51Z
dc.title.none.fl_str_mv Nanogeometry matters: Unexpected Decrease of the Capillary Adhesion Forces with Increasing Relative Humidity
title Nanogeometry matters: Unexpected Decrease of the Capillary Adhesion Forces with Increasing Relative Humidity
spellingShingle Nanogeometry matters: Unexpected Decrease of the Capillary Adhesion Forces with Increasing Relative Humidity
Köber, Mariana
Nanostructures
Interfaces
Wetting
Modeling
Atomic- force Microscopy
title_short Nanogeometry matters: Unexpected Decrease of the Capillary Adhesion Forces with Increasing Relative Humidity
title_full Nanogeometry matters: Unexpected Decrease of the Capillary Adhesion Forces with Increasing Relative Humidity
title_fullStr Nanogeometry matters: Unexpected Decrease of the Capillary Adhesion Forces with Increasing Relative Humidity
title_full_unstemmed Nanogeometry matters: Unexpected Decrease of the Capillary Adhesion Forces with Increasing Relative Humidity
title_sort Nanogeometry matters: Unexpected Decrease of the Capillary Adhesion Forces with Increasing Relative Humidity
dc.creator.none.fl_str_mv Köber, Mariana
Sahagún, Enrique
García-Mochales, Pedro
Briones Fernández-Pola, Fernando
Luna, Mónica
Sáenz, J. J.
author Köber, Mariana
author_facet Köber, Mariana
Sahagún, Enrique
García-Mochales, Pedro
Briones Fernández-Pola, Fernando
Luna, Mónica
Sáenz, J. J.
author_role author
author2 Sahagún, Enrique
García-Mochales, Pedro
Briones Fernández-Pola, Fernando
Luna, Mónica
Sáenz, J. J.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Nanostructures
Interfaces
Wetting
Modeling
Atomic- force Microscopy
topic Nanostructures
Interfaces
Wetting
Modeling
Atomic- force Microscopy
description Supporting Information is available on the WWW under http://www.small-journal.com or from the author
publishDate 2010
dc.date.none.fl_str_mv 2010
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/46760
url http://hdl.handle.net/10261/46760
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1002/smll.201001297
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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