Mechanically switchable wetting petal effect in self‐patterned nanocolumnar films on poly(Dimethylsiloxane)

Switchable mechanically induced changes in the wetting behavior of surfaces are of para-mount importance for advanced microfluidic, self‐cleaning and biomedical applications. In this work we show that the well‐known polydimethylsiloxane (PDMS) elastomer develops self‐patterning when it is coated wit...

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Autores: Parra Barranco, Julián, López Santos, Carmen, Sánchez Valencia, Juan Ramón, Borrás Martos, Ana Isabel, Rodríguez González-Elipe, Agustín, Barranco Quero, Ángel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/128830
Acceso en línea:https://hdl.handle.net/11441/128830
https://doi.org/10.3390/nano11102566
Access Level:acceso abierto
Palabra clave:Anisotropic wetting
Droplet sliding
GLAD coatings
PDMS
Self‐surface patterning
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spelling Mechanically switchable wetting petal effect in self‐patterned nanocolumnar films on poly(Dimethylsiloxane)Parra Barranco, JuliánLópez Santos, CarmenSánchez Valencia, Juan RamónBorrás Martos, Ana IsabelRodríguez González-Elipe, AgustínBarranco Quero, ÁngelAnisotropic wettingDroplet slidingGLAD coatingsPDMSSelf‐surface patterningSwitchable mechanically induced changes in the wetting behavior of surfaces are of para-mount importance for advanced microfluidic, self‐cleaning and biomedical applications. In this work we show that the well‐known polydimethylsiloxane (PDMS) elastomer develops self‐patterning when it is coated with nanostructured TiO2 films prepared by physical vapor deposition at glancing angles and subsequently subjected to a mechanical deformation. Thus, unlike the disordered wrinkled surfaces typically created by deformation of the bare elastomer, well‐ordered and aligned micro‐scaled grooves form on TiO2/PDMS after the first post‐deposition bending or stretching event. These regularly patterned surfaces can be reversibly modified by mechanical deformation, thereby inducing a switchable and reversible wetting petal effect and the sliding of liquid droplets. When performed in a dynamic way, this mechanical actuation produces a unique capacity of liquid droplets (water and diiodomethane) transport and tweezing, this latter through their selective capture and release depending on their volume and chemical characteristics. Scanning electron and atomic force microscopy studies of the strained samples showed that a dual‐scale rough-ness, a parallel alignment of patterned grooves and their reversible widening upon deformation, are critical factors controlling this singular sliding behavior and the possibility to tailor their response by the appropriate manufacturing of surface structures.European Union 899352Ministerio de Ciencia e Innovación PID2019- 110430GB-C21, PID2019-109603RA-I0, MAT2013-40852-R, MAT2013- 42900-PMinisterio de Economía y Competitividad 201560E055Junta de Andalucía AT17-6079, P18-RT-3480Multidisciplinary Digital Publishing Institute (MDPI)Física Atómica, Molecular y NuclearFísica Aplicada I2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/128830https://doi.org/10.3390/nano11102566reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésNanomaterials, 11 (10), 2566.899352PID2019- 110430GB-C21PID2019-109603RA-I0MAT2013-40852-RMAT2013- 42900-P201560E055AT17-6079P18-RT-3480https://doi.org/10.3390/nano11102566info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1288302026-06-17T12:51:07Z
dc.title.none.fl_str_mv Mechanically switchable wetting petal effect in self‐patterned nanocolumnar films on poly(Dimethylsiloxane)
title Mechanically switchable wetting petal effect in self‐patterned nanocolumnar films on poly(Dimethylsiloxane)
spellingShingle Mechanically switchable wetting petal effect in self‐patterned nanocolumnar films on poly(Dimethylsiloxane)
Parra Barranco, Julián
Anisotropic wetting
Droplet sliding
GLAD coatings
PDMS
Self‐surface patterning
title_short Mechanically switchable wetting petal effect in self‐patterned nanocolumnar films on poly(Dimethylsiloxane)
title_full Mechanically switchable wetting petal effect in self‐patterned nanocolumnar films on poly(Dimethylsiloxane)
title_fullStr Mechanically switchable wetting petal effect in self‐patterned nanocolumnar films on poly(Dimethylsiloxane)
title_full_unstemmed Mechanically switchable wetting petal effect in self‐patterned nanocolumnar films on poly(Dimethylsiloxane)
title_sort Mechanically switchable wetting petal effect in self‐patterned nanocolumnar films on poly(Dimethylsiloxane)
dc.creator.none.fl_str_mv Parra Barranco, Julián
López Santos, Carmen
Sánchez Valencia, Juan Ramón
Borrás Martos, Ana Isabel
Rodríguez González-Elipe, Agustín
Barranco Quero, Ángel
author Parra Barranco, Julián
author_facet Parra Barranco, Julián
López Santos, Carmen
Sánchez Valencia, Juan Ramón
Borrás Martos, Ana Isabel
Rodríguez González-Elipe, Agustín
Barranco Quero, Ángel
author_role author
author2 López Santos, Carmen
Sánchez Valencia, Juan Ramón
Borrás Martos, Ana Isabel
Rodríguez González-Elipe, Agustín
Barranco Quero, Ángel
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
Física Aplicada I
dc.subject.none.fl_str_mv Anisotropic wetting
Droplet sliding
GLAD coatings
PDMS
Self‐surface patterning
topic Anisotropic wetting
Droplet sliding
GLAD coatings
PDMS
Self‐surface patterning
description Switchable mechanically induced changes in the wetting behavior of surfaces are of para-mount importance for advanced microfluidic, self‐cleaning and biomedical applications. In this work we show that the well‐known polydimethylsiloxane (PDMS) elastomer develops self‐patterning when it is coated with nanostructured TiO2 films prepared by physical vapor deposition at glancing angles and subsequently subjected to a mechanical deformation. Thus, unlike the disordered wrinkled surfaces typically created by deformation of the bare elastomer, well‐ordered and aligned micro‐scaled grooves form on TiO2/PDMS after the first post‐deposition bending or stretching event. These regularly patterned surfaces can be reversibly modified by mechanical deformation, thereby inducing a switchable and reversible wetting petal effect and the sliding of liquid droplets. When performed in a dynamic way, this mechanical actuation produces a unique capacity of liquid droplets (water and diiodomethane) transport and tweezing, this latter through their selective capture and release depending on their volume and chemical characteristics. Scanning electron and atomic force microscopy studies of the strained samples showed that a dual‐scale rough-ness, a parallel alignment of patterned grooves and their reversible widening upon deformation, are critical factors controlling this singular sliding behavior and the possibility to tailor their response by the appropriate manufacturing of surface structures.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/128830
https://doi.org/10.3390/nano11102566
url https://hdl.handle.net/11441/128830
https://doi.org/10.3390/nano11102566
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Nanomaterials, 11 (10), 2566.
899352
PID2019- 110430GB-C21
PID2019-109603RA-I0
MAT2013-40852-R
MAT2013- 42900-P
201560E055
AT17-6079
P18-RT-3480
https://doi.org/10.3390/nano11102566
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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