Measurements of periodically perturbed dewetting force fields and their consequences on the symmetry of the resulting patterns

Abstract We studied the origin of breaking the symmetry for moving circular contact lines of dewetting polymer films suspended on a periodic array of pillars. There, dewetting force fields driving polymer flow were perturbed by elastic micro-pillars arranged in a regular square pattern. Elastic rest...

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Autores principales:	Konstantinos Roumpos, Sarah Fontaine, Thomas Pfohl, Oswald Prucker, Jürgen Rühe, Günter Reiter
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/94f7065b17244db0a823c293e958257d
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spelling	oai:doaj.org-article:94f7065b17244db0a823c293e958257d2021-12-02T17:44:55ZMeasurements of periodically perturbed dewetting force fields and their consequences on the symmetry of the resulting patterns10.1038/s41598-021-92544-x2045-2322https://doaj.org/article/94f7065b17244db0a823c293e958257d2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92544-xhttps://doaj.org/toc/2045-2322Abstract We studied the origin of breaking the symmetry for moving circular contact lines of dewetting polymer films suspended on a periodic array of pillars. There, dewetting force fields driving polymer flow were perturbed by elastic micro-pillars arranged in a regular square pattern. Elastic restoring forces of deformed pillars locally balance driving capillary forces and broke the circular symmetry of expanding dewetting holes. The observed envelope of the dewetting holes reflected the symmetry of the underlying pattern, even at sizes much larger than the characteristic period of the pillar array, demonstrating that periodic perturbations in a driving force field can establish a well-defined pattern of lower symmetry. For the presented system, we succeeded in squaring the circle.Konstantinos RoumposSarah FontaineThomas PfohlOswald PruckerJürgen RüheGünter ReiterNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Konstantinos Roumpos Sarah Fontaine Thomas Pfohl Oswald Prucker Jürgen Rühe Günter Reiter Measurements of periodically perturbed dewetting force fields and their consequences on the symmetry of the resulting patterns
description	Abstract We studied the origin of breaking the symmetry for moving circular contact lines of dewetting polymer films suspended on a periodic array of pillars. There, dewetting force fields driving polymer flow were perturbed by elastic micro-pillars arranged in a regular square pattern. Elastic restoring forces of deformed pillars locally balance driving capillary forces and broke the circular symmetry of expanding dewetting holes. The observed envelope of the dewetting holes reflected the symmetry of the underlying pattern, even at sizes much larger than the characteristic period of the pillar array, demonstrating that periodic perturbations in a driving force field can establish a well-defined pattern of lower symmetry. For the presented system, we succeeded in squaring the circle.
format	article
author	Konstantinos Roumpos Sarah Fontaine Thomas Pfohl Oswald Prucker Jürgen Rühe Günter Reiter
author_facet	Konstantinos Roumpos Sarah Fontaine Thomas Pfohl Oswald Prucker Jürgen Rühe Günter Reiter
author_sort	Konstantinos Roumpos
title	Measurements of periodically perturbed dewetting force fields and their consequences on the symmetry of the resulting patterns
title_short	Measurements of periodically perturbed dewetting force fields and their consequences on the symmetry of the resulting patterns
title_full	Measurements of periodically perturbed dewetting force fields and their consequences on the symmetry of the resulting patterns
title_fullStr	Measurements of periodically perturbed dewetting force fields and their consequences on the symmetry of the resulting patterns
title_full_unstemmed	Measurements of periodically perturbed dewetting force fields and their consequences on the symmetry of the resulting patterns
title_sort	measurements of periodically perturbed dewetting force fields and their consequences on the symmetry of the resulting patterns
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/94f7065b17244db0a823c293e958257d
work_keys_str_mv	AT konstantinosroumpos measurementsofperiodicallyperturbeddewettingforcefieldsandtheirconsequencesonthesymmetryoftheresultingpatterns AT sarahfontaine measurementsofperiodicallyperturbeddewettingforcefieldsandtheirconsequencesonthesymmetryoftheresultingpatterns AT thomaspfohl measurementsofperiodicallyperturbeddewettingforcefieldsandtheirconsequencesonthesymmetryoftheresultingpatterns AT oswaldprucker measurementsofperiodicallyperturbeddewettingforcefieldsandtheirconsequencesonthesymmetryoftheresultingpatterns AT jurgenruhe measurementsofperiodicallyperturbeddewettingforcefieldsandtheirconsequencesonthesymmetryoftheresultingpatterns AT gunterreiter measurementsofperiodicallyperturbeddewettingforcefieldsandtheirconsequencesonthesymmetryoftheresultingpatterns
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Measurements of periodically perturbed dewetting force fields and their consequences on the symmetry of the resulting patterns

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