Trapping colloids near chemical stripes via critical Casimir forces


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TRÖNDLE, Matthias, Olga ZVYAGOLSKAYA, Andrea GAMBASSI, Dominik VOGT, Ludger HARNAU, Clemens BECHINGER, Siegfried DIETRICH, 2011. Trapping colloids near chemical stripes via critical Casimir forces. In: Molecular Physics. 109(7-10), pp. 1169-1185. ISSN 0026-8976. eISSN 1362-3028

@article{Trondle2011Trapp-39388, title={Trapping colloids near chemical stripes via critical Casimir forces}, year={2011}, doi={10.1080/00268976.2011.553639}, number={7-10}, volume={109}, issn={0026-8976}, journal={Molecular Physics}, pages={1169--1185}, author={Tröndle, Matthias and Zvyagolskaya, Olga and Gambassi, Andrea and Vogt, Dominik and Harnau, Ludger and Bechinger, Clemens and Dietrich, Siegfried}, note={"A Special Issue in Honour of Robert Evans"} }

<rdf:RDF xmlns:rdf="" xmlns:bibo="" xmlns:dc="" xmlns:dcterms="" xmlns:xsd="" > <rdf:Description rdf:about=""> <dc:creator>Zvyagolskaya, Olga</dc:creator> <dc:creator>Harnau, Ludger</dc:creator> <dc:contributor>Dietrich, Siegfried</dc:contributor> <dc:contributor>Harnau, Ludger</dc:contributor> <bibo:uri rdf:resource=""/> <dcterms:issued>2011</dcterms:issued> <dc:creator>Gambassi, Andrea</dc:creator> <dc:language>eng</dc:language> <dcterms:abstract xml:lang="eng">We study theoretically and experimentally the solvent-mediated critical Casimir force acting on colloidal particles immersed in a binary liquid mixture of water and 2,6-lutidine and close to substrates which are chemically patterned with periodically alternating stripes of antagonistic adsorption preferences. These patterns are experimentally realized via microcontact printing. Upon approaching the critical demixing point of the solvent, normal and lateral critical Casimir forces generate laterally confining effective potentials for the colloids. We analyze in detail the rich behavior of the spherical colloids close to such substrates. For all patterned substrates we investigated, our measurements of these effective potentials agree with the corresponding theoretical predictions. Since both the directions and the strengths of the critical Casimir forces can be tuned by minute temperature changes, this provides a new mechanism for controlling colloids as model systems, opening encouraging perspectives for applications.</dcterms:abstract> <dc:contributor>Zvyagolskaya, Olga</dc:contributor> <dc:contributor>Tröndle, Matthias</dc:contributor> <dc:creator>Vogt, Dominik</dc:creator> <dcterms:title>Trapping colloids near chemical stripes via critical Casimir forces</dcterms:title> <dcterms:available rdf:datatype="">2017-06-26T09:00:30Z</dcterms:available> <dc:date rdf:datatype="">2017-06-26T09:00:30Z</dc:date> <dc:creator>Dietrich, Siegfried</dc:creator> <dc:creator>Bechinger, Clemens</dc:creator> <dc:contributor>Vogt, Dominik</dc:contributor> <dcterms:rights rdf:resource=""/> <dc:contributor>Gambassi, Andrea</dc:contributor> <dc:contributor>Bechinger, Clemens</dc:contributor> <dc:creator>Tröndle, Matthias</dc:creator> </rdf:Description> </rdf:RDF>

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