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Self-Assembly of Ordered Colloidal Nanoparticle Films in Few-Micron Wide Laser-Desorbed Lines of Octadecylsiloxane Monolayers on Silicon Oxide Surfaces
Technical University of Chemnitz, Germany.
Linköpings universitet, Institutionen för teknik och naturvetenskap, Fysik och elektroteknik. Linköpings universitet, Tekniska högskolan. Technical University of Chemnitz, Germany.
Technical University of Chemnitz, Germany.
Technical University of Chemnitz, Germany.
2014 (engelsk)Inngår i: Advanced Engineering Materials, ISSN 1438-1656, E-ISSN 1527-2648, Vol. 16, nr 9, s. 1090-1097Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We report about a maskless technique to deposit colloidal polystyrene particles in patterned stripes with a line width as narrow as 1.5m. Our approach is based on the digital patterning of a hydrophobic octadecylsiloxane self-assembled monolayer (SAM) on a silicon oxide surface by laser-assisted decomposition and desorption of its organic parts. For hydrophilic stripes of the micropatterned SAM area down to widths of approximately 1.5m, we observed ordered, mainly monolayered stripes of colloidal polystyrene nanoparticles using a modified vertical deposition technique, dipping the silicon substrate into a colloidal suspension at an angle of around 45 degrees with respect to the surface normal of the liquid. The mechanism of this so-called slope self-assembly [Wu et al., Langmuir2013, 29, 14017] and its limitations with respect to stacking can be explained in the framework of a meniscus moving along the steps of alternating surface energy with the decreasing width of the hydrophilic stripes during the deposition process [Fustin et al., Langmuir2004, 20, 9114].

sted, utgiver, år, opplag, sider
Wiley-VCH Verlag , 2014. Vol. 16, nr 9, s. 1090-1097
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Identifikatorer
URN: urn:nbn:se:liu:diva-111607DOI: 10.1002/adem.201400245ISI: 000342282000004OAI: oai:DiVA.org:liu-111607DiVA, id: diva2:758546
Merknad

Funding Agencies|European Commission [214006]; Deutsche Forschungsgemeinschaft (DFG) [GR 2695/8]; Linkoping University, Department of Science and Technology [ITN-2010-00018]

Tilgjengelig fra: 2014-10-27 Laget: 2014-10-27 Sist oppdatert: 2017-12-05

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