Capillary Nanostamping with Spongy Mesoporous Silica Stamps
| Autor: | Wolfgang Harneit, Klaus Müller-Buschbaum, René Wieczorek, Michael Philippi, Dirk Enke, Maximilian Münzner, Johannes Stangl, Mercedes Schmidt, Martin Steinhart |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Capillary action FOS: Physical sciences Nanoparticle Applied Physics (physics.app-ph) 02 engineering and technology 010402 general chemistry 01 natural sciences Biomaterials chemistry.chemical_compound Electrochemistry Dewetting Condensed Matter - Materials Science Materials Science (cond-mat.mtrl-sci) Physics - Applied Physics Mesoporous silica 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry Chemical engineering Microcontact printing Polystyrene Wetting 0210 nano-technology Mesoporous material |
| Zdroj: | Advanced Functional Materials |
| ISSN: | 1616-301X |
| DOI: | 10.1002/adfm.201800700 |
| Popis: | Classical microcontact printing involves transfer of molecules adsorbed on the outer surfaces of solid stamps to substrates to be patterned. We prepared spongy mesoporous silica stamps that can be soaked with ink and that were topographically patterned with arrays of submicron contact elements. Multiple successive stamping steps can be carried out under ambient conditions without ink refilling. Lattices of fullerene nanoparticles with diameters in the 100 nm range were obtained by stamping C60/toluene solutions on perfluorinated glass slides partially wetted by toluene. Stamping an ethanolic 1-dodecanethiol solution onto gold-coated glass slides yielded arrays of submicron dots of adsorbed 1-dodecantethiol molecules, even though macroscopic ethanol drops spread on gold. This outcome may be related to the pressure drop across the concave ink menisci at the mesopore openings on the stamp surface counteracting the van der Waals forces between ink and gold surface and/or to reduced wettability of the 1-dodecanethiol dots themselves by ethanol. The chemical surface heterogeneity of gold-coated glass slides functionalized with submicron 1-dodecanethiol dots was evidenced by dewetting of molten polystyrene films eventually yielding ordered arrays of polystyrene nanoparticles |
| Databáze: | OpenAIRE |
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