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Title:Packing patterns of silica nanoparticles on surfaces of armored polystyrene latex particles
Authors:Fortuna, Sara (Author)
Colard, Catheline A. L. (Author)
Bon, Stefan A. F. (Author)
Troisi, Alessandro (Author)
Files:This document has no files. This document may have a phisical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:Fascinating packing patterns of identical spherical and discotic objects on curved surfaces occur readily in nature and science. Examples include C60 fullerenes,(1, 2)13-atom cuboctahedral metal clusters,(3) and S-layer proteins on outer cell membranes.(4) Numerous situations with surface-arranged objects of variable size also exist, such as the lenses on insect eyes, biomineralized shells on coccolithophorids,(5) and solid-stabilized emulsion droplets(6) and bubbles.(7) The influence of size variations on these packing patterns, however, is studied sparsely. Here we investigate the packing of nanosized silica particles on the surface of polystyrene latex particles fabricated by Pickering miniemulsion polymerization of submicrometer-sized armored monomer droplets. We are able to rationalize the experimental morphology and the nearest-neighbor distribution with the help of Monte Carlo simulations. We show that broadening of the nanoparticle size distribution has pronounced effects on the self-assembled equilibrium packing structures, with original 12-point dislocations or grain-boundary scars gradually fading out.
Keywords:packing patterns, silica, simulation, Monte Carlo, order, disorder, transition, armored particles, nanoparticles, Pickering emulsion
Year of publishing:2009
Number of pages:12399-12403
Numbering:21, 25
COBISS_ID:4529915 Link is opened in a new window
URN:URN:SI:UNG:REP:5RHZRDX2
DOI:10.1021/la9010289 Link is opened in a new window
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Record is a part of a journal

Title:Langmuir
Shortened title:Langmuir,
Publisher:American Chemical Society
ISSN:0743-7463
Year of publishing:2009

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