Heterogeneous nucleation and crystal growth on curved surfaces observed by real-space imaging

Lade...
Vorschaubild
Dateien
Ziese_249114.pdf
Ziese_249114.pdfGröße: 1.16 MBDownloads: 458
Datum
2013
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Open Access Green
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Journal of Physics: Condensed Matter. 2013, 25(37), 375105. ISSN 0953-8984. eISSN 1361-648X. Available under: doi: 10.1088/0953-8984/25/37/375105
Zusammenfassung

We present a real-space imaging study of homogeneous and heterogeneous crystal nucleation and growth in colloidal suspensions of slightly charged and polydisperse particles. Heterogeneous crystallization is observed close to curved surfaces with radii of curvature, R, in the range from 4 to 40 particle diameters, d. Close to a curved surface, we find crystal nucleation and growth to be suppressed for R ≤ 10d. For R ≥ 15d, fast crystal growth is observed similar to that on a flat wall (R = ∞). We use the purely topological method of shortest path rings to determine the orientation of the crystal on the length scale of the nearest neighbor distance. Crystal nuclei forming close to a curved surface are oriented analogous to crystal growth on a flat wall with hexagonal planes parallel to the wall. While the smallest nuclei appear to be unaffected by the surface, larger nuclei are found to be suppressed for radii of curvature R ≤ 10d. The critical nucleus size in the vicinity of a curved surface is found to be about the same as for homogeneous nucleation.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
530 Physik
Schlagwörter
Soft matter, liquids and polymers, Condensed matter: structural, mechanical & thermal, Chemical physics and physical chemistry
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690ZIESE, Florian, Georg MARET, Urs GASSER, 2013. Heterogeneous nucleation and crystal growth on curved surfaces observed by real-space imaging. In: Journal of Physics: Condensed Matter. 2013, 25(37), 375105. ISSN 0953-8984. eISSN 1361-648X. Available under: doi: 10.1088/0953-8984/25/37/375105
BibTex
@article{Ziese2013-09-18Heter-24911,
  year={2013},
  doi={10.1088/0953-8984/25/37/375105},
  title={Heterogeneous nucleation and crystal growth on curved surfaces observed by real-space imaging},
  number={37},
  volume={25},
  issn={0953-8984},
  journal={Journal of Physics: Condensed Matter},
  author={Ziese, Florian and Maret, Georg and Gasser, Urs},
  note={Article Number: 375105}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/24911">
    <dcterms:issued>2013-09-18</dcterms:issued>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-10-28T10:26:13Z</dcterms:available>
    <dc:language>eng</dc:language>
    <dc:contributor>Gasser, Urs</dc:contributor>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/24911/2/Ziese_249114.pdf"/>
    <dcterms:bibliographicCitation>Journal of Physics : Condensed Matter ; 25 (2013), 37. - 375105</dcterms:bibliographicCitation>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-10-28T10:26:13Z</dc:date>
    <dcterms:abstract xml:lang="eng">We present a real-space imaging study of homogeneous and heterogeneous crystal nucleation and growth in colloidal suspensions of slightly charged and polydisperse particles. Heterogeneous crystallization is observed close to curved surfaces with radii of curvature, R, in the range from 4 to 40 particle diameters, d. Close to a curved surface, we find crystal nucleation and growth to be suppressed for R ≤ 10d. For R ≥ 15d, fast crystal growth is observed similar to that on a flat wall (R = ∞). We use the purely topological method of shortest path rings to determine the orientation of the crystal on the length scale of the nearest neighbor distance. Crystal nuclei forming close to a curved surface are oriented analogous to crystal growth on a flat wall with hexagonal planes parallel to the wall. While the smallest nuclei appear to be unaffected by the surface, larger nuclei are found to be suppressed for radii of curvature R ≤ 10d. The critical nucleus size in the vicinity of a curved surface is found to be about the same as for homogeneous nucleation.</dcterms:abstract>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/24911"/>
    <dc:creator>Ziese, Florian</dc:creator>
    <dcterms:title>Heterogeneous nucleation and crystal growth on curved surfaces observed by real-space imaging</dcterms:title>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/24911/2/Ziese_249114.pdf"/>
    <dc:contributor>Ziese, Florian</dc:contributor>
    <dc:contributor>Maret, Georg</dc:contributor>
    <dc:creator>Gasser, Urs</dc:creator>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:rights>terms-of-use</dc:rights>
    <dc:creator>Maret, Georg</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Diese Publikation teilen