Publikation:

Rotational diffusion in a bistable potential

Lade...
Vorschaubild

Dateien

Rotational_diffusion_in_a_bistable_potential.pdf
Rotational_diffusion_in_a_bistable_potential.pdfGröße: 165.39 KBDownloads: 449

Datum

2002

Autor:innen

Mertelj, Alenka
Arauz-Lara, José Luis
Stark, Holger

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
Core Facility der Universität Konstanz

Gesperrt bis

Titel in einer weiteren Sprache

Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published

Erschienen in

Europhysics Letters. 2002, 59(3), pp. 337-343. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/epl/i2002-00199-0

Zusammenfassung

Using depolarized quasielastic light scattering, we have investigated the rotational diffusion of optically anisotropic colloidal particles in a dilute suspension subject to external electric and magnetic fields (Eo,Bo). The particles were produced by the polymerization of nematic liquid crystal droplets, leading to birefringent colloidal spheres whose frozen orientational order is rigidly coupled to the particle orientation. The torque on the droplet director u(t) originating from the coupling of Eo and Bo to the particles anisotropy in the refractive index and in the diamagnetic susceptibility, respectively, leads to a suppression of the orientational fluctuations about the direction of the external field. We observe a strong dependence of the measured relaxation rates on the field strength and on the orientation of the field relative to the scattering plane. We explain our findings by a solution of the Smoluchowski equation describing rotational diffusion in a bistable potential V (u) which has two equivalent minima separated by a potential barrier whose height is proportional to (Eo,Bo)².

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
530 Physik

Schlagwörter

Konferenz

Rezension
undefined / . - undefined, undefined

Forschungsvorhaben

Organisationseinheiten

Zeitschriftenheft

Zugehörige Datensätze in KOPS

Zitieren

ISO 690MERTELJ, Alenka, José Luis ARAUZ-LARA, Georg MARET, Thomas GISLER, Holger STARK, 2002. Rotational diffusion in a bistable potential. In: Europhysics Letters. 2002, 59(3), pp. 337-343. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/epl/i2002-00199-0
BibTex
@article{Mertelj2002Rotat-4949,
  year={2002},
  doi={10.1209/epl/i2002-00199-0},
  title={Rotational diffusion in a bistable potential},
  number={3},
  volume={59},
  issn={0295-5075},
  journal={Europhysics Letters},
  pages={337--343},
  author={Mertelj, Alenka and Arauz-Lara, José Luis and Maret, Georg and Gisler, Thomas and Stark, Holger}
}
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/123456789/4949">
    <dc:contributor>Maret, Georg</dc:contributor>
    <dc:language>eng</dc:language>
    <dcterms:abstract xml:lang="eng">Using depolarized quasielastic light scattering, we have investigated the rotational diffusion of optically anisotropic colloidal particles in a dilute suspension subject to external electric and magnetic fields (Eo,Bo). The particles were produced by the polymerization of nematic liquid crystal droplets, leading to birefringent colloidal spheres whose frozen orientational order is rigidly coupled to the particle orientation. The torque on the droplet director u(t) originating from the coupling of Eo and Bo to the particles  anisotropy in the refractive index and in the diamagnetic susceptibility, respectively, leads to a suppression of the orientational fluctuations about the direction of the external field. We observe a strong dependence of the measured relaxation rates on the field strength and on the orientation of the field relative to the scattering plane. We explain our findings by a solution of the Smoluchowski equation describing rotational diffusion in a bistable potential V (u) which has two equivalent minima separated by a potential barrier whose height is proportional to (Eo,Bo)².</dcterms:abstract>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T14:51:36Z</dc:date>
    <dc:creator>Gisler, Thomas</dc:creator>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/4949"/>
    <dc:format>application/pdf</dc:format>
    <dc:creator>Stark, Holger</dc:creator>
    <dc:contributor>Arauz-Lara, José Luis</dc:contributor>
    <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by-nc-nd/2.0/"/>
    <dcterms:title>Rotational diffusion in a bistable potential</dcterms:title>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/4949/1/Rotational_diffusion_in_a_bistable_potential.pdf"/>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/4949/1/Rotational_diffusion_in_a_bistable_potential.pdf"/>
    <dc:contributor>Stark, Holger</dc:contributor>
    <dc:creator>Mertelj, Alenka</dc:creator>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T14:51:36Z</dcterms:available>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dcterms:issued>2002</dcterms:issued>
    <dc:creator>Arauz-Lara, José Luis</dc:creator>
    <dc:creator>Maret, Georg</dc:creator>
    <dcterms:bibliographicCitation>First publ. in: Europhysics Letters 59 (2002), 3, pp. 337-343</dcterms:bibliographicCitation>
    <dc:rights>Attribution-NonCommercial-NoDerivs 2.0 Generic</dc:rights>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:contributor>Gisler, Thomas</dc:contributor>
    <dc:contributor>Mertelj, Alenka</dc:contributor>
  </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
Nein
Begutachtet
Diese Publikation teilen