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Personen: Schmidt, K. (Autor) 
Schoberth, H. G. (Autor) 
Schubert, F. (Autor) 
Hänsel, H. (Autor) 
Fischer, F. (Autor) 
Weiss, T. M. (Autor) 
Sevink, G. J. A. (Autor) 
Zvelindovsky, A. V. (Autor) 
Böker, A. (Autor) 
Krausch, Georg (Autor) 
Titel: Scaling behavior of the reorientation kinetics of block copolymers exposed to electric fields
Quelle: Soft matter. Bd. 3. H. 4. Cambridge : Royal Soc. of Chemistry. S. 448 - 453
Erscheinungsjahr:    2007
ISBN / ISSN: 1744-683X
URL der Originalveröffentlichung doi:10.1039/b614143a
Zeitschriftenaufsatz Zeitschriftenaufsatz
Sprache: Englisch
Open Access:
Person der Universität:    Krausch, Georg  In UnivIS suchen 
Einrichtung: Universitätsleitung
DDC-Sachgruppe:    Physik
ID: 11469  Universitätsbibliothek Mainz
Informationen zu den Nutzungsrechten unserer Inhalte Informationen zu den Nutzungsrechten unserer Inhalte
Abstract: We have followed the reorientation kinetics of various block copolymer solutions exposed to an external electric DC field. The characteristic time constants follow a power law indicating that the reorientation is driven by a decrease in electrostatic energy. Moreover, the observed exponent suggests an activated process in line with the expectations for a nucleation and growth process. When properly scaled, the data collapse onto a single master curve spanning several orders of magnitude both in reduced time and in reduced energy. The power law dependence of the rate of reorientation derived from computer simulations based on dynamic density functional theory agrees well with the experimental observations. First experiments in AC electric fields at sufficiently high frequencies confirm the notion that the reorientation process is dominated by differences in the dielectric constants rather than by mobile ions.
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