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Large effect of polydispersity on defect concentrations in colloidal crystals
FOM Inst. for Atom./Molec. Physics, Amsterdam, Netherlands.
2004 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 120, no 14, 6764-6768 p.Article in journal (Refereed) Published
Abstract [en]

We compute the equilibrium concentration of stacking faults and point defects in polydisperse hard-sphere crystals. We find that, while the concentration of stacking faults remains similar to that of monodisperse hard-sphere crystals, the concentration of vacancies decreases by about a factor of 2. Most strikingly, the concentration of interstitials in the maximally polydisperse crystal may be some six orders of magnitude larger than in a monodisperse crystal. We show that this dramatic increase in interstitial concentration is due to the increased probability of finding small particles and that the small-particle tail of the particle size distribution is crucial for the interstitial concentration in a colloidal crystal.

Place, publisher, year, edition, pages
2004. Vol. 120, no 14, 6764-6768 p.
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-79138DOI: 10.1063/1.1667880ISI: 000220456400050OAI: oai:DiVA.org:kth-79138DiVA: diva2:495162
Note
QC 20120305Available from: 2012-02-08 Created: 2012-02-08 Last updated: 2017-12-07Bibliographically approved

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