Document Detail

Measuring the size of individual particles from three-dimensional imaging experiments.
MedLine Citation:
PMID:  23047685     Owner:  NLM     Status:  In-Data-Review    
Often experimentalists study particulate samples that are nominally monodisperse. In reality, many samples have a polydispersity of 4-10%. At the level of an individual particle, the consequences of this polydispersity are unknown as it is difficult to measure an individual particle size from images of a dense sample. Here we propose a method to estimate individual particle radii from three-dimensional data of the particle positions. We first validate our method with simulations. We then apply our method to experimental data of colloidal suspensions observed with confocal microscopy. We demonstrate that we can recover the full particle size distribution in situ. Finally, we use our method to study the relationship between homogeneous colloidal crystal nucleation and particle sizes. We show that nucleation occurs in regions that are more monodisperse than average.
Rei Kurita; David B Ruffner; Eric R Weeks
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Nature communications     Volume:  3     ISSN:  2041-1723     ISO Abbreviation:  Nat Commun     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101528555     Medline TA:  Nat Commun     Country:  England    
Other Details:
Languages:  eng     Pagination:  1127     Citation Subset:  IM    
Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
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