Handle URI:
http://hdl.handle.net/10754/597976
Title:
Diffusive dynamics of nanoparticles in aqueous dispersions
Authors:
He, Kai; Spannuth, Melissa; Conrad, Jacinta C.; Krishnamoorti, Ramanan
Abstract:
The diffusive dynamics of 100 nm to 400 nm diameter polystyrene nanoparticles dispersed in water were studied using brightfield and fluorescence based differential dynamic microscopy (DDM) and compared to those obtained from dynamic light scattering. The relaxation times measured with brightfield and fluorescence DDM over a broad range of concentration of nanoparticles (10 -6 ≤ φ ≤ 10-3) and scattering vectors (0.5 μm-1 < q < 10 μm-1) are in excellent agreement with each other and extrapolate quantitatively to those obtained from DLS measurements. The diffusion coefficients extracted from the q-dependent relaxation times using all three methods are independent of the nanoparticle concentration. © 2012 The Royal Society of Chemistry.
Citation:
He K, Spannuth M, Conrad JC, Krishnamoorti R (2012) Diffusive dynamics of nanoparticles in aqueous dispersions. Soft Matter 8: 11933. Available: http://dx.doi.org/10.1039/c2sm26392k.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Soft Matter
KAUST Grant Number:
KUS-C1-018-02
Issue Date:
2012
DOI:
10.1039/c2sm26392k
Type:
Article
ISSN:
1744-683X; 1744-6848
Sponsors:
We thank Prof. J. Rimer for the use of the DLS instrumentation. This publication is based on the work supported in part by award no. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorHe, Kaien
dc.contributor.authorSpannuth, Melissaen
dc.contributor.authorConrad, Jacinta C.en
dc.contributor.authorKrishnamoorti, Ramananen
dc.date.accessioned2016-02-25T13:10:12Zen
dc.date.available2016-02-25T13:10:12Zen
dc.date.issued2012en
dc.identifier.citationHe K, Spannuth M, Conrad JC, Krishnamoorti R (2012) Diffusive dynamics of nanoparticles in aqueous dispersions. Soft Matter 8: 11933. Available: http://dx.doi.org/10.1039/c2sm26392k.en
dc.identifier.issn1744-683Xen
dc.identifier.issn1744-6848en
dc.identifier.doi10.1039/c2sm26392ken
dc.identifier.urihttp://hdl.handle.net/10754/597976en
dc.description.abstractThe diffusive dynamics of 100 nm to 400 nm diameter polystyrene nanoparticles dispersed in water were studied using brightfield and fluorescence based differential dynamic microscopy (DDM) and compared to those obtained from dynamic light scattering. The relaxation times measured with brightfield and fluorescence DDM over a broad range of concentration of nanoparticles (10 -6 ≤ φ ≤ 10-3) and scattering vectors (0.5 μm-1 < q < 10 μm-1) are in excellent agreement with each other and extrapolate quantitatively to those obtained from DLS measurements. The diffusion coefficients extracted from the q-dependent relaxation times using all three methods are independent of the nanoparticle concentration. © 2012 The Royal Society of Chemistry.en
dc.description.sponsorshipWe thank Prof. J. Rimer for the use of the DLS instrumentation. This publication is based on the work supported in part by award no. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST).en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleDiffusive dynamics of nanoparticles in aqueous dispersionsen
dc.typeArticleen
dc.identifier.journalSoft Matteren
dc.contributor.institutionUniversity of Houston, Houston, United Statesen
kaust.grant.numberKUS-C1-018-02en
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