Transport and Dispersion of Nanoparticles in Periodic Nanopost Arrays

Handle URI:
http://hdl.handle.net/10754/600074
Title:
Transport and Dispersion of Nanoparticles in Periodic Nanopost Arrays
Authors:
He, Kai; Retterer, Scott T.; Srijanto, Bernadeta R.; Conrad, Jacinta C.; Krishnamoorti, Ramanan
Abstract:
Nanoparticles transported through highly confined porous media exhibit faster breakthrough than small molecule tracers. Despite important technological applications in advanced materials, human health, energy, and environment, the microscale mechanisms leading to early breakthrough have not been identified. Here, we measure dispersion of nanoparticles at the single-particle scale in regular arrays of nanoposts and show that for highly confined flows of dilute suspensions of nanoparticles the longitudinal and transverse velocities exhibit distinct scaling behaviors. The distributions of transverse particle velocities become narrower and more non-Gaussian when the particles are strongly confined. As a result, the transverse dispersion of highly confined nanoparticles at low Péclet numbers is significantly less important than longitudinal dispersion, leading to early breakthrough. This finding suggests a fundamental mechanism by which to control dispersion and thereby improve efficacy of nanoparticles applied for advanced polymer nanocomposites, drug delivery, hydrocarbon production, and environmental remediation. © 2014 American Chemical Society.
Citation:
He K, Retterer ST, Srijanto BR, Conrad JC, Krishnamoorti R (2014) Transport and Dispersion of Nanoparticles in Periodic Nanopost Arrays. ACS Nano 8: 4221–4227. Available: http://dx.doi.org/10.1021/nn404497z.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Nano
KAUST Grant Number:
KUS-C1-018-02
Issue Date:
27-May-2014
DOI:
10.1021/nn404497z
PubMed ID:
24738873
Type:
Article
ISSN:
1936-0851; 1936-086X
Sponsors:
This publication is based on work supported in part by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). R.K. and K.H. acknowledge the partial support of the Gulf of Mexico Research Initiative (Consortium for Ocean Leadership Grant SA 12-05/GoMRI-002). J.C.C. is supported by the American Chemical Society Petroleum Research Fund (52537-DNI7) and the National Science Foundation (DMR-1151133). A portion of this research was conducted at the Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorHe, Kaien
dc.contributor.authorRetterer, Scott T.en
dc.contributor.authorSrijanto, Bernadeta R.en
dc.contributor.authorConrad, Jacinta C.en
dc.contributor.authorKrishnamoorti, Ramananen
dc.date.accessioned2016-02-28T06:35:31Zen
dc.date.available2016-02-28T06:35:31Zen
dc.date.issued2014-05-27en
dc.identifier.citationHe K, Retterer ST, Srijanto BR, Conrad JC, Krishnamoorti R (2014) Transport and Dispersion of Nanoparticles in Periodic Nanopost Arrays. ACS Nano 8: 4221–4227. Available: http://dx.doi.org/10.1021/nn404497z.en
dc.identifier.issn1936-0851en
dc.identifier.issn1936-086Xen
dc.identifier.pmid24738873en
dc.identifier.doi10.1021/nn404497zen
dc.identifier.urihttp://hdl.handle.net/10754/600074en
dc.description.abstractNanoparticles transported through highly confined porous media exhibit faster breakthrough than small molecule tracers. Despite important technological applications in advanced materials, human health, energy, and environment, the microscale mechanisms leading to early breakthrough have not been identified. Here, we measure dispersion of nanoparticles at the single-particle scale in regular arrays of nanoposts and show that for highly confined flows of dilute suspensions of nanoparticles the longitudinal and transverse velocities exhibit distinct scaling behaviors. The distributions of transverse particle velocities become narrower and more non-Gaussian when the particles are strongly confined. As a result, the transverse dispersion of highly confined nanoparticles at low Péclet numbers is significantly less important than longitudinal dispersion, leading to early breakthrough. This finding suggests a fundamental mechanism by which to control dispersion and thereby improve efficacy of nanoparticles applied for advanced polymer nanocomposites, drug delivery, hydrocarbon production, and environmental remediation. © 2014 American Chemical Society.en
dc.description.sponsorshipThis publication is based on work supported in part by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). R.K. and K.H. acknowledge the partial support of the Gulf of Mexico Research Initiative (Consortium for Ocean Leadership Grant SA 12-05/GoMRI-002). J.C.C. is supported by the American Chemical Society Petroleum Research Fund (52537-DNI7) and the National Science Foundation (DMR-1151133). A portion of this research was conducted at the Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy.en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectdispersionen
dc.subjectnanoparticlesen
dc.subjectstructured mediaen
dc.subjecttransporten
dc.titleTransport and Dispersion of Nanoparticles in Periodic Nanopost Arraysen
dc.typeArticleen
dc.identifier.journalACS Nanoen
dc.contributor.institutionUniversity of Houston, Houston, United Statesen
dc.contributor.institutionOak Ridge National Laboratory, Oak Ridge, United Statesen
dc.contributor.institutionUniversity of Tennessee, Knoxville, Knoxville, United Statesen
kaust.grant.numberKUS-C1-018-02en

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