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Article: Multifunctional nanofluids: Synthesis, aggregation and thermal conductivity

TitleMultifunctional nanofluids: Synthesis, aggregation and thermal conductivity
Authors
KeywordsAggregation
Fluorescence
Multifunctional Nanofluids
Non-Raidiative Energy Transfer
Thermal Conductivity
Issue Date2011
PublisherBentham Science Publishers Ltd. The Journal's web site is located at http://www.bentham.org/cnano/index.htm
Citation
Current Nanoscience, 2011, v. 7 n. 3, p. 480-488 How to Cite?
AbstractWe synthesize multifunctional nanofluids by incorporating fluorescent dyes into magnetite nanoparticles. The synthesis is car- ried out in two different routes, in which nanoparticles with two sizes are coated by two different kinds of stabilizers. The structures of coating layers of the as-synthesized nanoparticles are characterized by the analysis of Fourier transform infrared spectra. Magnetic- interaction-induced aggregation still exits and is traced by the DLS. Thermal conductivities of the synthesized nanofluids are measured under day-light, in the dark and under the UV irradiation. The fluid thermal conductivity varies in a wave-like shape as a function of par- ticle concentration due to the existence of aggregation. Furthermore, the measured thermal conductivity under UV light is higher than those with the other conditions. The collapse of aggregates under UV irradiation due to the unidirectional non-radiative energy transfer increases the number of single magnetite particles and is thus assumed to be responsible for the increase of fluid thermal conductivity. ©2011 Bentham Science Publishers Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/157117
ISSN
2015 Impact Factor: 0.934
2015 SCImago Journal Rankings: 0.283
References

 

DC FieldValueLanguage
dc.contributor.authorJiang, Wen_US
dc.contributor.authorWang, Len_US
dc.date.accessioned2012-08-08T08:45:24Z-
dc.date.available2012-08-08T08:45:24Z-
dc.date.issued2011en_US
dc.identifier.citationCurrent Nanoscience, 2011, v. 7 n. 3, p. 480-488en_US
dc.identifier.issn1573-4137en_US
dc.identifier.urihttp://hdl.handle.net/10722/157117-
dc.description.abstractWe synthesize multifunctional nanofluids by incorporating fluorescent dyes into magnetite nanoparticles. The synthesis is car- ried out in two different routes, in which nanoparticles with two sizes are coated by two different kinds of stabilizers. The structures of coating layers of the as-synthesized nanoparticles are characterized by the analysis of Fourier transform infrared spectra. Magnetic- interaction-induced aggregation still exits and is traced by the DLS. Thermal conductivities of the synthesized nanofluids are measured under day-light, in the dark and under the UV irradiation. The fluid thermal conductivity varies in a wave-like shape as a function of par- ticle concentration due to the existence of aggregation. Furthermore, the measured thermal conductivity under UV light is higher than those with the other conditions. The collapse of aggregates under UV irradiation due to the unidirectional non-radiative energy transfer increases the number of single magnetite particles and is thus assumed to be responsible for the increase of fluid thermal conductivity. ©2011 Bentham Science Publishers Ltd.en_US
dc.languageengen_US
dc.publisherBentham Science Publishers Ltd. The Journal's web site is located at http://www.bentham.org/cnano/index.htmen_US
dc.relation.ispartofCurrent Nanoscienceen_US
dc.subjectAggregationen_US
dc.subjectFluorescenceen_US
dc.subjectMultifunctional Nanofluidsen_US
dc.subjectNon-Raidiative Energy Transferen_US
dc.subjectThermal Conductivityen_US
dc.titleMultifunctional nanofluids: Synthesis, aggregation and thermal conductivityen_US
dc.typeArticleen_US
dc.identifier.emailWang, L:lqwang@hkucc.hku.hken_US
dc.identifier.authorityWang, L=rp00184en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.2174/157341311795542354en_US
dc.identifier.scopuseid_2-s2.0-79956287667en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79956287667&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume7en_US
dc.identifier.issue3en_US
dc.identifier.spage480en_US
dc.identifier.epage488en_US
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridJiang, W=36079060300en_US
dc.identifier.scopusauthoridWang, L=35235288500en_US
dc.identifier.citeulike9258167-

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