Nuclear magnetic resonance-based study of ordered layering on the surface of alumina nanoparticles in water
Layering of water molecules on the surface of alumina nanoparticles in an alumina/water nanofluid is studied using nuclear magnetic resonance (NMR). The data suggest that a thin ordered layer ( ∼ 1.4 nm) of water molecules surrounds each nanoparticle. This ordered layer increases the nanoparticle ef...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en_US |
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American Institute of Physics
2011
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| Online Access: | http://hdl.handle.net/1721.1/66179 |
| _version_ | 1811079491844308992 |
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| author | Gerardi, Craig Cory, David G. Buongiorno, Jacopo Hu, Lin-Wen McKrell, Thomas J. |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Gerardi, Craig Cory, David G. Buongiorno, Jacopo Hu, Lin-Wen McKrell, Thomas J. |
| author_sort | Gerardi, Craig |
| collection | MIT |
| description | Layering of water molecules on the surface of alumina nanoparticles in an alumina/water nanofluid is studied using nuclear magnetic resonance (NMR). The data suggest that a thin ordered layer ( ∼ 1.4 nm) of water molecules surrounds each nanoparticle. This ordered layer increases the nanoparticle effective volumetric fraction; however, the nanofluid thermal conductivity appears to be unaffected by this layer, and in good agreement with Maxwell’s effective medium theory. Furthermore, the NMR data suggest that the nanoparticles do not enhance, but rather stifle micromixing in the base fluid. |
| first_indexed | 2024-09-23T11:15:53Z |
| format | Article |
| id | mit-1721.1/66179 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:15:53Z |
| publishDate | 2011 |
| publisher | American Institute of Physics |
| record_format | dspace |
| spelling | mit-1721.1/661792022-09-27T18:16:33Z Nuclear magnetic resonance-based study of ordered layering on the surface of alumina nanoparticles in water Gerardi, Craig Cory, David G. Buongiorno, Jacopo Hu, Lin-Wen McKrell, Thomas J. Massachusetts Institute of Technology. Department of Nuclear Science and Engineering MIT Nuclear Reactor Laboratory Buongiorno, Jacopo Gerardi, Craig Cory, David G. Buongiorno, Jacopo Hu, Lin-Wen McKrell, Thomas J. Layering of water molecules on the surface of alumina nanoparticles in an alumina/water nanofluid is studied using nuclear magnetic resonance (NMR). The data suggest that a thin ordered layer ( ∼ 1.4 nm) of water molecules surrounds each nanoparticle. This ordered layer increases the nanoparticle effective volumetric fraction; however, the nanofluid thermal conductivity appears to be unaffected by this layer, and in good agreement with Maxwell’s effective medium theory. Furthermore, the NMR data suggest that the nanoparticles do not enhance, but rather stifle micromixing in the base fluid. King Abdulaziz City of Science and Technology (KACST, Saudia Arabia) (Grant no. 014914–002) 2011-10-04T19:50:48Z 2011-10-04T19:50:48Z 2009-12 2009-08 Article http://purl.org/eprint/type/JournalArticle 1077-3118 0003-6951 http://hdl.handle.net/1721.1/66179 Gerardi, Craig et al. “Nuclear magnetic resonance-based study of ordered layering on the surface of alumina nanoparticles in water.” Applied Physics Letters 95 (2009): 253104. © 2009 American Institute of Physics en_US http://dx.doi.org/10.1063/1.3276551 Applied Physics Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Institute of Physics AIP |
| spellingShingle | Gerardi, Craig Cory, David G. Buongiorno, Jacopo Hu, Lin-Wen McKrell, Thomas J. Nuclear magnetic resonance-based study of ordered layering on the surface of alumina nanoparticles in water |
| title | Nuclear magnetic resonance-based study of ordered layering on the surface of alumina nanoparticles in water |
| title_full | Nuclear magnetic resonance-based study of ordered layering on the surface of alumina nanoparticles in water |
| title_fullStr | Nuclear magnetic resonance-based study of ordered layering on the surface of alumina nanoparticles in water |
| title_full_unstemmed | Nuclear magnetic resonance-based study of ordered layering on the surface of alumina nanoparticles in water |
| title_short | Nuclear magnetic resonance-based study of ordered layering on the surface of alumina nanoparticles in water |
| title_sort | nuclear magnetic resonance based study of ordered layering on the surface of alumina nanoparticles in water |
| url | http://hdl.handle.net/1721.1/66179 |
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