Abstract
We have found that the Brownian motion of nanoparticles at the molecular and nanoscale level is a key mechanism governing the thermal behavior of nanoparticle–fluid suspensions (“nanofluids”). We have devised a theoretical model that accounts for the fundamental role of dynamic nanoparticles in nanofluids. The model not only captures the concentration and temperature-dependent conductivity, but also predicts strongly size-dependent conductivity. Furthermore, we have discovered a fundamental difference between solid/solid composites and solid/liquid suspensions in size-dependent conductivity. This understanding could lead to design of nanoengineered next-generation coolants with industrial and biomedical applications in high-heat-flux cooling.
Keywords
IconCitationNanofluidDownloadComputer scienceInformation retrievalBrownian motionPhysicsWorld Wide WebThermalThermodynamics
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Publication Info
- Year
- 2004
- Type
- article
- Volume
- 84
- Issue
- 21
- Pages
- 4316-4318
- Citations
- 1561
- Access
- Closed
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Cite This
Seok Pil Jang,
Stephen U. S. Choi
(2004).
Role of Brownian motion in the enhanced thermal conductivity of nanofluids.
Applied Physics Letters
, 84
(21)
, 4316-4318.
https://doi.org/10.1063/1.1756684
Identifiers
- DOI
- 10.1063/1.1756684