Difference between revisions of "Nanoparticle in a Nanofluid Film Spreading on a Surface"

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[[Image:wiki42.png|thumb|right|370px| Figure 2. (a) Film with dimple in the shape of a horseshoe and (b) filme with four particle layers. (c) With time, a film with three layers of particles.]]
 
[[Image:wiki42.png|thumb|right|370px| Figure 2. (a) Film with dimple in the shape of a horseshoe and (b) filme with four particle layers. (c) With time, a film with three layers of particles.]]
 
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==[[Results]]==
 
==[[Results]]==

Revision as of 15:53, 18 April 2012

Original entry by Hyerim Hwang, AP 226, Spring 2012. not finished

Reference

Alex Nikolov, Kirti Kondiparty, and Darsh Wasan, "Nanoparticle Self-Structuring in a Nanofluid Film Spreading on a Solid Surface", Langmuir 2010 26(11), 7665-7670

Keywords

Thin film stability, Nanofluids, Disjoining pressure

Introduction

Figure 1.Photomicrograph depicting nanofluid film formation.
This paper investigates the complex mechanism involved in the solid-nanofluid-oil interactions by directly observing the phenomenon of nanoparticle self-layering due to confinement of nanoparticles in a thin film. This research also shows that the effect of film size on stability of nanolfluid films on a solid substrate.
Figure 2. (a) Film with dimple in the shape of a horseshoe and (b) filme with four particle layers. (c) With time, a film with three layers of particles.
Figure 3. .
Figure 4. .
Figure 5. .
Figure 6. .
Figure 7. .

Results

Discussion

In this paper, the experimental results of the nanoparticle self-ordering and stepwise thinning of the nanofluid film fromed between an oil drop and a solid surface are reported. This also presents the measured contact angle of film-meniscus and thickness corresponding to the number of particle layers on a solid surface. These were used for getting the film energy due to the nanoparticle layering within the nanofluid film.