TITLE

Ultra-low thermal conductivity of ellipsoidal TiO2 nanoparticle films

AUTHOR(S)
Hopkins, Patrick E.; Mittal, Manish; Phinney, Leslie M.; Grillet, Anne M.; Furst, Eric M.
PUB. DATE
September 2011
SOURCE
Applied Physics Letters;9/26/2011, Vol. 99 Issue 13, p133106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on the thermal conductivity of a series of convectively assembled, anisotropic titania (TiO2) nanoparticle films. The TiO2 films are fabricated by flow coating a suspension of ellipsoidal colloidal nanoparticles, resulting in structured films with tailored orientational order. The thermal conductivities depend on nanoparticle orientation and can be less than amorphous TiO2 films due to inter-nanoparticle boundary scattering. This nanoparticle ordering presents a unique method for manipulating the thermal conductivity of nanocomposites.
ACCESSION #
66185046

 

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