We report on the ultra-low thermal conductivity of a series of convectively assembled, anisotropic titania (TiO2) nanoparticle films. The TiO2 films are fabricated on aluminum coated glass substrates by flow coating a suspension of ellipsoidal colloidal nanoparticles, resulting in structured films with tailored order. Time domain thermoreflectance is used to measure the thermal conductivity of the TiO2 films. The thermal conductivities of these nanoparticle films are dependent on nanoparticle orientational order and films with more randomly oriented particles exhibit thermal conductivities less than the amorphous limit.
- Heat Transfer Division
Tunable Thermal Conductivity of TiO2 Films of Close-Packed Nanoparticles
- Views Icon Views
- Share Icon Share
- Search Site
Hopkins, PE, Mittal, M, Phinney, LM, Grillet, AM, & Furst, EM. "Tunable Thermal Conductivity of TiO2 Films of Close-Packed Nanoparticles." Proceedings of the ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASME/JSME 2011 8th Thermal Engineering Joint Conference. Honolulu, Hawaii, USA. March 13–17, 2011. T30047. ASME. https://doi.org/10.1115/AJTEC2011-44136
Download citation file: