Ultralow thermal conductivity of nanoparticle packed bed

Publication Type

Journal Article

Authors

DOI

Abstract

We show that thermal conductivity of packed bed of alumina nanoparticles can be as low as 0.035W?mK which is only 35% higher than the thermal conductivity of air and is smaller than the recently reported lowest thermal conductivity of solids using disordered layered WeS2. These findings show a promising approach for making low-cost and ultralow thermal conductivity thermal insulation materials with high density and good sustainability at high pressures.

Journal

Appl. Phys. Lett.

Volume

91

Year of Publication

2007

Organization

Research Areas