Fig. 4From: Effect of Morphology and Crystal Structure on the Thermal Conductivity of Titania Nanotubesa Measured effective thermal conductivity of the titania nanotubes (symbols) versus porosity. The solid lines represent fitting using the effective thermal conductivity model (Eq. 6) with a shape factor of 1.24. b Thermal conductivity over the range of 60–80% porosity for clarityBack to article page