(color online) (a) Plots of perpendicular thermal conductivity κ_⊥ of T-FLGs versus the number of layers. (b) The comparison between the values of normalized heat flux J = J_N/J₀ for T-FLGs with θ = 0° (black dash-dotted line) and 30° (red dash-dotted line), where J_N is the heat flux of twisted N-layer structure and J₀ is the heat flux of three-layer graphene with θ = 0°.