Our simulations fall within the previous measured range for G. The steady-state temperature profiles of gold and water for each case are shown in Figure and S2 (Supporting Information). The thermal interface conductance (G) was determined according to Equation 1. G ranged from ∼110-185 MW m -2 K -1 for the moderate wetting case and ∼ 20 -45 MW m -2 K -1 for the poor wetting case. The AuNP results under moderate wetting fall within the range of experimental results (∼ 100 -250 MW m -2 K -1 ) reported previously for various spherical nanoparticle-water interfaces (Figure ), while the poor wetting results fall within the range of values (G ∼ 5 -50 MW m -2 K -1 ) reported from experiments of spherical AuNPs in organic solvents. G values for CTAB coated gold nanorods in water have also been reported, with estimates ranging from ∼ 50 -450 MW m -2 K -1 . G of the planar surface in the moderate wetting case was ∼110 MW m -2 K -1 at all heating powers, which is close to the previously reported values of 105 ± 15 MW m -2 K -1 for 100 nm and 110 ± 10 MW m -2 K -1 for 18.5 ± 3.0 nm citrate-stabilized AuNPs in water. The planar surface had a G ∼ 25 -26 MW m -2 K -1 in the poor wetting case.