For the moderate wetting case, G of the spherical AuNPs exhibited a non-linear dependence on the heat flux (Figure ), increasing by about 20-40% from the lowest to the highest heating intensities for the spherical AuNPs. Since the applied heating power affects the temperature of both the gold structure and surrounding water (Figure , : y (MW m -2 K -1 ) corresponds to G(d), x (nm -1 ) corresponds to 2/d, the slope (×1000 -1 MW m -1 K -1 ) corresponds to δ, and the y-intercept (MW m -2 K -1 ) is G 0 .