In tribology studies, the interaction between solid and liquid surfaces is a common focus, with particular attention given to wear rates and surface scars. These wear and scar issues are analyzed through adsorption mechanisms. A key factor in these problems is the orientation of the liquid on solid surfaces, which requires an in-depth examination of molecular orientations. This study aims to investigate the adsorption mechanisms of liquids on solid surfaces by analyzing structural quantities such as density and orientation order parameters. The research employs molecular dynamics simulations to model a gold solid with face-centered cubic (FCC) (100) surfaces in contact with three different alkanes (pentane, heptane, and 3-ethylpentane). The simulations are conducted at a uniform temperature set at 0.7 of the liquid's critical temperature. Results indicate that liquids with linear molecular structures exhibit higher adsorption behavior compared to those with branched structures, which affects heat transfer near the contact interfaces. Further research is needed to explore how the surface structure of the solid affects these interactions.