Figure 1
From: Flow of long chain hydrocarbons through carbon nanotubes (CNTs)

Effect of confinement on the fluid inside the CNT, (a) ratio of the density of fluid under over density of the fluid in bulk, calculated using MD simulation at 1 atm, (b) ratio of self-diffusion coefficient in bulk over confinement obtained from MD simulation. Created using OVITO (ver:3.3.0).