Overlapped scatter plot of
phosphorus atoms generated from the trajectories, indicating the positions
of the headgroups. Blue: DMPC headgroups. Red: DHPC headgroups. Yellow:
DDPC headgroups. The trailing part in the lower-right part of C depicts
the trajectory of a DHPC diffusing way from the ribbon edge (Arrow 1).
Arrow 2: formation of water channel in the ribbon bulk center.