Molecular arrangement of smectic B liquid crystal, 1-(4'-cyanocyclohexyl)-trans-4(1-penten-5-yl)-cyclohexane, on a highly oriented pyrolytic graphite (HOPG) substrate was first observed by using a scanning tunneling microscope (STM). The end-on oriented molecules of hexagonal-like packing were observed. The observed structure is discussed in terms of the balance of molecule-molecule and molecule-substrate interactions.
