화학공학소재연구정보센터
Applied Surface Science, Vol.252, No.15, 5563-5567, 2006
Growth of nanorods and mesoscale stars prior to an orientation transition in thin Bi films on graphite
We report on the growth of unusual star shaped Bi islands and ordered arrays of nanorods on highly ordered pyrolitic graphite (HOPG) substrates. The rods and stars grow with {0 1 2}(Bi)vertical bar vertical bar{0 0 1}(HOPG) and are preferentially aligned with the high symmetry directions of the substrate. As more Bi is deposited, the film undergoes a transition to the {0 0 1} orientation. These features are a result of a complex interplay between kinetics, thermodynamics, and the crystallography of the substrate and island material. (c) 2005 Elsevier B.V. All rights reserved.