화학공학소재연구정보센터
Journal of Vacuum Science & Technology B, Vol.12, No.3, 1942-1946, 1994
Scanning-Tunneling-Microscopy of Ordered C-60 and C-70 Layers on Au(111), Cu(111), Ag(110), and Au(110) Surfaces
We have conducted a study of the growth of C60 and C70 on a variety of reconstructed and unreconstructed noble metal surfaces using a UHV scanning tunneling microscope. For reconstructed Au(110) and Au(111) surfaces we observe changes in the superstructure of the metal upon (sub)monolayer adsorption at the fullerene-metal interface. In all the metals studied, formation of a well-ordered hexagonal C60 overlayer is observed after annealing. (110) and (111) substrates show preferred nucleation and growth at terrace and steps, respectively. Time-lapsed images illustrate mobility of C60 arrays and clusters. The role of tip-C60 interactions is elucidated by sequences of images and the prospects for manipulation is discussed.