%0 Journal Article %A C.J Sandroff %A J.P Harbison %A Ramamoorthy Ramesh %A M.J Andrejco %A M.S Hegde %A D.M Hwang %A C.C Chang %A E.M Vogel %B Science %D 1989 %G eng %P 391-393 %R 10.1126/science.245.4916.391 %T GaAs clusters in the quantum size regime: Growth on high surface area silica by molecular beam epitaxy %V 245