Structural and Optical Studies of CdS Nanocrystals Embedded in Silicon Dioxide Films A.G. Rolo, O. Conde, M.J.M. Gomes, M.P. dos Santos Conferência “E MRS/ICAM 1997 Meeting - The European Materials Research Society Conference-Symposium B: Epitaxial Thin film Growth and Nanostructures”, 16-20 de Junho de 1997, Estrasburgo, França.