title: Preface to Symposium E: Nanoscaled Si, Ge based Materials.
authors.affiliation: Laboratory of Advanced Optical Spectroscopy, Institute of Physics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland. artur.p.podhorodecki@pwr.wroc.pl.
authors.forename: Fabrice
authors.initials: F
authors.lastname: Gourbilleau
authors.forename: Artur
authors.initials: A
authors.lastname: Podhorodecki