Preparation and characterization of the CdS/PSA core-shell “egg”

CdS/PSA (Poly(styrene–co-acrylic acid) (St/AA)) core-shell composites “egg” whose major and minor axis is about 400, 200 nm, respectively, have been prepared using PSA ellipsoids as template. Viscoelastic deformation of polyvinyl alcohol was used to convert monodispersed PSA microspheres into uniform ellipsoids with a tightly controlled major-to-minor axis ratio.