Monodispersed ZnS Dimers, Trimers, and Tetramers for Lower Symmetry Photonic Crystal Lattices


  • This work has been supported in part by the Army Research Office MURI program (DAAD19-01-1-0603). C. M. Liddell thanks the Office of Naval Research for fellowship support. The authors also thank J. Li and Z. L. Wang, Georgia Tech Electron Microscopy Center, for TEM imaging and helpful discussion and Jonafel Crowe, Petit Institute of Bioengineering and Biosciences, for aid in flow cytometry experiments.


Monodispersed ZnS dimers, trimers, and tetramers (see Figure) have been prepared by the decomposition of thioacetamide in the presence of metal salts. The hierarchically structured aggregates expand the menu of complex colloid bases available as building blocks for photonic crystal structures. Such ordered assemblies of non-spherical colloids are predicted to promote large, stable photonic bandgaps.