image: Photoluminescence, excited by an ultraviolet lamp, of nanocrystals with novel tin sulfide capping ligands. This image accompanied the report, "Colloidal Nanocrystals with Molecular Metal Chalcogenide Surface Ligands," by M.V. Kovalenko appearing in the June 12, 2009 issue of Science. view more
Credit: Image © <i>Science</i>/AAAS