Research on composite materials is facing, among others, the challenging task of incorporating nanocrystals, and their superstructures, in polymer matrices. Electron microscopy can typically image nanometre-scale structures embedded in thin polymer films, but not in films that are micron size thick. Here, X-ray Ptychography was used to visualize, with a resolution of a few tens of nanometers, how CdSe/CdS octapod-shaped nanocrystals self-assemble in polystyrene films of 24 ± 4 ?m, providing a unique means for non-destructive investigation of nanoparticles distribution and organization in thick polymer films.
Ptychographic imaging of branched colloidal nanocrystals embedded in free-standing thick polystyrene films
De Caro Liberato;Altamura Davide;Siliqi Dritan;Sibillano Teresa;Giannini Cinzia
2016
Abstract
Research on composite materials is facing, among others, the challenging task of incorporating nanocrystals, and their superstructures, in polymer matrices. Electron microscopy can typically image nanometre-scale structures embedded in thin polymer films, but not in films that are micron size thick. Here, X-ray Ptychography was used to visualize, with a resolution of a few tens of nanometers, how CdSe/CdS octapod-shaped nanocrystals self-assemble in polystyrene films of 24 ± 4 ?m, providing a unique means for non-destructive investigation of nanoparticles distribution and organization in thick polymer films.File in questo prodotto:
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