Ptychographic Imaging of Branched Colloidal Nanocrystals Embedded in Free-Standing Thick Polystyrene Films

被引：10
作者：
De Caro, Liberato [1 ]
Altamura, Davide [1 ]
Arciniegas, Milena [2 ]
Siliqi, Dritan [1 ]
Kim, Mee R. [2 ]
Sibillano, Teresa [1 ]
Manna, Liberato [2 ]
Giannini, Cinzia [1 ]
机构：
[1] CNR, Ist Cristallog, I-70126 Bari, Italy
[2] IIT, IT-16163 Genoa, Italy
来源：
SCIENTIFIC REPORTS | 2016年 / 6卷
关键词：
PHASE RETRIEVAL ALGORITHMS; CATION-EXCHANGE; RAY; MICROSCOPY; RESOLUTION; FLUORESCENCE; POLYMERS; NANORODS; CELLS;
D O I：
10.1038/srep19397
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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 mu m, providing a unique means for non-destructive investigation of nanoparticles distribution and organization in thick polymer films.
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页数：8
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