http://www.cnr.it/ontology/cnr/individuo/prodotto/ID202398
Atomic Resolution Electron Microscopy Studies of nanostructured Hybrid Materials (Contributo in atti di convegno)
- Type
- Label
- Atomic Resolution Electron Microscopy Studies of nanostructured Hybrid Materials (Contributo in atti di convegno) (literal)
- Anno
- 2009-01-01T00:00:00+01:00 (literal)
- Alternative label
Carlino E (2009)
Atomic Resolution Electron Microscopy Studies of nanostructured Hybrid Materials
in IUPAC 5th International Symposium on Novel Materials and theyr synthesis-19th International Symposium on fine chemistry and functional polymers, Shanghai, China, 18-22 October 2009
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- IUPAC 5th International Symposium on Novel Materials and theyr synthesis-19th International Symposium on fine chemistry and functional polymers (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- TASC-INFM-CNR National Laboratory, Area Science Park Basovizza, Bld MM 34149 Trieste, Italy (literal)
- Titolo
- Atomic Resolution Electron Microscopy Studies of nanostructured Hybrid Materials (literal)
- Abstract
- The in-depth study of nanoscale matter represents a burning issue in modern materials science. Along with development of tools enabling programmable material fabrication with nanometer-level compositional and geometric precision, the unfolding of the local structure of nanomaterials with atomic resolution is increasingly emerging as a fundamental transition pathway towards control of their unique size-dependent properties and realization of their technological potential[ ].
Here will be shown how transmission electron microscopy TEM and scanning TEM (STEM) Z-contrast atomic resolution imaging can be applied to the study of nanostructured hybrid materials solving the structure and the properties of nanorods and branched particles at the interfaces between different nanoscopic domains[ ]. Furthermore it will be shown how new TEM methodologies can reveal subtle properties of the materials at a sub-Angstrom resolution. In particular, we demonstrate that phase-retrieved electron diffractive high resolution TEM (HRTEM) images of individual TiO2 nanocrystals can be achieved with a resolution of 70 pm while exposing the specimen to a low electron dose. For the first time, the detailed crystal structure of an oxide nanomaterial has been addressed by visualizing O atomic columns in a HRTEM experiment without the need for any lens aberration corrector. Additionally, our approach has revealed subtle deviations in the unit cell structure of nanocrystals from those of their bulk material counterpart, which could correlate with the size-dependent properties of materials on the nanoscale[ ]. (literal)
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