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Type Kuchibhatla, Satyanarayana V. N. T.; Shutthanandan, V; Prosa, T. J.; Adusumilli, P.; Arey, B.; Buxbaum, A.; Wang, Y. C.; Tessner, T.; Ulfig, R.; Wang, C. M.; Thevuthasan, S.
  Publication Three-dimensional chemical imaging of embedded nanoparticles using atom probe tomography Volume Journal Article
Pages 2012
  Abstract Nanotechnology  
  Corporate Author  
Publisher 23  
Editor 21
  Summary Language 215704 Series Editor  
Abbreviated Series Title Analysis of nanoparticles is often challenging especially when they are embedded in a matrix. Hence, we have used laser-assisted atom probe tomography (APT) to analyze the Au nanoclusters synthesized in situ using ion-beam implantation in a single crystal MgO matrix. APT analysis along with scanning transmission electron microscopy and energy dispersive spectroscopy (STEM-EDX) indicated that the nanoparticles have an average size ~ 8-12 nm. While it is difficult to analyze the composition of individual nanoparticles using STEM, APT analysis can give three-dimensional compositions of the same. It was shown that the maximum Au concentration in the nanoparticles increases with increasing particle size, with a maximum Au concentration of up to 50%.
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0957-4484 no NU @ karnesky @ 11355
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