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Gold and silver nanoparticles embedded in dielectric-capping layers studied by HAADF-STEM

Published online by Cambridge University Press:  23 April 2008

D. Babonneau ,
D. Lantiat ,
S. Camelio ,
J. Toudert ,
L. Simonot ,
F. Pailloux ,
M.-F. Denanot  and
T. Girardeau
D. Babonneau*
Affiliation:
Laboratoire PHYMAT, UMR 6630 CNRS, Université de Poitiers, SP2MI, Téléport 2, Bd M. et P. Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
D. Lantiat
Affiliation:
Laboratoire PHYMAT, UMR 6630 CNRS, Université de Poitiers, SP2MI, Téléport 2, Bd M. et P. Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
S. Camelio
Affiliation:
Laboratoire PHYMAT, UMR 6630 CNRS, Université de Poitiers, SP2MI, Téléport 2, Bd M. et P. Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
J. Toudert
Affiliation:
Laboratoire PHYMAT, UMR 6630 CNRS, Université de Poitiers, SP2MI, Téléport 2, Bd M. et P. Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
L. Simonot
Affiliation:
Laboratoire PHYMAT, UMR 6630 CNRS, Université de Poitiers, SP2MI, Téléport 2, Bd M. et P. Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
F. Pailloux
Affiliation:
Laboratoire PHYMAT, UMR 6630 CNRS, Université de Poitiers, SP2MI, Téléport 2, Bd M. et P. Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
M.-F. Denanot
Affiliation:
Laboratoire PHYMAT, UMR 6630 CNRS, Université de Poitiers, SP2MI, Téléport 2, Bd M. et P. Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
T. Girardeau
Affiliation:
Laboratoire PHYMAT, UMR 6630 CNRS, Université de Poitiers, SP2MI, Téléport 2, Bd M. et P. Curie, BP 30179, 86962 Futuroscope Chasseneuil Cedex, France
*
[email protected]
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Abstract

The morphology and optical response of Au and Agnanoparticles capped with dielectric amorphous Si3N4,BN, and Al2O3 layers are studied. Quantitative analysisof high-angle annular dark-field images obtained in a scanningtransmission electron microscope and simulations of opticaltransmittance spectra are used to investigate the dependence ofthe morphology of the nanoparticles on the particle size and onthe capping material. It is demonstrated that capping-layereffects induce a size-dependent and cap-dependent reshaping of thenanoparticles.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 44 , Issue 1: 10th Meeting of the French Microscopy Society (SFMU) , October 2008 , pp. 3 - 9
Copyright
© EDP Sciences, 2008

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