Direct imaging of core-shell structure in silver-gold bimetallic nanoparticles

Research output: Contribution to journalArticle

Standard

Direct imaging of core-shell structure in silver-gold bimetallic nanoparticles. / Li, Zi; Yuan, J; Chen, Yu; Palmer, Richard; Wilcoxon, Jess.

In: Applied Physics Letters, Vol. 87, 01.01.2005, p. 243103.

Research output: Contribution to journalArticle

Harvard

APA

Vancouver

Author

Bibtex

@article{f67f78f8a2ba4f248340a4d84bf78648,
title = "Direct imaging of core-shell structure in silver-gold bimetallic nanoparticles",
abstract = "High-angle annular dark field imaging in the electron microscope has been exploited to reveal the internal structure of monodispersed, bimetallic gold (Au) - silver (Ag) nanoparticles of similar to 4 nm diameter, prepared using a seed-growth wet chemical method and passivated with an organic layer. Starting with a 3 nm Ag seed particle, deposition of Au atoms to a final overall atomic ratio of Ag:Au=1:2 leads to nanoparticles with an Ag-rich core and an Au-rich shell, as expected. If the overall atomic ratio is 2:1, the core/shell structure is not observed. The physical significance of these observations is discussed in terms of the stability of particles of nanoscale dimensions. (c) 2005 American Institute of Physics.",
author = "Zi Li and J Yuan and Yu Chen and Richard Palmer and Jess Wilcoxon",
year = "2005",
month = jan,
day = "1",
doi = "10.1063/1.2139851",
language = "English",
volume = "87",
pages = "243103",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",

}

RIS

TY - JOUR

T1 - Direct imaging of core-shell structure in silver-gold bimetallic nanoparticles

AU - Li, Zi

AU - Yuan, J

AU - Chen, Yu

AU - Palmer, Richard

AU - Wilcoxon, Jess

PY - 2005/1/1

Y1 - 2005/1/1

N2 - High-angle annular dark field imaging in the electron microscope has been exploited to reveal the internal structure of monodispersed, bimetallic gold (Au) - silver (Ag) nanoparticles of similar to 4 nm diameter, prepared using a seed-growth wet chemical method and passivated with an organic layer. Starting with a 3 nm Ag seed particle, deposition of Au atoms to a final overall atomic ratio of Ag:Au=1:2 leads to nanoparticles with an Ag-rich core and an Au-rich shell, as expected. If the overall atomic ratio is 2:1, the core/shell structure is not observed. The physical significance of these observations is discussed in terms of the stability of particles of nanoscale dimensions. (c) 2005 American Institute of Physics.

AB - High-angle annular dark field imaging in the electron microscope has been exploited to reveal the internal structure of monodispersed, bimetallic gold (Au) - silver (Ag) nanoparticles of similar to 4 nm diameter, prepared using a seed-growth wet chemical method and passivated with an organic layer. Starting with a 3 nm Ag seed particle, deposition of Au atoms to a final overall atomic ratio of Ag:Au=1:2 leads to nanoparticles with an Ag-rich core and an Au-rich shell, as expected. If the overall atomic ratio is 2:1, the core/shell structure is not observed. The physical significance of these observations is discussed in terms of the stability of particles of nanoscale dimensions. (c) 2005 American Institute of Physics.

UR - http://www.scopus.com/inward/record.url?scp=28844465357&partnerID=8YFLogxK

U2 - 10.1063/1.2139851

DO - 10.1063/1.2139851

M3 - Article

VL - 87

SP - 243103

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

ER -