Atomic resolution imaging of Au nanocluster dispersed in TiO 2, SrTiO 3, and MgO

C. M. Wang, V. Shutthanandan, Y. Zhang, S. Thevuthasan, G. Duscher

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Gold nanoclusters dispersed in single crystal TiO2, MgO, and SrTiO3 have been prepared by ion implantation at 300-975 K and subsequent annealing at 1275 K for 10 h. High-resolution transmission electron microscopy and high-angle annular dark field (HAADF) imaging in aberration corrected scanning transmission electron microscope (STEM) have been used to characterize the microstructure of the gold nanoclusters dispersed materials. STEM-HAADF imaging with atomic resolution has directly revealed for all three materials that Au atoms partially occupy cation lattice positions. Cavities up to several tens of nanometers were observed in MgO and SrTiO3. The cavities and gold clusters are spatially associated in MgO and SrTiO3, indicating a strong interaction between the Au cluster and cavities. For MgO and SrTiO3, the faceting planes appear to be the same for both nanometer-sized cavity and the Au cluster, demonstrating that both the surface energy and the interfacial energy between Au cluster and the matrix are lowest on these planes.

Original languageEnglish
Pages (from-to)3184-3191
Number of pages8
JournalJournal of the American Ceramic Society
Volume88
Issue number11
DOIs
Publication statusPublished - Nov 2005
Externally publishedYes

Fingerprint

Nanoclusters
cavity
Gold
Imaging techniques
Interfacial energy
gold
Electron microscopes
Scanning
High resolution transmission electron microscopy
Aberrations
Ion implantation
electron
annealing
surface energy
Positive ions
Single crystals
Annealing
Cations
transmission electron microscopy
Atoms

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Atomic resolution imaging of Au nanocluster dispersed in TiO 2, SrTiO 3, and MgO. / Wang, C. M.; Shutthanandan, V.; Zhang, Y.; Thevuthasan, S.; Duscher, G.

In: Journal of the American Ceramic Society, Vol. 88, No. 11, 11.2005, p. 3184-3191.

Research output: Contribution to journalArticle

Wang, C. M. ; Shutthanandan, V. ; Zhang, Y. ; Thevuthasan, S. ; Duscher, G. / Atomic resolution imaging of Au nanocluster dispersed in TiO 2, SrTiO 3, and MgO. In: Journal of the American Ceramic Society. 2005 ; Vol. 88, No. 11. pp. 3184-3191.
@article{3c89afef0b7c4dd2bc281bbcfece062b,
title = "Atomic resolution imaging of Au nanocluster dispersed in TiO 2, SrTiO 3, and MgO",
abstract = "Gold nanoclusters dispersed in single crystal TiO2, MgO, and SrTiO3 have been prepared by ion implantation at 300-975 K and subsequent annealing at 1275 K for 10 h. High-resolution transmission electron microscopy and high-angle annular dark field (HAADF) imaging in aberration corrected scanning transmission electron microscope (STEM) have been used to characterize the microstructure of the gold nanoclusters dispersed materials. STEM-HAADF imaging with atomic resolution has directly revealed for all three materials that Au atoms partially occupy cation lattice positions. Cavities up to several tens of nanometers were observed in MgO and SrTiO3. The cavities and gold clusters are spatially associated in MgO and SrTiO3, indicating a strong interaction between the Au cluster and cavities. For MgO and SrTiO3, the faceting planes appear to be the same for both nanometer-sized cavity and the Au cluster, demonstrating that both the surface energy and the interfacial energy between Au cluster and the matrix are lowest on these planes.",
author = "Wang, {C. M.} and V. Shutthanandan and Y. Zhang and S. Thevuthasan and G. Duscher",
year = "2005",
month = "11",
doi = "10.1111/j.1551-2916.2005.00579.x",
language = "English",
volume = "88",
pages = "3184--3191",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
publisher = "Wiley-Blackwell",
number = "11",

}

TY - JOUR

T1 - Atomic resolution imaging of Au nanocluster dispersed in TiO 2, SrTiO 3, and MgO

AU - Wang, C. M.

AU - Shutthanandan, V.

AU - Zhang, Y.

AU - Thevuthasan, S.

AU - Duscher, G.

PY - 2005/11

Y1 - 2005/11

N2 - Gold nanoclusters dispersed in single crystal TiO2, MgO, and SrTiO3 have been prepared by ion implantation at 300-975 K and subsequent annealing at 1275 K for 10 h. High-resolution transmission electron microscopy and high-angle annular dark field (HAADF) imaging in aberration corrected scanning transmission electron microscope (STEM) have been used to characterize the microstructure of the gold nanoclusters dispersed materials. STEM-HAADF imaging with atomic resolution has directly revealed for all three materials that Au atoms partially occupy cation lattice positions. Cavities up to several tens of nanometers were observed in MgO and SrTiO3. The cavities and gold clusters are spatially associated in MgO and SrTiO3, indicating a strong interaction between the Au cluster and cavities. For MgO and SrTiO3, the faceting planes appear to be the same for both nanometer-sized cavity and the Au cluster, demonstrating that both the surface energy and the interfacial energy between Au cluster and the matrix are lowest on these planes.

AB - Gold nanoclusters dispersed in single crystal TiO2, MgO, and SrTiO3 have been prepared by ion implantation at 300-975 K and subsequent annealing at 1275 K for 10 h. High-resolution transmission electron microscopy and high-angle annular dark field (HAADF) imaging in aberration corrected scanning transmission electron microscope (STEM) have been used to characterize the microstructure of the gold nanoclusters dispersed materials. STEM-HAADF imaging with atomic resolution has directly revealed for all three materials that Au atoms partially occupy cation lattice positions. Cavities up to several tens of nanometers were observed in MgO and SrTiO3. The cavities and gold clusters are spatially associated in MgO and SrTiO3, indicating a strong interaction between the Au cluster and cavities. For MgO and SrTiO3, the faceting planes appear to be the same for both nanometer-sized cavity and the Au cluster, demonstrating that both the surface energy and the interfacial energy between Au cluster and the matrix are lowest on these planes.

UR - http://www.scopus.com/inward/record.url?scp=33745309011&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33745309011&partnerID=8YFLogxK

U2 - 10.1111/j.1551-2916.2005.00579.x

DO - 10.1111/j.1551-2916.2005.00579.x

M3 - Article

VL - 88

SP - 3184

EP - 3191

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 11

ER -