TY - JOUR
T1 - A stable multiply twinned decahedral gold nanoparticle with a barrel-like shape
AU - Santiago, Ulises
AU - Velázquez-Salazar, J. Jesus
AU - Sanchez, John Eder
AU - Ruiz-Zepeda, Francisco
AU - Ortega, José Eduardo
AU - Reyes-Gasga, José
AU - Bazán-Díaz, Lourdes
AU - Betancourt, Israel
AU - Rauch, Edgar F.
AU - Veron, Muriel
AU - Ponce, Arturo
AU - José-Yacamán, Miguel
N1 - Funding Information:
The authors would like to acknowledge the NSF PREM DMR #0934218 , the Department of Defense #64756-RT-REP and CONACYT #250836 . I. Betancourt acknowledges the financial support from PASPA-DGAPA, UNAM and CONACYT, Mexico, during his sabbatical leave. E.F. Rauch acknowledges Ákos K. Kiss from the University of Pannonia — Hungary for suggesting the correlation contour principle prior to the developments shown in the paper. The microscopy work was supported by the National Institute on Minority Health and Health Disparities (NIMHD) in the program Research Centers in Minority Institutions Program (RCMI) Nanotechnology and Human Health Core (G12MD007591).
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - In the present work we report a modified configuration of a multiply twinned decahedral barrel-like nanoparticle. The nanoparticle is stabilized by a selective chemical etching, which yielded a truncated shape with multiple high-index planes on the surface. The surface planes and the shape of the nanoparticle have been characterized using electron microscopy techniques, including scanning and transmission electron microscopies and electron diffraction. Coherent electron diffraction revealed streaked Bragg reflections which are in agreement with the high-index facets measured from electron microscope projected images. Crystal orientation mapping assisted by precession electron diffraction was performed under nanobeam conditions giving information about the structure from different orientations. The combination of these techniques allowed us to resolve the 3D structure of the modified nanoparticle and dismiss any possible ambiguities from the interpretation of the projected images in direct space.
AB - In the present work we report a modified configuration of a multiply twinned decahedral barrel-like nanoparticle. The nanoparticle is stabilized by a selective chemical etching, which yielded a truncated shape with multiple high-index planes on the surface. The surface planes and the shape of the nanoparticle have been characterized using electron microscopy techniques, including scanning and transmission electron microscopies and electron diffraction. Coherent electron diffraction revealed streaked Bragg reflections which are in agreement with the high-index facets measured from electron microscope projected images. Crystal orientation mapping assisted by precession electron diffraction was performed under nanobeam conditions giving information about the structure from different orientations. The combination of these techniques allowed us to resolve the 3D structure of the modified nanoparticle and dismiss any possible ambiguities from the interpretation of the projected images in direct space.
KW - Coherent electron diffraction
KW - Crystal orientation maps
KW - Decahedral barrel-like nanoparticle
KW - Precession electron diffraction
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U2 - 10.1016/j.susc.2015.09.015
DO - 10.1016/j.susc.2015.09.015
M3 - Article
AN - SCOPUS:84944097559
SN - 0039-6028
VL - 644
SP - 80
EP - 85
JO - Surface Science
JF - Surface Science
ER -