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Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography
Structure, shape and composition are the basic parameters responsible for properties of nanoscale materials, distinguishing them from their bulk counterparts. To reveal these in three dimensions at the nanoscale, electron tomography is a powerful tool. Advancing electron tomography to atomic resolut...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4640115/ https://www.ncbi.nlm.nih.gov/pubmed/26508471 http://dx.doi.org/10.1038/ncomms9779 |
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author | Haberfehlner, Georg Thaler, Philipp Knez, Daniel Volk, Alexander Hofer, Ferdinand Ernst, Wolfgang E. Kothleitner, Gerald |
author_facet | Haberfehlner, Georg Thaler, Philipp Knez, Daniel Volk, Alexander Hofer, Ferdinand Ernst, Wolfgang E. Kothleitner, Gerald |
author_sort | Haberfehlner, Georg |
collection | PubMed |
description | Structure, shape and composition are the basic parameters responsible for properties of nanoscale materials, distinguishing them from their bulk counterparts. To reveal these in three dimensions at the nanoscale, electron tomography is a powerful tool. Advancing electron tomography to atomic resolution in an aberration-corrected transmission electron microscope remains challenging and has been demonstrated only a few times using strong constraints or extensive filtering. Here we demonstrate atomic resolution electron tomography on silver/gold core/shell nanoclusters grown in superfluid helium nanodroplets. We reveal morphology and composition of a cluster identifying gold- and silver-rich regions in three dimensions and we estimate atomic positions without using any prior information and with minimal filtering. The ability to get full three-dimensional information down to the atomic scale allows understanding the growth and deposition process of the nanoclusters and demonstrates an approach that may be generally applicable to all types of nanoscale materials. |
format | Online Article Text |
id | pubmed-4640115 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-46401152015-12-08 Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography Haberfehlner, Georg Thaler, Philipp Knez, Daniel Volk, Alexander Hofer, Ferdinand Ernst, Wolfgang E. Kothleitner, Gerald Nat Commun Article Structure, shape and composition are the basic parameters responsible for properties of nanoscale materials, distinguishing them from their bulk counterparts. To reveal these in three dimensions at the nanoscale, electron tomography is a powerful tool. Advancing electron tomography to atomic resolution in an aberration-corrected transmission electron microscope remains challenging and has been demonstrated only a few times using strong constraints or extensive filtering. Here we demonstrate atomic resolution electron tomography on silver/gold core/shell nanoclusters grown in superfluid helium nanodroplets. We reveal morphology and composition of a cluster identifying gold- and silver-rich regions in three dimensions and we estimate atomic positions without using any prior information and with minimal filtering. The ability to get full three-dimensional information down to the atomic scale allows understanding the growth and deposition process of the nanoclusters and demonstrates an approach that may be generally applicable to all types of nanoscale materials. Nature Pub. Group 2015-10-28 /pmc/articles/PMC4640115/ /pubmed/26508471 http://dx.doi.org/10.1038/ncomms9779 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Haberfehlner, Georg Thaler, Philipp Knez, Daniel Volk, Alexander Hofer, Ferdinand Ernst, Wolfgang E. Kothleitner, Gerald Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography |
title | Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography |
title_full | Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography |
title_fullStr | Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography |
title_full_unstemmed | Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography |
title_short | Formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography |
title_sort | formation of bimetallic clusters in superfluid helium nanodroplets analysed by atomic resolution electron tomography |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4640115/ https://www.ncbi.nlm.nih.gov/pubmed/26508471 http://dx.doi.org/10.1038/ncomms9779 |
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