Ab Initio Structure Determination of Cu2- xTe Plasmonic Nanocrystals by Precession-Assisted Electron Diffraction Tomography and HAADF-STEM Imaging
Mugnaioli, Enrico (Istituto Italiano di Tecnologia)
Gemmi, Mauro ![Identificador ORCID](/img/uab/orcid.ico)
(Istituto Italiano di Tecnologia)
Tu, Renyong (Tsinghua University. Department of Chemistry)
David, Jérémy ![Identificador ORCID](/img/uab/orcid.ico)
(Institut Català de Nanociència i Nanotecnologia)
Bertoni, Giovanni ![Identificador ORCID](/img/uab/orcid.ico)
(Institute of Materials for Electronics and Magnetism)
Gaspari, Roberto (Istituto Italiano di Tecnologia)
De Trizio, Luca
(Istituto Italiano di Tecnologia)
Manna, Liberato
(Istituto Italiano di Tecnologia)
Data: |
2018 |
Resum: |
We investigated pseudo-cubic CuTe nanosheets using electron diffraction tomography and high-resolution HAADF-STEM imaging. The structure of this metastable nanomaterial, which has a strong localized surface plasmon resonance in the near-infrared region, was determined ab initio by 3D electron diffraction data recorded in low-dose nanobeam precession mode, using a new generation background-free single-electron detector. The presence of two different, crystallographically defined modulations creates a 3D connected vacancy channel system, which may account for the strong plasmonic response of this material. Moreover, a pervasive rotational twinning is observed for nanosheets as thin as 40 nm, resulting in a tetragonal pseudo-symmetry. |
Ajuts: |
European Commission 614897
|
Drets: |
Tots els drets reservats. ![](/img/licenses/InC.ico) |
Llengua: |
Anglès |
Document: |
Article ; recerca ; Versió sotmesa a revisió |
Matèria: |
Electron diffraction ;
Scanning transmission electron microscopy ;
Crystal structure ;
Physical and chemical processes ;
Defects in solids |
Publicat a: |
Inorganic chemistry, Vol. 57, Issue 16 (August 2018) , p. 10241-10248, ISSN 1520-510X |
DOI: 10.1021/acs.inorgchem.8b01445
El registre apareix a les col·leccions:
Documents de recerca >
Documents dels grups de recerca de la UAB >
Centres i grups de recerca (producció científica) >
Ciències >
Institut Català de Nanociència i Nanotecnologia (ICN2)Articles >
Articles de recercaArticles >
Articles publicats
Registre creat el 2020-06-03, darrera modificació el 2024-04-05