Description du projet
Des nanomatériaux issus de composés stratifiés inadaptés sont à l’étude
Les composés stratifiés inadaptés sont une classe relativement nouvelle de nanomatériaux qui consistent en des plaques moléculaires de compositions chimiques et de périodicités différentes qui sont empilées de manière alternée. Le projet PROMISES, financé par l’UE, intégrera des travaux expérimentaux et théoriques en vue de recueillir davantage d’informations sur la structure et les propriétés (opto)électroniques de ces nanomatériaux. Il combinera notamment la microscopie électronique à balayage de haute résolution, la spectroscopie photoélectronique par rayons X et l’imagerie par cathodoluminescence. Les méthodes de caractérisation avancées généreront des données précieuses qui serviront de base aux simulations ab initio de cette classe de nanomatériaux.
Objectif
The novel class of nanomaterials made from misfit-layered compounds offers intriguing properties. However, due to the complex, non-symmetric, structure of the misfit-layered compounds even down to the atomic scale, the analysis of these nanomaterials is a highly challenging task. Our PROMISES proposal will allow to reveal the structure and (opto)electronic properties of these nanomaterials (especially 1D nanomaterials) by combining an experimental and theoretical approach. The experimental analysis comprises advanced electron microscopy and spectroscopy at high spatial resolution as well as related experimental techniques, such as x-ray photoelectron spectroscopy and cathodoluminescence, all of which will be applied to analyse individual nanostructures. The obtained experimental results, particularly once the atomic structure has been revealed, will serve as a basis for the theoretical analysis that will be conducted via ab-initio simulations using the time-dependent variant of the density functional theory. We especially strive for studying these 1D nanomaterials under external stimuli such as elevated and liquid-nitrogen temperature and biasing to assess their properties under application-relevant conditions by employing in-situ electron microscopy. With this approach, we intend to fully reveal the structure and properties of the nanomaterials, which will be of great interest to a broad audience and potentially fuels their application. The work will be carried out by an experienced researcher with a strong background in methodological development of electron microscopy who will diversify and enhance his competences by means of an experimental analysis of the novel class of nanomaterials and by acquiring skills in computational physics. In addition, our PROMISES proposal will strengthen the collaboration between the hosting institutions and enable the main hosting institution to reinforce crucial competence in nanofabrication and ab-initio simulations.
Champ scientifique
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Programme(s)
Régime de financement
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)Coordinateur
50009 Zaragoza
Espagne