Hyperuniform Monocrystalline Structures by Spinodal Solid-State Dewetting.
- Salvalaglio M Institute of Scientific Computing, TU Dresden, 01062 Dresden, Germany.
- Bouabdellaoui M Aix Marseille Univ, Université de Toulon, CNRS, IM2NP 13397, Marseille, France.
- Bollani M Istituto di Fotonica e Nanotecnologie-Consiglio Nazionale delle Ricerche, Laboratory for Nanostructure Epitaxy and Spintronics on Silicon, Via Anzani 42, 22100 Como, Italy.
- Benali A Aix Marseille Univ, Université de Toulon, CNRS, IM2NP 13397, Marseille, France.
- Favre L Aix Marseille Univ, Université de Toulon, CNRS, IM2NP 13397, Marseille, France.
- Claude JB Aix Marseille Université, CNRS, Centrale Marseille, Institut Fresnel, 13013 Marseille, France.
- Wenger J Aix Marseille Université, CNRS, Centrale Marseille, Institut Fresnel, 13013 Marseille, France.
- de Anna P Institut des Sciences de la Terre, University of Lausanne, Lausanne 1015, Switzerland.
- Intonti F LENS, University of Florence, Sesto Fiorentino 50019, Italy.
- Voigt A Institute of Scientific Computing, TU Dresden, 01062 Dresden, Germany.
- Abbarchi M Aix Marseille Univ, Université de Toulon, CNRS, IM2NP 13397, Marseille, France.
- 2020-10-05
Published in:
- Physical review letters. - 2020
English
Materials featuring anomalous suppression of density fluctuations over large length scales are emerging systems known as disordered hyperuniform. The underlying hidden order renders them appealing for several applications, such as light management and topologically protected electronic states. These applications require scalable fabrication, which is hard to achieve with available top-down approaches. Theoretically, it is known that spinodal decomposition can lead to disordered hyperuniform architectures. Spontaneous formation of stable patterns could thus be a viable path for the bottom-up fabrication of these materials. Here, we show that monocrystalline semiconductor-based structures, in particular Si_{1-x}Ge_{x} layers deposited on silicon-on-insulator substrates, can undergo spinodal solid-state dewetting featuring correlated disorder with an effective hyperuniform character. Nano- to micrometric sized structures targeting specific morphologies and hyperuniform character can be obtained, proving the generality of the approach and paving the way for technological applications of disordered hyperuniform metamaterials. Phase-field simulations explain the underlying nonlinear dynamics and the physical origin of the emerging patterns.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.125.126101
- PMID 33016725
- Persistent URL
- https://sonar.ch/global/documents/55468
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