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Nano Research

Article Title

Vasarely painting at the nanoscale on sapphire crystals

Authors

Caroline Matringe, IRCER, UMR CNRS 7315, Centre Européen de la Céramique, Université de Limoges, 12 rue Atlantis, 87068 Limoges, France
Elsa Thune, IRCER, UMR CNRS 7315, Centre Européen de la Céramique, Université de Limoges, 12 rue Atlantis, 87068 Limoges, France
Rémy Cavalotti, IRCER, UMR CNRS 7315, Centre Européen de la Céramique, Université de Limoges, 12 rue Atlantis, 87068 Limoges, France
Ahmad Fakih, IRCER, UMR CNRS 7315, Centre Européen de la Céramique, Université de Limoges, 12 rue Atlantis, 87068 Limoges, France
Stephan Arnaud, Institut Néel UPR CNRS 2940, CRG D2AM Beamline, ESRF, Université Grenoble Alpes, 38042 Grenoble, France
Nils Blanc, Institut Néel UPR CNRS 2940, CRG D2AM Beamline, ESRF, Université Grenoble Alpes, 38042 Grenoble, France
Nathalie Boudet, Institut Néel UPR CNRS 2940, CRG D2AM Beamline, ESRF, Université Grenoble Alpes, 38042 Grenoble, France
Alessandro Coati, SixS Beamline, Synchrotron SOLEIL, BP48, 91192 Gif sur Yvette, France
Yves Garreau, SixS Beamline, Synchrotron SOLEIL, BP48, 91192 Gif sur Yvette, France Laboratoire Matériaux et Phénomènes Quantiques, UMR CNRS 7162, Université de Paris, 75013 Paris, France
David Babonneau, Institut Pprime, Département Physique et Mécanique des Matériaux, UPR CNRS 3346, Université de Poitiers, SP2MI, TSA 41123, 86073 Poitiers Cedex 9, France
René Guinebretière, IRCER, UMR CNRS 7315, Centre Européen de la Céramique, Université de Limoges, 12 rue Atlantis, 87068 Limoges, France

Keywords

nanoscaled Vasarely surfaces, two-dimensional (2D)-self-organization, sapphire vicinal surfaces

Abstract

We demonstrate that convenient thermal treatment of a specific sapphire vicinal surface can induce the formation of a fully two-dimensional (2D) ordered surface made of a periodic assembly of (006) facets. The similarity between the resulting surface topography and patterns represented in the “hexagon series” of paintings by Vasarely is really striking! We thus propose to call these surfaces as “nanoscaled Vasarely surfaces”. We also show that the self-organization process, which is driven by the minimization of the free energy of a closed system, results in a quasi-linear isothermal growth of the facets’ surface area over time.

Graphical Abstract

Publisher

Tsinghua University Press

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