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Research Article

Vasarely painting at the nanoscale on sapphire crystals

Caroline Matringe1Elsa Thune1Rémy Cavalotti1Ahmad Fakih1Stephan Arnaud2Nils Blanc2Nathalie Boudet2Alessandro Coati3Yves Garreau3,4David Babonneau5René Guinebretière1( )
IRCER, UMR CNRS 7315, Centre Européen de la Céramique, Université de Limoges, 12 rue Atlantis, 87068 Limoges, France
Institut Néel UPR CNRS 2940, CRG D2AM Beamline, ESRF, Université Grenoble Alpes, 38042 Grenoble, France
SixS Beamline, Synchrotron SOLEIL, BP48, 91192 Gif sur Yvette, France
Laboratoire Matériaux et Phénomènes Quantiques, UMR CNRS 7162, Université de Paris, 75013 Paris, France
Institut Pprime, Département Physique et Mécanique des Matériaux, UPR CNRS 3346, Université de Poitiers, SP2MI, TSA 41123, 86073 Poitiers Cedex 9, France
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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.

Nano Research
Pages 2512-2516
Cite this article:
Matringe C, Thune E, Cavalotti R, et al. Vasarely painting at the nanoscale on sapphire crystals. Nano Research, 2020, 13(9): 2512-2516. https://doi.org/10.1007/s12274-020-2888-4
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Received: 27 February 2020
Revised: 22 April 2020
Accepted: 18 May 2020
Published: 03 July 2020
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020
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