5PPRIME - Institut Pprime (Institut PPRIME : Recherche et Ingénierie en Matériaux, Mécanique et Energétique
SP2MI Téléport 2
Boulevard Pierre et Marie Curie
BP 30179
86962 FUTUROSCOPE CEDEX - France)
Université de Poitiers : UPR3346 (15, rue de l'Hôtel Dieu - 86034 Poitiers Cedex - France)
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-organisation process, which is driven by the minimisation of the free energy of a closed system, results in a quasi-linear isothermal growth of the facets' surface area over time.
https://hal.archives-ouvertes.fr/hal-02989537
Contributor : David Babonneau <>
Submitted on : Thursday, November 5, 2020 - 1:42:09 PM Last modification on : Tuesday, November 24, 2020 - 4:00:19 PM
Caroline Matringe, Elsa Thune, Rémy Cavalotti, Ahmad Fakih, Stephan Arnaud, et al.. Vasarely painting at the nanoscale on sapphire crystals. Nano Research, Springer, 2020, 13 (9), pp.2512-2516. ⟨10.1007/s12274-020-2888-4⟩. ⟨hal-02989537⟩