Wrinkle motifs in thin films
| Autor: | Alessandro L. Sellerio, Zoe Budrikis, Zsolt Bertalan, Stefano Zapperi |
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| Přispěvatelé: | Department of Applied Physics, Aalto-yliopisto, Aalto University |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Scientific Reports Scientific reports (Nature Publishing Group) 5 (2015). doi:10.1038/srep08938 info:cnr-pdr/source/autori:Budrikis Z.; Sellerio A.L.; Bertalan Z.; Zapperi S./titolo:Wrinkle motifs in thin films/doi:10.1038%2Fsrep08938/rivista:Scientific reports (Nature Publishing Group)/anno:2015/pagina_da:/pagina_a:/intervallo_pagine:/volume:5 |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/srep08938 |
| Popis: | Delamination of coatings and thin films from substrates generates a fascinating variety of patterns, from circular blisters to wrinkles and labyrinth domains, in a way that is not completely understood. We report on large-scale numerical simulations of the universal problem of avoidance and coalescence of delamination wrinkles, focusing on a case study of graphene sheets on patterned substrates. By nucleating and growing wrinkles in a controlled way, we are able to characterize how their interactions, mediated by long-range stress fields, determine their formation and morphology. We also study how the interplay between geometry and stresses drives a universal transition from conformation to delamination when sheets are deposited on particle-decorated substrates. Our results are directly applicable to strain engineering of graphene and also uncover universal phenomena observed at all scales, as for example in geomembrane deposition. |
| Databáze: | OpenAIRE |
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