| Autor: |
Budrikis, Zoe, Sellerio, Alessandro L., Bertalan, Zsolt, Zapperi, Stefano |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Scientific Reports 5, 8938 (2015) |
| Druh dokumentu: |
Working Paper |
| 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: |
arXiv |
| Externí odkaz: |
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