From quantum to continuum mechanics in the delamination of atomically-thin layers from substrates.

ABSTRACT: Anomalous proximity effects have been observed in adhesive systems ranging from proteins, bacteria, and gecko feet suspended over semiconductor surfaces to interfaces between graphene and different substrate materials. In the latter case, long-range forces are evidenced by measurements of non-vanishing stress that extends up to micrometer separations between graphene and the substrate. State-of-the-art models to describe adhesive properties are unable to explain these experimental observations, instead underestimating the measured stress distance range by 2-3 orders of magnitude. Here, we develop an analytical and numerical variational approach that combines continuum mechanics and elasticity with quantum many-body treatment of van der Waals dispersion interactions. A full relaxation of th

SUBMITTER: Hauseux P 

PROVIDER: S-EPMC7125152 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature