Superlubric Graphullerene.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39158098.
- Also identified by DOI 10.1021/acs.nanolett.4c02794 and PMC identifier 11363119.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Graphullerene (GF), an extended quasi-two-dimensional network of C<sub>60</sub> molecules, is proposed as a multicontact platform for constructing superlubric interfaces with layered materials. Such interfaces are predicted to present very small and comparable sliding energy corrugation regardless of the identity of the underlying flat layered material surface. It is shown that, beyond the geometrical effect, covalent interlinking between the C<sub>60</sub> molecules results in reduction of the sliding energy barrier. For extended GF supercells, negligible sliding energy barriers are found along all sliding directions considered, even when compared to the case of the robust superlubric graphene/h-BN heterojunction. This suggests that multicontact architectures can be used to design ultrasuperlubric interfaces, where superlubricity may persist under extreme sliding conditions.