Substrate-Selective Adhesion of Metal Nanoparticles to Graphene Devices.

ABSTRACT: Nanostructured electronic devices, such as those based on graphene, are typically grown on top of the insulator SiO₂. Their exposure to a flux of small size-selected silver nanoparticles has revealed remarkably selective adhesion: the graphene channel can be made fully metallized, while the insulating substrate remains coverage-free. This conspicuous contrast derives from the low binding energy between the metal nanoparticles and a contaminant-free passivated silica surface. In addition to providing physical insight into nanoparticle adhesion, this effect may be of value in applications involving deposition of metallic layers on device working surfaces: it eliminates the need for masking the insulating region and the associated extensive and potentially deleterious pre- and post

SUBMITTER: Edwards PJ 

PROVIDER: S-EPMC10364134 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature