1. Substrate-Selective Adhesion of Metal Nanoparticles to Graphene Devices
- Author
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Edwards, Patrick J., Stuart, Sean, Farmer, James T., Shi, Ran, Long, Run, Prezhdo, Oleg V., and Kresin, Vitaly V.
- Subjects
Physics - Atomic and Molecular Clusters ,Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed Matter - Materials Science ,Physics - Chemical Physics - 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 postprocessing., Comment: 29 pages
- Published
- 2023
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