- https://www.cells.es/en/media/events/alba-public-events/bottom-up-synthesis-of-graphene-nanostructures-from-0d-qdots-to-1d-nanoribbons-and-2d-nanoporous-graphene
- Bottom-up synthesis of graphene nanostructures: from 0D Qdots, to 1D nanoribbons and 2D nanoporous graphene
- 2019-04-29T12:00:00+02:00
- 2019-04-29T13:00:00+02:00
- Aitor Mugarza from ICN2
- What
- events
- When
- Apr 29, 2019 from 12:00 PM to 01:00 PM (Europe/Madrid / UTC200)
- Where
- ALBA Synchrotron, Marie Curie Meeting Room
- Contact Name
- Manuel Valvidares
- Contact Phone
- 935924353
- Web
- Visit external website
- Add event to calendar
-
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Tailoring structural, chemical and electronic properties of graphene confers multiple functionalities to this material, making it attractive to very diverse applications in (opto)electronics, plasmonics, molecular sensing and filtering. For instance, semiconducting gaps can be induced by reducing its dimensions to the nanometer scale, whereas introducing pores of similar sizes turns impermeable graphene into the most efficient molecular sieve membrane. In both cases, the interesting scale for applications is below the ~5 nm limit of top-down fabrication techniques, a regime where bottom-up synthesis can be particularly efficient.
Here I will report different on-surface methods to grow graphene quantum dots with controlled shape and edge structure [1,2], periodic arrays of nanoribbons with lengths exceeding 100 nm [3,4], and nanoporous graphene sheets that combine 1nm size ribbons and pores [5]. The atomically precise nanostructures are characterized by STM, enabling the correlation of novel electronic states with the particular structures. Their potential application in devices is illustrated by gate modulated transport measurements using field-effect transistors based on nanoporous graphene sheets.
Keywords: graphene, nanomaterials, on-surface synthesis, scanning tunneling microscopy
