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Near-field Raman spectroscopy of nanocarbon materials

Novotny, Lukas (ETH-Zürich)

We use a laser-irradiated optical antenna to map out phonons and excitons in nanocarbon materials (graphene, carbon nanotubes, carbyne) with a spatial resolution of 10nm. We resolve local defects as well as interactions with the local environment. We observe that defects lead to a band renormalization and to trapping of excitons.

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