Infrared nano-imaging and -spectroscopy of N graphene layers on SiO2 and hexagonal boron nitride substrates

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dc.creatorIngrid David Barcelos
dc.creatorAlisson Ronieri Cadore
dc.creatorLeonardo Cristiano Campos
dc.creatorKenji Watanabe
dc.creatorTakashi Taniguchi
dc.creatorFrancisco Carlos Barbosa Maia
dc.creatorRaul de Oliveira Freitas
dc.creatorÂngelo Malachias de Souza
dc.creatorChristoph Friedrich Deneke
dc.date.accessioned2023-05-29T19:20:27Z
dc.date.accessioned2025-09-09T01:33:55Z
dc.date.available2023-05-29T19:20:27Z
dc.date.issued2017
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.17648/bwsp-2017-79325
dc.identifier.issn2527-0672
dc.identifier.urihttps://hdl.handle.net/1843/54111
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofBrazilian Workshop on Semiconductor Physics
dc.rightsAcesso Aberto
dc.subjectPlasmons
dc.subjectNitreto de boro
dc.subjectFonons
dc.subjectPolaritons
dc.subjectGrafeno
dc.subject.otherGraphene plasmons
dc.subject.otherBoron nitride
dc.subject.otherPhonons polaritons
dc.titleInfrared nano-imaging and -spectroscopy of N graphene layers on SiO2 and hexagonal boron nitride substrates
dc.typeArtigo de evento
local.citation.issue18
local.description.resumoThe optical response of exfoliated graphene on different surfaces (silicon dioxide (SiO2) and hexagonal boron nitride (hBN)) is investigated via scattering-type scanning near-field optical microscopy (s-SNOM) using broadband infrared synchrotron radiation. Basically, we use a commercial s-SNOM microscope integrated into the infrared synchrotron-based beamline to investigate with nanoscale resolution the optical response of different graphene layers on SiO2 or hBN substrates. Comparing atomic force microscopic topography and broadband mid-infrared images (lateral resolution of 30 nm), we confirm that optical response of both systems depends on the specific interactions between graphene and substrate as well as on the number of graphene layers. This dependence is explained by particular interactions of graphene and SiO2, wherein graphene plasmons couple to surface phonon-polaritons of SiO2. In the case of graphene and hBN, we observe coupling of the graphene plasmon to the hyperbolic phonon-polaritons of hBN.
local.identifier.orcidhttps://orcid.org/0000-0002-5778-7161
local.identifier.orcidhttps://orcid.org/0000-0003-1081-0915
local.identifier.orcidhttps://orcid.org/0000-0001-6792-7554
local.identifier.orcidhttps://orcid.org/0000-0002-4998-4624
local.identifier.orcidhttps://orcid.org/0000-0002-3285-5447
local.identifier.orcidhttps://orcid.org/0000-0002-8703-4283
local.identifier.orcidhttps://orcid.org/0000-0002-8556-386X
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://proceedings.science/bwsp/papers/infrared-nano-imaging-and-spectroscopy-of-n-graphene-layers-on-sio2-and-hexagona?lang=en

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