Micromechanical exfoliation of two-Dimensional materials by a polymeric stamp
Tipo
Artigo
Data de publicação
2016
Periódico
Materials Research Express
Citações (Scopus)
17
Autores
Da Costa M.C.F.
Ribeiro H.B.
Kessler F.
De Souza E.A.T.
Fechine G.J.M.
Ribeiro H.B.
Kessler F.
De Souza E.A.T.
Fechine G.J.M.
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Resumo
© 2016 IOP Publishing Ltd.In this work, an alternative technique to the traditional micromechanical exfoliation of two dimensional materials is proposed, consisting of isolated flakes of graphite and molybdenum disulphide onto polymeric surfaces films. The set made up of polymer and flakes is fabricated by using a hot-press machine called polymeric stamp. The polymeric stamp was used to allocate flakes and also to allow the exfoliation process to take place just in one face of isolated flake. Optical microscopy, Raman spectroscopy and photoluminescence spectroscopy results showed that multilayers, bilayers and single layers of graphene and MoS2 were obtained by using a polymeric stamp as tool for micromechanical exfoliation. These crystals were more easily found because the exfoliation process concentrates them in well-defined locations. The results prove the effectiveness of the method by embedding two-dimensional materials into polymers to fabricate fewer layers crystals in a fast, economic and clean way.
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Assuntos Scopus
Exfoliation process , Micro-mechanical , Molybdenum disulfide , Molybdenum disulphide , Polymeric stamp supplementary material for this article is available online , Polymeric surfaces , Press machines , Two-dimensional materials