Transport mechanisms in a puckered graphene-on-lattice. Issue 16 (11th April 2018)

• Record Type: Journal Article
• Authors: Xu, T.; Díaz Álvarez, A.; Wei, W.; Eschimese, D.; Eliet, S.; Lancry, O.; Galopin, E.; Vaurette, F.; Berthe, M.; Desremes, D.; Wei, B.; Xu, J.; Lampin, J. F.; Pallecchi, E.; Happy, H.; Vignaud, D.; Grandidier, B.
• Is Part Of: Nanoscale. Volume 10:Issue 16(2018)
• Page Start: 7519
• Page End: 7525
• Publication Date: 2018-04-11
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c8nr00678d
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Nanoscale study of the chemical interaction versus strain in a suspended graphene monolayer on SiO2 nanopillar arrays for higher piezoresistive sensitivity. Abstract : Understanding the fundamental properties of graphene when its topography is patterned by the use of a compliant substrate is essential to improve the performances of graphene sensors. Here we suspend a graphene monolayer on SiO2 nanopillar arrays to form a puckered graphene-on-lattice and investigate the strain and electrical transport at the nanoscale. Despite a nonuniform strain in the graphene-on-lattice, the resistivity is governed by thermally activated transport and not the strain. We show that the high thermal activation energy results from a low charge carrier density and a periodic change of the chemical potential induced by the interaction of the graphene monolayer with the nanopillars, making the use of graphene-on-lattice attractive to further increase the electrical response of graphene sensors.