Bilayer graphene thesis
1 1 synthesis, characterization, and selected properties of graphene cnr rao, urmimala maitra, and hss ramakrishna matte 11 introduction carbon nanotubes (cnts) and graphene are two of the most studied materials. University of wollongong research online university of wollongong thesis collection 1954-2016 university of wollongong thesis collections 2010 electronic and optical properties of graphene. Thesis supervisor accepted by leslie a kolodziejski chair, department committee on graduate students 1 (this page is left intentionally blank) 2 bilayer graphene. National university of singapore honours thesis creation of local band gap in bilayer graphene author: nguyen duy quang supervisor: jens martin abstract ever since its theoretical prediction [1–3], opening a band gap in graphene. Our bilayer graphene were consistently found to be between 089nm and 12nm 37 figure 25raman spectra taken from cvd grown bilayer graphene (red solid line). Abstract in this thesis, we present transport experiments on both single and bilayer graphene devices at cryogenic temperatures charge transport is strongly in.
Atomic scale properties of epitaxial graphene grown on sic(0001) a thesis presented to the academic faculty by gregory michael rutter in partial fulfillment. Graphene fig 2 shows an optical micrograph of a graphene flake attached to a bilayer and few-layer graphene is the light violet part fig 2 raman spectra of monolayer graphene (left), an optical micrograph of a graphene sample (right) fig 3 shows bilayer graphene, as determined by the shape of the 2d peak fig 3 bilayer graphene. Multi-wavelength raman characterization of back-gated monolayer and bilayer graphene thesis submitted to the halmstad university, sweden for. C60 intercalated bilayer graphene abstract the main objective of this thesis was to synthesize a two-dimensional heterostructure consisting of two remarkable carbon structures: two graphene sheets with a c60 fullerene monolayer in between, also known as carbon burger. My thesis begins with the investigation of cvd synthesis of graphene thin films in chapter 1, including the direct growth of bilayer graphene on insulating substrates. University of california, irvine immobilization of mitochondria on graphene thesis submitted in partial satisfaction of the requirements for the degree of.
Graphene we will now brieﬂy describe the bandstructure of bilayer graphene and demonstrate how it can be used to open a bandgap (needed to set the boundaries of the qd) in fig 21 the honey comb lattice structure. Conductance modulation in bilayer graphene nanoribbons a thesis submitted in partial fulfillment of the requirements.
Bilayer graphene is a material consisting of two layers of graphene one of the first reports of bilayer graphene was in the seminal 2004 science paper by geim and. Electronic and magnetic properties of two dimensional crystals by hani hatami a thesis submitted to the victoria university of wellington in fulﬁlment of the requirements for the degree of. Figure 18 lattice structure of bilayer graphene with the relevant tight-binding parameters shown figure 19 (a) band gap opening in bilayer graphene due to interlayer potential difference induced by the shift of fermi level the optical conductivity measure(b) d in bilayer graphene with different doping level under an electrolyte top gate. In this thesis i will present several topics including fabrication of graphene devices, electrical and mechanical properties of graphenei will start with a brief.
Graphene-based field-e ect transistors a dissertation submitted to the École polytechnique fédérale de lausanne by adarsh singh sagar 2011. Graphene synthesis and characterization on copper ali mohsin university of iowa copyright 2012 ali mohsin this thesis is available at iowa research online: follow this and additional works at: part of theelectrical and computer engineering commons recommended citation mohsin.
Bilayer graphene thesis
Chapter 2 the tight-binding approach and the resulting electronic structure in this chapter, we describe the crystal and reciprocal lattices of bilayer graphene.
- 18 chapter 3 band model of the graphene bilayer many of the special properties of the graphene bilayer have their origins in its lattice structure that results in the peculiar band structure that wewilldiscussindetailinthis.
- Tunable band gap in functionalized epitaxial graphene indra prasad sapkota clark atlanta university follow this and additional works at:.
- Thesis of tblg using chemical vapor deposition (cvd) and charac-terization of twist angle using transmission electron microscopy (tem) and raman spectroscopy.
- Impurity scattering in bilayer graphene is similar to that in single layer graphene, and in good agreement with theory the widely observed lower mobility in bilayer graphene on sio 2 is likely due to another source of disorder second, the dielectric screening of bilayer graphene is modified by deposition of ice overlayers at low temperature in uhv.
- We have achieved accuracy better than 5e-9 in graphene devices produced at nist at record high current level of 072 ma, surpassing the highest critical currents reported in any gaas heterostructure or graphene device.
Electronic and structural properties of silicene and graphene layered structures a thesis submitted in partial fulﬁllment of the requirements for the degree of. Western university [email protected] electronic thesis and dissertation repository february 2015 edge states and quantum hall phases in graphene. The special properties of graphene can be largely influenced by point defects in the lattice however, tem studies of topological defects in few-layered graphene have rarely been reported in this work, the two simplest forms of point defects monovacancy and divacancy in twisted bilayer graphene are characte. Van der waals density functional studies of hydrogenated and lithiated bilayer graphene by re lwe edwin mapasha submitted in partial ful lment of the requirements. This thesis describes experiments performed on ultra-high-quality dual-gated bilayer graphene heterostructures in the quantum hall regime, electric and magnetic.