We study linear and nonlinear mode properties in a periodically patterned graphene sheet. We demonstrate that a subwavelength one-dimensional photonic lattice can be defined across the graphene monolayer, with its modulation depth and correspondingly the associated photonic band structures being controlled rapidly, by an external gate voltage. We find the existences of graphene lattice solitons...

Mechanically exfoliated graphene mounted on a SiO2/Si substrate was subjected to HF/H(2)O etching or irradiation by energetic protons. In both cases gas was released from the SiO2 and accumulated at the graphene/SiO2 interface resulting in the formation of "bubbles" in the graphene sheet. Formation of these "bubbles" demonstrates the robust nature of single layer graphene membranes, which are c...

graphene sheet including single vacancy, double vacancy and stone-wales with armchair and zigzag structure was simulated using molecular dynamics simulation. the effect of defects on shear’s modulus, shear strength and fracture  strain was investigated. results showed that these shear properties reduce when the degrees of all kinds of defects increase. the dangling bond in sv and dv defected gr...

Graphene, after its first production in 2004 have received lots of attentions from researchers because of its unique properties. High mobility, high sensitivity, high selectivity and high surface area make graphene excellent choice for bio application. One of promising graphene base device that has amazingly high sensitivity is graphene field-effect transistor (GFET). This review selectively su...

a r t i c l e i n f o Scanning tunneling microscopy shows that a layer of graphene can be grown on the hex-reconstructed Pt (100) surface and that the reconstruction is preserved after growth. A continuous sheet of graphene can be grown across domain boundaries and step edges without loss of periodicity or change in direction. Density functional theory calculations on a simple model system supp...

This is an example for the application of the LCAO method to bandstructure calculation. We will apply this method to a two-dimensional sheet of graphite, called graphene, and carbon nanotubes, which are slices of graphene rolled into a seamless cylinder. Graphene and carbon nanotubes (CN) have peculiar electronic properties, which can be derived by the LCAO method (also called tight-binding met...

A leaky-wave antenna is proposed that furnishes two-dimensional (2-D) beam scanning in both elevation and azimuth planes via electrical control in real time, and at a single frequency. The structure consists of a graphene sheet on a metal-backed substrate. The 2-D beam-scanning performance is achieved through the proper biasing configuration of graphene. Traditional pixel-by-pixel electrical co...

We propose a scheme for coupling laser light into graphene plasmons with the help of electrically generated surface acoustic waves. The surface acoustic wave forms a diffraction grating which allows us to excite the long lived phononlike branch of the hybridized graphene plasmon-phonon dispersion with infrared laser light. Our approach avoids patterning the graphene sheet, does not rely on comp...

We discuss the renormalization of the polarizability of a nanoparticle in the presence 1 of either (i) a continuous graphene sheet or (ii) a plasmonic graphene grating, taking into account 2 retardation effects. Our analysis demonstrates that the excitation of surface plasmon-polaritons 3 in graphene produces a large enhancement of the real and imaginary parts of the renormalized 4 polarizabili...

Chemical doping is an effective method of reducing the sheet resistance of graphene. This thesis aims to develop an effective method of doping large area Chemical Vapor Deposition (CVD) graphene using Iron (1II) Chloride (FeCl 3). It is shown that evaporating FeCl3 can increase the carrier concentration of monolayer graphene to greater than 7x1 0 3 CM2 and achieve resistances as low 72t2/sq. We...