Yaser Hajati

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Graphene is a two-dimensional material with a capability of gas sensing, which is here shown to be drastically improved by inducing gentle disorder in the lattice. We report that by using a focused ion beam technique, controlled disorder can be introduced into the graphene structure through Ga(+) ion irradiation. This disorder leads to an increase in the(More)
In this paper, we theoretically investigate the guiding properties of two vertically coupled cylindrical graphene-coated nanowires (GNWs) integrated with a thin high-index dielectric substrate. We show that the plasmonic properties of the proposed structure can be effectively modulated by changing the thickness of the dielectric substrate, the nanowire(More)
Related Articles Magnetoresistance in graphene-based ferromagnetic/ferromagnetic barrier/superconductor junction J. Appl. Phys. 111, 123908 (2012) Josephson comparator with modified dynamic behavior for improved sensitivity J. Appl. Phys. 111, 123901 (2012) Effect of thermal inhomogeneity for terahertz radiation from intrinsic Josephson junction stacks of(More)
In this paper, we investigate the plasmonic properties of a graphene-silica-silicon (G-SiO₂-Si) multilayer nano-ribbon waveguide in the mid-IR spectral range using the finite element method. Numerical results show that single-mode operation and modal cut-off properties of the G-SiO₂-Si are highly sensitive to the width and chemical potential. In particular,(More)
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