25 شهریور 1398
افشين مرادي

افشین مرادی

مرتبه علمی: دانشیار
نشانی: کرمانشاه، بزرگراه امام خمینی (ره)، دانشگاه صنعتی کرمانشاه، گروه فیزیک مهندسی
تحصیلات: دکترای تخصصی / فیزیک، نانو اپتیک
تلفن: 08338305010
دانشکده: دانشکده فناوری اطلاعات

مشخصات پژوهش

عنوان
Damping properties of plasmonic waves on graphene
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
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پژوهشگران افشین مرادی (نفر اول)

چکیده

By considering the friction force due to the interaction of plasmonic waves and graphene lattice, the damping properties (lifetime and propagation length) of long-wavelength plasmonic waves on a monolayer graphene are studied by means of a perturbative method. Electronic excitations on the graphene surface are modeled by an infinitesimally thin layer of massless electron gas, which is described by means of the linearized hydrodynamic theory. The analytical expressions for the frequency dependence of damping function, the propagation length and the lifetime of long-wavelength surface waves on graphene with small intrinsic damping are derived and analyzed. Also, simple expressions for the stored and dissipated energy densities of the surface waves are presented.