29 مهر 1399
افشين مرادي

افشین مرادی

مرتبه علمی: دانشیار
نشانی:
تحصیلات: دکترای تخصصی / فیزیک، نانو اپتیک
تلفن: 08338305010
دانشکده: دانشگاه صنعتی کرمانشاه

مشخصات پژوهش

عنوان
Dispersion Properties of High- and Low-Frequency Electrostatic Oscillations of Plasma Spheres: Application to the Metallic Nanoparticles
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
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پژوهشگران افشین مرادی (نفر اول)

چکیده

The dispersion properties of high- and low-frequency electrostatic oscillations of a spherical metallic plasma consisting of hot electrons and cold ions are investigated. The main interest and the key first applications of this system are the spherical metal nanoparticles. General expressions of dispersion relations are obtained for the so-called surface and bulk plasmon waves, and surface and bulk ion-acoustic waves in spherical geometry, using hydrodynamic equations and Poisson equation with appropriate boundary conditions. Numerical results show that dispersion effects become large for metallic particles of small radii, particularly in the range of few nanometers.