Volume 18, Issue 2 ((Iranian Journal of Physics Research,Summer 2018)                   IJPR 2018, 18(2): 221-227 | Back to browse issues page

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Department of Physics, University of Qom, Qom, Iran , xehi50@yahoo.com
Abstract:   (2236 Views)

In this paper, we investigate optical properties of silver pyramid nanostructures (SPNs) by means of discrete dipole approximation (DDA), when these nanoparticles are embedded into the water. Absorption, scattering and extinction cross-sections of the SPNs were calculated by change of incident wavelength in visible and near infra-red region. Moreover, height, wavelength and full width at half maximum (FWHM) of extinction cross-section peaks (due to plasmon resonances) were studied by change of nanostructure's size and dielectric constant of medium. Our results show that, there are only two peaks of dipole and quadruple modes in this spectrum.

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Type of Study: Research | Subject: General