TY - JOUR ID - 1735 TI - Study of optical properties of Ag ellipsoid nanostructures by discrete dipole approximation method JO - Iranian Journal of Physics Research JA - IJPR LA - en SN - 1682-6957 AU - Ranjbar, SAEED AU - Azarian, Abbas AD - Department of Physics, University of Qom, Qom, Iran AD - Assistant Professor, Department of Physics, University of Qom, Qom, Iran Y1 - 2022 PY - 2022 VL - 21 IS - 4 SP - 589 EP - 596 KW - Ag ellipsoid nanostructures KW - Discrete Dipole Approximation KW - plasmon KW - Cross-sections DO - 10.47176/ijpr.21.4.21178 N2 - In this paper, we investigate optical properties of silver ellipsoid nanostructures (SENs) by means of discrete dipole approximation (DDA), when these nanoparticles are embedded into the water. Absorption, scattering and extinction cross-sections of the SENs were calculated by change of incident wavelength in visible and near infrared 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 transverse dipole and longitudinal dipole modes in this spectrum. UR - https://ijpr.iut.ac.ir/article_1735.html L1 - https://ijpr.iut.ac.ir/article_1735_08c9e29b82ee8c0d150bd43b83258458.pdf ER -