نوع مقاله : مقاله پژوهشی
نویسندگان
گروه فیزیک ، دانشکده علوم پایه ، دانشگاه قم ، قم
کلیدواژهها
عنوان مقاله English
نویسندگان English
In this study, the influence of the polarization angle on the plasmonics and thermoplasmonics properties of star-shaped gold dimer nanoframes (SGDNs) with five branches is investigated using the finite-difference time-domain (FDTD) method. Notably, varying the polarization angle shifts the first localized surface plasmon resonance (LSPR) peak, while the second plasmonic mode remains unaffected. This asymmetry arises from the anisotropic geometry of the SGDNs. The simulation results show that for light polarization parallel to the dimer axis, the SGDNs can increase the local electric field up to 117 times, and the highest temperature change in the SGDNs, with a value of ΔTmax=140°C, is observed under this light polarization. Also, λ=1800 nm for the SGDNs is identified as an isosbestic point, which is independent of illumination polarization, and this characteristic can be utilized in photothermal therapy.
کلیدواژهها English
