In this paper, the optical properties of magnetic-plasmonic core-shell nanoparticles are studied using the Mie theory and DDA method. DDA results are compared with Mie theory results for spherical core-shell NPs as it gives the exact solution. It is observed that the position of LSPR peak in core-shell nanostructures is tuned by changing the cores and shell thickness in the core-shell spherical nanostructures and aspect ratio as well as shell thickness in spheroidal core-shell nanostructures. In addition, the yolk-shell nanostructures exhibit enhancement of LSPR peaks, bandwidth, and their corresponding intensities, as compared to spherical core-shell nanostructures. The calculated absorption spectra at λ_max are obtained in the wavelength range of 336-698 nm. This study opens up the new potential of appropriate core-shell nanostructures in bio-imaging, drug delivery, biomedicine, and therapeutic uses.

本文使用米氏理论和DDA方法研究了磁等离子体核-壳纳米粒子的光学性质。将DDA结果与球形核壳NP的Mie理论结果进行比较，因为它给出了精确的解决方案。观察到，通过改变核-壳球形纳米结构中的核和壳厚度，纵横比以及球状核-壳纳米结构中的壳厚度来调节LSPR峰在核-壳纳米结构中的位置。另外，与球形核-壳纳米结构相比，卵黄-壳纳米结构表现出LSPR峰，带宽及其相应强度的增强。_λmax处的计算吸收光谱在336-698 nm的波长范围内获得λ。这项研究开辟了适当的核壳纳米结构在生物成像，药物递送，生物医学和治疗用途中的新潜力。