Herein, we report the theoretical simulations on the near-field enhancement factor (NEF) and far-field scattering (FFS) properties of (i) gold-silver alloy (GSA) nanospheres, (ii) silica core - GSA nanoshells, (iii) gold core- GSA nanoshells, and (iv) silver core- GSA nanoshells. The role of size-dependent damping (SDD) due to the electron-surface scattering (ESS) and composition of alloy on the NEF and FFS spectra of these nanoparticles are studied in detail. Also, the role of the radius of the alloy nanospheres, radius, and thickness of the alloy nanoshells on the NEF and FFS spectra, is studied with and without considering the SDD due to the ESS. Finally, the plasmon resonance wavelength tunability in dielectric core-metal alloy nanoshells and metal core-metal alloy nanoshells is compared.

在此，我们报告了 (i) 金银合金 (GSA) 纳米球，(ii) 二氧化硅核 - GSA 纳米壳，(iii) 的近场增强因子 (NEF) 和远场散射 (FFS) 特性的理论模拟) 金核- GSA 纳米壳，和 (iv) 银核- GSA 纳米壳。详细研究了由于电子表面散射 (ESS) 和合金成分对这些纳米粒子的 NEF 和 FFS 光谱造成的尺寸相关阻尼 (SDD) 的作用。此外，研究了合金纳米球的半径、合金纳米壳的半径和厚度对 NEF 和 FFS 光谱的作用，在考虑和不考虑由于 ESS 引起的 SDD 的情况下。最后，比较了电介质核-金属合金纳米壳和金属核-金属合金纳米壳中的等离子体共振波长可调性。