Thanks to the combination of molybdenum disulfide, an emerging two-dimensional material, with spherical metal nanoparticles monomers (Au, Ag), homodimers (Au-Au, Ag-Ag) and heterodimers (Au-Ag), all peaks of Local Surface Plasmon Resonance (LSPR) are broadened. Detailed analyses are conducted regarding the effects of molybdenum disulfide on LSPR of different structures from the view point of different sphere radius and distances between dimers. The results indicate that local surface plasmon resonance for metal nanoparticles and dimer structures can be tuned by coating the molybdenum disulfide and the resonance at the long wavelength can be enhanced. This study has particular significance for LSPR regulation of noble metal nanostructures and SERS application by using molybdenum disulfide.

由于二硫化钼（一种新兴的二维材料）与球形金属纳米粒子单体（Au、Ag）、均二聚体（Au-Au、Ag-Ag）和异二聚体（Au-Ag）的组合，局部表面等离子体的所有峰共振 (LSPR) 被加宽。从不同球半径和二聚体间距的角度，详细分析了二硫化钼对不同结构的LSPR的影响。结果表明，通过涂覆二硫化钼可以调节金属纳米颗粒和二聚体结构的局部表面等离子体共振，并且可以增强长波长的共振。该研究对利用二硫化钼进行贵金属纳米结构的LSPR调控和SERS应用具有特殊意义。