中文摘要：

Cu2 S量子点作为一种新型半导体纳米材料以其特有的化学及光学性质而越来越被人们所关注.本文通过应用COMSOL Multiphysics4.2a这一基于有限元法的模拟软件，运用其中的电磁波模块，结合Maxwell电磁波理论对影响Cu2S量子点产生表面等离激元共振的条件做出了模拟分析，运用Kretschmann棱镜耦合系统建立了理论模型，通过改变量子点的粒径、有机溶剂的折射率、入射光的波长以及对量子点进行包裹等方式，模拟出在不同条件下Cu2S量子点产生表面等离激元共振信号的情况，为Cu2S量子点在表面等离激元共振传感中的实际应用提供了理论依据和参考.

英文摘要：

As a new type of nano-semiconductor material, Cu2 S quantum dot （QD） has received much attention due to its particular chemical and optical properties. In this paper we use COMSOL Multiphysics 4.2a software, select Radio Frequency model and combine the Maxwell’ theory to simulate and analyze the factors influencing Cu2S with its SPR. By using the Kretschmann prism coupling model, changing the QD’ size, the refractive index of QD solvent, the wavelength of incident light and coated substance of the QD, the data about how the SPR appears and the effectsof those factors are obtained. So the simulation results will be a theoretical foundation and reference to the further study.