中文摘要：

基于光学Kretschmann棱镜结构,建立了表面等离子体共振（SPR）传感器模型并进行了模拟计算,得到了基于聚乙烯和聚丙烯酸的多层膜系的SPR传感器共振光谱中共振波长随共振角度的演化.模拟分析表明,聚合物的厚度增加导致共振峰的红移,最佳厚度为100nm左右;聚合物薄膜可实现SPR共振峰的可控的红移和传感检测,聚乙烯相对于聚丙烯酸有较高分辨率;金纳米颗粒具有增强表面等离子体共振信号的作用,共振波长因其填充因子的增大而发生红移现象,半峰宽明显变宽,填充因子最佳值为0.2.

英文摘要：

A surface plasmon resonance （SPR） sensor model is developed based on a Kretschmann prism structure and theoretical simulation is conducted. The evolution of the resonance wavelength of SPR sensor based on polyethylene and polyacrylic acid multilayer film with resonance angle change is obtained. The simulated results demonstrate that the thickness increase of the polymer enhances resonance peak red shift, and the optimal thickness of polymer is about 100 nm. Using polymer film can realize the controllable red shift of the SPR resonance peak, sensing detection. The resolution of polyethylene is higher than that of polyacrylic acid, surface plasmon resonance signal can be enhanced by gold nanoparticles, and SPR wavelength has red shift and full width at half maximum （FWHM） is also wider With the increase of filling factor. The optimal filling factor is 0.2.