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采用纳米球刻蚀技术中漂移法在玻璃基片上制备较大面积不同直径的聚苯乙烯小球掩模板,采用磁控溅射技术在掩模板上沉积不同厚度的金薄膜,去除聚苯乙烯小球后,通过扫描电子显微镜观察到周期排列的三角状金纳米颗粒点阵.通过紫外-可见分光光度计测试所制备样品的光吸收特性,发现表面等离子体共振峰随粒径增大发生红移,随金纳米颗粒高度增加发生蓝移.基于Mie理论,利用Matlab软件编程对不同粒径的金阵列光吸收特性进行理论模拟,并与实验结果进行对比.
In the nanosphere etching technique, a large area of different sizes of polystyrene spheres were prepared on a glass substrate by drift method. Magnetron sputtering was used to deposit gold films of different thicknesses on the reticle to remove the small polystyrene The periodic arrays of triangular gold nanoparticles were observed by scanning electron microscopy.The light absorption properties of the prepared samples were measured by UV-Vis spectrophotometer and found that the surface plasmon resonance peaks shifted red-shifted with increasing particle size , Blue-shifted with the increase of gold nanoparticles.According to Mie theory, the light absorption characteristics of gold nanoparticles with different particle sizes were theoretically simulated by Matlab software and compared with the experimental results.