论文部分内容阅读
通过化学浸润和光还原法在聚合物薄膜基片 (三醋酸纤维树酯 )上直接沉积制备出大面积范围内颗粒大小、表面密度等分布均匀的纳米金属银颗粒 .紫外吸收光谱和高分辨透射电镜分析表明 ,在室温实验条件下调整化学溶液浓度 ,可获得颗粒直径在 2— 5nm范围内的球形金属纳米银颗粒 .通过接触拷贝方式 ,获得了基于银纳米颗粒形成的全息光栅
The nano-sized silver particles with uniform particle size and surface density were prepared by direct chemical deposition and photoreduction on the polymer film substrate (triacetate fiber) .The UV absorption spectra and high resolution transmission electron microscopy The analysis shows that spherical metallic nano-silver particles with diameter between 2 and 5 nm can be obtained by adjusting the concentration of chemical solution under the experimental conditions at room temperature. By means of contact copying, a holographic grating based on silver nano-particles