【摘要】 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更多还原

【Abstract】 Silver nanoparticles with homogeneous size and density were deposited on the surface of a cellulose triacetate film through chemical dipping and photoreduction. UV-VIS absorption spectra and high resolution transmission electron microscopy (HRTEM) show that spherical silver nanoparticles with 2—5nm diameter were formed effectively at room temperature by properly modulating the concentration. By contact copying technique,holographic gratings were constructed with metallic nanoparticles embedded in the polymer film.更多还原