Optical dichroism of lithographically designed silver nanoparticle films
Optical dichroism of lithographically designed silver nanoparticle films
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DOI：
10.1364/ol.21.001099
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发表时间：
1996-08-01
期刊：
影响因子：
3.6
通讯作者：
Aussenegg, FR
中科院分区：
文献类型：
--
作者：
Gotschy, W;Vonmetz, K;Aussenegg, FR
利用电子束光刻技术，在透明基底上制备了形状相同、细长且平行排列的金属纳米粒子薄膜，这些粒子呈规则图案排列。由于粒子的极化率分量存在很大差异，其消光光谱呈现出很强的二向色性。此外，通过改变粒子的纵横比，可以在480到600纳米的宽范围内移动消光最大值的光谱位置。这一结果表明，设计的金属粒子薄膜可用作人工光学薄膜介质。（C）1996美国光学学会
Films of identically shaped, elongated, and parallel-oriented metal nanoparticles arranged in a regular pattern upon a transparent substrate were produced by use of electron-beam lithography. Because of the strong difference in the particles' polarizability components, the optical extinction spectra show strong dichroism. Moreover, one can shift the spectral position of the extinction maximum in a wide range from 480 to 600 nm by variation of the particles' aspect ratio. This result suggests that designed metal particle films can be used as artificial optical thin-film media. (C) 1996 Optical Society of America