Optical characterization of plasmonic metallic nanostructures fabricated by high-resolution lithography
Optical characterization of plasmonic metallic nanostructures fabricated by high-resolution lithography
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DOI：
10.1117/1.2832749
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发表时间：
2007
影响因子：
1.5
通讯作者：
Yukie Yokota;K. Ueno;V. Mizeikis;S. Juodkazis;K. Sasaki;H. Misawa
中科院分区：
文献类型：
--
作者：
Yukie Yokota;K. Ueno;V. Mizeikis;S. Juodkazis;K. Sasaki;H. Misawa
利用电子束曝光法和剥离技术在玻璃衬底上制备了高度均匀的银、金和铜纳米棒阵列。利用光学消光光谱研究了与局域表面等离子体(LSP)相关的结构的光学性质，以及它们与纳米棒尺寸的关系。在从可见光到近红外波长的宽光谱范围内，LSP共振散射波段的光谱调谐可以通过调整纳米棒的尺寸、纵横比和高度来实现。观测结果与Gans理论和时域有限差分数值模拟结果定性吻合。
Highly homogeneous arrays of Ag, Au and Cu nanorods were fabricated on glass substrates using electron-beam lithography and lift-off techniques. Optical properties of the fabricated structures related to localized surface plasmons (LSP), and their dependencies on the nanorod size were studied experimentally by optical extinction spectroscopy. Spectral tuning of LSP resonant scattering bands in a wide spectral range, from visible to near-infrared wavelengths, can be accomplished by tailoring of the nanorod dimensions, aspect ratios, and heights. The observed results qualitatively agree with Gans theory and numerical modeling by finite-difference time-domain technique.