Langhammer Christoph, Yuan Zhe, Zorić Igor, Kasemo Bengt
Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden.
Nano Lett. 2006 Apr;6(4):833-8. doi: 10.1021/nl060219x.
The plasmonic properties of nanodisk arrays of Pt, Pd, and, for comparison, Ag are studied over a large size and spectral range and analyzed theoretically by an electrostatic model. Pt and Pd nanodisks exhibit broad localized surface plasmons with a higher sensitivity of the plasmon to the disk aspect ratio compared to Ag. Extinction cross-sections are generally about 50% smaller for Pt and Pd. The spectral plasmon positions, line-widths, and extinction cross-sections are well reproduced by the model.
研究了铂、钯以及作为对比的银的纳米盘阵列的等离子体特性，研究范围涵盖大尺寸和光谱范围，并通过静电模型进行了理论分析。与银相比，铂和钯纳米盘表现出宽泛的局域表面等离子体，且等离子体对盘的纵横比具有更高的灵敏度。铂和钯的消光截面通常比银小约50%。该模型很好地再现了光谱等离子体位置、线宽和消光截面。
