Plasmonic focusing reduces ensemble linewidth of silver-coated gold nanorods
Plasmonic focusing reduces ensemble linewidth of silver-coated gold nanorods
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DOI：
10.1021/nl080720k
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发表时间：
2008-06-01
期刊：
影响因子：
10.8
通讯作者：
Soennichsen, Carsten
中科院分区：
文献类型：
--
作者：
Becker, Jan;Zins, Inga;Soennichsen, Carsten
银包覆金纳米棒通过改变粒子形状与等离子体共振波长的关系来减小系综等离子体共振线宽。这种变化，我们称之为“等离子体聚焦”，导致相同颗粒尺寸分布的共振波长变化较小。我们还发现较小的单粒子线宽比较共振在相同的波长，但表明，这热有助于系综线宽变窄。
Silver coating gold nanorods reduces the ensemble plasmon line width by changing the relation connecting particle shape and plasmon resonance wavelength. This change, we term "plasmonic focusing", leads to less variation of resonance wavelengths for the same particle size distribution. We also find smaller single particle linewidth comparing resonances at the same wavelength but show that this does hot contribute to the ensemble linewidth narrowing.