Three-Dimensional Chiral Plasmonic Oligomers
Three-Dimensional Chiral Plasmonic Oligomers
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DOI：
10.1021/nl300769x
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发表时间：
2012-05-01
期刊：
影响因子：
10.8
通讯作者：
Giessen, Harald
中科院分区：
文献类型：
--
作者：
Hentschel, Mario;Schaeferling, Martin;Giessen, Harald
生命世界是手性的。手性或结构或分子的手性是生命本身的核心。最近，它已被证明，等离子体激元结构表现出前所未有的和巨大的手性光学响应。在这里，我们表明，真正的三维安排的等离子体“元原子”只表现出手性光学响应，如果类似的等离子体“原子”安排在一个手的方式，因为我们需要共振等离子体耦合。此外，我们证明，这样的颗粒分组，类似于分子系统，具有编码的能力，其三维排列在独特的和调制良好的光谱，使他们成为一个三维手性等离子体标尺的理想候选人。我们的研究结果是至关重要的未来设计和改进的等离子体手性光学系统，例如，超灵敏的对映体传感的单分子水平。
The living world is chiral. Chirality or the handedness of a structure or molecule is at the heart of life itself. Recently, it has been shown that plasmonic structures exhibit unprecedented and gigantic chiral optical responses. Here we show that truly three-dimensional arrangements of plasmonic "meta-atoms" only exhibit a chiral optical response if similar plasmonic "atoms" are arranged in a handed fashion as we require resonant plasmonic coupling. Moreover, we demonstrate that such particle groupings, similarly to molecular systems, possess the capability to encode their three-dimensional arrangement in unique and well-modulated spectra making them ideal candidates for a three-dimensional chiral plasmon ruler. Our results are crucial for the future design and improvement of plasmonic chiral optical systems, for example, for ultrasensitive enantiomer sensing on the single molecule level.