Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
Nano Lett. 2011 Aug 10;11(8):3482-8. doi: 10.1021/nl202027h. Epub 2011 Jul 12.
Plasmonics is a rapidly growing field, yet imaging of the plasmonic modes in complex nanoscale architectures is extremely challenging. Here we obtain spatial maps of the localized surface plasmon modes of high-aspect-ratio silver nanorods using electron energy loss spectroscopy (EELS) and correlate to optical data and classical electrodynamics calculations from the exact same particles. EELS mapping is thus demonstrated to be an invaluable technique for elucidating complex and overlapping plasmon modes.
等离子体学是一个快速发展的领域，但在复杂的纳米尺度结构中对等离子体模式进行成像极具挑战性。在这里，我们使用电子能量损失谱（EELS）获得了高纵横比银纳米棒局域表面等离子体模式的空间图谱，并将其与相同粒子的光学数据和经典电动力学计算相关联。因此，EELS 图谱被证明是阐明复杂且重叠的等离子体模式的一种非常有价值的技术。
