Abstract
We investigated the degree to which the dispersion relation of surface plasmon-polaritons excited on silver nanoantennas depends on length. To accomplish this, dispersion measurements for individual silver nanoantennas with lengths from 220 nm to 2.5 μm were performed using angle-resolved electron energy-loss spectroscopy (AREELS) and spatially resolved EELS (SREELS). AREELS enabled measurements of the dispersion relation extending into the high-energy region of 2.6 eV for a 2.5-μm-long silver nanoantenna, without the need to excite Fabry–Perot-type resonances. Our experiments showed that the dispersion relation of silver nanoantennas that have the same diameter is independent of their individual lengths.
| Original language | English |
|---|---|
| Pages (from-to) | 155-159 |
| Number of pages | 5 |
| Journal | Microscopy |
| Volume | 63 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 1 2014 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Structural Biology
- Instrumentation
- Radiology Nuclear Medicine and imaging
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Saito, H., & Kurata, H. (2014). Direct measurement of dispersion relation for surface plasmon-polaritons on silver nanoantennas. Microscopy, 63(2), 155-159. https://doi.org/10.1093/jmicro/dft048