Abstract
We developed a method to fabricate an array of silver non-planar nano-arc-gaps via inverted hemispherical colloidal lithography and shadow metal evaporation methods. It is found that there is a localized surface plasmon mode which results in extraordinary optical transmission. The electric field is strongly localized at the nano-arc-gap region and therefore induces a resonance that has an ultra-small mode volume of less than 2.44 × 10 -6 μm 3. The ratio of the quality factor to the mode volume is as high as 1.44 × 10 6 μm -3. This would be valuable for the design of optoelectric circuits.
| Original language | English |
|---|---|
| Pages (from-to) | 2255-2259 |
| Number of pages | 5 |
| Journal | Nanoscale |
| Volume | 4 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 7 Apr 2012 |
| Externally published | Yes |
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