Sub-wavelength imaging at infrared frequencies using an array of metallic nanorods

Details Sub-wavelength imaging at infrared frequencies using an array of metallic nanorods Sub-wavelength imaging at infrared frequencies using an array of metallic nanorods

2006-09-15

arxiv.org/abs/cond-mat/0609393v1

Physics

Condensed Matter

Materials Science

12 pages, 16 figures, submitted to PRB

Scientific paper

We demonstrate that an array of metallic nanorods enables sub-wavelength (near-field) imaging at infrared frequencies. Using an homogenization approach, it is theoretically proved that under certain conditions the incoming radiation can be transmitted by the array of nanorods over a significant distance with fairly low attenuation. The propagation mechanism does not involve a resonance of material parameters and thus the resolution is not strongly affected by material losses and has wide bandwidth. The sub-wavelength imaging with $\lambda/10$ resolution by silver rods at 30 THz is demonstrated numerically using full-wave electromagnetic simulator.

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