Nanophotonics

Light with free-space wavelength at 670nm as guided in a transverse mode by a chain of metal particles with 60nm diameter (period 80nm, along x). Particles have a epsilon of -6.25, lossless. Background is silicon dioxide, epsilon 2.25. Plane: xy plane through chain center.

Hy field:

Dz field:

For a bit more amusement:

Red arrows are for electric field, and blue for magnetic.

The longitudinal mode looks as the following.