New superlens opens door to nanoscale optical imaging and high-density optoelectronic devices

UC Berkeley Press Release ^ | April 21, 2005 | Sarah Yang

[edwin hubble]

from your reply #39
"The surface plasmons will absorb light depending on the thicknes of the film. At the thin end, it will look yellow and at the thick end it will look blue."

Yes, the thicker the film, the longer the wavelength absorbed.
(different phenomena, but results analogous to the differential Rayleigh scattering of blue light giving red sunsets and blue sky)

On Negative Index of Refraction
The simpler description of Index of Refraction is:
(speed of light in a vacuum) / (speed of light in the medium).
Which would always be positive and greater than or equal to 1.

Here is a description of experiments on materials with a negative index of refraction:

The Reality of Negative Refraction May 2003

http://physicsweb.org/articles/world/16/5/3/1

[Coleus]

New superlens opens door to nanoscale optical imaging and high-density optoelectronic devices

[SunkenCiv]

Blast from the Past.