Cloak of Invisibility

[Munkay]

Military Application issue:  Infrared sensors. 

Infrared is within the broad category of wave emissions.  I'd guess an IR sensor could be tuned, or manually adjusted, to mitigate the effects of a superlens operation in that frequency spectrum, if IR wasn't beyond the capability of a superlens to mask in the first place.  (My gut feeling says IR emissions would not be masked by this.)  I'd have to read the paper and se if they bounded the problem in the "visible light" range, or if it was approached across a broader spectrum of wavelengths.

Occhi

I'll readily admit there is a lot about optics that I do not know about. Occhi, do you mind expanding your post a bit more, to help me fill in the gap?

My understand of a superlens is that it is a lens made with a negative refraction rating (or one that approaches a near zero refraction index). By cutting down on defraction of light, they can be used in applications like microscopes to see at higher magnifications than previously possible due to the "more pure" source of light.

Are you using the term "superlens" to describe anything (other than a lens) which has the capability of a negative refraction index?

Cheers,

Munk