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Pastimes : IT CAME FROM OUTER SPACE -- Ignore unavailable to you. Want to Upgrade?

To: Volsi Mimir who wrote (461)	3/3/2005 11:20:50 AM
From: kinkblot	Respond to of 480

Thanks. I saved PDF of Alù and Engheta's paper. I have some experience with coatings, artificial materials and so on. On page one of the paper, the authors note that, to achieve the effect in the visible and IR, materials candidates include several noble metals as well as artificial materials synthesized to achieve low permittivity in that range (the case e(c) = 0.1e(0) in the Figures). So that is doable. However, if the phenomenon depends on spherical or cylindrical geometry, it is limited; there are many curious electromagnetic effects associated with perfect spheres. That geometry is a favorite of theoretical types because calculations are simple and elegant. Total absorption may be a better way to go, imho.

To: Volsi Mimir who wrote (461)	3/3/2005 11:29:38 AM
From: kinkblot	Read Replies (1) \| Respond to of 480

By coincidence, I'm currently reading How to Be Invisible by an extremely paranoid individual named J. J. Luna (pseudonym?). He first became invisible to stay clear of the Spanish Secret Police under Generalissimo Franco, but now (he remains invisible) it is just a precaution against the unexpected. Anyway, the book does contain "a slight amount perhaps about the way better of surviving and of taking avoiding a step on officially toes at least for now," in keeping with the thread header.