Sean, REF: https://spaz.org/~magi/ ... hope this is not off-topic Have you tried setting up a pair of identical nested tubes - one as transmitter and one as receiver, separated by significant distance - in order to see if there is unusual efficiency in transmitting power? The lore of "longitudinal/scalar waves" seems strangely applicable to this design. Also - how does the resonant frequency scale with smaller and smaller geometry?
It would be a huge challenge to reduce the structure to micro or nano geometry for lithography but maybe not impossible. Heck perhaps the operative mechanism can itself be fractalized
