Energy transfer due to evanescent fields

[Karthiksrao]

Hi,

When 2 bodies are close together such that their evanescent fields are interacting, what sort of energy transfer can I expect to take place between the bodies ? That is, how can I expect the energy transfer to vary with gap (i.e exponential variation? some sort of a power law? )

There will be energy transfer due to surface polaritons - but I am more interested in energy transfer due to frequencies other than that which support surface polaritons.


Thanks,
Karthik

 

[Maxwell's Demon]

Here's a good paper that details a couple of different evanescent power transfer circuits and their efficiencies as a function of radius: http://www.mit.edu/~soljacic/wireless-power_AoP.pdf