I don't understand... what possible benefit can using the fluid (saline) be? Inductive charging could care less about the presence of saline solution. Why radio frequencies?
Radio waves are absorbed by water so they have to use low frequency for RFID communication. I have to ask... why RFID?
The lens would already need to be powered, why RFID?
I honestly don't understand how this approach makes any sense... again, what am I missing?