Is there any way to view real time electric fields? You can "view" magnetic fields with iron filings in oil solution. How about something like that to view electric fields? It would be nice to point a camera at something, like a matching network on microstrip, and actually see the standing waves. Is there any way of devising such a thing? maybe scanning the circuit with electron beams? An array of hall effect sensors?
Any ideas? Is there something that we can scan the circuit with that the electric field will alter either in reflection off the microstrip surface or transmission thru the microstrip surface to the backside?
For instance, ions are electrically charged and should interact with an electric field. Can we scan a microstrip circuit with an ion gun, and measure the acceleration/deceleration and plot the Efield in real time?
It would be more useful if the method did not require that the microstrip circuit be inside of a vacuum chamber!