Could be useful for small, silent drones as well:
https://spectrum.ieee.org/automaton/robotics/drones/pennysized-ionocraft-flies-with-no-moving-parts
edited: added this quote from near the end of the article:
"In terms of what atmospheres make sense, a first order statement would be that, as you allude to, the thicker the atmosphere the better as ion mobility will decrease and yield a higher force output. There is not much literature that I have found on corona discharge based ionization in gas mixtures besides air, pure N2, or pure O2 at near STP. I would be very interested in assessing EHD in conditions approximating those found on other planets/moons— my silicon-based electrodes could at least withstand the temperatures of Venus! This seems like a great future collaboration."
https://spectrum.ieee.org/automaton/robotics/drones/pennysized-ionocraft-flies-with-no-moving-parts
edited: added this quote from near the end of the article:
"In terms of what atmospheres make sense, a first order statement would be that, as you allude to, the thicker the atmosphere the better as ion mobility will decrease and yield a higher force output. There is not much literature that I have found on corona discharge based ionization in gas mixtures besides air, pure N2, or pure O2 at near STP. I would be very interested in assessing EHD in conditions approximating those found on other planets/moons— my silicon-based electrodes could at least withstand the temperatures of Venus! This seems like a great future collaboration."