I've long wondered if there's a possible application for something like this using 3d printing and electrets. Basically you can freeze an electric field inside of an insulator if you apply it as the material solidifies. I think you should be able to embed electrets inside of 3d prints simply by generating a strong electric field at the print head or slightly behind it. You can also vary the field and embed a 3d electret that can act as, say, a sensor or a hidden ID in the print.
Sounds interesting! Maybe you should try to make this.
Huh? No you can't due to leakage inductance.
Are you simply making a joke about permanent magnets?
How does leakage inductance relate to electrets?
In the exact same manner that leakage capacitance limits the field strength of permanent magnets--only more so by orders of magnitude.
This is, fundamentally, why electrostatic motors have not seen "power" applications. It's far easier to manufacture a high-tolerance lattice in metals than non-metals. https://ieeexplore.ieee.org/document/1038668