[daddylonglegs]

The abstract [1] states that the technique is "purely material-enabled" but that they still laid out their kinetic inductor in a spiral. It would seem to me that a big advantage for these inductors in RF chips would be the lack of coupling to and from external magnetic fields if you used another layout.

One of the major limitations of existing planar spiral inductors is that their external magnetic fields will couple them to other nearby inductors creating a transformer. The big space saving for these could be the ability to lay down snake shaped inductors next to each other with very low coupling. Do they mention this in the article?

[1] I was unable to read the full article.

[amelius]

You can shield the magnetic coupling with materials with high permeability.

[regularfry]

You can, and that's more bulk, mass, and design complication.