Bookmark for later after I get my PHD in nuclear physics or something.....
I think your proposed PhD should be in molecular biology. The nucleus in this article is the nucleus of a cell, not an atom. It seems to have something to do with transporting ‘stuff’ in and out of said nucleus through molecular sized holes; the structure of those holes being the important point.
I think.
And I’m honestly surprised anyone is still using Angstrom units ... in optical spectroscopy, we abandoned those for nanometers and microns a long time ago.