Really an interesting one,
Yeah, these magnetosomes are pretty interesting as the small particles present in these microbes proposes a wide applicability in the biological world. Sometime back I got an idea also related to these magnetosomes to write a project in the course work, may be I will write a project on it in future but still a lot to work on that, as it was just an idea.
Definitely, you may be seeing these in a very near future being used is diagnosis treatment and all.
and thanks for mentioning my article :)