Study of Superfluid \(^3\)He Under Nanoscale Confinement

We review recent experiments in which superfluid \(^3\)He has been studied under highly controlled confinement in nanofluidic sample chambers. We discuss the experimental challenges and their resolution. These methods open the way to a systematic investigation of the superfluidity of \(^3\)He films, and the surface and edge excitations of topological superfluids.