Barry works on the detection of the 21-cm signal from the Epoch of Reionisation with the Murchison Widefield Array and, prospectively, SKA-Low. Her specialty is calibration systematics: she has shown how small errors in the sky and beam model propagate into spectral structure that mimics or swamps the cosmological signal, and has developed the diagnostic and mitigation framework that current MWA upper limits rest on. This is a measurement whose entire difficulty is instrumental. Positioned against the established body of NV-ensemble quantum sensing work — DEER, nanoscale NMR and T1 relaxometry protocols operating at pT/sqrt(Hz) field sensitivity — the intellectual structure is identical to a hard magnetometry measurement: raw sensitivity is adequate, and everything depends on understanding correlated, instrument-induced systematics well enough to subtract them below the signal. Early-career PI (DECRA). Borderline astronomy inclusion, kept on the systematics/instrument criterion.