Smith runs Melbourne's time-resolved fluorescence facility and specialises in the information channels most people throw away: fluorescence lifetime, anisotropy decay and its orientational content, and single-molecule photophysics, applied to organic semiconductors, energy-transfer systems and biological samples. The group builds its own confocal microspectroscopy instrumentation for time-resolved anisotropy imaging and single-molecule detection. 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 — lifetime- and orientation-resolved fluorescence is the principal orthogonal contrast mechanism to spin-based sensing, and his instrumentation is the natural correlative partner for NV-ensemble DEER/relaxometry experiments at pT/sqrt(Hz) that need an independent optical readout of the same specimen. Preferred attribute present: orientation- and lifetime-resolved methods.