The Power of VNA-Driven Quasi-Optics to Sense Group Molecular Action in Condensed Phase Systems

The versatility for quasi-optical circuits, driven by modern vector network analysers, is demonstrated for the purpose of low energy (meV) coherent spectroscopy. One such example is shown applied to the curing dynamics of a non-mercury-based dental cement. This highlights the special place the methodology holds as a ‘soft-probe’ to reveal the time-resolved energetics of condensed phased systems as they self- organise to adopt their low energy state.