IDQ’s visible & NIR (near infrared) SPAD detectors, superconducting nanowire SNSPD systems, and picosecond timing electronics are used in membrane biophysics and single cell dynamics with TCSPC. TCSPC is at the heart of many methods in photoluminescence, phosphorescence and fluorescence lifetime (e.g. FLIM, FRET) and fluorescence correlation spectroscopy (FCS, etc.) and is applied to e.g. protein-protein, receptor-ligand, RNA-protein, and biopolymer interactions, in studies of conformational changes in membrane channels & other hetero-structures, and with quantum dots and other nanomaterials.