Fig. 2: Pre-equilibrium sensing.
From: Pre-equilibrium biosensors as an approach towards rapid and continuous molecular measurements

a In a short time interval, a molecular receptor with fast kinetics will accumulate more signal, \({y}^{F}(t)\), in response to a rapid change in target concentration, T(t), than one with slow binding kinetics, \({y}^{S}(t)\). b An updated three-component sensor system model that incorporates pre-equilibrium equations and parameters.