describes the heterogeneity of adsorption (: ≤ 1). For a fixed temperature perturbation, the amplitude can be calibrated by measuring partition coefficients at the initial and final temperatures. For real-world sensing applications, it might be desirable to maintain the initial temperature at ambient conditions (e.g., to save power). Since, in that scenario, the initial temperature might fluctuate, we propose a phenomenological model to describe the temperature dependence of the partition coefficient and account for arbitrary temperature steps: