Light Scattering and Absorption in Chromogenic Materials (CROMOG)

This project focuses on the optical modeling and investigation of smart windows based on SPD chromogenic technology, extending previous models that only considered the active layer. The work addresses the need to model multilayer systems, including substrate layers and transparent conductive thin films, to accurately determine the optical constants (complex refractive index, ñ=n-ik) for each layer. The methodology involves determining optical constants from collimated-collimated (Tcc and Rcc) transmission and reflection components. Subsequently, these constants will be used to derive the intrinsic scattering and absorption coefficients (α and β) or the extensive coefficients (S and K) using the collimated-diffuse (Tcd and Rcd) or diffuse-diffuse (Tdd and Rdd) components. The main focus is to validate and propose an equation for the ACP parameter within the Four-Flux Model (M4F) for the multilayer case, fitting it via least squares to spectrometric measurements. The goal is to develop the matrix-based system for the collimated-diffuse (cd) equations of the multilayer M4F, a previously unsolved task, and to evaluate the suitability of the Two-Flux Model (M2F) for this complex configuration.<br/><br/><b>Goal</b>: <br/>The main objective is to propose a valid equation for the ACP parameter within the framework of the multilayer system (including substrate and thin film layers) through a least-squares fitting process between spectrometric measurements of the SPD device and the model equations. Additionally, the applicability of the Two-Flux Model (M2F) for this multilayer system will be studied.<br/><br/><b>Research lines</b>: <br/>Computer systems and artificial intelligence