Momentum Press is Proud to bring to you Chemical Sensors: Simulation and Modeling Volume 4: Opti cal Sensors,edited by Ghenadii Koroteenkov. This is the fourth of a new multi-volume comprehensive reference work that provides computer simulation and modeling techniques in various fields of chemical sensing and the important applications for chemical sensing such as bulk and surfacc diffusion, adsorption, surface reactions, sintering, conductivity, mass transport, and interphasc interactions.