2134/25775 Alma J. Mendoza Alma J. Mendoza Eduardo Guzman Eduardo Guzman Fernando Martinez-Pedrero Fernando Martinez-Pedrero Hernan Ritacco Hernan Ritacco Ramon Rubio Ramon Rubio Francisco Ortega Francisco Ortega Victor Starov Victor Starov Reinhard Miller Reinhard Miller Particle laden fluid interfaces: Dynamics and interfacial rheology Loughborough University 2017 Particle laden interfaces Diffusion coefficient of trapped particles Interfacial dilational and shear rheology Interfacial microrheology Rheology of particle–surfactant monolayers Chemical Engineering not elsewhere classified 2017-07-13 13:00:15 Journal contribution https://repository.lboro.ac.uk/articles/journal_contribution/Particle_laden_fluid_interfaces_Dynamics_and_interfacial_rheology/9240290 Wereviewthe dynamics of particle laden interfaces, both particlemonolayers and particle+surfactantmonolayers. We also discuss the use of the Brownian motion of microparticles trapped at fluid interfaces for measuring the shear rheology of surfactant and polymer monolayers. We describe the basic concepts of interfacial rheology and the different experimental methods for measuring both dilational and shear surface complex moduli over a broad range of frequencies, with emphasis in the micro-rheology methods. In the case of particles trapped at interfaces the calculation of the diffusion coefficient from the Brownian trajectories of the particles is calculated as a function of particle surface concentration.We describe in detail the calculation in the case of subdiffusive particle dynamics. A comprehensive review of dilational and shear rheology of particle monolayers and particle+surfactant monolayers is presented. Finally the advantages and current open problems of the use of the Brownian motion ofmicroparticles for calculating the shear complex modulus of monolayers are described in detail.