“Soft Matter” refers to those materials constituted by structural units bigger than atoms, that typically display a collective behavior. Colloids, emulsions, pastes, gels, liquid crystals and surfactants are some examples of soft materials. They all have in common two characteristics: non-linear responses when a stress is applied; slow and non-equilibrium response. In our laboratories, we are investigating colloidal suspensions behavior, dense emulsions, biological samples and liquid crystals.