The physics of foams and emulsions has traditionally been studied using bulk foam/emulsion tests and single film platforms such as the Scheludko cell. Recently there has been a renewed interest in a third class of techniques that we term as single bubble/drop tests, which employ isolated whole bubbles and drops to probe the characteristics of foams and emulsions. Single bubble and drop techniques provide a convenient framework for investigating a number of important characteristics of foams and emulsions, including the rheology, stabilization mechanisms, and rupture dynamics. In this review we provide a comprehensive discussion of the various single bubble/drop platforms and the associated experimental measurement protocols including the construction of coalescence time distributions, visualization of the thin film profiles and characterization of the interfacial rheological properties. Subsequently, we summarize the recent developments in foam and emulsion science with a focus on the results obtained through single bubble/drop techniques. We conclude the review by presenting important venues for future research.
Microswimmers create bicontinuous emulsions in binary fluids
Indian Institute of Technology Kharagpur（印度理工学院卡拉格普尔分校）；EMBL Barcelona（欧洲分子生物学实验室巴塞罗那分部）；Barcelona Collaboratorium for Modelling and Predictive Biology（巴塞罗那建模与预测生物合作组织）；Univ. Bordeaux（波尔多大学）
Three-dimensional foam flow resolved by fast X-ray tomographic microscopy
CNRS（法国国家科学研究中心）；Institut de Physique de Rennes（雷恩物理研究所）；Institute for Biomedical Engineering, University and ETH Zurich（苏黎世联邦理工学院生物医学工程研究所）；ETH Zurich（苏黎世联邦理工学院）；Swiss Light Source, Paul Scherrer Institute（瑞士光子源，保罗谢尔研究所）；Laboratoire de Physique, ENS Lyon（里昂高等师范学校物理实验室）
