How do charged particles interact in colloidal systems? This review provides a comprehensive overview of recent advances in understanding the effective interaction between charge-stabilized colloids, both in bulk and confined geometries. The paper assesses theoretical frameworks, experimental findings, and ambiguities in defining the effective charge of colloidal particles. It addresses the often-overlooked role of discrete solvent effects, providing a more nuanced perspective on these complex interactions. By synthesizing recent research, the review highlights unresolved issues and future research directions in this field. This review serves as a valuable resource for researchers seeking a deeper understanding of electric double layers and colloidal interactions. Its exploration of theoretical ambiguities and discrete solvent effects provides a framework for future investigations in this area.
Published in the Annual Review of Physical Chemistry, this paper aligns with the journal’s scope by providing a comprehensive overview of a complex topic in physical chemistry. By summarizing recent theoretical and experimental advancements related to electric double layers, the review offers valuable context and insights to researchers in the field, contributing to the advancement of physical chemistry knowledge.