This comprehensive compendium presents the physics of electrokinetics in a rigorous and systematic manner, bridging the gap between fundamental electro-hydrodynamic theory and high-efficiency engineering applications. The underlying physical principles of ion transport and electrostatics to the development of sophisticated analytical frameworks for electroosmotic flow in complex, real-world geometries, are succinctly highlighted.The text covers essential themes including the Poisson-Boltzmann equation, Gouy-Chapman structures, and the impact of axial inhomogeneities on transport efficiency. The wide range of applications focus on the predictive modeling of anomalous dispersion, wall adsorption, and electrophoretic separations.This essential reference text benefits professionals, researchers, academics, postgraduate and graduate students in the fields of mechanical engineering, chemical engineering, bioengineering, applied physics, and nanotechnology.