Among the most promising techniques to handle small objects at the micrometer scale are those that employ electrical forces which have the advantages of voltage-based control and dominance over other forces. The book provides a state-of-the-art knowledge on both theoretical and applied aspects of the electrical manipulation of colloidal particles and fluids in microsystems and covers the following topics: dielectrophoresis electrowetting electrohydrodynamics in microsystems and electrokinetics of fluids and particles. The book is addressed to doctoral students young or senior researchers chemical engineers and/or biotechnologists with an interest in microfluidics lab-on-chip or MEMS.