Microcontinuum Theories covers the theory and application of micropolar non-classical continuum mechanics (NCCM), in which microconstituents are non-deformable but capable of rotation.NCCM addresses the deformation of continuous matter where classical continuum mechanics (CCM) theories prove inadequate in describing deformation physics. Examples include primitive lattice structures, bar or plate elements in liquid crystals, blood flow, chopped fibers in composites, materials containing microconstituents, and various synthesized materials, as well as slurry flow. Studying the deformation physics of such materials demands more sophisticated and comprehensive continuum theories than those currently employed in classical continuum mechanics (CCT).This book is designed as a graduate-level textbook for a one-semester course in micropolar microcontinuum mechanics, while also serving as an authoritative reference for physicists and engineers specializing in continuum and applied mechanics.