Liquid Crystal Elastomers Under Confinement: A Review of Template‐Based Fabrication and Applications

Template‐assisted confinement has emerged as a versatile strategy for controlling the structure and function of liquid crystal elastomers (LCEs). By guiding mesogen alignment and polymer network formation within predefined geometries, these approaches enable LCEs with programmable actuation, optical properties, and mechanical responses. This review provides a comprehensive overview of templating methods for LCE fabrication, including planar substrates, porous scaffolds, droplet‐based confinement, colloidal assemblies, microstructured molds, fibrous templates, and direct ink writing. For each category, how the geometry, surface properties, and processing conditions influence alignment quality and material performance is highlighted. The unique capabilities and challenges associated with each method are also discussed. Finally, emerging directions such as hierarchical and reconfigurable templates, multifunctional composites, and applications in soft robotics, adaptive optics, and biomimetic systems are outlined. Overall, these insights highlight the growing potential of confinement‐guided approaches in advancing the next generation of responsive LCE materials.