Abstract: Metamaterials are man-made materials or structures whose internal constituents and topologies allow them to have unusual emergent properties which are not available among the conventional materials. Initially proposal of metamaterial started on the 2D negative-indexed electromagnetic metamaterials followed by the 3D metamaterials in the fields of optical, acoustic, mechanical engineering in last 100 years. The current research trend on metamaterial has entered a stage to incorporate the programmability where the properties can be adjustable through selection of design parameters, and tuneability, an ability for the material's properties to be tuned through deformation controlled by the embedded actuation or external stimuli. This brief review focuses on the state-of-art research, major challenge and future development about the design, functionality, manufacture of the metamaterials with large deformation, which hopefully could be able to provide an inspiring reference for programmability and tuneability of new generation metamaterials.

Key words: metamaterials, meta-structures, programmability, tuneability, large deformation, mechanical kinematics