Metamaterial is engineered material with exotic properties not found in nature. We develop smart manufacturing of metamaterials for various applications. We have invented a series of optothermal tools, including opto-thermoelectric tweezers and bubble printing, for digital assembly of colloidal metamaterials. Roll-to-roll processing is developed for the large-scale manufacturing of moire metamaterials. Inline metrology is applied to measure structures, dynamics and properties of metamaterials. We further couple metamaterials with functional molecules, quantum dots and atomic-thin materials for quantum physics and devices.