Stimuli-responsive meta-holographic device and hologram generating device including same

A stimuli-responsive meta-holographic device comprising:

• a metasurface layer provided with a plurality of nanostructures;
• and
• a liquid crystal layer provided on one side of the metasurface layer and including a plurality of unit liquid crystal molecules of which arrangement is changed by an external stimulus;
• wherein, when light is incident on the liquid crystal layer, the liquid crystal layer reflects light of a specific wavelength region to the metasurface layer according to a degree of the external stimulus applied thereon, and
• the plurality of unit liquid crystal molecules are arranged to have a specific cone angle with respect to a twisting axis to form a twisted-type liquid crystal composite.