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Surface patterning includes techniques for preparing and patterning surfaces, from the arrangement of single molecules to the macro-scale, for example, through etching, electrochemical patterning and film deposition.
Photonic metasurfaces can be used to control the polarization, phase and amplitude of light. Nonlinear metasurfaces enable giant nonlinear optical chirality, realization of the geometric Berry phase, wavefront engineering, and optical switching and modulation, and hold potential for on-chip applications.