Abstract: Embodiments of the present disclosure relate to a metrology method and system for critical dimensions based on a dispersion relation in momentum space.

Abstract: The present disclosure relates to a method for preparing a colorant having a target color and the colorant. The method includes configuring submicron particles prepared from a predetermined material to have a predetermined size; adjusting a ratio of the submicron particles to cuttlefish juice submicron particles to a predetermined ratio; evaporating a predetermined solution mixed with the submicron particles and the cuttlefish juice submicron particles to obtain an amorphous photonic crystal structure; acquiring spectral data for reflected light generated by incident light irradiating the amorphous photonic crystal structure; determining whether the spectral data meets a predetermined condition, wherein the predetermined condition is associated with the target color; and responsive to determining that the spectral data does not meet the predetermined condition, adjusting at least one of the ratio or a size of each of the submicron particles until the spectral data meets the predetermined condition.