Monodisperse microspheres refer to microspheres that have the same composition and shape and relatively uniform particle size.

In recent years, what has attracted more research interest is the use of monodisperse silica spherical particles as raw materials for self-assembly to prepare photonic crystals. The material made of photonic crystal has the characteristics of prohibiting the passage of light waves in a certain frequency band, which is the basis for the preparation of optoelectronic devices with greater integration and faster speed. The preparation of submicron spherical silica particles is the prerequisite for the assembly of three-dimensional photonic crystals.

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