Method of forming single-layer photonic crystal structure

A method of forming a single-layer photonic crystal structure, comprising the following steps of:

• (1) depositing electrophoretic suspension, a working electrode and a lower electrode in a container, wherein the working electrode and the lower electrode are respectively formed on an upper part and a lower part of the container, and spaced apart from each other at a distance;
• and
• (2) applying an electric voltage to the working electrode and the lower electrode to form an electric field, such that particles in the electrophoretic suspension form the single-layer photonic crystal structure on the working electrode under interactive actions of the electric field and a gravity field by an electrophoresis self-assembly technique,
• wherein step (1) further comprises disposing between the working electrode and the lower electrode a template having apertures, and step (2) further comprises rendering the particles to penetrate the apertures of the template under the interactive actions of the electric field and the gravity field, to form the single-layer photonic crystal structure on a certain portion of the working electrode.