Method for constructing non-close packing colloid balls ordered arrangement using soft-graving technology

TLDR: In this article, a soft etching process was proposed to constitute ordered arrangement of colloid balls in non-compact accumulation, and the process includes five steps of: preparing ordered colloid crystal, preparing and separating PDMS template, soft-etching to transfer the 2D colloid data to the PDMS, preparing substrate with PVA film, and forming ordered arrangement.

Abstract: The present invention relates to soft etching process to constitute ordered arrangement of colloid balls in non-compact accumulation, and is especially soft etching process for precise control of interval and lattice structure of colloid balls. The process includes five steps of: preparing ordered colloid crystal, preparing and separating PDMS template, soft etching to transfer the 2D colloid crystal to the PDMS template, preparing substrate with PVA film, and forming ordered arrangement of colloid balls in non-compact accumulation. Swelling PDMS template with colloid balls in mixed toluene/acetone solution can form 2D hexagonal non-compact colloid ball arrangement and 2D non-hexagonal colloid ball arrangement with flat surface or patterned surface on the substrate with PVA film. The present invention has attractive application foreground in optics, photonics, sensor, surface micro structure and other fields.