PATTERNING OF NANOPARTICLE COMPOSITE INCLUDING PLASMON NANOPARTICLES AND HYDROGEL PARTICLES, MANUFACTURING OF PATTERNED NANOSTRUCTURE, AND CONDITIONING OF OPTICAL SIGNALS AND SERS SIGNALS THERETHROUGH

摘要

The present invention relates to a patterned nanostructure which is manufactured by patterning a nanocomposite including plasmon nanoparticles and hydrogel particles on a two-dimensional substrate. More specifically, the present invention relates to a technology of easily conditioning optical signals and surface enhanced Raman scattering (SERS) signals of the nanostructure that is patterned on the two-dimensional substrate by simply controlling the pattern structure of a nanoparticle composite according to an environmental condition (temperature) of an aqueous solution during manufacturing of patterns. The patterned nanostructure comprises: a substrate; and a single layer film of a hydrogel colloid-plasmon nanoparticle composite which is formed on the substrate, wherein the nanoparticle composite is associated with hydrogel colloid in a state that plasmon nanoparticles are attached to the surface of hydrogel colloid by electrostatic attraction, and the nanoparticle composite is reversely contracted or expanded according to temperature variations of the aqueous solution to form nanoparticle composite patterns with various structures on the substrate. The patterned nanostructure can easily control association structure of the plasmon particles, structure of the nanocomposite that forms the patterns, size and gap between composites only through temperature variations of the aqueous solution, and can condition optical signals and SERS signals of the substrate widely and uniformly even on a large area accordingly. Further, the patterned nanostructure not only can be efficiently used in various fields such as a bio industry, an electronic industry, an energy industry and others requiring organic/inorganic patterning techniques, but also can be usefully applied to a plasmon-based sensor field reversibly responding to an external stimulus by controlling sizes, shapes and gaps of the patterns at nano-level according to characteristics of the particles used in the patterns even without complicated processes.;COPYRIGHT KIPO 2017