2 Two dimensional hybrid nanopatternd structures through spontaneous self-assembly of plasmonic nanoparticles on a hydrogel colloidal crystal monolayer

摘要

The present invention relates to a two dimensional (2D) hybrid nanopattern structure which is plasmonic nanoparticle adsorbed on a hydrogel colloidal crystal monolayer formed on a substrate through self-assembly. According to the present invention, the temperature of a nanoparticle dispersion solution is adjusted over or below a transition temperature of a hydrogel colloidal particle, or a surface composition of the plasmonic nanoparticle is adjusted when the plasmonic nanoparticle is assembled on the hydrogel colloidal crystal monolayer, a shape of a partition is adjusted. According to the present invention, through temperature control of a plasmonic nanoparticle dispersion solution assembled on the hydrogel colloidal crystal monolayer, a shape of a pattern formed on the substrate is adjusted, and an assembly structure, distance, and density among a plurality of plasmonic nanoparticles attached to the outer surface of the hydrogel colloidal particle are controlled. Accordingly, an optical signal of the substrate is widely and uniformly adjusted in a large area. Moreover, the size and the shape of the pattern are controlled in a nano-level without a complex process, thereby the nanostructure is able to be efficiently utilized in various fields, such as bio, electronic, and energy industries, and the like, requiring an organic/inorganic pattern technology without technical and mechanical restrictions, and is able to be usefully applied to plasmon-based sensor, solar cell, and display device fields capable of reversibly responding to external stimulus.