Self-Assembly Patterning of Silica Colloidal Crystals

Abstract

We developed a self-assembly process of silica particles to fabricate desired patterns of colloidal crystals having high feature edge acuity and high regularity. A micropattern of colloidal methanol prepared on a self-assembled monolayer in hexane was used as a mold for particle patterning, and slow dissolution of methanol into hexane caused shrinkage of molds to form micropatterns of close-packed SiO2 particle assemblies. This result is a step toward the realization of nano/micro periodic structures for next-generation photonic devices by a self-assembly process.

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

“…4(b-g)) comprising ceramic coating layers with various coating weight gains. The overall morphology of the SiO 2 coating layers is similar to the nanoparticle arrangement driven by self-assembly (the spontaneous organization of materials through noncovalent interactions with no external intervention [50]), as was reported by Masuda et al [51,52]. The morphology of the separator with the highest amount of coating (Fig.…”

Self-assembly Patterning of Nano/Micro-Particles [Translated]^†

“…The regularity and feature edge acuity of periodic structures should also be improved in order to enhance the performance. Nano/micro periodic structures can be prepared with short fabrication time and low energy by selfassembly of mono-dispersed par ticles in which particles and air (wall and air for inverse opal) are arranged periodically 14,15) . Self-assembly and patterning of nano/micro particles have attracted much attention recently 1,2,16,17) .…”

Self-assembly and Patterning of Nanocrystals

“…3.1 Self-assembly patterning of colloidal crystals by two-solution method 27 Desired patterns of colloidal crystals having high feature edge acuity and high regularity were fabricated by two-solution method 27 . A micropattern of colloidal methanol prepared on a self-assembled monolayer in hexane was used as a mold for particle patterning, and slow dissolution of methanol into hexane caused shrinkage of molds to form micropatterns of close-packed SiO 2 particle assemblies.…”

“…Reprinted with permission from Ref. 27 , Masuda, Y., Itoh, T. and Koumoto, K., 2005, Langmuir, 21, 4478. Copyright @ American Chemical Society was a double particle-layer of close-packed hexagonal lattice, i.e., the arrangement of fcc{111}, and the outer shell of the circle was a single particle-layer of hexagonal lattice (fcc{111}).…”