Scalable bottom-up fabrication of colloidal photonic crystals and periodic plasmonic nanostructures

Towards the development of solid-state platform optical sensors: aggregation of gold nanoparticles on polyurethane foam

“…The inability of detection in unclear or colored solutions and instability of some AuNPs in aqueous phase limit time of life of such sensors, whereas changeability of AuNP aggregates makes reevaluation of the analysis difficult. These problems could be overcome using solid-phase sensors [16][17][18][19][20][21][22][23][24].…”

Nanosphere Lithography for Structuring Polycrystalline Diamond Films

“…The self-assembly of PS spheres resulted in a hexagonal close-packed (hcp) array of monolayers ( Figure 1b). It is important to note that multilayers exhibited not only hcp ordering but also metastable square packing ( Figure 1c) [32]. The success of using colloidal crystals as masks for surface patterning is determined by the quality of the prepared mono/multilayer.…”

“…It is possible to use nanospheres with a wide range of sizes (approximately 100 nm to 2 µm), which covers broad waveband (e.g., UV, IR) applications. In this paper, spin-coating was used first as an inherently simple, fast, and repeatable method for producing the mask or colloidal crystals on lab-scale [10,32]. On the other hand, this technique is limited in accuracy and sensitive to the material roughness.…”

Bottom-Up Assembly and Applications of Photonic Materials

“…The colloidal crystal films are usually patchy across the substrate. Nonetheless, Jiang and co-workers have developed a robust, simple, and cost effective spin-coating technology that is scalable and compatible with standard top-down microfabrication [52]. Furthermore, they have also demonstrated the possibility to fabricate non close packed 2D colloidal crystal arrays by spin-coating [34,35].…”