Self-assembled colloidal photonic crystals: light channels in cracks

Size-dependent electrocatalytic reduction of nitrite at nanostructured films of hollow polyaniline spheres and polyaniline–polystyrene core–shells

“…2). Creation of this type of hollow sphere structure has been reported in earlier work [41]. These hollow films are more rigid when based on a 50 nm PS template and retain the rough structure of the composite film.…”

A simple self-assembly method for colloidal photonic crystals with a large area

“…The film usually has many defects such as cavities, cracks, and contact lines. The surface topology and the number of layers of the PC assemblies are difficult to control by this method [31]. Another major limitation of these existing methods is incapability of producing large, flat 3D PC films.…”

Spherical Colloidal Photonic Crystals with Selected Lattice Plane Exposure and Enhanced Color Saturation for Dynamic Optical Displays

“…To further understand this, the reflectance spectra of the spherical CPCs immersing in different solvents were investigated. Theoretically, the peak wavelength, denoted as λ for the (111) plane, is determined by Bragg’s law where L is the diffraction order, D (111) is the layer spacing for the (111) plane, ε eff is the volume average of refractive indices, and θ is the incident angle. Herein, the ε eff can be calculated by where n p and n m represent the refractive indices of the SiO 2 particles and interparticle filling medium, respectively; φ is the volume fraction of silica particles and is 0.74 for close-packed face-centered cubic colloidal CPCs.…”