Red, Green and Blue Reflections Enabled in an Optically Tunable Self-Organized 3D Cubic Nanostructured Thin Film

摘要

Photonic crystals have attracted a great deal of attention in recent years owing to their complex, periodic dielectric nano-structures, which offer unique optical properties and the ability to control the flow of light. Photonic crystals are optical media that contain a periodic distribution of high and low refractive indices in 1, 2, or 3 dimensions. When the periodicity is commensurate to the wavelength of visible light, they exhibit photonic band gaps (PBGs) in this spectral region, where the propagation of light is prohibited within a range of "forbidden" frequencies. These periodic dielectric thin films can be utilized to confine, manipulate, prohibit transmission of, and steer photons, allowing their integration as a foundational element of all-optical integrated circuits. Consequently, many studies have focused on the facile methodologies to easily fabricate photonic crystals in large sizes on various substrates. One of the major challenges is the complex and difficult fabrication process that is scalable to two and three dimensions. Although one-dimensional (1D) and two-dimensional (2D) photonic crystals are already commercially available through limited means, the mass production of three-dimensional (3D) photonic crystals is still a challenge.