منابع مشابه
Self-alignment of liquid crystals in three-dimensional photonic crystals.
We report on the observation of self-alignment of nematic liquid crystals into colloidal photonic crystals, over distances much larger than the typical size of the voids between the spheres. We observe that the infiltrated structure possesses a unique optical axis that is determined by an intrinsic structural anisotropy of photonic crystal opals. We develop a simple model to describe this self-...
متن کاملSelf-action of Light in Photonic Crystals
We present the results of z-scan studies carried out on photonic crystals and microcavities made of Bi:YIG, showing the enhancement of light self-action in the vicinity of the microcavity mode and the wavelength-dependent intensity localization in certain type layers at the longwavelength edge of the photonic bandgap.
متن کاملPattern Definition in Self-assembled Photonic Crystals
Introduction Colloidal self-assembly has been widely explored as a route to photonic materials. Theoretical work has demonstrated that a three dimensional photonic band gap can be generated from an inverse FCC structure if fairly rigorous dielectric contrast conditions are met. It is because of this finding that a multitude of research groups are investigating the self-assembly of colloidal par...
متن کاملSelf-Collimation in Planar Photonic Crystals
We analyze, in three dimensions, the dispersion properties of dielectric slabs perforated with two-dimensional photonic crystals (PCs) of square symmetry. The band diagrams are calculated for all -vectors in the first Brillouin zone, and not only along the characteristic high-symmetry directions. We have analyzed the equal-frequency contours of the first two bands, and we found that the square ...
متن کاملSelf-accelerating beams in photonic crystals.
We find accelerating beams in a general periodic optical system, such as photonic crystal slabs, honeycomb lattices, and various metamaterials. These beams retain a shape-preserving profile while bending to highly non-paraxial angles along a circular-like trajectory. The properties of such beams depend on the crystal lattice structure: on a small-scale, the fine features of the beams profile ar...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Aspects in Mining & Mineral Science
سال: 2020
ISSN: 2578-0255
DOI: 10.31031/amms.2020.05.000620