Journal ArticleDOI
Optical study of the pseudogap in thickness and orientation controlled artificial opals
TLDR
In this paper, the formation of the pseudogap in a polystyrene crystal is studied by means of reflectivity and transmission spectra, and a characterization of the photonic band structure in the hexagonal facet of the Brillouin zone is made using angle resolved reflectivity measurements.Abstract:
Artificial opals consisting of polystyrene spheres ordered into a fcc lattice are grown with control over the orientation and thickness. A thorough study of the formation of the pseudogap in these structures is carried out by means of reflectivity and transmission spectra. Special attention is paid to discriminating those features inherent to the photonic crystal, and those to the substrate on which the crystal is grown. Further, a characterization of the photonic band structure in the hexagonal facet of the Brillouin zone is made using angle resolved reflectivity measurements.read more
Citations
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Journal ArticleDOI
Self-assembled photonic structures.
Juan F. Galisteo-López,Marta Ibisate,Riccardo Sapienza,Luis S. Froufe-Pérez,Alvaro Blanco,Cefe López +5 more
TL;DR: In this review a panorama is presented of the state of the art in this field with the view to serve a broad community concerned with materials aspects of photonic structures and more so those interested in self-assembly.
Journal ArticleDOI
Photonic Glass: A Novel Random Material for Light**
TL;DR: In this article, the authors describe two different approaches to grow completely random distributions of monodisperse polymeric spheres with diameters from 200 nm to 2300 nm, which can be used to build up cavities, waveguides etc.
Journal ArticleDOI
Directional fluorescence spectra of laser dye in opal and inverse opal photonic crystals.
TL;DR: The fluorescence from R6G dye molecules embedded in fcc photonic crystals with a large range of lattice parameters is investigated, and complex multiple-Bragg features that correlate favorably with reflectivity peaks are observed.
Journal ArticleDOI
Photonic crystal-assisted visible light activated TiO2 photocatalysis
TL;DR: In this paper, the latest advances in the development of photonic crystal photocatalysts are highlighted, targeting primarily on the design, fabrication, structure-activity and performance evaluation of visible light activated (VLA) TiO2 inverse opals in the degradation of water and air pollutants as well as water splitting.
Journal ArticleDOI
Full color tunable photonic crystal from crystalline colloidal arrays with an engineered photonic stop-band.
Moon Gyu Han,Chang Gyun Shin,Seog-Jin Jeon,Hong-shik Shim,Chul-Joon Heo,Haishun Jin,Jung Woo Kim,Sang Yoon Lee +7 more
TL;DR: An electrically tunable photonic crystal is developed utilizing crystalline colloidal arrays of high refractive index particles and full color modulation with high optical quality is achieved, which paves a way to develop a novel reflective display.
References
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Journal ArticleDOI
Inhibited Spontaneous Emission in Solid-State Physics and Electronics
TL;DR: If a three-dimensionally periodic dielectric structure has an electromagnetic band gap which overlaps the electronic band edge, then spontaneous emission can be rigorously forbidden.
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Strong localization of photons in certain disordered dielectric superlattices
TL;DR: A new mechanism for strong Anderson localization of photons in carefully prepared disordered dielectric superlattices with an everywhere real positive dielectrics constant is described.
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Two-Dimensional Photonic Band-Gap Defect Mode Laser
TL;DR: A laser cavity formed from a single defect in a two-dimensional photonic crystal is demonstrated and pulsed lasing action has been observed at a wavelength of 1.5 micrometers from optically pumped devices with a substrate temperature of 143 kelvin.
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Single-Crystal Colloidal Multilayers of Controlled Thickness
TL;DR: In this article, the spontaneous crystallization of monodisperse silica spheres into close-packed arrays is exploited for optical characterization of planar materials with diffractive optical properties.
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Theory of light propagation in strongly modulated photonic crystals: Refractionlike behavior in the vicinity of the photonic band gap
TL;DR: In this article, the authors demonstrate that light propagation in strongly modulated two-dimensional (2D)/3D photonic crystals becomes refractionlike in the vicinity of the photonic bandgap.