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Showing 1 to 13 of 13 for “"Dielectric Structure"”.
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Exact Solutions of Planar Photonic Crystal Waveguides with Infinite Claddings
… is carried out. These waveguides consist of a dielectric layer sandwiched between two semiinfinite periodic dielectric structures. Using a novel approach, exact analytical solutions for guided modes in such waveguides are presented. The se rigorous solutions allow one to distinguish clearly …
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Photonic crystals : from theory to practice
… of photonic crystals, with a special emphasis on structures and devices that make a connection with practically realizable systems. First, we analyze the properties of photonic-crystal slabs: 2d periodic dielectric structures that have a band gap for propagation in a plane and that use …
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Exploring for new photonic band gap structures
In the infinite set of possible photonic band gap structures there are no simple rules to serve as a guide in the search for optimal designs. The existence and characteristics of photonic band gaps depend on such factors as dielectric contrast, volume fraction, symmetry and connectivity of the …
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Novel photonic phenomena in nanostructured material systems with applications and mid-range efficient insensitive wireless energy-transfer
… the nanoscale is provided. In the class of all-dielectric material systems, techniques for the suppression of radiative loss from incomplete-photonic-bandgap structures are developed: the cancellation of radiation channeled into discrete modes of the substrate, for resonant small-modal-volume …
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Probing ultra-subwavelength inhomogeneities embedded within dielectric targets using photonic nanojets
… ultra-subwavelength features embedded within structures is a hot topic for a broad diversity of applications like spectroscopy, nanotechnology, microscopy, and optical data storage discs. Conventional objective lens based optical systems have a fundamental limit on the best possible resolution …
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Modeling of diffusional creep and stress relaxation in copper grains during manufacturing of microelectronic integrated circuits
… need to study nanoscale back-end interconnect structures of microelectronic circuits. These structures have the length scale that does not conform to the assumptions of classical dimensional theories of diffusional creep.</p><p>Both diffusion and elasticity governing equations are considered in …
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Titanium dioxide dielectric layers made by anodization of titanium: the effect of dissolved nitrogen and oxygen
This work investigates improving the dielectric structure and properties of TiO2formed by anodization of nitrogen-and-oxygen-infused Ti substrates for electrolyticcapacitors. The controllable parameters of the diffusion process and the anodizationwere studied to evaluate the effect of nitrogen and …
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Experimental studies of hybrid photonic band gap accelerator structures
… of a hybrid photonic band gap (PBG) accelerator structure. PBG structures can support a single electromagnetic mode, thus damping higher-order modes (HOMs) generated by wakefields. We have designed, built and successfully tested a 17.14 GHz hybrid PBG (HPBG) structure containing both dielectric …
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Study of Si/SiO2 interface passivation and SiO2 reliability on deuterium implanted silicon
… is not very effective for a multi-level metal-dielectric structure. This work investigates and optimizes incorporation of deuterium by ion implantation into the silicon substrate before the growth of 6.5 nm thin oxides. Different implantation conditions were used for optimization of passivation …
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Nanophotonics for dark materials, filters, and optical magnetism
<p>Research on nanophotonic structures for three application areas is described, a near perfect optical absorber based on a graphene/dielectric stack, an ultraviolet bandpass filter formed with an aluminum/dielectric stack, and structures exhibiting homogenizable magnetic properties at infrared …
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Electroforming and electron emission in metal-borosilicate glass-metal structures
… (borosilicate) films in the form of sandwich structures of M-SiO B203 –M (diode) and M-SiOx/B2O3-N-SiOx/B2O3-M (triode) have been studied. Diode and triode systems show electroforming effects and subsequently electron emission, voltage-controlled negative resistance, electroluminescence, and …
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New inverse opal hydrogels as platform for detecting macromolecules
… of complex equipment. Due to their periodical dielectric structure, PhCs prevent the propagation of specific wavelengths. A change of the periodicity parameters is thus indicated by a change in the reflected wavelengths. In the case explored, the PhC sensors are implemented as periodically …
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Low Profile, Printed Circuit, Dual-Band, Dual-Polarized Antenna Elements and Arrays
… to introduce two, near-degenerate modes in the structure that – when excited in phase quadrature – combine to form circular polarization. The perturbations allow circular polarized operation with only a single feed point. The sense of the circular polarization is determined by the location of …