Results 21 to 30 of about 2,648,113 (296)

Tunability and enlargement of omnidirectional transmission frequency range in a photonic heterostructure containing Dirac semimetal

open access: yesAIP Advances, 2018
In this study, We theoretically realized the enlargement of the photonic crystal band gap by a photonic heterostructure containing Dirac semimetal layer. At the same time, since the dielectric constant of the Dirac semimetal changes with its Fermi level,
Yunkun Zhao   +3 more
doaj   +1 more source

Metamaterial Control of Hybrid Multifunctional High-Tc Superconducting Photonic Crystals for 1D Quasi-periodic Structure Potential Applications [PDF]

open access: yesMaterials Research
In the present work, electromagnetic wave properties of the Fibonacci one-dimention photonic crystal (1DPC) structure consisting of double negative materials incorporated high Tc superconductor are theoretically investigated.
Arafa H Aly, Doaa Mohamed, M A Mohaseb
doaj   +2 more sources

Emergence and control of photonic band structure in stacked OLED microcavities

open access: yesNature Communications, 2021
Understanding and manipulating the photonic band structure formed in stacked Fabry-Pérot microcavity organic light-emitting diodes (OLEDs) is key to optimizing their performance. Here, through intelligent device design, the authors tune the photonic band
David Allemeier   +5 more
doaj   +1 more source

Photonic band gap fiber accelerator

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2001
There are three requirements in making a traveling wave accelerator: longitudinal electric field, synchronization, and confinement. We present and analyze a conceptually new kind of charged particle accelerator, making use of a photonic band gap lattice ...
Xintian Eddie Lin
doaj   +1 more source

Hollow core photonic bandgap fibers for telecommunications: opportunities and potential issues [PDF]

open access: yes, 2012
We discuss the potential advantages that hollow core photonic bandgap fibers may ultimately have over conventional all solid fibers and review the state-of-the-art, fundamental physical limits and the many technological challenges to be ...
Petrovich, M.N.   +6 more
core   +2 more sources

Band gap engineering in simultaneous phononic and photonic crystal slabs [PDF]

open access: yes, 2010
We discuss the simultaneous existence of phononic and photonic band gaps in two types of phononic crystals slabs, namely periodic arrays of nanoholes in a Si membrane and of Si nanodots on a SiO2 membrane. In the former geometry, we investigate in detail
Pennec, Yan   +15 more
core   +1 more source

Investigating the Properties of an Optical Waveguide Based on Photonic Crystal with Point Defect and Lattice Constant Perturbation [PDF]

open access: yesJournal of Optoelectronical Nanostructures, 2016
In this paper, a photonic crystal waveguide with point defects and lattice constant perturbations of +5%, -5% are being investigated. Firstly waveguide structures with constant and specific parameters are being studied and photonic band gap diagrams for ...
Khojasteh Zarei   +2 more
doaj  

Experimental probe of a complete 3D photonic band gap [PDF]

open access: yes, 2020
The identification of a complete three-dimensional (3D) photonic band gap in real crystals typically employs theoretical or numerical models that invoke idealized crystal structures.
Grishina, Diana A.   +6 more
core   +2 more sources

Design and characterisation of photonic quasicrystals from microwave to optical regime [PDF]

open access: yes, 2010
Photonic band-gap materials are artificially periodic engineered materials with which we can control and manipulate the electromagnetic radiation. The period photonic crystals are well known and have been studied for the last two decades.
Thankamani, Priya Rose
core   +1 more source

Tunable photonic crystal filter for terahertz frequency applications [PDF]

open access: yes, 2003
In this Paper we investigate a tunable metallic photonic crystal filter with a novel mechanical tuning method, suitable for use in terahertz frequency applications.
Blaikie, R.J.   +5 more
core   +1 more source

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