Results 11 to 20 of about 32,180 (314)

Synthesis and properties of SiO2 photonic crystals modified by DNA

open access: yesБіофізичний вісник, 2020
Background: Photonic crystals are structures characterized by periodic modulations of the refractive index with a period commensurate with the wavelength.
M. Olenchuk   +4 more
doaj   +1 more source

Holographic Fabrication of 3D Moiré Photonic Crystals Using Circularly Polarized Laser Beams and a Spatial Light Modulator

open access: yesMicromachines, 2023
A moiré photonic crystal is an optical analog of twisted graphene. A 3D moiré photonic crystal is a new nano-/microstructure that is distinguished from bilayer twisted photonic crystals.
Noah Hurley   +3 more
doaj   +1 more source

Study of laser actions by bird’s feathers with photonic crystals

open access: yesScientific Reports, 2021
Random lasers had been made by some biomaterials as light scattering materials, but natural photonic crystals have been rarely reported as scattering materials.
Shih-Wen Chen   +6 more
doaj   +1 more source

Photonic Band Gaps and Resonance Modes in 2D Twisted Moiré Photonic Crystal

open access: yesPhotonics, 2021
The study of twisted bilayer 2D materials has revealed many interesting physics properties. A twisted moiré photonic crystal is an optical analog of twisted bilayer 2D materials. The optical properties in twisted photonic crystals have not yet been fully
Khadijah Alnasser   +4 more
doaj   +1 more source

Research and Application Progress of Inverse Opal Photonic Crystals in Photocatalysis

open access: yesInorganics, 2023
In order to solve the problem of low photocatalytic efficiency in photocatalytic products, researchers proposed a method to use inverse opal photonic crystal structure in photocatalytic materials.
Hongming Xiang   +4 more
doaj   +1 more source

Inorganic scintillator surface enhancements with 2-D photonic crystals to improve light collection [PDF]

open access: yesEPJ Web of Conferences, 2023
Inorganic scintillators are widely used in various applications of gamma spectroscopy such as nuclear nonproliferation and safeguards, medical applications, space applications, and astronomy.
Surani Stuti   +4 more
doaj   +1 more source

Photonic crystal spectrometer

open access: yesOptics Express, 2010
9 pages, 6 figures; discussion of light extraction and more experimental details ...
Pervez, Nadia K.   +5 more
openaire   +3 more sources

Spatiotemporal Photonic Crystals

open access: yesConference on Lasers and Electro-Optics, 2020
We study photonic systems periodic in both time and space - spatiotemporal photonic crystals, and find that their bandstructure contains both frequency and momentum bandgaps. When the two types of bandgaps coincide, anomalous bandstructure is observed.
Yonatan Sharabi   +4 more
openaire   +1 more source

Function photonic crystals [PDF]

open access: yesPhysica E: Low-dimensional Systems and Nanostructures, 2011
In the paper, we present a new kind of function photonic crystals, which refractive index is a function of space position. Unlike conventional PCs, which structure grow from two materials, A and B, with different dielectric constants $ε_{A}$ and $ε_{B}$.
Wu, Xiang-Yao   +7 more
openaire   +2 more sources

The diversity of three-dimensional photonic crystals

open access: yesNature Communications, 2021
Photonic crystals have a range of desirable properties for manipulating light. Here, the authors calculate and use the photonic band gap for thousands of such crystals to examine heuristics for their design and predict new photonic crystal structures.
Rose K. Cersonsky   +3 more
doaj   +1 more source

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