Results 51 to 60 of about 190,146 (342)

Pneumatic photonic crystals

open access: yesOptics Express, 2010
We theoretically study a 1D elastic photonic crystal containing air voids as an opto-pneumatic medium. This medium is sensitive to weak deviations of the external pressure and, owing to its elasticity, can vary its geometry depending on the external conditions.
openaire   +2 more sources

Higher-order modes excitation in generator with photonic crystal

open access: yesResults in Physics, 2019
We revealed physical processes responsible for the excitation of higher-order modes in volume free-electron laser with photonic crystal. We discovered the new approach for the selection of the electromagnetic modes in volume free-electron laser with ...
Artem A. Badarin   +5 more
doaj   +1 more source

Optical Kossel Lines and Fluorescence in Photonic Liquid Crystals

open access: yesCrystals, 2020
We propose a general analytical way to describe the fluorescence peculiarities in photonic liquid crystals (revealing themselves as an optical analog of the X-ray Kossel lines in conventional crystals) based at the localized optical edge modes existing ...
Vladimir A. Belyakov
doaj   +1 more source

Dispersion management in nonlinear photonic crystal fibres with nanostructured core [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2011
The subwavelength structure of the core of a photonic crystal fibre can modify its dispersion characteristic and significantly shift the zero dispersion wavelength.
Buczynski Ryszard   +8 more
doaj   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

open access: yesAdvanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger   +11 more
wiley   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Dual index properties of photonic crystal and its application in subwavelength focusing

open access: yesMaterials Research Express, 2021
Based on the two-dimensional dielectric wedge-shaped photonic crystal, we studied the existence of two kinds of equivalent refractive indexes (negative refractive index is −1, positive refractive index is 1.897) in the photonic crystal by means of fast ...
Bingming Liang   +4 more
doaj   +1 more source

Photonic Crystals based Biosensors in Various Biomolecules Applications

open access: yesPhysics Communication, 2023
Over the past decades, photonic crystals have emerged as interesting photonic structures. It plays a vital role in many fields of optical communication, biomedical sensing, and other applications due to its compactness, high sensitivity, high selectivity,
Eunike Friska Defvi, Lita Rahmasari
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Photonic crystal chips for optical interconnects and quantum information processing [PDF]

open access: yes, 2008
We have recently demonstrated a number of functional photonic crystals devices and circuits, including an ultrafast, room temperature, low threshold, nanocavity laser with the direct modulation speed approaching 1 THz, an all-optical switch controlled ...
Altug, Hatice   +5 more
core   +1 more source

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