Results 121 to 130 of about 15,815 (311)

Nanoplasmonic filters for hollow core photonic crystal fibres

open access: yes, 2014
We demonstrate a method to add photonic functionalities to the tip of hollow photonic crystal bres, for ultra-compact and integrated lab-on-bre applications.
Andrea Di Falco   +3 more
core   +1 more source

A novel approach to salinity monitoring using two dimensional hexagonal photonic crystals

open access: yesScientific Reports
We developed a novel structure by constructing a hexagonal cylindrical configuration within a dielectric host, which showcases a substantial band gap. This was achieved using two-dimensional photonic crystals that possess triangular lattice periodicity ...
Hassan Sayed   +4 more
doaj   +1 more source

Propagation of the Ultra-Short Laser Pulses Through the Helical 1D Photonic Crystal Structure with Twist Defect

open access: yesEPJ Web of Conferences, 2016
The presence of the photonic band-gap is a featured property of the cholesteric liquid crystals (CLC). It can be practically realized for almost any reasonable wavelengths with very high degree of tunability.
Antonov Dmitrii V., Iegorov Roman
doaj   +1 more source

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

open access: yesAdvanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long   +26 more
wiley   +1 more source

Three-periodic 1D photonic crystals based on dielectric oxides SiO2, Al2O3, TiO2, ZrO2: an emerging class of structures with wide possibilities for applied photonics

open access: yesКомпьютерная оптика
One-dimensional three-periodic photonic-crystal (PC) structures based on dielectric nonmagnetic materials (SiO2, Al2O3, TiO2, ZrO2) that form [(ab)N(cd)M]K supercells including “internal” subcells of the (ab)N and (cd)M types are considered.
I.S. Panyaev   +3 more
doaj   +1 more source

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora   +17 more
wiley   +1 more source

Tunable ultra-narrow band-gap of anomalous dispersion photonic crystals

open access: yes, 2007
We use the transfer-matrix method to research the band structures in one-dimensional photonic crystals composed of anomalous dispersion material ( saturated atomic cesium vapor). Our calculations show that that type of photonic crystal possesses an ultra-
Chen DF (Chen Dong-Feng)   +5 more
core  

Artificial Intelligence‐Assisted Workflow for Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling

open access: yesAdvanced Materials, EarlyView.
AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll   +19 more
wiley   +1 more source

A photonic band gap in quasicrystal-related structures

open access: yes, 2011
The most interesting phenomena in photonic crystals stipulate the presence of omnidirectional band gap, i.e. overlapping of stop bands in all directions.
Miklyaev Y.V., Dyachenko P.N.
core  

Asymmetric Band Gaps in Amorphous Photonic Materials

open access: yes2018 IEEE Photonics Conference (IPC), 2018
A Monte Carlo method-based design guideline for 2-D amorphous photonic materials are presented. The parameters affecting band gap are analyzed numerically and experimentally for telecommunication wavelengths. Asymmetric nature of band gap is explained in analogy with solid-state electronics.
Sarihan, Murat Can   +5 more
openaire   +2 more sources

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