Results 31 to 40 of about 8,515 (264)

Upconversion Luminescence in Barium Titanate Xerogel Doped with Erbium and Ytterbium in Porous Anodic Aluminum Oxide

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2022
In this work, sol-gel synthesis and luminescence properties of erbium and ytterbium doped BaTiO3 (BaTiO3:Er,Yb) in porous anodic alumina are reported. Porous anodic alumina with its well-known tailor-made honeycomb structure was chosen as a template for ...
E. I. Lashkovskaya   +6 more
doaj   +1 more source

Effect of graphene nanoplatelets on the microstructure and mechanical behavior of erbium-modified Al-7.5Si-0.5Mg alloy [PDF]

open access: yesJournal of Particle Science and Technology, 2020
In this study, the effects of adding erbium and graphene (separately and in combination) on the microstructure and mechanical properties of Al-7.5Si-0.5Mg alloy were investigated. Initially, the primary alloy was produced by casting in the form of ingots.
Seyed Masoud Alavi   +2 more
doaj   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

open access: yesAdvanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano   +18 more
wiley   +1 more source

Active Optical Fibers Doped with Ceramic Nanocrystals

open access: yesAdvances in Electrical and Electronic Engineering, 2014
Erbium-doped active optical fiber was successfully prepared by incorporation of ceramic nanocrystals inside a core of optical fiber. Modified chemical vapor deposition was combined with solution-doping approach to preparing preform.
Jan Mrazek   +8 more
doaj   +1 more source

Coupling of Er3+ ions and Plasmonic Modes in Vertical Nanocavities for Spectral Broadening in Telecom Bands

open access: yesAdvanced Materials Technologies, EarlyView.
Left: Illustration of the glass & nanostructures system and the NIR emission at 1.5 µm, where the colored spheres represent the Er3+ ions within the doped glass. Right: Representation of the Stark splitting of the 4I13/2 and 4I15/2 manifolds of the Er3+, illustrating how the plasmonic modes facilitate the emission from the broader Stark manifold ...
Gaston Lozano Calderón   +5 more
wiley   +1 more source

Doping of porous activated carbon with Er, a metal with a high electronic states density

open access: yesФізика і хімія твердого тіла
The effect of doping porous carbon material (PCM) with erbium, as a metal with a high density of electronic states, on the electrochemical properties of PCM was investigated.
I.M. Budzuliak   +6 more
doaj   +1 more source

Bridging Boltzmann and Non‐Boltzmann Optical Thermometry Enabled by Multimodal Perovskite Nanocrystals

open access: yesAdvanced Optical Materials, EarlyView.
Multimodal perovskite nanocrystals enable optical thermometry across multiple excitation and emission regimes, spanning the UV–Vis–NIR spectral range. By combining upconversion, downshifting, and persistent luminescence, the platform bridges conventional Boltzmann and non‐Boltzmann thermometric approaches.
Adrian Drozdowski   +2 more
wiley   +1 more source

Open Cavity Hybrid Raman-Erbium Random Fiber Laser With Common Pump

open access: yesIEEE Access, 2019
A symmetrical 80-km open cavity erbium-integrated hybrid random distributed feedback fiber laser (HRFL) was proposed and experimentally demonstrated. A variation of pumping schemes and cavity lengths was first investigated prior to the integration of the
N. H. Zainol Abidin   +5 more
doaj   +1 more source

Bayesian‐Optimized Dual‐Mode Luminescence‐Based Optical Thermometry Enabled by Negative Thermal Expansion in Lu2(MoO4)3:Yb–Er–Tm Phosphor

open access: yesAdvanced Optical Materials, EarlyView.
A Bayesian optimization framework identifies the ideal composition for Lu2(MoO4)3:Yb–Er–Tm phosphors with minimal experimental trials. By leveraging the host's negative thermal expansion, the material achieves remarkable thermal quenching compensation.
Reiko Furukawa   +7 more
wiley   +1 more source

The Construction of an Artificial Intelligence Model for the Intelligent Design of Ring Erbium-Doped Fiber Lasers

open access: yesIEEE Photonics Journal
Erbium-doped fiber laser serves as a crucial cornerstone in the development of optical communications while its performance design primarily relies on inefficient manual adjustments.
Lan Luo   +4 more
doaj   +1 more source

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