Results 21 to 30 of about 8,515 (264)

Excitation back transfer in a statistical model for upconversion in Er-doped fibres [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2007
We report a new analytical method to evaluate the accuracy of a statistical model of the migration assisted upconversion in Er-doped fibres. Unlike the mean-field approach to the excitation back transfer which was used in a previous statistical model, we
Sergeyev Sergey, Popov Sergei
doaj   +1 more source

Erbium-Doped GQD-Embedded Coffee-Ground-Derived Porous Biochar for Highly Efficient Asymmetric Supercapacitor

open access: yesNanomaterials, 2022
A nanocomposite with erbium-doped graphene quantum dots embedded in highly porous coffee-ground-derived biochar (Er-GQD/HPB) was synthesized as a promising electrode material for a highly efficient supercapacitor.
Thi Ai Ngoc Bui   +3 more
doaj   +1 more source

Microstructure change and deuterium permeation behavior of ceramic-metal multi-layer coatings after immersion in liquid lithium-lead alloy

open access: yesNuclear Materials and Energy, 2018
For the establishment of liquid tritium breeding concepts, static lithium-lead corrosion tests for single-layer erbium oxide coatings and erbium oxide-metal multi-layer coatings were carried out, followed by deuterium permeation measurements.
Seira Horikoshi   +6 more
doaj   +1 more source

The effect of root end cavity preparation using Er,Cr:YSGG laser, ultrasonic retrotip, and bur on the apical microleakage of retrograde cavity filled with MTA Plus

open access: yesJournal of Pharmacy and Bioallied Sciences, 2020
Aim: The sealing ability of the retrograde material is greatly affected by the technique used for root end preparation. Advances in retrograde preparation techniques such as lasers has shown to provide an efficient outcome.
Premjith   +5 more
doaj   +1 more source

Cost-Effective Fabrication of Fractal Silicon Nanowire Arrays

open access: yesNanomaterials, 2021
Silicon nanowires (Si NWs) emerged in several application fields as a strategic element to surpass the bulk limits with a flat compatible architecture.
Antonio Alessio Leonardi   +6 more
doaj   +1 more source

High Temperature Behavior of Al-7Si-0.4Mg Alloy with Er and Zr Additions

open access: yesMetals, 2021
In recent years, many efforts have been devoted to the development of innovative Al-based casting alloys with improved high temperature strength. Research is often oriented to the investigation of the effects of minor element additions to widely diffused
Elisabetta Gariboldi   +2 more
doaj   +1 more source

Erbium-Excess Gallium Garnets

open access: yesInorganic Chemistry, 2023
A series of garnets of formula Er3+xGa5-xO12 is described, for which we report the crystal structures for both polycrystalline and single-crystal samples. The x limit in the garnet phase is between 0.5 and 0.6 under our conditions, with the Er fully occupying the normal garnet site plus half-occupying the octahedral site at x = 0.5 in place of the Ga ...
Chen Yang   +7 more
openaire   +3 more sources

Microstructure-Property Relationships in an Erbium-Modified Al-Si-Mg Alloy

open access: yesIranian Journal of Materials Science and Engineering, 2020
The effects of erbium (Er) addition at various weight percentages (0-0.6 wt.% at an interval of 0.2) on the microstructural characteristics, tensile response and wear properties of as-cast Al-7.5Si-0.5Mg alloy were evaluated.
R. Niazi, E. Tohidlou, H. Khosravi
doaj  

Calculation of the nuclear properties of Erbium 98 166 68Er nucleus by using IBM-1 and VMI model [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2012
The aim of the present work is to study some nuclear features of Erbium ( 98 166 68 Er ) such as energy levels E(J), energy transition Eγ, band crossing, and back bending phenomena in the mass region(A=166,and total number of bosons N=15)of the dynamical
Iman T. Al-Alawy   +2 more
doaj   +1 more source

Upconversion Luminescence from Sol-Gel-Derived Erbium- and Ytterbium-Doped BaTiO3 Film Structures and the Target Form

open access: yesPhotonics, 2023
Sol-gel technology has attracted attention in the fabrication of diverse luminescent materials and thin film structures, with forms that range from powders to microcavities.
Nikolai V. Gaponenko   +17 more
doaj   +1 more source

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