Results 81 to 90 of about 92,344 (249)

THE DIELECTRIC STUDY AND REFRACTIVE INDEX OF NIOBIUM PENTOXIDE (Nb2O5) UNDER ALTERNATIVE CURRENT CONDITIONS [PDF]

, 2022
The equations for dielectric constant, loss factor of niobium pentoxide and its relationship with the refractive index under alternative current conditions were derived in this work. The algorithms for the dielectric constant, loss factor, and refractive
Ikyumbur , T. J., Hemba , E. C., Amon , P. S.   +2 more
core  

Combining δ2H and δ34S stable isotopes identifies diverse moult strategies in a short‐distance migratory bird

Ibis, Volume 168, Issue 3, Page 1002-1015, July 2026.
Moult strategies in birds can vary considerably even within a single species, particularly in terms of where moulting takes place. Yet, the factors underlying this variation and its consistency across years and individuals remain poorly understood. One such strategy, moult migration, involves individuals moving to a specific moulting location amid ...
Elza Marija Zacmane, Ivo Dinsbergs, Steffen Hahn, Māris Jaunzemis, Valts Jaunzemis, Oskars Keišs, Ance Priedniece, Viesturs Vīgants, Martins Briedis   +8 more
wiley   +1 more source

Recent Developments in Deep‐Ultraviolet Flat Optics

Nanophotonics, Volume 15, Issue 10, 27 May 2026.
Deep‐ultraviolet flat optics (DUVFO) is emerging as a key platform for next‐generation photonics, enabling advanced functionalities beyond conventional DUV optics. This review outlines materials, devices, and system advances, highlighting wide‐bandgap platforms, while identifying key challenges in dispersion control, characterization, and wafer‐scale ...
Omar A. M. Abdelraouf, Tao Wang, Zeng Wang   +2 more
wiley   +1 more source

Development of a Method for the Synthesis of Ammoniacal Niobium Oxalate Trihydrate for Use as a Precursor in Chemical Reactions

Materials Research
In this project, a method was developed to synthesize ammoniacal niobium oxalate (NH4)(NbO(C2O4)(H2O)ᵧ)·XH2O, aimed at its application in the preparation of niobium-incorporated materials. This transition metal exhibits excellent properties and is widely
Vitor Manoel Silva Fernandes de Souza, Vinícius Gomes de Sousa Duarte, Kivia Fabiana Galvão Araújo, Maria José dos Santos Lima, Gerlânea Silva Oliveira, Sibele Berenice Castella Pergher, Uilame Umbelino Gomes   +6 more
doaj   +1 more source

Freeze‐cast porous alumina tubes for membrane applications: Role of niobium pentoxide in microstructure and gas transport properties

Journal of The American Ceramic Society
This study investigates the porosity, microstructure, mechanical strength, and gas permeation behavior of high‐purity α‐Al2O3 tubes doped with 0.25‒5.0 wt.% of monoclinic or amorphous Nb2O5, fabricated via freeze‐casting and pressureless sintering. X‐ray
Priscila Cristh Fonseca Alves, D. G. da Silva, Jéssica de Oliveira Notório Ribeiro, D. C. De Melo, Leonardo dos Santos Pereira, Wander Luiz Vasconcelos   +5 more
semanticscholar   +1 more source

Synthesis and Characterization of Nano-Particles of Niobium Pentoxide with Orthorhombic Symmetry

Metals, 2017
In this work, a set of nanoparticles of Nb2O5 nanoparticles were grown by both the Pechini and the sol-gel methods. The amorphous materials were calcined at 650 #xB0;C or at 750 °C.
Miryam Rincón Joya, José José Barba Ortega, Angela Mercedes Raba Paez, José Gadelha da Silva Filho, Paulo de Tarso Cavalcante Freire   +4 more
doaj   +1 more source

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

Advanced Functional Materials, Volume 36, Issue 41, 21 May 2026.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu, Taoyu Zou, Cheng‐Yan Xu, Liang Zhen, Yang Li, Yong‐Young Noh   +5 more
wiley   +1 more source

Synthesis and thermal evolution of structure in alkoxide-derived niobium pentoxide gels [PDF]

, 1993
Niobium pentoxide gels in the form of transparent monoliths and powder have been synthesized from the controlled hydrolysis and polycondensation of niobium pentaethoxide under different experimental conditions using various mole ratios of Nb(OC2H5)5:H2O ...
Bansal, Narottam P.
core  

Phase equilibria as related to crystal structure in the system niobium pentoxide-tungsten trioxide

, 1966
The phase equilibrium diagram for the binary system niobium pentoxide-tungsten trioxide has been constructed from results of x-ray diffraction studies on both single crystals and powders and from fusion characteristics.
Roth, R.S.; Waring, J.L.
core   +1 more source

Synthesis of Tungsten Trioxide Films Co-doping with Molybdenum Trioxide and Niobium Pentoxide [PDF]

วิทยานิพนธ์ (วศ.ม. (วิศวกรรมวัสดุ))--มหาวิทยาลัยสงขลานครินทร์, 2561This research aims to synthesize tungsten trioxide films co-doping with molybdenum trioxide and niobium pentoxide applied for the electrochromic materials.
สุรชัย ไชยชนะ
core   +2 more sources