Results 71 to 80 of about 3,293 (219)

High-Efficiency All-Dielectric Metasurfaces for the Generation and Detection of Focused Optical Vortex for the Ultraviolet Domain

Applied Sciences, 2020
The optical vortex (OV) has drawn considerable attention owing to its tremendous advanced applications, such as optical communication, quantum entanglement, and on-chip detectors.
Ziheng Zhang, Tong Li, Xiaofei Jiao, Guofeng Song, Yun Xu   +4 more
doaj   +1 more source

Competitive Redox Chemistries in Vanadium Niobium Oxide for Ultrafast and Durable Lithium Storage

Nano-Micro Letters, 2023
Highlights The over-reduction from Nb5+ to Nb3+ in the lithiation process have been demonstrated to be the critical reason for the capacity decay of Nb2O5 for the first time.
Xiaobo Ding, Jianhao Lin, Huiying Huang, Bote Zhao, Xunhui Xiong   +4 more
doaj   +1 more source

Potential modification of electrochemical properties in anode niobium pentoxide [PDF]

, 2008
In the present work the technique for generation of electrochrome effect (ECE) in Nb₂O₅ amorphous anodic oxide films (AOF) is proposed. We have also found that when AOF is polarized by the packages of microsecond pulses, initial potential of gas emission
Deribo, S. G., Gomozov, V. P., Skatkov, L. I., Skrebtsova, S. S.   +3 more
core  

Exceptional Electromagnetic Wave Absorption in High‐Entropy Carbides Enabled by Lattice Distortion Engineering

Rare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The growing concern over human health issues, driven by increasingly severe electromagnetic pollution from 5G communication, has made the urgent development of high‐performance electromagnetic wave (EMW) absorbing materials. Although carbide‐based materials are promising because of their conductive and polarization losses, existing single ...
Chenqiang Duan, Li Guan, Shijie Han, Yujie Zhu, Ziyang Huang, Keqiang Cheng, Yuanyuan Zhang, Xinglai Yuan, Biao Zhao, Rui Zhang   +9 more
wiley   +1 more source

SRF Cavity Fabrication and Materials

, 2015
The technological and metallurgical requirements of material for highgradient superconducting cavities are described. High-purity niobium, as the preferred metal for the fabrication of superconducting accelerating cavities, should meet exact ...
Singer, W
core   +1 more source

Revisiting the Role of Nb2O5 Precursors on Solid‐State Formation Reactions of (K0.5Na0.5)NbO3

Journal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
ABSTRACT (K0.5Na0.5)NbO3 (KNN) is a key lead‐free piezoelectric material, yet reproducibility is limited by microstructural and chemical inhomogeneity. We systematically examined how the crystal structure and the particle size distribution of Nb2O5 control KNN formation. Specifically, we studied four Nb2O5 precursors: orthorhombic and monoclinic phases,
Takuma Shoji, Hyunwook Nam, Jaehun Ye, Daiki Ito, Yuka Takagi, Yasuhiro Yoneda, Hajime Nagata   +6 more
wiley   +1 more source

High Sensitivity Optical Sensor Based on Surface Plasmon Effect on Graphene for Detection of DMSO Concentrations [PDF]

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this study, a rib waveguide is used in the design of a plasmonic sensor. The structure consists of a dielectric substrate constituted of tantalum pentoxide (Ta2O5).
Gabriel A. Souto, Nilson H. O. Cunha, José P. da Silva   +2 more
doaj   +1 more source

How Well Do We Know VPDB—Part 2: Interlaboratory Assessment of Existing δ13CVPDB Reference Materials

Rapid Communications in Mass Spectrometry, Volume 40, Issue 4, 28 February 2026.
ABSTRACT Rationale In January 2024, the IAEA experts meeting endorsed both δ13C scales that are currently used within the scientific community: the Vienna Peedee belemnite (VPDB) δ13C scale defined by NBS 19 with a value of +1.95‰ exactly, and the VPDB‐LSVEC scale defined by NBS 19 and the lithium carbonate LSVEC with a value of −46.60‰ exactly ...
Heiko Moossen, Pharahilda M. Steur, Federica Camin, Bor Krajnc, Anett Enke, Heike Geilmann, Dipayan Paul, Markus Lange, Isabell von Rein, Harro A. J. Meijer   +9 more
wiley   +1 more source

Emerging Heterogeneous Catalysis for Valorization of Biomass‐Derived Platform Molecules: The Systematic Review Toward Sustainable Biorefinery Applications

Advanced Energy and Sustainability Research, Volume 7, Issue 2, February 2026.
Recent advances in heterogeneous catalysis for biomass valorization are highlighted, focusing on furfural, hydroxymethylfurfural (HMF), levulinic acid and glycerol conversion into fuels and chemicals. Metal oxides, zeolites, metal–organic frameworks (MOFs), porous organic polymers (POPs), carbons, and supported metals are compared, emphasizing acid ...
Pratikkumar Lakhani, Atthapon Srifa
wiley   +1 more source

Nanomagnetic-Mediated Drug Delivery for The Treatment of Dental Disease [PDF]

, 2018
Maintaining the vitality of the dental pulp, the highly innervated and highly vascular, innermost layer of the tooth, is a critical goal of any dental procedure. Upon injury, targeting the pulp with specific therapies is challenging because it is encased
Choi, Seung K., Chuncai, Kong, Dashtimoghadam, Erfan, Depireux, Didier A., Ji, Yadong, Lin, Xiaoying, Masri, Radi, Melo, Mary Anne, Nie, Ahihong, Sultan, Ahmed S., Tayebi, Lobat, Weir, Michael, Xu, Huakun   +12 more
core   +2 more sources