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Nanostructures of Titanium oxide (TiO2) are being studied for many promising applications, e.g., solar photovoltaics, solar water splitting for H2 fuel generation etc., due to their excellent photo-catalytic properties. We have synthesized…

材料科学 · 物理学 2016-09-30 Gangadhar Das , Manoj Kumar , A. K. Biswas , Ajay Khooha , Puspen Mondal , M. K. Tiwari

It is well known that moderate temperature baking of niobium cavities can improve the surface resistance. Presently, it is believed that the diffusion of oxygen into the bulk, resulting in interstitial defects, is responsible for the…

加速器物理 · 物理学 2023-06-09 Yegor Tamashevich , Alena Prudnikava , Jens Knobloch

We report the atomic layer deposition of titanium dioxide on carbon nanosheet templates and investigate the effects of post-deposition annealing in a helium environment using different characterization techniques. The crystallization of the…

Porous metal oxides with nano-sized features attracted intensive interest in recent decades due to their high surface area which is essential for many applications, e.g. Li ion batteries, photocatalysts, fuel cells and dye-sensitized solar…

材料科学 · 物理学 2015-02-26 Shaoren Deng , Mert Kurttepeli , Daire J. Cott , Sara Bals , Christophe Detavernier

Sodium bismuth titanate (NBT) is a promising oxide-ion conductor,but its electrical conductivity is highly sensitive to small changes in A-site stoichiometry and processing history.This sensitivity can reduce sample-to-sample…

材料科学 · 物理学 2026-05-26 Zhouyang He , Xiaoou Sun , Xinyue Wang , Duanting Yan

Here we report a novel nitridation technique for transforming niobium into hexagonal Nb2N which appears to be superconducting below 1K. The nitridation is achieved by high temperature annealing of Nb films grown on Si3N4/Si (100) substrate…

This research investigates the structural, topological, electrical and optical properties of pulsed laser deposited polycrystalline BiFeO3 thin films on silicon and glass substrate at varying deposition temperatures ranging from 400 degC to…

材料科学 · 物理学 2025-03-04 Viswajit R S , Jinesh K. B , Ashok K

Al2O3 thin films have been deposited at substrate temperatures between 500{\deg}C to 600{\deg}C by reactive magnetron sputtering using an additional arbitrary substrate bias to tailor the energy distribution of the incident ions. The films…

等离子体物理 · 物理学 2015-06-16 Marina Prenzel , Annika Kortmann , Adrian Stein , Achim von Keudell , Farwah Nahif , Jochen M. Schneider

In this work, tin oxide (SnO2)/multi-walled carbon nanotube (MWCNT) composite based ethanol sensor that exhibits fast response/recovery behaviour, large sensitivity, and good selectivity was demonstrated. First, Pd doped SnO2 (SnO2-Pd)…

应用物理 · 物理学 2019-06-10 Cihat Tasaltin

Modification of titanium microstructure after propagation of a melting shock wave (SW) generated by a femtosecond laser pulse is investigated experimentally and analyzed using hydrodynamic and atomistic simulations. Scanning and…

As candidate tritium breeder materials for use in the ITER helium cooled pebble bed, ceramic multiphasic compounds lying in the region of the quasi-binary lithium metatitanate- lithium orthosilicate system may exhibit mechanical and…

材料科学 · 物理学 2019-08-29 Dorian A. H. Hanaor , Matthias H. H. Kolb , Yixiang Gan , Marc Kamlah , Regina Knitter

In this paper, we report the growth of NaxCoO2 thin films by pulsed-laser deposition (PLD). It is shown that the concentration of sodium is very sensitive to the substrate temperature and the target-substrate distance due to the evaporation…

材料科学 · 物理学 2007-05-23 X. P. Zhang , Y. S. Xiao , H. Zhou , B. T. Xie , C. X. Yang , Y. G. Zhao

TiO2 with super narrow bandgap (1.1 eV~) are successfully synthesized via a facile and novel one-step single-mode magnetic microwave induced plasma treatment. The selectively surface Ti3+-doping on obtained TiO2 as trapping centers which…

应用物理 · 物理学 2022-02-04 Kunihiko Kato , Yunzi Xin , Takashi Shirai

The authors have shown that nanogranular indium tin oxide (ITO) films, deposited by spray pyrolysis on silicon substrate, demonstrate ultralow thermal conductivity ~ 0.84 +/-0.12 Wm-1K-1 at room temperature. This value is approximately by…

介观与纳米尺度物理 · 物理学 2018-03-16 Vladimir I. Brinzari , Alexandr I. Cocemasov , Denis L. Nika , Ghenadii S. Korotcenkov

Thin films of (1-x)BiFeO<sub>3</sub>-xPbTiO<sub>3</sub> (BF-xPT) with x ~ 0.60 were fabricated on Pt/Si substrates by chemical solution deposition of precursor BF and PT layers alternately in three different multilayer configurations. These…

The detailed mechanism of bonding in the cold spray process has remained elusive for both experimental and theoretical parties. Adiabatic shear instability and hydrodynamic plasticity models have been so far the most popular explanations.…

Peculiar features exist in the stress-temperature phase stability diagram of V$_{2}$O$_{3}$ such as a first order phase transition between the paramagnetic insulating and metallic phases that ends with a critical point, quantum phase…

The need for higher power density in electrical machines require better cooling strategies. Spray cooling is a very promising and relatively simple technology to apply, but involves extremely complicated physics. In this paper, a quasi-3D…

计算工程、金融与科学 · 计算机科学 2025-01-07 Christian Bergfried , Samaneh Abdi Qezeljeh , Ilia V. Roisman , Herbert De Gersem , Jeanette Hussong , Yvonne Späck-Leigsnering

The Si based TiO2 thin films were prepared via the combination both of Sol-Gel and Spin-Coating method. The films were sintered at 850 degrees Celsius for half an hour, and the resulting films were characterized by X-ray diffraction (XRD)…

材料科学 · 物理学 2024-11-08 Xiechao Hu , Chengxi Hu , Tieyan Guo , Zhi Yao , Yang Yang , Ze Qing Guo , Amanda Ekeminiabasi Williams

Thin-film-like high temperature superconducting Bi2Sr2CaCu2O8+x single crystals (TSB) with a typical thickness of 20-200 nm is produced by mechanical exfoliation. The TSB, which shows excellent superconductivity, can adhere firmly to the…

超导电性 · 物理学 2016-11-26 X Wang , L X You , X M Xie , X Y Yang , C T Lin , M H Jiang