Results 41 to 50 of about 77,736 (258)

Polymetallic Cu-Bi-(Pb-Zn-Co-Ag) mineralization of the Perin Potok locality near Bor, Serbia [PDF]

Geološki Anali Balkanskoga Poluostrva, 2013
Complex polymetallic Cu-Bi-(Pb-Zn-Co-Ag) mineralization of the Perin Potok locality occurs as disseminations and fine nests in quartz-ankerite-(sericite) veins. The veins are located in metamorphic rocks of the outer contact zone of the Variscan
Pačevski Aleksandar, Šarić Kristina, Cvetković Vladica   +2 more
doaj   +1 more source

A Density Functional Tight Binding Study of Acetic Acid Adsorption on Crystalline and Amorphous Surfaces of Titania

Molecules, 2015
We present a comparative density functional tight binding study of an organic molecule attachment to TiO2 via a carboxylic group, with the example of acetic acid.
Sergei Manzhos, Giacomo Giorgi, Koichi Yamashita   +2 more
doaj   +1 more source

Perturbed Angular Correlation Technique at ISOLDE/CERN Applied for Studies of Hydrogenated Titanium Dioxide (TiO₂): Observation of Cd-H Pairs

Crystals, 2022
Profound understanding of the local electronic and defect structure in semiconductors always plays a vital role in the further developing of applications of such materials.
Dmitry V. Zyabkin, Juliana Schell, João G. M. Correia, Ulrich Vetter, Peter Schaaf   +4 more
doaj   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Textural evolution and phase transformation in titania membranes: Part 2. - Supported membranes [PDF]

, 1993
Nanostructural evolution and phase transformation in supported and unsupported titania membranes have been studied using Raman spectroscopy, X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM).
Burggraaf, Anthonie J., Keizer, Klaas, Kumar, Krishnankutty-Nair P., Nagamoto, Hidetoshi, Okubo, Tatsuya   +4 more
core   +2 more sources

In Situ Study of Resistive Switching in a Nitride‐Based Memristive Device

Advanced Functional Materials, EarlyView.
In situ TEM biasing experiment demonstrates the volatile I‐V characteristic of MIM lamella device. In situ STEM‐EELS Ti L2/L3 ratio maps provide direct evidence of the oxygen vacancies migrations under positive/negative electrical bias, which is critical for revealing the RS mechanism for the MIM lamella device.
Di Zhang, Rohan Dhall, Matthew M. Schneider, Cun Li, Chengyu Song, Sundar Kunwar, Hongyi Dou, Natanii R. Yazzie, Henry Tran, Daniel Appuing, Jim Ciston, Nicholas G. Cucciniello, Pinku Roy, Michael T. Pettes, John Watt, Winson Kuo, Haiyan Wang, Ye Cao, Rodney J. McCabe, Aiping Chen   +19 more
wiley   +1 more source

Structure of a model TiO2 photocatalytic interface [PDF]

, 2016
The interaction of water with TiO2 is crucial to many of its practical applications, including photocatalytic water splitting. Following the first demonstration of this phenomenon 40 years ago there have been numerous studies of the rutile single-crystal
Bikondoa, O., Cabailh, G., Grinter, D. C., Humphrey, D. S., Hussain, H., Lindsay, R., Michaelides, A., Pang, C. L., Thornton, G., Tocci, G., Torrelles, X., Woolcot, T., Yim, C. M., Zegenhagen, J.   +13 more
core   +4 more sources

Ultrastable Photoactive Halide Perovskite Nanocrystal‐Sensitized SnO2 Nanorods for Room‐Temperature NO2 Detection

Advanced Functional Materials, EarlyView.
ABSTRACT Metal oxide (MOx)‐based NO2 gas sensors typically require high temperatures or ultraviolet light, limiting their practical use. To enable visible‐light activation at room temperature, efficient and stable photosensitizers should be integrated with nanostructured MOx hosts.
Yeonji Yuk, Dokyum Kim, Jun‐Cheol Park, Yoonsung Jung, Inhyeok Oh, Donghyeon Lee, Yejoon Kim, Ji‐Eun Yeo, Young Min Song, Chang‐Lyoul Lee, Sanghan Lee   +10 more
wiley   +1 more source

Synthesis of bio-active titanium oxide coatings stimulated by electron-beam plasma

Open Chemistry, 2014
Advantages of the electron-beam plasma (EBP) for production of bioactive titanium oxide coatings were experimentally studied. The coatings were synthesized in EBP of oxygen on the surface of plane titanium substrates.
Vasilieva Tatiana, Sokolov Igor, Sigarev Andrey, Tun Win Aung   +3 more
doaj   +1 more source

Kinetic Model for Nanocrystalline Anatase to Rutile Polymorphic Transformation [PDF]

Chemical and Biochemical Engineering Quarterly, 2017
In this paper, kinetic models are presented for phase transformation from anatase to rutile in nanocrystalline samples at different temperature ranges.
R. Shakibania
doaj   +1 more source