Results 91 to 100 of about 47,681 (288)

GeAl2‐2xFe2xO3(OH)4 Nanotubes: New Electrocatalyst for Oxygen Evolution Reaction

Advanced Functional Materials, EarlyView.
Fe‐doped imogolite nanotubes are synthesized via a one‐step hydrothermal method with varying Fe substitution ratios x. Structural and spectroscopic analyses confirm homogeneous Fe incorporation while preserving tubular shape. Optimal doping at x = 0.05 enhances optical absorption, narrows band gap, reduces charge transfer resistance, and significantly ...
Yassine Naciri, Jian Li, Wahid Ullah, Fabien Baron, Franck Bourdelle, Stéphan Rouzière, Claire Goldmann, Erik Elkaim, Thomas Bizien, Rachid Belkhou, Delphine Vantelon, Mohamed Nawfal Ghazzal, Erwan Paineau   +12 more
wiley   +1 more source

Magnetic and Structural Response Tuned by Coexisting Mn Concentration‐Dependent Phases in MnBi2Te4 Thin Film Grown on GaAs(001) by Molecular Beam Epitaxy

Advanced Functional Materials, EarlyView.
The study explores structural and magnetic properties of one of the most recent topological quantum materials (MnBi2Te4). The Mn‐poor structure leads to stacking faults (quintuple layer ‐ QL of Bi2Te3 formation instead of a septuple layer ‐ SL of MnBi2Te4), resulting in a coexistence between weak antiferromagnetism and ferromagnetism.
Wesley F. Inoch, Sergio L. A. Mello, Gilberto Rodrigues‐Junior, Sukarno O. Ferreira, Marcelo M. Sant'Anna, Benjamin R. Salles, Mateus T. Souza, Sérgio L. Morelhão, Maybi F. Sampaio, Bráulio S. Archanjo, Leonarde N. Rodrigues   +10 more
wiley   +1 more source

Ptychographic coherent x-ray diffractive imaging in the water window

Optics Express, 2011
Coherent x-ray diffractive microscopy enables full reconstruction of the complex transmission function of an isolated object to diffraction-limited resolution without relying on any optical elements between the sample and detector. In combination with ptychography, also specimens of unlimited lateral extension can be imaged.
Giewekemeyer, K., Beckers, M., Gorniak, T., Grunze, M., Salditt, T., Rosenhahn, A.   +5 more
openaire   +5 more sources

Grain Boundary Space Charge Engineering of Solid Oxide Electrolytes: Model Thin Film Study

Advanced Functional Materials, EarlyView.
This study demonstrates unprecedented control of grain boundary electrical properties in solid electrolytes. Selective diffusion of cations through grain boundaries in thin films enables 12 orders of magnitude variation in ionic resistance, proving that systematic chemical modification of grain boundary electrical properties is feasible.
Thomas Defferriere, Yong Beom Kim, Colin Gilgenbach, James M. LeBeau, WooChul Jung, Harry L. Tuller   +5 more
wiley   +1 more source

X-ray microscopy and talbot imaging with the matter in extreme conditions X-ray imager at LCLS

Scientific Reports
The last decade has shown the great potential that X-ray Free Electron Lasers (FEL) have to study High Energy Density (HED) physics. Experiments at FELs have made significant breakthroughs in Shock Physics and Dynamic Diffraction, Dense Plasma Physics ...
Eric Galtier, Hae Ja Lee, Dimitri Khaghani, Nina Boiadjieva, Peregrine McGehee, Ariel Arnott, Brice Arnold, Meriame Berboucha, Eric Cunningham, Nick Czapla, Gilliss Dyer, Robert Ettelbrick, Philip Hart, Philip Heimann, Marc Welch, Mikako Makita, Arianna E. Gleason, Silvia Pandolfi, Anne Sakdinawat, Yanwei Liu, Michael J. Wojcik, Daniel Hodge, Richard Sandberg, Maria Pia Valdivia, Victorien Bouffetier, Gabriel Pérez-Callejo, Frank Seiboth, Bob Nagler   +27 more
doaj   +1 more source

The Phase-Contrast Imaging Instrument at the Matter in Extreme Conditions Endstation at LCLS

, 2016
We describe the Phase-Contrast Imaging instrument at the Matter in Extreme Conditions (MEC) endstation of the Linac Coherent Light Source. The instrument can image phenomena with a spatial resolution of a few hundreds of nanometers and at the same time ...
Arnold, Brice, Brown, Shaughnessy B., Fry, Alan, Galtier, Eric C., Gleason, Arianna, Granados, Eduardo, Hashim, Akel, Hastings, Jerome B., Lee, Hae Ja, Nagler, Bob, Samberg, Dirk, Schroer, Christian G., Schropp, Andreas, Seiboth, Frank, Tavella, Franz, Xing, Zhou   +15 more
core   +1 more source

Growth of Millimeter‐Sized BaTaO2N Single Crystals by an NH3‐Assisted BaCl2 Flux Method

Advanced Functional Materials, EarlyView.
Millimeter‐sized BaTaO2N single crystals are successfully grown from a BaCl2 flux under NH3 flow. Their comprehensive characterization, including dielectric properties, is demonstrated, and the possible growth mechanisms are discussed. Abstract Perovskite‐type oxynitrides have attracted considerable attention due to their excellent photocatalytic ...
Ginji Harada, Mirabbos Hojamberdiev, Hajime Wagata   +2 more
wiley   +1 more source

Multiple Twinning in Nacre and Aragonite

Advanced Functional Materials, EarlyView.
Electron backscatter diffraction map of a cluster of geologic aragonite, exhibiting single, double, and triple twins. The whole cluster is approximately 2 cm wide. Colors indicate crystal orientations, so that pixels where the a‐, b‐, and c‐axis is perpendicular to the image plane are green, red, and blue, respectively.
Connor A. Schmidt, William O. Nachlas, Bil Schneider, Xiaoming Mao, Eric Tambutté, Alexander A. Venn, Sylvie Tambutté, Pupa U. P. A. Gilbert   +7 more
wiley   +1 more source

Three-dimensional X-ray diffraction imaging of dislocations in polycrystalline metals under tensile loading

Nature Communications, 2018
Identifying atomic defects during deformation is crucial to understand material response but remains challenging in three dimensions. Here, the authors couple X-ray Bragg coherent diffraction imaging and atomistic simulations to correlate a strain field ...
Mathew J. Cherukara, Reeju Pokharel, Timothy S. O’Leary, J. Kevin Baldwin, Evan Maxey, Wonsuk Cha, Jorg Maser, Ross J. Harder, Saryu J. Fensin, Richard L. Sandberg   +9 more
doaj   +1 more source

Biomolecular imaging and electronic damage using X-ray free-electron lasers

, 2010
Proposals to determine biomolecular structures from diffraction experiments using femtosecond X-ray free-electron laser (XFEL) pulses involve a conflict between the incident brightness required to achieve diffraction-limited atomic resolution and the ...
E Wolf, G Oszlanyi, GF Schroder, Harry M. Quiney, HN Chapman, JC Slater, JR Fienup, Keith A. Nugent, L Young, LW Whitehead, R Fung, R Neutze, RA Dilanian, SP Hau-Riege, SP Hau-Riege, SP Hau-Riege, V Elser, Z Jurek, Z Jurek   +18 more
core   +1 more source