Results 41 to 50 of about 2,542 (183)

In situ high-pressure wide-angle hard x-ray photon correlation spectroscopy: A versatile tool probing atomic dynamics of extreme condition matter

Matter and Radiation at Extremes, 2023
With the advent of new synchrotron radiation x-ray sources that provide a significantly enhanced coherent flux, high-energy x-ray photon correlation spectroscopy measurements can be performed on materials in a diamond anvil cell. Essential information on
Qiaoshi Zeng
doaj   +1 more source

Individualization and Purification of Carbon Nanothreads

Small, EarlyView.
Reductive dissolution enables the solution processing of carbon nitride nanothreads into individualized nanothreads that can be assembled into ultrathin films. The resulting interconnected networks exhibit weakly semiconducting behavior, with the conductivity decreasing by only ∼40% from room temperature to 2 K.
George Bepete, Sikai Wu, Bohan Xu, Ámbar E. Escobar Colón, Andres Fest, Da Zhou, Yu Lei, Methembe Moyo, Zhuohang Yu, George Chimowa, Kazunori Fujisawa, Nestor Perea‐Lopez, Vincent H. Crespi, Mauricio Terrones   +13 more
wiley   +1 more source

Loss Analysis of Low Bandgap (Ag,Cu)(In,Ga)Se2 Solar Cells for Tandem Applications

Small, EarlyView.
A complete loss analysis has been carried out on the state‐of‐the‐art 1.0 eV bandgap (Ag,Cu)(In,Ga)Se2 solar cells, which are of interest for tandem devices. The most significant loss mechanisms are found in the open‐circuit voltage, due to non‐radiative losses in the chalcopyrite absorber, and in the fill factor, caused by space‐charge region ...
Francesco Lodola, Sevan Gharabeiki, Maximilian Krause, Shiro Nishiwaki, Romain Carron, Susanne Siebentritt   +5 more
wiley   +1 more source

Structural and electron spin state changes in an x-ray heated iron carbonate system at the Earth's lower mantle pressures

Physical Review Research, 2022
The determination of the spin state of iron-bearing compounds at high pressure and temperature is crucial for our understanding of chemical and physical properties of the deep Earth.
Johannes M. Kaa, Christian Sternemann, Karen Appel, Valerio Cerantola, Thomas R. Preston, Christian Albers, Mirko Elbers, Lélia Libon, Mikako Makita, Alexander Pelka, Sylvain Petitgirard, Christian Plückthun, Vladimir Roddatis, Christoph J. Sahle, Georg Spiekermann, Christian Schmidt, Anja Schreiber, Robin Sakrowski, Metin Tolan, Max Wilke, Ulf Zastrau, Zuzana Konôpková   +21 more
doaj   +1 more source

A Review of the Melting Curves of Transition Metals at High Pressures Using Static Compression Techniques

Crystals, 2021
The accurate determination of melting curves for transition metals is an intense topic within high pressure research, both because of the technical challenges included as well as the controversial data obtained from various experiments.
Paraskevas Parisiades
doaj   +1 more source

Synthesis and Crystal Structure of Sb2O2[CO3] with Stereochemically Active Lone Electron Pairs at Elevated Pressures

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
Sb2O2[CO3] was synthesized at 20 GPa in a laser‐heated diamond cell and is an antimony oxocarbonate with stereochemically active lone electron pairs on the antimony atoms. Its crystal structure is characterized by the presence of [CO3]2–‐groups and by interconnected “Sb2O5‐units” which form a Sb–O‐network within the b,c lattice plane.
Dominik Spahr, Lkhamsuren Bayarjargal, Lukas Brüning, Elena Bykova, Maxim Bykov, Victor Milman, Nico Giordano, Björn Winkler   +7 more
wiley   +1 more source

Submillisecond in situ X-ray diffraction measurement system with changing temperature and pressure using diamond anvil cells at BL10XU/SPring-8

Journal of Synchrotron Radiation
Recently, there has been a high demand for elucidating kinetics and visualizing reaction processes under extreme dynamic conditions, such as chemical reactions under meteorite impact conditions, structural changes under nonequilibrium conditions, and in ...
Saori Kawaguchi-Imada, Ryosuke Sinmyo, Kenji Ohta, Shogo Kawaguchi, Toshiyuki Kobayashi   +4 more
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The Structure of Ferroselite, FeSe2, at Pressures up to 46 GPa and Temperatures down to 50 K: A Single-Crystal Micro-Diffraction Analysis

Crystals, 2018
We conducted an in situ crystal structure analysis of ferroselite at non-ambient conditions. The aim is to provide a solid ground to further the understanding of the properties of this material in a broad range of conditions.
Barbara Lavina, Robert T. Downs, Stanislav Sinogeikin   +2 more
doaj   +1 more source

Nanomaterials by severe plastic deformation: review of historical developments and recent advances

Materials Research Letters, 2022
Severe plastic deformation (SPD) is effective in producing bulk ultrafine-grained and nanostructured materials with large densities of lattice defects.
Kaveh Edalati, Andrea Bachmaier, Victor A. Beloshenko, Yan Beygelzimer, Vladimir D. Blank, Walter J. Botta, Krzysztof Bryła, Jakub Čížek, Sergiy Divinski, Nariman A. Enikeev, Yuri Estrin, Ghader Faraji, Roberto B. Figueiredo, Masayoshi Fuji, Tadahiko Furuta, Thierry Grosdidier, Jenő Gubicza, Anton Hohenwarter, Zenji Horita, Jacques Huot, Yoshifumi Ikoma, Miloš Janeček, Megumi Kawasaki, Petr Král, Shigeru Kuramoto, Terence G. Langdon, Daniel R. Leiva, Valery I. Levitas, Andrey Mazilkin, Masaki Mito, Hiroyuki Miyamoto, Terukazu Nishizaki, Reinhard Pippan, Vladimir V. Popov, Elena N. Popova, Gencaga Purcek, Oliver Renk, Ádám Révész, Xavier Sauvage, Vaclav Sklenicka, Werner Skrotzki, Boris B. Straumal, Satyam Suwas, Laszlo S. Toth, Nobuhiro Tsuji, Ruslan Z. Valiev, Gerhard Wilde, Michael J. Zehetbauer, Xinkun Zhu   +48 more
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A high‐energy X‐ray beamline for materials science research at SPring‐8: BL15XU

Journal of Synchrotron Radiation, EarlyView.
The Japanese synchrotron facility SPring‐8 has recently relaunched BL15XU as a high‐energy X‐ray beamline for materials science research. A comprehensive description of the technical details and science cases is presented.The high‐energy X‐ray beamline BL15XU is designed to drive advancements in materials science and high‐pressure research by ...
Hiroyuki Ohsumi, Yuji Higo, Yujiro Hayashi, Jaemyung Kim, Noriyoshi Tsujino, Sho Kakizawa, Tetsuo Irifune, Tomohiro Ohuchi, Yoshio Kono, Hirokatsu Yumoto, Takahisa Koyama, Hiroshi Yamazaki, Yasunori Senba, Haruhiko Ohashi, Hidekazu Takano, Michihiro Sugahara, Taito Osaka, Makina Yabashi   +17 more
wiley   +1 more source