Results 181 to 190 of about 165,960,467 (242)

Tunable Negative Thermal Expansion in Fe/Cr‐Substituted Nd2Co17 Compounds via Magnetoelastic Coupling

Advanced Science, EarlyView.
This study achieves anisotropic thermal expansion tuning in Nd2(Co1‐xFex)17‐yCry compounds via a magnetoelastic strategy. Variable‐temperature synchrotron X‐ray diffraction reveals that increased Fe content induces switchable lattice responses. Compositional control reduces the volume expansion coefficient αV by 20% (x═0.7) and modulates TC (442–625 K),
Jiayuan Li, Chenfei Qv, Haoran Tu, Qinfen Gu, Wayne D. Hutchison, Stewart J. Campbell, Zhenxiang Cheng, Wenquan Wang, Jianli Wang   +8 more
wiley   +1 more source

Synergy of Pd Clusters and TiO2 {101} for Photocatalytic Nonoxidative Coupling of Methane

Advanced Science, EarlyView.
This study presents photocatalytic nonoxidative coupling of methane over cal‐Pd0.05/TiO2{101}, achieving near 100% selectivity and long‐term stability under mild flow conditions through synergistic single atoms and clusters catalysis. ABSTRACT Photocatalytic nonoxidative coupling of methane (NOCM) offers a sustainable route to valorize CH4 into C2 ...
Jianlong Yang, Annika S. Tang, Junwang Tang   +2 more
wiley   +1 more source

Magnetoelectric Nanoparticle‐Based Wireless Brain–Computer Interface: Underlying Physics and Projected Technology Pathway

Advanced Science, EarlyView.
Magnetoelectric nanoparticles (MENPs) enable fully wireless, minutely invasive neuromodulation, and potentially neural recording, by converting magnetic into electric and, conversely, electric into magnetic fields, respectively, at high spatiotemporal resolution.
Elric Zhang, Max Shotbolt, Mostafa Abdel‐Mottaleb, Shawnus Chen, Victoria Andre, Jieyuan Tian, Jonathan Shulgach, Max Murphy, Brian Noga, Ping Liang, Darcy Griffin, Douglas Weber, Marta Pardo, Salvador Pane, Sakhrat Khizroev   +14 more
wiley   +1 more source

Broadening Hard‐Magnet Discovery Beyond Symmetry Constraints via Unified Effective Anisotropy

Advanced Science, EarlyView.
A unified effective‐anisotropy descriptor (Keff) extends hard‐magnet screening across all seven crystal systems, beyond the uniaxial restriction of conventional searches. Machine‐learning screening of 9320 known ferromagnets and diffusion‐model generation together yield 38 rare‐earth‐free or ‐lean candidates with DFT‐validated magnetic hardness (κ > 1),
Hojae Kim, Hyeondeok Shin, Kyungju Nam, Seunghyo Noh, Donghwi Kim, Yousung Jung   +5 more
wiley   +1 more source

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Anisotropy coefficients of a Mueller matrix

Journal of the Optical Society of America A, 2011
Anisotropy coefficients α, β, and γ that describe the type and the relative amount of the three kinds of anisotropy generally present in a Mueller matrix are introduced. Their derivation, algebraic properties, and physical interpretation are discussed.
Arteaga, Oriol, Garcia-Caurel, Enric, Ossikovski, Razvigor   +2 more
openaire   +2 more sources

Anisotropy in the Hall coefficient of indium

Journal of Physics F: Metal Physics, 1986
The Hall coefficient of single-crystal indium was measured in two geometries: B//(100)(RH perpendicular to ) and B//(001)(RH//) at 4.2K. An anisotropy was observed in the Kohler plot: in intermediate and low fields, RH perpendicular to is more negative than RH//. Isothermal measurements of RH at 3.5K and 1.9K are also reported. The effects of the Fermi
K Yonemitsu, K Nakayama, H Sato
openaire   +1 more source

The anisotropy coefficient in Cerenkov counting

Applied Radiation and Isotopes, 1998
Abstract We present an improved Cerenkov standardization method, which takes into account the directional nature of the Cerenkov light. A new expression for the Cerenkov counting efficiency is derived by assuming that the generation of photoelectrons at the photocathode is described by the Poisson law.
A. Grau Malonda, A. Grau Carles
openaire   +1 more source

Pore-Pressure-Coefficient Anisotropy Measurements for Intrinsic and Induced Anisotropy in Sandstone

SPE Reservoir Evaluation & Engineering, 2008
SummaryIn this study, we determine experimentally the effect of inherent and stress-induced anisotropy on stiffness components, elastic moduli, and Biot's pore-pressure coefficients (PPCs) for Lyons outcrop Colorado sandstone, which exhibits a clear transverse isotropic rock structure.
Ashraf Al-Tahini, Younane Abousleiman
openaire   +1 more source

Flow fluctuations and measurement of anisotropy coefficients

Indian Journal of Physics, 2011
Recent interest in fluctuations in the anisotropy coefficients enhances the need for an accurate determination of their values. It is argued, and shown using the help of simulated data, that the measured value of anisotropy coefficients obtained using certain commonly used methods to eliminate the contribution of non-flow correlations, may also be a ...
S. Raniwala, R. Raniwala, S. Bhardwaj, Y. P. Viyogi   +3 more
openaire   +1 more source

On Anisotropy of Nuclear Spin‐Diffusion Coefficient

physica status solidi (b), 1988
AbstractThe anisotropy of the spin diffusion coefficient for the simple cubic lattice is investigated. The analysis is based on using the non‐equilibrium statistical operator method. The form of the correlation function, which determines the spin diffusion coefficient, is treated by the momentum method.
E. R. Butkevich, R. Kh. Sabirov
openaire   +1 more source