Results 71 to 80 of about 165,960,467 (242)

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source

Diffusion tensor tractography as a supplementary tool to conventional MRI for evaluating patients with myelopathy

The Egyptian Journal of Radiology and Nuclear Medicine, 2014
Purpose: The aim of this study was to assess the clinical utility of DTI including apparent diffusion coefficient (ADC), fractional anisotropy (FA), in patients with symptoms of spinal cord myelopathy. Patients and methods: Fifteen subjects with clinical
Amal Amin A. El Maati, Nivine Chalabi
doaj   +1 more source

Nonmonotonic behavior of the anisotropy coefficient in superconductor-ferromagnet-superconductor trilayers

Physical Review B, 2009
We have measured critical temperatures and upper critical magnetic fields as a function of the ferromagnetic layer thickness, ${d}_{F}$, in two different superconductor(S)/ferromagnet(F)/superconductor(S) triple layers: $\text{Nb}/{\text{Cu}}_{0.41}{\text{Ni}}_{0.59}/\text{Nb}$ and $\text{Nb}/{\text{Pd}}_{0.81}{\text{Ni}}_{0.19}/\text{Nb}$. We vary ${d}
Cirillo, C., Bell, C., Iannone, G., Prischepa, S. L., Aarts, J., Attanasio, C., Bell, Chris   +6 more
openaire   +8 more sources

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

Advanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo, Mi Jeong Lee, Hyun Wook Kang, Seonhee Byeon, Soo‐Kyoung Choi, Nakwon Choi, Seung‐Woo Cho, Yoonhee Jin   +7 more
wiley   +1 more source

Configurational anisotropy in single-domain and pseudosingle-domain grains of magnetite [PDF]

, 2006
In classical domain theory, single-domain (SD) grains change their magnetization by coherent rotation, where the energy barrier to domain reversal is provided by the magnetocrystalline anisotropy or by shape anisotropy for elongated grains.
Williams, W., Paterson, G.A., Muxworthy, A., Paterson, Greig A., Williams, Wyn; id_orcid, Muxworthy, Adrian R., Muxworthy, Adrian R, Paterson, Greig A, Williams, Wyn   +8 more
core   +1 more source

Love wave dispersion in anisotropic visco-elastic medium

Annals of Geophysics, 1978
The paper presents a study on Love wave propagation in a anisotropic<br />visco-elastic layer overlying a rigid half space. The characteristic frequency<br />equation is obtained and the variation of the wave number with frequency<br /> ...
G. GIR SUBHASH, V. GAUR
doaj   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

Joint factor of basalt and its relationship with strength and deformation characteristics

Yantu gongcheng xuebao
The joint density, joint inclination angle and joint roughness are the three key factors that control the mechanical response of basalts. Based on the 3D printing technology, the uniaxial compression and interfacial shear tests are carried out to deeply ...
KONG Yang 1, RUAN Huaining 2, ZHANG Guirong 1, HE Ning 1, WANG Zhangchun 1
doaj   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source