Results 61 to 70 of about 8,951 (266)

Geomagnetic Paleointensity Around 30 Ma Estimated From Afro‐Arabian Large Igneous Province

open access: yesGeochemistry, Geophysics, Geosystems, 2020
We conducted a geomagnetic paleointensity study of lava flows at ∼30 Ma distributed in the Lima‐Limo section of the Afro‐Arabian Large Igneous Province.
Yutaka Yoshimura   +5 more
doaj   +1 more source

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

open access: yesAdvanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

On subordination conditions for systems of minimal di erential operators

open access: yesСовременная математика: Фундаментальные направления
In this paper, we provide a review of results on apriori estimates for systems of minimal differential operators in the scale of spaces \(L^p(\Omega),\) where \(p\in[1,\infty].\) We present results on the characterization of elliptic and \(l ...
D. V. Limanskii, M. M. Malamud
doaj   +1 more source

Explicit T-coercivity for the Stokes problem: A coercive finite element discretization

open access: yesComputers & Mathematics with Applications
Using the T-coercivity theory as advocated in [Chesnel, Ciarlet, T -coercivity and continuous Galerkin methods: application to transmission problems with sign changing coefficients (2013)], we propose a new variational formulation of the Stokes problem which does not involve nonlocal operators.
Patrick Ciarlet, Erell Jamelot
openaire   +2 more sources

Universal Conductance Fluctuations in Quantum Anomalous Hall Insulators

open access: yesAdvanced Materials, EarlyView.
Universal conductance fluctuations are observed in mesoscopic quantum anomalous Hall insulators. Two distinct fluctuation patterns are identified, arising from different interference processes of bulk and chiral edge states, respectively. These findings unveil rich quantum interference phenomena in quantum anomalous Hall insulators and provide insights
Peng Deng   +11 more
wiley   +1 more source

Nb-doping Induced High Coercivity in Pr2Fe14B/α-Fe Nanocomposite Melt-spun Ribbons

open access: yesMedžiagotyra
The effect of niobium (Nb) doping on the microstructure and magnetic properties of as-spun Pr10Fe82.5-xB6.5Nbx ribbons was investigated. Nb doping significantly refines the grain size and enhances the coercivity, which increases from 380 kA/m (x = 0) to ...
Shuang FU   +3 more
doaj   +1 more source

Miniature Soft Robot With Magnetically Reprogrammable Surgical Functions

open access: yesAdvanced Materials, EarlyView.
Miniature soft robots have great prospects to revolutionize minimally invasive treatments. Here we present a miniature soft robot, which can be reprogrammed to perform five surgical functionalities with six‐degrees‐of‐freedom motions. This soft robot can prospectively make minimally invasive surgery considerably safer and painless, and enable ...
Chelsea Shan Xian Ng   +4 more
wiley   +1 more source

Optimal Control Drives Ultrafast and Energy‐Efficient Magnetization Switching in Van der Waals Magnets

open access: yesAdvanced Materials, EarlyView.
ABSTRACT The accelerating expansion of data‐centric technologies is sharply increasing the energy burden of information storage, placing unprecedented pressure on the efficiency of magnetic switching. Conventional field‐driven reversal, once the foundation of magnetic memory, has become impractical in modern architectures due to its high energy cost ...
Mohammad H. Badarneh   +2 more
wiley   +1 more source

Multiple solutions for semilinear elliptic boundary value problems at resonance

open access: yesElectronic Journal of Differential Equations, 1995
successful in proving the existence of weak solutions for semilinear elliptic boundary value problems at resonance. One technique involves a variational approach where solutions are characterized as saddle points for a related functional.
Steve B. Robinson
doaj  

Machine-learning-guided optimization of cobalt doping in Sm(Fe,Ti,V)12-based magnets

open access: yesScience and Technology of Advanced Materials
Partial substitution of Fe with Co in Sm(Fe,Co)12-based compounds is known to enhance saturation magnetization but often causes significant coercivity degradation.
Toni Subagja   +7 more
doaj   +1 more source

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