Results 101 to 110 of about 2,564,259 (289)

Spin‐State Manipulation of Atomic Manganese Center by Phosphide‐Support Interactions for Enhanced Oxygen Reduction

open access: yesAdvanced Materials, EarlyView.
The electronic configuration of Mn single‐atom sites is regulated from low‐spin to high‐spin states by embedding well‐defined molybdenum phosphide nanocrystals nearby (MoP@MnSAC‐NC). The electronic phosphide‐support interaction between MoP and Mn single atoms drives the electronic structure transition in Mn sites from low‐spin to high‐spin states, and ...
Zuyang Luo   +9 more
wiley   +1 more source

AI‐Driven Defect Engineering for Advanced Thermoelectric Materials

open access: yesAdvanced Materials, EarlyView.
This review presents how AI accelerates the design of defect‐tuned thermoelectric materials. By integrating machine learning with high‐throughput data and physics‐informed representations, it enables efficient prediction of thermoelectric performance from complex defect landscapes.
Chu‐Liang Fu   +9 more
wiley   +1 more source

Periodic rings with commuting nilpotents

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1984
Let R be a ring (not necessarily with identity) and let N denote the set of nilpotent elements of R. Suppose that (i) N is commutative, (ii) for every x in R, there exists a positive integer k=k(x) and a polynomial f(λ)=fx(λ) with integer coefficients ...
Hazar Abu-Khuzam, Adil Yaqub
doaj   +1 more source

Fatou’s identity and Lebesgue’s convergence theorem [PDF]

open access: yesProceedings of the American Mathematical Society, 1999
The classical Fatou lemma for bounded sequences of nonnegative integrable functions is represented as an equality. A similar result is stated for measure convergent sequences. Neither result requires a uniform integrability assumption. For the latter a converse is proven. Two extensions of Lebesgue's convergence theorem are presented.
openaire   +2 more sources

Enabling Additively Manufactured Electronics Through Laser Induced Graphene and Copper Deposition on Fully‐Aromatic Polyimides

open access: yesAdvanced Materials Technologies, EarlyView.
This article introduces a hybrid manufacturing approach to create conductive pathways in additively manufactured fully‐aromatic polyimides. This is enabled through a combination of high‐resolution laser scribing process for fabricating graphene and metallizing it with electrodeposition of copper to further increase conductivity.
Heather D. Wotton   +6 more
wiley   +1 more source

On the perfectness of C^{∞,s}-diffeomorphism groups on a foliated manifold [PDF]

open access: yesOpuscula Mathematica, 2008
The notion of \(C^{r,s}\) and \(C^{\infty,s}\)-diffeomorphisms is introduced. It is shown that the identity component of the group of leaf preserving \(C^{\infty,s}\)-diffeomorphisms with compact supports is perfect.
Jacek Lech
doaj  

The Nanosprouts Structural Inhomogeneity of Organic Semiconductors and the Optical Memory Properties

open access: yesAdvanced Materials Technologies, EarlyView.
A flexible nonvolatile organic optical memory transistor (OMT) array is demonstrated with simplified architecture, exhibiting integrated image recognition and storage functions. The organic semiconductors exhibit intrinsic memory properties arising from structural inhomogeneity.
Lizhi Yan   +6 more
wiley   +1 more source

A Unified Enhanced Quasi‐Electrostatic 3D Charge Model for Accurate Prediction and Design Optimization of Contact‒Separation Triboelectric Nanogenerators

open access: yesAdvanced Materials Technologies, EarlyView.
New theoretical model for vertical contact and separation mode triboelectric nanogenerator is proposed. Detailed derivation process and results are discussed. Numerical solutions and parametric studies are presented. Calculated results are validated by experimental outcomes.
Seokjin Kim   +2 more
wiley   +1 more source

A Switchable and Rotatable Chiral Nematic Liquid Crystal Diffraction Grating for Beam‐Steering Technology

open access: yesAdvanced Optical Materials, EarlyView.
A switchable and rotatable chiral nematic liquid crystal diffraction grating is demonstrated, driven by low voltages at room temperature. Incorporation of the dimer CB7CB induces an asymmetric tilt via the flexoelectro‐optic effect, generating torque that enables uniform 360° in‐plane rotation of both the grating and its far‐field diffraction pattern ...
Qihao Han   +4 more
wiley   +1 more source

Generalized Picone's identity and its applications

open access: yesElectronic Journal of Differential Equations, 2013
In this article we give a generalized version of Picone's identity in a nonlinear setting for the p-Laplace operator. As applications we give a Sturmian Comparison principle and a Liouville type theorem.
Kaushik Bal
doaj  

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