Results 111 to 120 of about 40,571 (332)

Observation of Localized Resonant Phonon Polaritons in Biaxial α‐MoO3 Nanoparticles

open access: yesAdvanced Science, EarlyView.
Biaxial α‐MoO3 nanoparticles exhibit tunable, high‐Q mid‐infrared resonances driven by localized phonon polaritons. Combining a novel synthesis method, hyperspectral near‐field imaging and a unified theoretical analysis, this work reveals eigenmodes and resonance conditions in biaxial particles.
Daniel Beitner   +7 more
wiley   +1 more source

A multiplicity result for a class of quasilinear elliptic and parabolic problems

open access: yesElectronic Journal of Differential Equations, 1997
We prove the existence of infinitely many solutions for a class of quasilinear elliptic and parabolic equations, subject respectively to Dirichlet and Dirichlet-periodic boundary conditions.
M. R. Grossinho, Pierpaolo Omari
doaj  

Hölder gradient estimates for a class of singular or degenerate parabolic equations

open access: yesAdvances in Nonlinear Analysis, 2017
We prove interior Hölder estimates for the spatial gradients of the viscosity solutions to the singular or degenerate parabolic ...
Imbert Cyril   +2 more
doaj   +1 more source

A Resistive Soft Robotic Exosuit for Dynamic Body Loading in Hypogravity

open access: yesAdvanced Science, EarlyView.
The resistive hypogravity exosuit is a lightweight wearable robotic exosuit that uses pneumatic artificial muscles to restore Earth‐like metabolic and muscular demands during locomotion in low gravity. Tested on healthy subjects in Earth and simulated Moon gravity, the suit restores energy expenditure and muscle activation without altering gait ...
Emanuele Pulvirenti   +6 more
wiley   +1 more source

Catalytic Electron‐Driven Non‐Equilibrium Phase Transition in Quantum Electronic Heterostructures

open access: yesAdvanced Science, EarlyView.
This study proposes an innovative method to control the phase of heterostructured materials via electron flow manipulation. Leveraging this technique, a new topological phase is achieved that hosts excitons at the interface of a topological insulator.
Byung Cheol Park   +5 more
wiley   +1 more source

Revealing a Pathway for Low‐Temperature Recrystallization in Germanium

open access: yesAdvanced Science, EarlyView.
This study reports the discovery that energy transferred to electrons and atoms by highly ionizing ions results in a disorder‐order (amorphous‐crystalline) phase transformation in noncrystalline (amorphous) Ge. This discovery unlocks low‐temperature recrystallization pathways in Ge, offering a nonthermal strategy for fabricating Ge‐based devices that ...
Gihan Velişa   +8 more
wiley   +1 more source

Medium‐Entropy Engineering Enhances Na⁺/Electron Transport in Na3Fe0.1Mn0.2Co0.2Ni0.3V1.2(PO4)2F3@CNTs Cathode for Sodium‐Ion Batteries

open access: yesAdvanced Science, EarlyView.
This study proposes a medium‐entropy strategy to enhance sodium vanadium fluorophosphate cathodes. The designed Na3Fe0.1Mn0.2Co0.2Ni0.3V1.2(PO4)2F3@CNTs composite enhances structural stability and charge transport. Entropy‐induced distortion and carbon nanotubes (CNTs) synergistically improve Na⁺/electron kinetics. In situ XRD reveals a reversible dual‐
Ju Yang   +7 more
wiley   +1 more source

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