Results 131 to 140 of about 420,318 (376)

Electrically Tunable Momentum Space Polarization Singularities in Liquid Crystal Microcavities

open access: yesAdvanced Science, EarlyView.
Using a highly birefringent material embedded in a liquid crystal microcavity, the Rashba‐Dresselhaus resonance is obtained. In this regime, polarization singularities, known as C‐points, are observed in momentum space. The positions of these singularities can be modified by applying an external voltage to the sample.
Przemysław Oliwa   +12 more
wiley   +1 more source

The asymptotic behavior of the solutions of degenerate parabolic equations [PDF]

open access: bronze, 1987
Catherine Bandle   +2 more
openalex   +1 more source

Parametrix for a degenerate parabolic equation [PDF]

open access: yesProceedings of the Japan Academy, Series A, Mathematical Sciences, 1979
Iwasaki, Chisato, Iwasaki, Nobuhisa
openaire   +2 more sources

Energy Dispersion Induced Precisely Tunable Friction of Graphitic Interface

open access: yesAdvanced Science, EarlyView.
This study introduces a novel approach to precisely tune nanoscale friction on monolayer graphene using coupled DC/AC electric fields. Combining experiments (contact‐mode electrostatic force microscopy) and simulations (generalized Prandtl–Tomlinson model), vertical resonance is shown to disperse horizontal energy, reducing friction while preserving ...
Zhao Liu   +6 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  

Advanced Temperature Design for Dynamic Performance Enhancement of PEMFCs Under High Current Density (HCD)

open access: yesAdvanced Science, EarlyView.
This study presents an innovative temperature difference (TD) design with an in‐plane gradient to optimize cooling channels in proton exchange membrane fuel cells (PEMFCs) under high current density (HCD) loading. The positive temperature difference (PTD) design improves dynamic response by enhancing hydration upstream and mitigating flooding ...
Fengyang Cai   +3 more
wiley   +1 more source

Asymptotic stability and blow-up of solutions for semi-linear edge-degenerate parabolic equations with singular potentials

open access: yes, 2015
This article studies the initial boundary value problem for a class of semilinear edge-degenerate parabolic equations with singular potential term. By introducing a family of potential wells, we derive a threshold of the existence of global solutions ...
Hua Chen, Nian Liu
semanticscholar   +1 more source

Inverse Design of Active‐Source Metamaterials for Thermal Camouflage with Arbitrary Active Sources

open access: yesAdvanced Science, EarlyView.
Active‐source metamaterials (ASM) revolutionize thermal camouflage by enabling the precise manipulation of heat signatures, transforming any active source into a desired thermal pattern. This breakthrough technology holds immense potential for infrared stealth, advanced thermal management, and energy‐efficient architecture, offering unprecedented ...
Xianrong Cao   +9 more
wiley   +1 more source

Hybrid Solar Spectral‐Splitting Photovoltaic‐Thermal Hydrogen Production Systems

open access: yesAdvanced Science, EarlyView.
A hybrid solar photovoltaic‐thermal hydrogen system with membrane‐less electrolysis significantly boosts solar‐to‐hydrogen efficiency by co‐using thermal and electrical energy. The system attains good performance under variable irradiance with direct current power converters.
Yu Tian   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy