Results 41 to 50 of about 3,078 (202)

Propagation dynamics of an influenza transmission model with nonlocal dispersal

AIMS Mathematics
This paper investigated the existence and nonexistence of traveling wave solutions for a nonlocal dispersal influenza transmission model with human mobility.
Xuerui Li, Boyi Wang, Yuanyuan Wu
doaj   +1 more source

Traveling waves in nonlocal dispersal SIR epidemic model with nonlinear incidence and distributed latent delay

Advances in Difference Equations, 2020
This paper studies the traveling waves in a nonlocal dispersal SIR epidemic model with nonlinear incidence and distributed latent delay. It is found that the traveling waves connecting the disease-free equilibrium with endemic equilibrium are determined ...
Weixin Wu, Zhidong Teng
doaj   +1 more source

On the definition and the properties of the principal eigenvalue of some nonlocal operators

, 2016
In this article we study some spectral properties of the linear operator $\mathcal{L}\_{\Omega}+a$ defined on the space $C(\bar\Omega)$ by :$$ \mathcal{L}\_{\Omega}[\varphi] +a\varphi:=\int\_{\Omega}K(x,y)\varphi(y)\,dy+a(x)\varphi(x)$$ where $\Omega ...
Berestycki, Henri, Coville, Jérôme, Vo, Hoang-Hung   +2 more
core   +2 more sources

Coherent Structures in Nonlocal Dispersive Active-Dissipative Systems [PDF]

SIAM Journal on Applied Mathematics, 2015
The authors study coherent structures in nonlocal dispersive equations with instabilities (energy production) or stabilities (energy dissipation). They consider the Kuramoto--Sivashinsky equation with additional nonlocal term and analyze the efffect of nonlocal terms on coherent structures. As the Shilnikov-type approach is not applicable, they develop
Lin, Te-Sheng, Pradas, Marc, Kalliadasis, Serafim, Papageorgiou, Demetrios T., Tseluiko, Dmitri   +4 more
openaire   +5 more sources

Dispersion engineering via nonlocal transformation optics

Optica, 2015
Transformation optics (TO) is one of the most powerful and versatile frameworks for the systematic design of artificial media. Recently (G. Castaldi et al., Phys. Rev. Lett., 108, 063902, 2012), we have proposed an extension of this approach that enables the manipulation and control of nonlocal light-matter interactions, which are becoming increasingly
Andrea Alù, Giuseppe Castaldi, Nader Engheta, Massimo Moccia, Vincenzo Galdi   +4 more
openaire   +2 more sources

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

Advanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu, Varun Shah, Rodion Vladimirovich Belosludov, Mohammad Saeed Bahramy   +3 more
wiley   +1 more source

Global dynamics of population-toxicant models with nonlocal dispersals

Advances in Nonlinear Analysis
In the article, we first investigate a population-toxicant model with nonlocal dispersal. Compared to the local dispersal (random dispersal), nonlocal dispersal brings some difficulties.
Ma Li, Tang De
doaj   +1 more source

Existence and Uniqueness of Solutions to a Nonlocal Equation with Monostable Nonlinearity

, 2011
Let $J \in C(\mathbb{R})$, $J\ge 0$, $\int_{\tiny$\mathbb{R}$} J = 1$ and consider the nonlocal diffusion operator $\mathcal{M}[u] = J \star u - u$. We study the equation $\mathcal{M} u + f(x,u) = 0$, $u \ge 0$, in $\mathbb{R}$, where $f$ is a KPP-type ...
Juan Dávila, Jérôme Coville, Kanel Y. I., Salomé Martínez, Schumacher K.   +4 more
core   +1 more source

Three‐dimensional Antimony Sulfide Based Flat Optics

Advanced Functional Materials, EarlyView.
This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang, Uwe Hübner, Anne Gärtner, Tao Chen, Joseph Köbel, Franka Jahn, Daniel Repp, Abhrodeep Dey, Henrik Schneidwind, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Matthias Zeisberger, Tanveer Ahmed Shaik, Astrid Bingel, Markus A. Schmidt, Jer‐Shing Huang, Ulf Peschel, Volker Deckert   +18 more
wiley   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source