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This paper presents an analytical framework for the analysis of time-varying metal-based metamaterials. Concretely, we particularize the study to time-modulated metal-air interfaces embedded between two different semi-infinite media that…

In this paper, we develop a physics-based model that allows a scalable optimization of large intelligent reflecting surfaces (IRSs). The basic idea is to partition the IRS unit cells into several subsets, referred to as tiles, and model the…

信号处理 · 电气工程与系统科学 2020-06-09 Marzieh Najafi , Vahid Jamali , Robert Schober , Vincent H. Poor

We have investigated that the Goos-H\"anchen (GH) shifts in frustrated total internal reflection (FTIR) studied with wave packet propagation. In the first-order approximation of the transmission coefficient, the GH shift is exactly the…

光学 · 物理学 2009-08-26 Xi Chen , Chun-Fang Li , Rong-Rong Wei , Yan Zhang

We inspect the optical properties of dissipative double-negative metamaterials (DNMM) and find explicit expression for the total reflection angle and the correct Fresnel formulae describing the reflection and refraction for the DNMM at the…

光学 · 物理学 2020-12-02 Igor Tralle , Levan Chotorlishvili , Paweł Ziȩba

This work outlines a new multi-physics-compatible immersed rigid body method for Eulerian finite-volume simulations. To achieve this, rigid bodies are represented as a diffuse scalar field and an interface seeding method is employed to…

计算物理 · 物理学 2022-03-15 Tim Wallis , Philip Barton , Nikolaos Nikiforakis

We show that the interface effect on the properties of composite media recently proposed by Torquato and Rintoul (TR) [Phys. Rev. Lett. 75, 4067 (1995)] is in fact elementary, and follows directly from taking the limit in the dipolar…

凝聚态物理 · 物理学 2009-10-28 Liang Fu , Lorenzo Resca

Interfaces in materials are often treated as massless geometric boundaries, and many kinetic models adopt an overdamped assumption. In this Letter, we show that grain boundaries exhibit inertial behavior under high-frequency oscillatory…

材料科学 · 物理学 2025-12-03 Xinyuan Song , Chuang Deng

The propagation of damage in a confined magnetic Ising film, with short range competing magnetic fields ($h$) acting at opposite walls, is studied by means of Monte Carlo simulations. Due to the presence of the fields, the film undergoes a…

统计力学 · 物理学 2009-11-13 M. Leticia Rubio Puzzo , Ezequiel V. Albano

Highly overmoded and periodically loaded structures, such as the iris-line waveguide, offer an attractive solution for the efficient transportation of diffraction-prone THz pulses over long distances (hundreds of meters). This paper…

加速器物理 · 物理学 2025-12-16 Adham Naji , Pawan Kumar Gupta , Gennady Stupakov

We study the motion of phase interfaces in a diffusive lattice equation with bistable nonlinearity and derive a free boundary problem with hysteresis to describe the macroscopic evolution in the parabolic scaling limit. The first part of…

偏微分方程分析 · 数学 2015-03-03 Michael Helmers , Michael Herrmann

Refraction at a smooth interface is accompanied by momentum transfer normal to the interface. We show that corrugating an initially smooth, totally reflecting, non-metallic interface provides a momentum kick parallel to the surface, which…

其他凝聚态物理 · 物理学 2009-11-13 W. T. Lu , Y. J. Huang , P. Vodo , R. K. Banyal , C. H. Perry , S. Sridhar

When an excited electromagnetically open optical waveguide goes through a temporal transition of its material properties, it radiates to the ambient surroundings. In this letter, we explore this radiation and reveal, using asymptotic…

光学 · 物理学 2024-09-19 Amir Shlivinski , Yakir Hadad

It is shown that, by theoretical and experimental results, a universal zero-impedance condition exists for two kinds of localized interface modes in the whole momentum space (both above and below the light line). It can be applied at the…

光学 · 物理学 2008-01-29 J. W. Dong , J. Zeng , Q. F. Dai , H. Z. Wang

Impulsive encounters between astrophysical objects are usually treated using the distant tide approximation (DTA) for which the impact parameter, $b$, is assumed to be significantly larger than the characteristic radii of the subject,…

星系天体物理 · 物理学 2021-12-14 Uddipan Banik , Frank C. van den Bosch

Thermo- and photo- acoustic tomography require reconstructing initial acoustic pressure in a body from time series of pressure measured on a surface surrounding the body. For the classical case of free space wave propagation, various…

偏微分方程分析 · 数学 2015-06-23 B. Holman , L. Kunyansky

A clear understanding and proper control of interfacial thermal transport is important in nanoscale device. In this review, we first discuss the theoretical methods to handle the interfacial thermal transport problem, such as the…

介观与纳米尺度物理 · 物理学 2018-04-18 Hangbo Zhou , Gang Zhang

We consider the case of a deformable material interface between two immiscible moving media, both of them being magnetiable. The time dependence of the metric at the interface introduces a non linear term, proportional to the mean…

流体动力学 · 物理学 2015-05-14 Q. Vanhaelen , M. Hennenberg , S. Slavtchev , B. Weyssow

It's well-known that in a traditional discrete-time autonomous linear systems, the eigenvalues of the weigth (system) matrix solely determine the stability of the system. If the spectral radius of the system matrix is larger than 1, then…

数据分析、统计与概率 · 物理学 2009-03-18 Zekeriya Uykan

We consider the critical behavior at an interface which separates two semi-infinite subsystems belonging to different universality classes, thus having different set of critical exponents, but having a common transition temperature. We…

统计力学 · 物理学 2007-05-23 F. A. Bagamery , L. Turban , F. Igloi

We propose a novel approach to achieve physical layer security for integrated sensing and communication (ISAC) systems operating in the presence of targets that may be eavesdroppers. The system is aided by a time-modulated intelligent…

信号处理 · 电气工程与系统科学 2026-01-01 Zhihao Tao , Athina Petropulu , H. Vincent Poor