Results 61 to 70 of about 6,302 (292)

Bound States in the Continuum in Metasurface Absorbers: A Comparison with Metasurfaces

Advanced Photonics Research, EarlyView.
Bound states in the continuum (BICs) offer a powerful mechanism for enhancing light–matter interactions. This work systematically investigates the radiation characteristics of BICs under both transmission and reflection configurations using multipolar analysis.
Guizhen Xu, Zhanqiang Xue, Jiang Du, Longqing Cong   +3 more
wiley   +1 more source

Exact solution of the relationship between the eigenvalue discreteness and the behavior of eigenstates in Su–Schrieffer–Heeger lattices

New Journal of Physics
The interplay between eigenvalue discreteness and eigenstate localization is a fundamental characteristic of one-dimensional Su–Schrieffer–Heeger (SSH) lattices.
Huitong Wei, Xiumei Wang, Xingping Zhou
doaj   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Second Order Eigensensitivities of Singularly Perturbed Systems

Journal of King Saud University: Engineering Sciences, 1994
In this paper, second order eigenvalue sensitivities are derived with respect to the singular perturbation parameter whose variation changes the reduced system order.
Zaglol S. Elrazaz, Awadh A. Al-Digs
doaj   +1 more source

Perturbation formula of eigenvalues in a singularly perturbed domain

Journal of the Mathematical Society of Japan, 1993
The author deals with partial degeneration of a domain (the Dumbbell shaped domain) and an asymptotic behavior of a certain class of eigenvalues of the Laplacian with Neumann boundary conditions. For small \(\zeta>0\), the domain \(\Omega(\zeta)\) is expressed as follows \(\Omega(\zeta)=D_ 1\cup D_ 2\cup Q(\zeta)\subset\mathbb{R}^ n\) where \(Q(\zeta)\)
openaire   +4 more sources

Perturbation thèorems for the generalized eigenvalue problem

Linear Algebra and its Applications, 1982
AbstractGiven a matrix pair Z = (A, B), the perturbation of its eigenvalues (α, β) is studied. Considering two pairs Z, W as points of the Grassman manifold Gn, 2n and its eigenvalues as points in G1, 2, the projective complex plane, the distance of the spectra, measured in the chordal metric in G1, 2, is bounded by some distance of the matrix pairs in
Elsner, Ludwig, Sun, Ji-Guang
openaire   +4 more sources

First‐Principles Investigation of the T‐ and M‐Centers in Silicon Using Meta‐GGA Functionals

Advanced Theory and Simulations, EarlyView.
The relaxed structure for (a) T‐center and (b) M‐center. The calculations on the T‐center demonstrate excellent agreement with the HSE06, reinforcing the efficiency of meta‐GGA approaches for accurate defect characterization in Si. The M‐center is introduced, revealing promising quantum optical properties.
Petros‐Panagis Filippatos, Navaratnarajah Kuganathan, Alexander Chroneos   +2 more
wiley   +1 more source

Utilizing Causal Network Markers to Identify Tipping Points ahead of Critical Transition

Advanced Science, EarlyView.
The study proposes a causal network markers (CNMs) framework to identify early‐warning signals preceding critical transitions. It validates CNMs on various computational benchmark models and real‐world datasets, demonstrating higher accuracy and flexibility compared to existing approaches.
Shirui Bian, Zezhou Wang, Siyang Leng, Wei Lin, Jifan Shi   +4 more
wiley   +1 more source

Perturbations of embedded eigenvalues for the planar bilaplacian

Journal of Functional Analysis, 2011
Operators on unbounded domains may acquire eigenvalues that are embedded in the essential spectrum. Determining the fate of these embedded eigenvalues under small perturbations of the underlying operator is a challenging task, and the persistence properties of such eigenvalues is linked intimately to the multiplicity of the essential spectrum.
Derks, G, Maad Sasane, S, Sandstede, B
openaire   +5 more sources

Phase‐Space Generalized Brillouin Zone For Spatially Inhomogeneous Non‐Hermitian Systems

Advanced Science, EarlyView.
A novel phase‐space generalized Brillouin zone (GBZ) framework to devised captures the interplay of spatial inhomogeneity and non‐local non‐Hermitian effects. This reveals new degrees of freedom such as jumps in the bifurcated GBZ, as well as new routes for topological protection, with potential applications in characterizing inhomogeneous or ...
Qingya Li, Hui Jiang, Ching Hua Lee
wiley   +1 more source