In this article we present and test a model for large microring resonators based on implementation of the bidirectional Eigenmode Expansion Method for rigorous modelling of vectorial field propagation in the coupling region and using accurate solutions for the bend mode propagating in the ring.

Abstract I review the four mechanisms of bound states in continuum (BICs) application microwave and acoustic cavities open to directional waveguides. The most simple are symmetry-protected BICs, which localized inside cavity because orthogonality eigenmodes propagating modes However, general interesting is Friedrich–Wintgen mechanism, when BICs result fully destructive interference outgoing res...

Zero{lag synchrony arises between two points on the cerebral cortex when these receive concurrent independent inputs and has generally been ascribed to nonlinear mechanisms. We report results obtained by Principal Component Analysis (PCA) applied to simulations of cerebral cortex which exhibit zero{lag synchrony and realistic spectral content, and show that synchrony can arise by distinct and s...

The role of turbulence in current generation and self-excitation of magnetic fields has been studied in the geometry of a mechanically driven, spherical dynamo experiment, using a three-dimensional numerical computation. A simple impeller model drives a flow that can generate a growing magnetic field, depending on the magnetic Reynolds number Rm=micro0sigmaVa and the fluid Reynolds number Re=Va...

Abstract Bimodal atomic force microscopy (AFM) uses two eigenfrequencies to map nanomechanical properties with high spatial and temporal resolution. To reliably surface understand the links between experimental observables, energy dissipation, viscoelastic considering effects of nonconservative interaction forces is essential. avoid damaging sample, maximum tip indentation into sample needs be ...

This experiment illustrates the spatiotemporal pattern of the fluctuations that spontaneously develop in a magnetized temperature filament whose transverse scale is comparable to the electron skin depth. A high-frequency mode exhibits a striking spiral structure and is identified as a drift-Alfven eigenmode. A low-frequency mode is found to be localized near the center of the filament. It is do...

Frequency-chirped free-electron lasers (FELs) are useful to generate a large photon bandwidth or a shorter xray pulse duration. In this paper, we present a threedimensional analysis of a high-gain FEL driven by the energy-chirped electron beam. We show that the FEL eigenmode equation is the same for a frequency-chirped FEL as for an undulator-tapered FEL. We study the transverse effects of such...

We describe the Bayesian-based signal-to-noise eigenmode method for cosmological parameter estimation, show how it can be used to optimally compress large CMB anisotropy data sets to manageable sizes, and apply it to the DMR 4-year, South Pole and Saskatchewan data, individually and in combination. A simple prior probability method is used to include large scale structure observations. Estimate...

We examine resonantly damped kink modes in straight coronal slabs, paying special attention to the effects of formulation for transverse density distribution ("profile"). work framework pressure-less, gravity-free, resistive magnetohydrodynamics, and we adopt dissipative-eigenmode perspective. The profile is restricted be one-dimensional, but nonetheless allowed take a generic form characterize...