They enable high-speed simulations of one to two billion mesh cells using CST’s Transient Solver (exact model size depends upon the particulars of the materials).
#Cst microwave studio plasmonics professional#
These systems are 4U rackmount servers supporting up to eight NVIDIA Quadro or Tesla V100 GPUs (along with additional slots for networking, storage connectivity and professional Quadro graphics). Microway’s NumberSmasher® GPU-accelerated servers provide a pre-configured platform for CST STUDIO SUITE. The log scale in the y axis in (b) is chosen so as to reveal more clearly the contribution of the quadrupole terms as well.Improve Simulation Times on Large Electronic Structures with Tesla GPUs, CST STUDIO SUITE, and Microway It is obtained by coherent (amplitude and phase) summation of all multipole contributions. The gray curve marked “All multipoles” gives the normalized total power scattered by the multipoles and corresponds to the reflection of the metamaterial slab, shown by the dashed black curve in (a). (b) Contributions of the six strongest multipolar excitations to the reflection of the metamaterial array. The dotted curves are obtained based on the multipole decomposition missing the toroidal multipoles. The dashed curves are obtained based on the multipole decomposition of the displacement current data, which includes both the standard multipole terms (up to the magnetic octupole) and toroidal multipoles (up to the toroidal quadrupole). Solid curves correspond to the results of the CST Microwave Studio simulations. (a) Transmission T (red lines) and reflection R (black lines) spectra calculated for the metamaterial slab composed of four-cylinder clusters periodically placed along the x axis, as shown in Fig. Owing to the unique topology of the toroidal excitation, toroidal metamaterials may be employed as a platform for terahertz sensing or enhancement of light absorption and excitation of nonlinearities and as components for testing of the Aharonov-Bohn effect. We conduct a theoretical investigation of the properties of such metamaterials we find that not accounting for the toroidal dipole moment results in unphysical transmissions above 100%. The toroidal response forms from the poloidal displacement currents circulating in each cylinder. Near-field coupling occurs among the cylinders, which are separated by less than their radius. These cylinders form the basic building blocks (metamolecules) of the proposed toroidal dielectric metamaterial. We also propose a novel class of all-dielectric metamaterials that exhibit an almost lossless resonant toroidal dipolar response in the terahertz part of the spectrum.Ī novel, low-loss, dielectric metamaterial exhibiting toroidal dipolar response can be obtained via a periodic arrangement of clusters formed by four high-index LiTaO 3 dielectric cylinders with dimensions measured in micrometers.
#Cst microwave studio plasmonics how to#
We show how to eliminate Ohmic loss, one of the major drawbacks of existing toroidal metamaterials. Only recently have advances in metamaterial research enabled the observation of such excitations in specially engineered artificial metamaterials (toroidal metamaterials) composed of properly arranged metallic resonators. Although the importance of toroidal excitations has already been recognized in particle, atomic, and solid-state physics, these excitations are extremely weak and typically remain unnoticed in the frame of classical electrodynamics. A toroidal dipole is a rare yet fundamental electromagnetic excitation produced by electrical currents that circulate in space as if they were moving on the surface of a torus along its meridians.
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