Dispersive Materials

Plasmonic Nano Antennas Simulation with CST MICROWAVE STUDIO®

This paper is based on: "Comparison of electromagnetic field solvers for the 3D analysis of plasmonic nano antennas" by Johannes Hoffmann, Christian Hafner, Patrick Leidenberger, Jan Hesselbarth, Sven Burger, Proc. SPIE Vol. 7390, pp. 73900J-73900J-11. The Field Distribution inside a 1 nm wide gap between two 80 nm diameter Gold spheres is calculated and compared to a semi analytical reference solution published in the paper. Both general purpose solvers of CST MICROWAVE STUDIO® are used. The simulation results agree closely with the reference solution. Read full article..

Left-Handed Wave Propagation of a Coplanar Waveguide based on Split Ring Resonators

Metamaterials are a new class of man-made materials that can be engineered to respond to electromagntec fields in unconventional ways. The response of a material to an EM field is described by permittivity and can be tuned in meta-materials to assume negative values. This means that the material can reverse the phase of propagating waves and are commonly referred to as left-handed materials (LHM). A famous concept of LHM -the Split Ring Resonator (SRR) consists of periodic metallic structures controlling EM-properties on a macroscopic scale. The model presented here consists of a coplanar waveguide (CPW) periodically coupled to SRRs forming a bandpass behaviour. Read full article..

Investigation of Backward Wave Propagation on LHM Split Ring Resonators (SRRs)

This article demonstrates that a dense array of Split Ring Resonator (SRR) can be considered as a gyrotropic bianisotropic media with magneto-electric coupling effects. The simulation of such SRRs with CST MICROWAVE STUDIO® demonstrates the propagation of a backward wave component in a certain frequency range where the structure behaves as a medium with a negative refractive index. Read full article..

Modeling Double Negative Materials with CST DESIGN STUDIO™

This paper describes how Double Negative Materials (DNG) material can be simulated in CST MICROWAVE STUDIO® (CST MWS) by using dispersive materials. Read full article..

Electromagnetic Field Simulation of Nanometric Optical Tweezers.

This paper shows how the frequency domain solver of CST MICROWAVE STUDIO® (CST MWS) can be used to calculate the near field distribution of metallic and dielectric objects at optical frequencies. This web paper is based on the publication “Theory of Nanometric Optical Tweezers” by Lukas Novotny, Randy X. Bian, and X. Sunney Xie, Physical Review Letters, Volume 79, No. 4, 28 July 1997. Read full article..

Ferrite-loaded waveguide antenna

The behaviour of a ferrite loaded waveguide antenna is predicted first by a 2D-analytical model and second by CST MICROWAVE STUDIO®. The results of the predictions are compared with measurements. (Courtesy and permission of KAIST Korea.) Read full article..

HUGO Human Body Model

This article demonstrates the capabilities for importing the HUGO dataset via the CST STUDIO SUITE™ Voxel Data Interface. Read full article..

Microwave Plasma Sources

Optimisation of Microwave Plasma Sources with the transient, frequency domain and eigenmode solvers of MAFIA. Read full article..