scholarly journals Simple and Efficient Computational Method to Analyze Cylindrical Plasmonic Nanoantennas

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Karlo Costa ◽  
Victor Dmitriev
Keyword(s):  
Integral Equation ◽  
Electric Field ◽  
Method Of Moments ◽  
Surface Impedance ◽  
Near Infrared ◽  
Basis Functions ◽  
Computational Method ◽  
Good Precision ◽  
Cylindrical Structures ◽  
Plasmonic Nanoantennas

We present in this work a simple and efficient technique to analyze cylindrical plasmonic nanoantennas. In this method, we take into account only longitudinal current inside cylindrical structures and use 1D integral equation for the electric field with a given surface impedance of metal. The solution of this integral equation is obtained by the Method of Moments with sinusoidal basis functions. Some examples of calculations of nanoantennas with different geometries and sources are presented and compared with the commercial software Comsol 3D simulations. The results show that the proposed technique provides a good precision in the near-infrared and lower optical frequencies 100–400 THz.

scholarly journals Towards a Spectral Method of Moments using Computer Aided Design

2019 ◽  
Vol 17 ◽  
pp. 59-63
Author(s):  
Stefan Kurz ◽  
Sebastian Schöps ◽  
Felix Wolf
Keyword(s):  
Electric Field ◽  
Spectral Method ◽  
Method Of Moments ◽  
Computer Aided Design ◽  
Exterior Domain ◽  
Basis Functions ◽  
Boundary Element Methods ◽  
Numerical Examples ◽  
Computer Aided ◽  
Aided Design

Abstract. We present first numerical examples of how the framework of isogeometric boundary element methods, in the context of electromagnetism also known as method of moments, can be used to achieve higher accuracies by elevation of the degree of basis functions. Our numerical examples demonstrate the computation of the electric field in the exterior domain.

A Comparison of Error Estimators for Method of Moments

2020 ◽  
Vol 35 (11) ◽  
pp. 1406-1407
Author(s):  
Charles Braddock ◽  
Andrew Peterson
Keyword(s):  
Integral Equation ◽  
Electric Field ◽  
Method Of Moments ◽  
Numerical Solutions ◽  
Three Dimensional ◽  
Correlation Coefficients ◽  
Local Error ◽  
Electric Field Integral Equation ◽  
Error Estimators ◽  
Field Integral

Local error estimators are investigated for use with numerical solutions of the electric field integral equation. Three-dimensional test targets include a sphere, disk, NASA almond, and a Lockheed Martin Expedite aircraft model. Visual plots and correlation coefficients are used to assess the accuracy of the estimators. It is shown that the inexpensive discontinuity estimators are usually as accurate as the residual method.

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