Modified Combined Tangential Formulation for Stable and Accurate Analysis of Plasmonic Structures

Authors

  • Barışcan Karaosmanoğlu Department of Electrical and Electronics Engineering Middle East Technical University, Ankara, Turkey
  • Özgür Ergül Department of Electrical and Electronics Engineering Middle East Technical University, Ankara, Turkey

Keywords:

Plasmonic problems, scattering, surface integral equations

Abstract

We consider a modified combined tangential formulation (MCTF) for stable and accurate analysis of plasmonic problems involving metallic objects modeled as penetrable bodies. For a wide range of negative real permittivity values, corresponding to varying characteristics of metals at THz, infrared, and visible frequencies, MCTF provides accurate solutions in comparison to the conventional formulations for penetrable objects. We further show that, for structures with subwavelength dimensions, penetrable models formulated with MCTF can be essential for accurate analysis, rather than the perfectly conducting formulations, even at the lower THz frequencies.

Downloads

Download data is not yet available.

References

P. B. Johnson and R. W. Christy, “Optical constants of the noble metals,” Phys. Rev. B, vol. 6, no. 12, pp. 4370-4379, Dec. 1972.

M. G. Araujo, et al., “Comparison of surface integral equation formulations for electromagnetic analysis of plasmonic nanoscatterers,” Opt. Exp., vol. 20, no. 8, pp. 9161-9171, Apr. 2012.

Ö. Ergül, “Analysis of composite nanoparticles with surface integral equations and the multilevel fast multipole algorithm,” J. Opt., vol. 14, no. 6, pp. 062701-1-4, June 2012.

D. M. Solis, J. M. Taboada, and F. Obelleiro, “Surface integral equation method of moments with multiregion basis functions applied to plasmonics,” IEEE Trans. Antennas Propag., vol. 63, no. 5, pp. 2141-2152, May 2015.

H. Gomez-Sousa, O. Rubinos-Lopez, and J. A. Martinez-Lorenzo, “Comparison of iterative solvers for electromagnetic analysis of plasmonic nanostructures using multiple surface integral equation formulations,” J. Electromagn. Waves Appl., vol. 30, no. 4, Feb. 2016.

P. Ylä-Oijala, M. Taskinen, and S. Järvenpää, “Surface integral equation formulations for solving electromagnetic scattering problems with iterative methods,” Radio Sci., vol. 40, no. 6002, Dec. 2005.

B. Karaosmanoğlu, A. Yılmaz, and Ö. Ergül, “On the accuracy and efficiency of surface formulations in fast analysis of plasmonic structures via MLFMA,” in Proc. Progress in Electromagnetics Research Symp. (PIERS), pp. 2629-2633, 2016.

B. Karaosmanoğlu and Ö. Ergül, “Accuracy of the surface integral-equation formulations for large negative permittivity values,” in Proc. Progress in Electromagnetics Research Symp. (PIERS), 2017.

Ö. Ergül and L. Gürel, “Comparison of integralequation formulations for the fast and accurate solution of scattering problems involving dielectric objects with the multi-level fast multipole algorithm,” IEEE Trans. Antennas Propag., vol. 57, no. 1, pp. 176-187, Jan. 2009.

B. Karaosmanoğlu, A. Yılmaz, and Ö. Ergül, “Accurate and efficient analysis of plasmonic structures using surface integral equations,” IEEE Trans. Antennas Propag., vol. 65, no. 6, pp. 3049- 3057, June 2017.

Downloads

Published

2019-05-01

How to Cite

Barışcan Karaosmanoğlu, & Özgür Ergül. (2019). Modified Combined Tangential Formulation for Stable and Accurate Analysis of Plasmonic Structures. The Applied Computational Electromagnetics Society Journal (ACES), 34(05), 811–814. Retrieved from https://journals.riverpublishers.com/index.php/ACES/article/view/8503

Issue

Section

Articles