Abstract
Metamaterials composed of artificial subwavelength structures exhibit extraordinary properties that cannot be found in nature. Designing artificial structures having exceptional properties plays a pivotal role in current metamaterial research. We present a new numerical simulation scheme for metamaterial research. The scheme is based on a graphic processing unit (GPU)-accelerated finite-difference time-domain (FDTD) method. The FDTD computation can be significantly accelerated when GPUs are used instead of only central processing units (CPUs). We explain how the fast FDTD simulation of large-scale metamaterials can be achieved through communication optimization in a heterogeneous CPU/GPU-based computer cluster. Our method also includes various advanced FDTD techniques: the non-uniform grid technique, the total-field/scattered-field (TFSF) technique, the auxiliary field technique for dispersive materials, the running discrete Fourier transform, and the complex structure setting. We demonstrate the power of our new FDTD simulation scheme by simulating the negative refraction of light in a coaxial waveguide metamaterial.
Original language | English |
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Pages (from-to) | 2026-2032 |
Number of pages | 7 |
Journal | Journal of the Korean Physical Society |
Volume | 67 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2015 Dec 1 |
Bibliographical note
Funding Information:This study has been supported through the Grant CARNAMAG No. ANR 2010 JCJC 10031, and partially through the Grant NEXT No. ANR-10-LABX-0037 in the framework of the ? Programme des Investissements d?Avenir?. Financial support have also been received from the University of Toulouse, and R?gion Midi-Pyr?n?es in France. The TEM imaging was performed in the TEMSCAN platform at the University of Toulouse and the SEM imaging was carried out within the RENATECH platform of the LAAS-CNRS in Toulouse.
Publisher Copyright:
© 2015, The Korean Physical Society.
Keywords
- Electromagnetic simulations
- FDTD
- GPU
- Metamaterials
ASJC Scopus subject areas
- General Physics and Astronomy