Parallel FDTD simulations on optical and acoustic metamaterials

Kenji Tsuruta, Shinji Nagai, Ryosuke Umeda, Tomoyuki Kurose, Noriaki Maetani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We perform large-scale finite-difference time-domain (FDTD) simulations with the aid of efficient parallel-computing algorithms for designing optical and acoustic metamaterials, where either electromagnetic or elastic constants in the materials are artificially modulated via nano/micro-structuring. For optical metamaterials, effects of nanostructure on dielectric properties are taken into account by introducing the Drude-Lorentz model and a hybrid quantum-mechanical/classical FDTD method for optical dispersion of simple metal particles. Using these computational methods, we assess the materials dependence of light-confinement efficiency in the recently proposed novel structure that combines dielectrics and metamaterials periodically. In the acoustic case, we perform the parallel FDTD simulations of elastic-wave propagations in 2D phononic crystals. The negative refraction of acoustic wave is shown to occur via a negative effective mass appeared in their phonon band-structures. We demonstrate that the focal intensity by the lens effect and its energy-transfer efficiency can be optimized by adapting the filling fraction of the crystal.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings
Pages50-55
Number of pages6
Volume1223
Publication statusPublished - 2010
Event2009 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 30 2009Dec 4 2009

Other

Other2009 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/30/0912/4/09

Fingerprint

Metamaterials
Acoustics
acoustics
Crystals
simulation
Finite difference time domain method
Elastic waves
metal particles
Elastic constants
Parallel processing systems
Computational methods
Refraction
finite difference time domain method
elastic waves
Dielectric properties
Band structure
Energy transfer
Wave propagation
crystals
dielectric properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Tsuruta, K., Nagai, S., Umeda, R., Kurose, T., & Maetani, N. (2010). Parallel FDTD simulations on optical and acoustic metamaterials. In Materials Research Society Symposium Proceedings (Vol. 1223, pp. 50-55)

Parallel FDTD simulations on optical and acoustic metamaterials. / Tsuruta, Kenji; Nagai, Shinji; Umeda, Ryosuke; Kurose, Tomoyuki; Maetani, Noriaki.

Materials Research Society Symposium Proceedings. Vol. 1223 2010. p. 50-55.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tsuruta, K, Nagai, S, Umeda, R, Kurose, T & Maetani, N 2010, Parallel FDTD simulations on optical and acoustic metamaterials. in Materials Research Society Symposium Proceedings. vol. 1223, pp. 50-55, 2009 MRS Fall Meeting, Boston, MA, United States, 11/30/09.
Tsuruta K, Nagai S, Umeda R, Kurose T, Maetani N. Parallel FDTD simulations on optical and acoustic metamaterials. In Materials Research Society Symposium Proceedings. Vol. 1223. 2010. p. 50-55
Tsuruta, Kenji ; Nagai, Shinji ; Umeda, Ryosuke ; Kurose, Tomoyuki ; Maetani, Noriaki. / Parallel FDTD simulations on optical and acoustic metamaterials. Materials Research Society Symposium Proceedings. Vol. 1223 2010. pp. 50-55
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