FDTD modeling of realistic semicontinuous metal films

U. K. Chettiar, P. Nyga, M. D. Thoreson, A. V. Kildishev, V. P. Drachev, V. M. Shalaev

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)


We have employed a parallelized 3D FDTD (finite-difference time-domain) solver to study the electromagnetic properties of random, semicontinuous, metal films. The structural features of the simulated geometries are exact copies of the fabricated films and are obtained from SEM images of the films themselves. The simulation results show good agreement with the experimentally observed far-field spectra, allowing us to also study the non-linear moments of the optical responses for these realistic nanostructures. These results help to further our understanding of the details of the electromagnetic response of randomly structured metal films. Our results can also be applied in the optimization of random metal nanostructures and in the design of surface-enhanced spectroscopies and other plasmonic applications.

Original languageEnglish
Pages (from-to)159-168
Number of pages10
JournalApplied Physics B: Lasers and Optics
Issue number1
Publication statusPublished - Jul 2010
Externally publishedYes


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