FDTD modeling of realistic semicontinuous metal films

Author

• Uday K. Chettiar, Purdue UniversityFollow
• P Nyga, Mil Univ Technol
• Mark D. Thoreson, Birck Nanotechnology Center, Purdue UniversityFollow
• Alexander V. Kildishev, Birck Nanotechnology Center, School of ECEFollow
• V. P. Drachev, Birck Nanotechnology Center, School of Electrical and Computer Engineering, Purdue UniversityFollow
• V. M. Shalaev, Birck Nanotechnology Center and School of Electrical and Computer Engineering, Purdue UniversityFollow

Abstract

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 nonlinear 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.

Keywords

ADAPTIVE SILVER FILMS; ORGANIC SOLAR-CELLS; DIELECTRIC COMPOSITES; NONLINEAR OPTICS; EXCITATIONS; LOCALIZATION; SPECTROSCOPY; FRACTALS

DOI

10.1007/s00340-010-3985-y

Citation

Chettiar, U.K., Nyga, P., Thoreson, M.D. et al. Appl. Phys. B (2010) 100: 159. doi:10.1007/s00340-010-3985-y

Date of this Version

7-2010

Recommended Citation

Chettiar, Uday K.; Nyga, P; Thoreson, Mark D.; Kildishev, Alexander V.; Drachev, V. P.; and Shalaev, V. M., "FDTD modeling of realistic semicontinuous metal films" (2010). Birck and NCN Publications. Paper 697.
http://dx.doi.org/10.1007/s00340-010-3985-y