IJCMP | Characterization of the Scattering Properties of a Spherical Silver Nanoparticle via the Finite-Difference Time-Domain Method

Indexing and Abstracting

Characterization of the Scattering Properties of a Spherical Silver Nanoparticle via the Finite-Difference Time-Domain Method

Guy Francis Mongelli

International Journal of Chemistry, Mathematics And Physics(IJCMP), Vol-3,Issue-1, January - February 2019, Pages 15-17 , 10.22161/ijcmp.3.1.5

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Abstract:

Within this work Lumerical FDTD is applied to simulate how plane polarized light interacts with a single spherical silver nanoparticle. It allows for the determination of the light retention capability of the particle based upon counting how much light is scattered away from the particle after a long period as compared to how much enters the simulation region. This quantity, the nanoparticle albedo, is a key parameter in relating the scattering enhanced out-coupling efficiency. The two-dimensional finite-difference time-domain (FDTD) simulations are described for scattering layers with spherical nanoparticles in various external media for non-dispersive and have external indices from 1.0 to 2.0. FDTD takes into account this dispersive nature of the refractive index, which analytical solutions do not. A comparison between these two results will indicate that they agree within expected errors. The scattering and absorption cross-sections (CScat and CAbs), scattering and absorption efficiencies (QScat and QAbs), and albedo are calculated from this data. The albedo values are then output to the isotropic scattering model and an expected out-coupling factor is determined.

Keywords:

finite-difference time-domain (FDTD), organic light emitting diodes (OLEDs), scattering, silver nanoparticles.

References:

[1] K.S. Yee, “Numerical Solution to initial boundary value problems involving Maxwell’s equation with isotropic media”, IEEE Trans. Anten. Prop. 14 (3) (1966) 302-307.
[2] A. Taflove, S.C. Hagness; “Computational Electrodynamics: The finite-Difference TimeDomain Method”, Artech, Norwoord, MA, 3rd Edn (2005).
[3] S.M. Rao, “Time Domain Electromagnetics” Academic Press, San Diego (1999).
[4] D.M. Sullivan, “Electromagnetic Simulation Using the FDTD Method” IEEE Press, New York (2000).
[5] W.C. Chew, “Waves and fields in inhomogeneous media” Van Nostrand Reinhold, New York (1990).
[6] F. Floury, L. Escoubas, G. Berginc; “Optical properties of nanostructured materials: A Review” Journal of Nanophotonics, Vol. 5 (2011).
[7] A.F. Oskooi, D. Roundy, M. Ibanescu, P. Bermel, J.D. Joannopoulos, S.G. Johnson; “Meep: A flexible free-software package for electromagnetic simulations by the FDTD method” Computer Physics Communications 181.3 (2010).
[8] K.L. Kelly, E. Coronado, L.L. Zhao, G.C. Schatz; “The Optical Properties of Metal Nanoparticles: The Influence of Size, shape and Dielectric Environment” J. Phys. Chem. B 107 (2003).
[9] E.A. Palik, “Handbook of Optical Constants of Solids” Academic Press, Boston (1985).