Nonlocal Optical Response of Metal Nanostructures with Arbitrary Shape

Jeffrey M. McMahon, Stephen K. Gray, and George C. Schatz
Phys. Rev. Lett. 103, 097403 – Published 27 August 2009

Abstract

We present an implementation of Maxwell’s equations that incorporates the spatially nonlocal response of materials, an effect necessary to describe the optical properties of structures with features less than 10 nm. For the first time it is possible to investigate the nonlocal optical response of structures without spherical or planar shape, and outside of the electrostatic limit. As an illustration, we calculate the optical properties of Au nanowires and show that nonlocal effects are particularly important in structures with apex features, even for arbitrarily large sizes.

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  • Received 14 April 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.097403

©2009 American Physical Society

Authors & Affiliations

Jeffrey M. McMahon1,2, Stephen K. Gray2, and George C. Schatz1

  • 1Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
  • 2Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA

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Issue

Vol. 103, Iss. 9 — 28 August 2009

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