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Surface plasmon field enhancements in deterministic aperiodic structures.

Roman Shugayev1

  • 1Department of Electrical and Computer Engineering & Photonics Center, Boston University, 8 Saint Mary’s Street, Boston, Massachusetts 02215, USA. shugayev@mit.psfc.edu

Optics Express
|December 18, 2010
PubMed
Summary
This summary is machine-generated.

Large aperiodic nanostructures exhibit plasmonic field enhancements comparable to random ones. The Generalized Ohm

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Area of Science:

  • Nanoscience and nanotechnology
  • Plasmonics
  • Computational electromagnetics

Background:

  • Aperiodic nanostructures offer unique optical properties.
  • Understanding plasmonic field enhancements is crucial for applications.
  • Deterministic structures may provide better control than random ones.

Purpose of the Study:

  • To analyze optical properties and plasmonic field enhancements in large aperiodic nanostructures.
  • To extend the Generalized Ohm's Law approach for estimating electromagnetic properties of various deterministic aperiodic structures.
  • To compare field enhancements in deterministic aperiodic structures with random morphologies.

Main Methods:

  • Extension of the Generalized Ohm's Law approach.
  • Analysis of Fibonacci, Rudin-Shapiro, cluster-cluster aggregate, and random deterministic clusters.
  • Comparison with discrete dipole method simulations.

Main Results:

  • Deterministic aperiodic structures yield field enhancements comparable to random morphologies.
  • The Generalized Ohm's Law approach accurately estimates electromagnetic properties for these structures.
  • Deterministic structures offer better understanding of field localizations and substrate design controllability.

Conclusions:

  • Aperiodic nanostructures, particularly deterministic ones, are promising for plasmonic applications.
  • The extended Generalized Ohm's Law is a valid and efficient method for analyzing such systems.
  • These findings facilitate improved design and control of nanostructure-based devices.