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Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
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Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

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An optical reflectarray nanoantenna: the concept and design.

Akram Ahmadi1, Shabnam Ghadarghadr, Hossein Mosallaei

  • 1Applied EM and Optics Laboratory, ECE Department, Northeastern University Boston, Massachusetts 02115, USA. akrama@ece.neu.edu

Optics Express
|February 23, 2010
PubMed
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This study introduces a novel reflectarray nanoantenna using dielectric-plasmonic particles for optical frequencies. The design demonstrates efficient beam steering, paving the way for advanced optical devices.

Area of Science:

  • Nanophotonics and Metamaterials
  • Optical Engineering

Background:

  • Reflectarray antennas offer beam-forming capabilities.
  • Miniaturization of optical antennas is crucial for integrated photonic circuits.

Purpose of the Study:

  • To present the concept and design of a reflectarray nanoantenna at optical frequencies.
  • To demonstrate beam steering capabilities for optical applications.

Main Methods:

  • Utilizing nano-sized concentric spherical particles with dielectric cores and plasmonic shells.
  • Employing finite difference time domain (FDTD) numerical methods and dipole-modes scattering theory for design characterization and tuning.

Main Results:

  • A 6x6 element reflectarray nanoantenna operating at 357.1nm wavelength with a narrow beamwidth was designed.

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Last Updated: Jun 16, 2026

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
09:12

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Published on: May 28, 2016

Fabrication and Operation of a Nano-Optical Conveyor Belt
11:10

Fabrication and Operation of a Nano-Optical Conveyor Belt

Published on: August 26, 2015

  • Demonstrated scanned radiation characteristics for beam steering at 15 and 30 degrees.

    • Conclusions:

    • The proposed reflectarray nanoantenna design is viable for optical frequencies.
    • The design enables efficient control over optical beam directionality.