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Updated: May 31, 2026

Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography

Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography

Published on: September 2, 2017

Angle- and spectral-dependent light scattering from plasmonic nanocups.

Nicholas S King¹, Yang Li, Ciceron Ayala-Orozco

¹Department of Physics and Astronomy, Rice University, 6100 Main Street, Houston, Texas 77005, USA.

|July 19, 2011

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Reduced-symmetry plasmonic nanoparticles, or nanoantennas, exhibit light scattering highly sensitive to their shape and surroundings. Even minor substrate variations significantly alter their optical behavior, impacting spectral and angular light dependence.

Area of Science:

Plasmonics
Nanophotonics
Optical Metamaterials

Background:

Reduced-symmetry plasmonic nanoparticles act as optical nanoantennas.
Their light-scattering properties are influenced by geometry, orientation, and dielectric environment.

Purpose of the Study:

Investigate how geometry, orientation, and dielectric environment affect light scattering by gold nanocups.
Analyze the spectral and angular dependence of scattered light.

Main Methods:

Experimental investigation of gold nanocups.
Analysis of light-scattering properties under varying conditions.

Main Results:

A dielectric substrate significantly alters the scattering profile of the axial electric dipole mode.

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Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography

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The transverse magnetic dipole mode shows insensitivity to the substrate.

Nanoscale irregularities and local substrate permittivity strongly affect scattering properties.

Conclusions:

The scattering behavior of gold nanocups is highly sensitive to environmental factors.
Substrate interactions and surface imperfections critically influence optical responses.