Issue 16, 2014

The fabrication of three-dimensional plasmonic chiral structures by dynamic shadowing growth

Abstract

As chiral metamaterials become increasingly more technologically relevant, scalable, yet proficient nanofabrication methods will be needed for their production. Dynamic shadowing growth (DSG) that takes advantage of the vapor shadowing effect during physical vapor deposition is a simple and powerful tool to produce chiral nanostructures. In this report we describe several new DSG strategies for the scalable production of chiral plasmonic thin films with significant optical activity in the visible and near-infrared wavelength region. Specifically, we demonstrate that by use of metal composite (Ti/Ag) and metal/dielectric composite materials (Ag/MgF2), nanoscale helices can be fabricated using DSG at room temperature. Additionally, we show how self-assembled colloidal monolayers of nanospheres can serve as effective templates for the production of a wide variety of highly chiral films. These films can be used to construct chiral metamaterial-based devices for future applications.

Graphical abstract: The fabrication of three-dimensional plasmonic chiral structures by dynamic shadowing growth

Supplementary files

Article information

Article type
Paper
Submitted
07 Apr 2014
Accepted
11 Jun 2014
First published
16 Jun 2014

Nanoscale, 2014,6, 9467-9476

The fabrication of three-dimensional plasmonic chiral structures by dynamic shadowing growth

G. K. Larsen, Y. He, W. Ingram, E. T. LaPaquette, J. Wang and Y. Zhao, Nanoscale, 2014, 6, 9467 DOI: 10.1039/C4NR01878H

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