AFM reconstruction of complex-shaped chiral plasmonic nanostructures
•A consistent approach for plasmonic nanostructure shape reconstruction is proposed.•Unit cell shape of a chiral metamaterial with a high aspect ratio was resolved.•The approach involves imaging using tilted AFM probe and customized post-processing.•Final averaged unit cell is combined of best resol...
Saved in:
Published in | Ultramicroscopy Vol. 181; pp. 81 - 85 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Netherlands
Elsevier B.V
01.10.2017
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | •A consistent approach for plasmonic nanostructure shape reconstruction is proposed.•Unit cell shape of a chiral metamaterial with a high aspect ratio was resolved.•The approach involves imaging using tilted AFM probe and customized post-processing.•Final averaged unit cell is combined of best resolved parts of multiple images.
A significant part of the optical metamaterial phenomena has the plasmonic nature and their investigation requires very accurate knowledge of the fabricated structures shape with a focus on the periodical features. We describe a consistent approach to the shape reconstruction of the plasmonic nanostructures. This includes vertical and tilted spike AFM probes fabrication, AFM imaging and specific post-processing. We studied a complex-shaped chiral metamaterial and conclude that the described post-processing routine extends possibilities of the existing deconvolution algorithms in the case of periodical structures with known rotational symmetry, by providing valuable information about periodical features. |
---|---|
ISSN: | 0304-3991 1879-2723 |
DOI: | 10.1016/j.ultramic.2017.05.013 |