4.6 Article

Large-Area 3D Plasmonic Crescents with Tunable Chirality

Journal

ADVANCED OPTICAL MATERIALS
Volume 7, Issue 15, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201801770

Keywords

chirality; colloidal lithography; multipole decomposition; plasmonics; split-ring resonator

Funding

  1. Deutsche Forschungsgemeinschaft (DFG) [VO 1824/434 5-1]

Ask authors/readers for more resources

Chiral plasmonic nanostructures hold promise for enhanced chiral sensing and circular dichroism spectroscopy of chiral molecules. It is therefore of interest to fabricate chiral plasmonic nanostructures with tailored chiroptical properties over large areas with reasonable effort. Here, a colloidal lithography approach is used to produce macroscopic arrays of sub-micrometer 3D chiral plasmonic crescent structures over areas >1 cm(2). The chirality originates from symmetry breaking by the introduction of a step within the crescent structure. This step is produced by an intermediate layer of silicon dioxide onto which the metal crescent structure is deposited. It is experimentally demonstrated that the chiroptical properties in such structures can be tailored by changing the position of the step within the crescent. These experiments are complemented by finite element simulations and the application of a multipole expansion to elucidate the physical origin of the circular dichroism of the crescent structures.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available