Tuning the Chiroptical Properties of Elongated Nano-objects via Hierarchical Organization

Chiral materials appear as excellent candidates to control and manipulate the polarization of light in optical devices. In nanophotonics, the self-assembly of colloidal plasmonic nanoparticles gives rise to strong resonances in the visible range, and when such organizations are chiral, a strong chir...

Full description

Saved in:
Bibliographic Details
Published in:ACS nano 2020-04, Vol.14 (4), p.4111-4121
Main Authors: Gao, Jie, Wu, Wenbing, Lemaire, Vincent, Carvalho, Alain, Nlate, Sylvain, Buffeteau, Thierry, Oda, Reiko, Battie, Yann, Pauly, Matthias, Pouget, Emilie
Format: Article
Language:English
Subjects:
Chemical Sciences
Material chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Chiral materials appear as excellent candidates to control and manipulate the polarization of light in optical devices. In nanophotonics, the self-assembly of colloidal plasmonic nanoparticles gives rise to strong resonances in the visible range, and when such organizations are chiral, a strong chiroplasmonic effect can be observed. In the present work, we describe the optical properties of chiral artificial nanophotonic materials, Goldhelices, which are hierarchically organized by grazing incidence spraying. These Goldhelices are made by plasmonic nanoparticles (gold) grafted onto helical templates made from silica nanohelices. A comparison of oriented versus non-oriented surfaces has been performed by Mueller matrix polarimetry, showing the importance of the organization of the Goldhelices regarding their interaction with light. Moreover, mono- versus multilayer photonic films are created, and the measured optical properties are discussed and compared to simulations.
ISSN:1936-0851
1936-086X
DOI:10.1021/acsnano.9b08823