Nanomaterials for Nonlinear Optics

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanophotonics Materials and Devices".

Deadline for manuscript submissions: closed (20 September 2021) | Viewed by 2958

Special Issue Editor


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Guest Editor
Institut Lumière Matière, UMR 5306 CNRS and Université Claude Bernard Lyon 1, Lyon, France
Interests: nonlinear optics; nonlinear plasmonics; nanoparticles and nanoclusters; molecules and biomolecules for nonlinear optics; liquids; liquid surfaces and interfaces

Special Issue Information

Dear Colleagues,

Nanomaterials, that is, materials with at least one dimension under about a hundred nanometers, a dimension much smaller than optical wavelengths in the visible spectrum, have contributed to a paradigm change in nonlinear optics, opening routes to applications ranging from sensing and communications to tissue imaging or health, to name a few.

Nanomaterials can take many different aspects, from dielectric and plasmonic nanoparticles to two-dimensional nanoflakes or organic assemblies as well as their composites. Hence, the diversity in their physical properties is extremely rich and allows for a large range of possibilities to adapt them to suit application needs. Optical resonances are well-known examples of such tailored properties, but size and shape may constitute others. Different approaches have been developed in order to achieve this task, from bottom–up chemical synthesis routes to lithography-based top–down techniques. If these human-made architectured nanomaterials known as metamaterials are the most common ones, mature-based ones can nevertheless be found, and their use must probably be further developed.

The present Special Issue intends to present the current state of the art in the field, focusing on the nanomaterial nonlinear optical properties, as well as their use in applications involving a nonlinear optical process. Second-order processes such as second harmonic generation as well as third-order processes like two photon excited fluorescence are the most described ones, but sum frequency generation or Kerr effects also present potential alternatives.

I firmly believe that your contribution to this Special Issue on this topic will help the community to achieve a complete and useful overview of the most recent advances in the field.

Thank you.

Prof. Pierre-Francois Brevet
Guest Editor

Manuscript Submission Information

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Keywords

  • dielectric nanoparticles
  • plasmonic nanoparticles
  • molecular aggregates
  • nanocomposites
  • metamaterials
  • nonlinear plasmonics
  • second harmonic generation
  • two photon excited fluorescence
  • Kerr effects

Published Papers (1 paper)

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Research

17 pages, 3804 KiB  
Article
Gold-seeded Lithium Niobate Nanoparticles: Influence of Gold Surface Coverage on Second Harmonic Properties
by Rachael Taitt, Mathias Urbain, Zacharie Behel, Ana-María Pablo-Sainz-Ezquerra, Iryna Kandybka, Eloïse Millet, Nicolas Martinez-Rodriguez, Christelle Yeromonahos, Sandrine Beauquis, Ronan Le Dantec, Yannick Mugnier, Pierre-François Brevet, Yann Chevolot and Virginie Monnier
Nanomaterials 2021, 11(4), 950; https://doi.org/10.3390/nano11040950 - 8 Apr 2021
Cited by 8 | Viewed by 2212
Abstract
Hybrid nanoparticles composed of an efficient nonlinear optical core and a gold shell can enhance and tune the nonlinear optical emission thanks to the plasmonic effect. However the influence of an incomplete gold shell, i.e., isolated gold nano-islands, is still not well studied. [...] Read more.
Hybrid nanoparticles composed of an efficient nonlinear optical core and a gold shell can enhance and tune the nonlinear optical emission thanks to the plasmonic effect. However the influence of an incomplete gold shell, i.e., isolated gold nano-islands, is still not well studied. Here LiNbO3 (LN) core nanoparticles of 45 nm were coated with various densities of gold nano-seeds (AuSeeds). As both LN and AuSeeds bear negative surface charge, a positively-charged polymer was first coated onto LN. The number of polymer chains per LN was evaluated at 1210 by XPS and confirmed by fluorescence titration. Then, the surface coverage percentage of AuSeeds onto LN was estimated to a maximum of 30% using ICP-AES. The addition of AuSeeds was also accompanied with surface charge reversal, the negative charge increasing with the higher amount of AuSeeds. Finally, the first hyperpolarizability decreased with the increase of AuSeeds density while depolarization values for Au-seeded LN were close to the one of bare LN, showing a predominance of the second harmonic volumic contribution. Full article
(This article belongs to the Special Issue Nanomaterials for Nonlinear Optics)
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