Self-assembled dichroic plasmonic nitride nanostructures with broken centrosymmetry for second-harmonic generation

Babonneau, D., Camelio, S., Abadias, G., Christofilos, D., Arvanitidis, J., Psilodimitrakopoulos, S., Maragkakis, G.M., Stratakis, E., Kalfagiannis, N. ORCID: 0000-0002-4030-5525 and Patsalas, P., 2021. Self-assembled dichroic plasmonic nitride nanostructures with broken centrosymmetry for second-harmonic generation. ACS Applied Nano Materials, 4 (9), 8789–8800. ISSN 2574-0970

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Abstract

TiN and ZrN are emerging as important alternative plasmonic materials. In addition to their well-known assets, they can incorporate point defects that break the centrosymmetry of their cubic crystal structure, making them promising candidates as nonlinear optical materials, especially for second-harmonic generation (SHG). Their refractory character and chemical stability have been obstacles for the bottom-up fabrication of TiN and ZrN nanostructures so far. In this work, it is shown that highly directional dichroic nanostructures of TiN and ZrN may be indeed grown by self-assembly using glancing angle deposition on periodic rippled dielectric surfaces. The produced nitride nanostructures exhibit point defects and exceptional photothermal durability. These nanostructures exhibit strong SHG response when probed by a near-infrared laser. It is shown that SHG is strongly associated with the near-field enhancement due to localized surface plasmon resonance of the nanostructures. Given that such nanostructures can endure extremely high electric fields, they are expected to be able to emit massive SHG signals and be applied in laser technology as optical components such as polarizers and SHG emitters.

Item Type: Journal article
Publication Title: ACS Applied Nano Materials
Creators: Babonneau, D., Camelio, S., Abadias, G., Christofilos, D., Arvanitidis, J., Psilodimitrakopoulos, S., Maragkakis, G.M., Stratakis, E., Kalfagiannis, N. and Patsalas, P.
Publisher: American Chemical Society (ACS)
Date: 24 September 2021
Volume: 4
Number: 9
ISSN: 2574-0970
Identifiers:
NumberType
10.1021/acsanm.1c01442DOI
1472146Other
Divisions: Schools > School of Science and Technology
Record created by: Laura Ward
Date Added: 24 Sep 2021 08:15
Last Modified: 24 Sep 2021 08:15
URI: http://irep.ntu.ac.uk/id/eprint/44245

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