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5 October 2023 Thermomechanical nanoengineering of phonon-polaritonic van der Waals materials
Maxim R. Shcherbakov, Naveed Hussain, Mashnoon A. Sakib, Zhaoxu Li, Mariia S. Stepanova, Hematha K. Wickramasinghe
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Proceedings Volume PC12648, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXI; PC126480I (2023) https://doi.org/10.1117/12.2678060
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States
Abstract
We discuss our recent results in nanophotonic properties of engineered naturally hyperbolic van der Waals materials. We thermomechanically control thin MoO3 flakes to tune their crystallographic and phonon-polaritonic properties. We show induction of an irreversible strain of up to -2.4% and tuning of the phonon-polaritonic dispersion relationship by more than 10%. By patterning a nanohole array in the exfoliated flakes, resonant phonon-polaritonic excitations result in more than an order of magnitude in mid-infrared field enhancement, resulting in a strong experimentally verified near-field response and enhancement of nonlinear optical properties.
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Maxim R. Shcherbakov, Naveed Hussain, Mashnoon A. Sakib, Zhaoxu Li, Mariia S. Stepanova, and Hematha K. Wickramasinghe "Thermomechanical nanoengineering of phonon-polaritonic van der Waals materials", Proc. SPIE PC12648, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXI, PC126480I (5 October 2023); https://doi.org/10.1117/12.2678060
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KEYWORDS
Nanoengineering
Phonons
Engineering
Finite-difference time-domain method
Thermography
Transmittance
Silicon
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