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Ballistic dynamics of flexural thermal movements in a nanomembrane revealed with subatomic resolution

Flexural oscillations of freestanding films, nanomembranes, and nanowires are attracting growing attention for their importance to the fundamental physical and optical properties and device applications of two-dimensional and nanostructured (meta)materials. Here, we report on the observation of shor...

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Autores principales: Liu, Tongjun, Ou, Jun-Yu, Papasimakis, Nikitas, MacDonald, Kevin F., Gusev, Vitalyi E., Zheludev, Nikolay I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9390981/
https://www.ncbi.nlm.nih.gov/pubmed/35984884
http://dx.doi.org/10.1126/sciadv.abn8007
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author Liu, Tongjun
Ou, Jun-Yu
Papasimakis, Nikitas
MacDonald, Kevin F.
Gusev, Vitalyi E.
Zheludev, Nikolay I.
author_facet Liu, Tongjun
Ou, Jun-Yu
Papasimakis, Nikitas
MacDonald, Kevin F.
Gusev, Vitalyi E.
Zheludev, Nikolay I.
author_sort Liu, Tongjun
collection PubMed
description Flexural oscillations of freestanding films, nanomembranes, and nanowires are attracting growing attention for their importance to the fundamental physical and optical properties and device applications of two-dimensional and nanostructured (meta)materials. Here, we report on the observation of short–time scale ballistic motion in the flexural mode of a nanomembrane cantilever, driven by thermal fluctuation of flexural phonons, including measurements of ballistic velocities and displacements performed with subatomic resolution, using a free electron edge-scattering technique. Within intervals <10 μs, the membrane moves ballistically at a constant velocity, typically ~300 μm/s, while Brownian-like dynamics emerge for longer observation periods. Access to the ballistic regime provides verification of the equipartition theorem and Maxwell-Boltzmann statistics for flexural modes and can be used in fast thermometry and mass sensing during atomic absorption/desorption processes on the membrane.
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spelling pubmed-93909812022-08-26 Ballistic dynamics of flexural thermal movements in a nanomembrane revealed with subatomic resolution Liu, Tongjun Ou, Jun-Yu Papasimakis, Nikitas MacDonald, Kevin F. Gusev, Vitalyi E. Zheludev, Nikolay I. Sci Adv Physical and Materials Sciences Flexural oscillations of freestanding films, nanomembranes, and nanowires are attracting growing attention for their importance to the fundamental physical and optical properties and device applications of two-dimensional and nanostructured (meta)materials. Here, we report on the observation of short–time scale ballistic motion in the flexural mode of a nanomembrane cantilever, driven by thermal fluctuation of flexural phonons, including measurements of ballistic velocities and displacements performed with subatomic resolution, using a free electron edge-scattering technique. Within intervals <10 μs, the membrane moves ballistically at a constant velocity, typically ~300 μm/s, while Brownian-like dynamics emerge for longer observation periods. Access to the ballistic regime provides verification of the equipartition theorem and Maxwell-Boltzmann statistics for flexural modes and can be used in fast thermometry and mass sensing during atomic absorption/desorption processes on the membrane. American Association for the Advancement of Science 2022-08-19 /pmc/articles/PMC9390981/ /pubmed/35984884 http://dx.doi.org/10.1126/sciadv.abn8007 Text en Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Physical and Materials Sciences
Liu, Tongjun
Ou, Jun-Yu
Papasimakis, Nikitas
MacDonald, Kevin F.
Gusev, Vitalyi E.
Zheludev, Nikolay I.
Ballistic dynamics of flexural thermal movements in a nanomembrane revealed with subatomic resolution
title Ballistic dynamics of flexural thermal movements in a nanomembrane revealed with subatomic resolution
title_full Ballistic dynamics of flexural thermal movements in a nanomembrane revealed with subatomic resolution
title_fullStr Ballistic dynamics of flexural thermal movements in a nanomembrane revealed with subatomic resolution
title_full_unstemmed Ballistic dynamics of flexural thermal movements in a nanomembrane revealed with subatomic resolution
title_short Ballistic dynamics of flexural thermal movements in a nanomembrane revealed with subatomic resolution
title_sort ballistic dynamics of flexural thermal movements in a nanomembrane revealed with subatomic resolution
topic Physical and Materials Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9390981/
https://www.ncbi.nlm.nih.gov/pubmed/35984884
http://dx.doi.org/10.1126/sciadv.abn8007
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