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Ultrafast hyperspectral nanomotion imaging of ballistic and Brownian motion in metamaterial nanostructures

Ultrafast hyperspectral nanomotion imaging of ballistic and Brownian motion in metamaterial nanostructures
Ultrafast hyperspectral nanomotion imaging of ballistic and Brownian motion in metamaterial nanostructures
The building blocks of nanomechanical photonic metamaterials are perturbed by collisions with atoms of ambient atmospheric gas and by phonons in the crystal lattice of the constituent materials. Between collisions movements are ballistic, becoming diffusive (Brownian) at longer time scales. We show how one may distinguish between these regimes using ultrafast hyperspectral SEM nanomotion imaging and discuss their manifestation in the time-dependent optical properties of the metasurfaces.
Liu, Tongjun
724ead78-26b2-44a0-a490-d5866f83bbeb
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Liu, Tongjun
724ead78-26b2-44a0-a490-d5866f83bbeb
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5

Liu, Tongjun, Ou, Jun-Yu, Zheludev, Nikolai and MacDonald, Kevin F. (2020) Ultrafast hyperspectral nanomotion imaging of ballistic and Brownian motion in metamaterial nanostructures. Metamaterials'2020: 14th International Congress on Artificial Materials for Novel Wave Phenomena, Online. 28 Sep - 01 Oct 2020. 3 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

The building blocks of nanomechanical photonic metamaterials are perturbed by collisions with atoms of ambient atmospheric gas and by phonons in the crystal lattice of the constituent materials. Between collisions movements are ballistic, becoming diffusive (Brownian) at longer time scales. We show how one may distinguish between these regimes using ultrafast hyperspectral SEM nanomotion imaging and discuss their manifestation in the time-dependent optical properties of the metasurfaces.

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nanomotion imaging of ballistic and brownian motion - Accepted Manuscript
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More information

Accepted/In Press date: 20 July 2020
Published date: 28 September 2020
Venue - Dates: Metamaterials'2020: 14th International Congress on Artificial Materials for Novel Wave Phenomena, Online, 2020-09-28 - 2020-10-01

Identifiers

Local EPrints ID: 442762
URI: http://eprints.soton.ac.uk/id/eprint/442762
PURE UUID: f5fccd19-2318-4e71-90b1-342462816a45
ORCID for Tongjun Liu: ORCID iD orcid.org/0000-0003-4931-1734
ORCID for Jun-Yu Ou: ORCID iD orcid.org/0000-0001-8028-6130
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636
ORCID for Kevin F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976

Catalogue record

Date deposited: 27 Jul 2020 16:30
Last modified: 28 Sep 2020 04:01

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