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Detection of sub-atomic movement in nanostructures

Detection of sub-atomic movement in nanostructures
Detection of sub-atomic movement in nanostructures
Nanoscale objects move fast and oscillate billions of times per second. Such movements occur naturally in the form of thermal (Brownian) motion while stimulated movements underpin the functionality of nano-mechanical sensors and active nano-(electro/opto)mechanical devices. Here we introduce a methodology for detecting such movements, based on the spectral analysis of secondary electron emission from moving nanostructures, that is sensitive to displacements of sub-atomic amplitude. We demonstrate the detection of nanowire Brownian oscillations of ~10 pm amplitude and hyperspectral mapping of stimulated oscillations of setae on the body of a common flea. The technique opens a range of opportunities for the study of dynamic processes in materials science, nanotechnology and biology.
electron microscopy, nanomechanics, thermal motion
2516-0230
2213-2216
Liu, Tongjun
724ead78-26b2-44a0-a490-d5866f83bbeb
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolay
32fb6af7-97e4-4d11-bca6-805745e40cc6
Liu, Tongjun
724ead78-26b2-44a0-a490-d5866f83bbeb
Ou, Jun-Yu
3fb703e3-b222-46d2-b4ee-75f296d9d64d
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, Nikolay
32fb6af7-97e4-4d11-bca6-805745e40cc6

Liu, Tongjun, Ou, Jun-Yu, MacDonald, Kevin F. and Zheludev, Nikolay (2021) Detection of sub-atomic movement in nanostructures. Nanoscale Advances, 3 (8), 2213-2216. (doi:10.1039/d0na01068e).

Record type: Article

Abstract

Nanoscale objects move fast and oscillate billions of times per second. Such movements occur naturally in the form of thermal (Brownian) motion while stimulated movements underpin the functionality of nano-mechanical sensors and active nano-(electro/opto)mechanical devices. Here we introduce a methodology for detecting such movements, based on the spectral analysis of secondary electron emission from moving nanostructures, that is sensitive to displacements of sub-atomic amplitude. We demonstrate the detection of nanowire Brownian oscillations of ~10 pm amplitude and hyperspectral mapping of stimulated oscillations of setae on the body of a common flea. The technique opens a range of opportunities for the study of dynamic processes in materials science, nanotechnology and biology.

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Accepted/In Press date: 8 February 2021
e-pub ahead of print date: 25 February 2021
Published date: 25 February 2021
Keywords: electron microscopy, nanomechanics, thermal motion

Identifiers

Local EPrints ID: 446729
URI: http://eprints.soton.ac.uk/id/eprint/446729
ISSN: 2516-0230
PURE UUID: b7ff6d13-446d-419d-a05e-d2302a42f466
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 Kevin F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for Nikolay Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 19 Feb 2021 17:31
Last modified: 26 Nov 2021 03:17

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