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Femtosecond transmission electron microscopy for nanoscale photonics: a numerical study

C. W. Barlow Myers, N. J. Pine, W. A. Bryan, William Bryan Orcid Logo

Nanoscale, Volume: 10, Issue: 44, Pages: 20628 - 20639

Swansea University Author: William Bryan Orcid Logo

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DOI (Published version): 10.1039/C8NR06235H

Abstract

Recent developments in ultrafast electron microscopy have shown that spatial and temporal information can be collected simultaneously on very small and fast scales. In the present work, an instrumental design study with application to nanoscale dynamics, we optimize the conditions for a femtosecond...

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Published in: Nanoscale
ISSN: 2040-3364 2040-3372
Published: Royal Society of Chemistry 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa45450
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first_indexed 2018-11-05T20:16:40Z
last_indexed 2019-07-31T16:20:19Z
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spelling 2019-07-31T13:41:37.1262084 v2 45450 2018-11-05 Femtosecond transmission electron microscopy for nanoscale photonics: a numerical study 8765729ae362887eb6653857658f2342 0000-0002-2278-055X William Bryan William Bryan true false 2018-11-05 SPH Recent developments in ultrafast electron microscopy have shown that spatial and temporal information can be collected simultaneously on very small and fast scales. In the present work, an instrumental design study with application to nanoscale dynamics, we optimize the conditions for a femtosecond transmission electron microscope (fs-TEM). The fs-TEM numerically studied employs a metallic nanotip source, electrostatic acceleration, magnetic lenses, a condenser-objective around the sample and a temporal compressor, and considers space-charge effects during propagation. We find a spatial resolution of the order of 1 nm and a temporal resolution of below 10 fs will be feasible for pulses comprised of on average 20 electrons. The influence of a transverse electric field at the sample plane is modelled, indicating 1 V μm−1 can be resolved, corresponding to a surface charge density of 10e per μm2, comparable to fields generated in light-driven electronics and ultrafast nanoplasmonics. The realisation of such an instrument is anticipated to facilitate unprecedented elucidation of laser-initiated physical, chemical and biological structural dynamics on atomic time- and length-scales. Journal Article Nanoscale 10 44 20628 20639 Royal Society of Chemistry 2040-3364 2040-3372 Femtosecond transmission electron microscopy, ultrafast electron microscopy 2 11 2018 2018-11-02 10.1039/C8NR06235H pubs.rsc.org/en/Content/ArticleLanding/2018/NR/C8NR06235H COLLEGE NANME Physics COLLEGE CODE SPH Swansea University RCUK, EPSRC 2019-07-31T13:41:37.1262084 2018-11-05T14:02:27.6530041 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics C. W. Barlow Myers 1 N. J. Pine 2 W. A. Bryan 3 William Bryan 0000-0002-2278-055X 4 0045450-05112018140407.pdf c8nr06235h.pdf 2018-11-05T14:04:07.4200000 Output 3094363 application/pdf Version of Record true 2018-11-05T00:00:00.0000000 Released under the terms of a Creative Commons Attribution 3.0 Unported Licence (CC-BY). true eng
title Femtosecond transmission electron microscopy for nanoscale photonics: a numerical study
spellingShingle Femtosecond transmission electron microscopy for nanoscale photonics: a numerical study
William Bryan
title_short Femtosecond transmission electron microscopy for nanoscale photonics: a numerical study
title_full Femtosecond transmission electron microscopy for nanoscale photonics: a numerical study
title_fullStr Femtosecond transmission electron microscopy for nanoscale photonics: a numerical study
title_full_unstemmed Femtosecond transmission electron microscopy for nanoscale photonics: a numerical study
title_sort Femtosecond transmission electron microscopy for nanoscale photonics: a numerical study
author_id_str_mv 8765729ae362887eb6653857658f2342
author_id_fullname_str_mv 8765729ae362887eb6653857658f2342_***_William Bryan
author William Bryan
author2 C. W. Barlow Myers
N. J. Pine
W. A. Bryan
William Bryan
format Journal article
container_title Nanoscale
container_volume 10
container_issue 44
container_start_page 20628
publishDate 2018
institution Swansea University
issn 2040-3364
2040-3372
doi_str_mv 10.1039/C8NR06235H
publisher Royal Society of Chemistry
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
url pubs.rsc.org/en/Content/ArticleLanding/2018/NR/C8NR06235H
document_store_str 1
active_str 0
description Recent developments in ultrafast electron microscopy have shown that spatial and temporal information can be collected simultaneously on very small and fast scales. In the present work, an instrumental design study with application to nanoscale dynamics, we optimize the conditions for a femtosecond transmission electron microscope (fs-TEM). The fs-TEM numerically studied employs a metallic nanotip source, electrostatic acceleration, magnetic lenses, a condenser-objective around the sample and a temporal compressor, and considers space-charge effects during propagation. We find a spatial resolution of the order of 1 nm and a temporal resolution of below 10 fs will be feasible for pulses comprised of on average 20 electrons. The influence of a transverse electric field at the sample plane is modelled, indicating 1 V μm−1 can be resolved, corresponding to a surface charge density of 10e per μm2, comparable to fields generated in light-driven electronics and ultrafast nanoplasmonics. The realisation of such an instrument is anticipated to facilitate unprecedented elucidation of laser-initiated physical, chemical and biological structural dynamics on atomic time- and length-scales.
published_date 2018-11-02T03:57:15Z
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score 11.014224

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