A facile method to compare EFTEM maps obtained from materials changing composition over time

Handle URI:
http://hdl.handle.net/10754/583301
Title:
A facile method to compare EFTEM maps obtained from materials changing composition over time
Authors:
Casu, Alberto; Genovese, Alessandro; Di Benedetto, Cristiano; Lentijo Mozo, Sergio; Sogne, Elisa ( 0000-0003-2097-4358 ) ; Zuddas, Efisio; Falqui, Andrea ( 0000-0002-1476-7742 )
Abstract:
Energy Filtered Transmission Electron Microscopy (EFTEM) is an analytical tool that has been successfully and widely employed in the last two decades for obtaining fast elemental maps in TEM mode. Several studies and efforts have been addressed to investigate limitations and advantages of such technique, as well as to improve the spatial resolution of compositional maps. Usually, EFTEM maps undergo post-acquisition treatments by changing brightness and contrast levels, either via dedicated software or via human elaboration, in order to maximize their signal-to-noise ratio and render them as visible as possible. However, elemental maps forming a single set of EFTEM images are usually subjected to independent map-by-map image treatment. This post-acquisition step becomes crucial when analyzing materials that change composition over time as a consequence of an external stimulus, because the map-by-map approach doesn't take into account how the chemical features of the imaged materials actually progress, in particular when the investigated elements exhibit very low signals. In this article, we present a facile procedure applicable to whole sets of EFTEM maps acquired on a sample that is evolving over time. The main aim is to find a common method to treat the images features, in order to make them as comparable as possible without affecting the information there contained. Microsc. Res. Tech. 78:1090–1097, 2015. © 2015 Wiley Periodicals, Inc.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division
Citation:
A facile method to compare EFTEM maps obtained from materials changing composition over time 2015:n/a Microscopy Research and Technique
Publisher:
Wiley-Blackwell
Journal:
Microscopy Research and Technique
Issue Date:
31-Oct-2015
DOI:
10.1002/jemt.22589
Type:
Article
ISSN:
1059910X
Additional Links:
http://doi.wiley.com/10.1002/jemt.22589
Appears in Collections:
Articles; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorCasu, Albertoen
dc.contributor.authorGenovese, Alessandroen
dc.contributor.authorDi Benedetto, Cristianoen
dc.contributor.authorLentijo Mozo, Sergioen
dc.contributor.authorSogne, Elisaen
dc.contributor.authorZuddas, Efisioen
dc.contributor.authorFalqui, Andreaen
dc.date.accessioned2015-12-07T09:58:19Zen
dc.date.available2015-12-07T09:58:19Zen
dc.date.issued2015-10-31en
dc.identifier.citationA facile method to compare EFTEM maps obtained from materials changing composition over time 2015:n/a Microscopy Research and Techniqueen
dc.identifier.issn1059910Xen
dc.identifier.doi10.1002/jemt.22589en
dc.identifier.urihttp://hdl.handle.net/10754/583301en
dc.description.abstractEnergy Filtered Transmission Electron Microscopy (EFTEM) is an analytical tool that has been successfully and widely employed in the last two decades for obtaining fast elemental maps in TEM mode. Several studies and efforts have been addressed to investigate limitations and advantages of such technique, as well as to improve the spatial resolution of compositional maps. Usually, EFTEM maps undergo post-acquisition treatments by changing brightness and contrast levels, either via dedicated software or via human elaboration, in order to maximize their signal-to-noise ratio and render them as visible as possible. However, elemental maps forming a single set of EFTEM images are usually subjected to independent map-by-map image treatment. This post-acquisition step becomes crucial when analyzing materials that change composition over time as a consequence of an external stimulus, because the map-by-map approach doesn't take into account how the chemical features of the imaged materials actually progress, in particular when the investigated elements exhibit very low signals. In this article, we present a facile procedure applicable to whole sets of EFTEM maps acquired on a sample that is evolving over time. The main aim is to find a common method to treat the images features, in order to make them as comparable as possible without affecting the information there contained. Microsc. Res. Tech. 78:1090–1097, 2015. © 2015 Wiley Periodicals, Inc.en
dc.language.isoenen
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1002/jemt.22589en
dc.rightsThis is the peer reviewed version of the following article: Casu, A., Genovese, A., Di Benedetto, C., Lentijo Mozo, S., Sogne, E., Zuddas, E. and Falqui, A. (2015), A facile method to compare EFTEM maps obtained from materials changing composition over time. Microsc. Res. Tech., 78: 1090–1097., which has been published in final form at http://doi.wiley.com/10.1002/jemt.22589. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.en
dc.subjectin situ EFTEMen
dc.subjectelemental mapsen
dc.subjectdigital image treatmenten
dc.titleA facile method to compare EFTEM maps obtained from materials changing composition over timeen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalMicroscopy Research and Techniqueen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorCasu, Albertoen
kaust.authorGenovese, Alessandroen
kaust.authorDi Benedetto, Cristianoen
kaust.authorLentijo Mozo, Sergioen
kaust.authorSogne, Elisaen
kaust.authorZuddas, Efisioen
kaust.authorFalqui, Andreaen
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