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High-resolution SEM with coupled transmission mode and EDX for quick characterization of micro- and nanocapsules for self-healing anti-corrosion coatings

  • More and more sub-micro and nano-materials shall be "quickly", but accurately characterized with respect to their morphology, shape, size or size distribution, but also to the chemical composition as well by means of an SEM/EDX (Scanning Electron Microscopy / X-Ray Energy Dispersive Spectrometry) system. This undertaking is becoming successful indeed if the transmission mode at low voltages such as those at a SEM, i. e. mostly up to 30 kV, and EDX, respectively is employed. The transmission mode at conventional SEM can e "activated" firstly by re-defining the specimen to be analyzed and preparing it as a thin specimen, which is quasi-transparent to electrons and by finding a way of collecting only the transmitted electrons for analysis. The first issue can be easily realized by using the conventional TEM grids (and the respective sample preparation); the second one becomes feasible either (i) by placing a socalled STEM semiconductor detector directly under the thin specimen or (ii) byMore and more sub-micro and nano-materials shall be "quickly", but accurately characterized with respect to their morphology, shape, size or size distribution, but also to the chemical composition as well by means of an SEM/EDX (Scanning Electron Microscopy / X-Ray Energy Dispersive Spectrometry) system. This undertaking is becoming successful indeed if the transmission mode at low voltages such as those at a SEM, i. e. mostly up to 30 kV, and EDX, respectively is employed. The transmission mode at conventional SEM can e "activated" firstly by re-defining the specimen to be analyzed and preparing it as a thin specimen, which is quasi-transparent to electrons and by finding a way of collecting only the transmitted electrons for analysis. The first issue can be easily realized by using the conventional TEM grids (and the respective sample preparation); the second one becomes feasible either (i) by placing a socalled STEM semiconductor detector directly under the thin specimen or (ii) by using a Special transmission set-up, which enables to the conventional Everhart-Thornley detector to collect only transmitted electrons by blocking the direct collection of secondary electrons and guiding only the transmitted electrons onto it.zeige mehrzeige weniger

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Metadaten
Autor*innen:Vasile-Dan HodoroabaORCiD, D. Akcakayiran, D. Grigoriev, D.G. Shchukin
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Microscopy and microanalysis
Jahr der Erstveröffentlichung:2013
Herausgeber (Institution):Microscopy Society of America
Verlag:Cambridge University Press
Verlagsort:New York, NY
Jahrgang/Band:19
Ausgabe/Heft:Suppl. 2
Erste Seite:374
Letzte Seite:375
Freie Schlagwörter:Anti-corrosion; EDX; Microcapsules; Nanocapsules; SEM; TSEM; Transmission
DOI:10.1017/S1431927613003863
ISSN:1431-9276
ISSN:1435-8115
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:07.11.2013
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