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Electrospray deposition of nanoparticles on TEM grids

  • The authors have tested the prototype of an electrospray deposition system developed by the company RAMEM under its trademark IONER. To test the prototype and assess its performance, several materials have been sprayed onto TEM grids and the resulting particle distributions were compared to more traditional sample preparation strategies like the “drop on grid” method. Operation parameters such as the sample flow-rate, capillary – substrate distance, electric field strength and sampling period length have been optimized. It was found that the particles deposited by electrospray generally show a much more homogeneous spatial distribution on the substrate and a substantial increase of the number of single particles, which are much better suited to an automatic image evaluation procedure than the agglomerated particles observed otherwise. The applicability of the technique to a broad range of materials is demonstrated by various examples, but also the influence of the substrate, the choiceThe authors have tested the prototype of an electrospray deposition system developed by the company RAMEM under its trademark IONER. To test the prototype and assess its performance, several materials have been sprayed onto TEM grids and the resulting particle distributions were compared to more traditional sample preparation strategies like the “drop on grid” method. Operation parameters such as the sample flow-rate, capillary – substrate distance, electric field strength and sampling period length have been optimized. It was found that the particles deposited by electrospray generally show a much more homogeneous spatial distribution on the substrate and a substantial increase of the number of single particles, which are much better suited to an automatic image evaluation procedure than the agglomerated particles observed otherwise. The applicability of the technique to a broad range of materials is demonstrated by various examples, but also the influence of the substrate, the choice of the particular TEM grid, on the obtained spatial particle distribution is assessed.zeige mehrzeige weniger

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Metadaten
Autor*innen:Johannes Mielke, P. Dohányosová, S. Lopez, Vasile-Dan HodoroabaORCiD
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Microscopy and Microanalysis
Jahr der Erstveröffentlichung:2016
Verlag:Cambridge
Jahrgang/Band:22
Ausgabe/Heft:Suppl 3
Erste Seite:1846
Letzte Seite:1847
DDC-Klassifikation:Naturwissenschaften und Mathematik / Chemie / Analytische Chemie
Freie Schlagwörter:Electron microscopy; Electrspray deposition; Nanoparticles; Sample preparation
DOI:10.1017/S1431927616010072
URL:https://www.cambridge.org/core/journals/microscopy-and-microanalysis/article/electrospray-deposition-of-nanoparticles-on-tem-grids/459E634B7F74D474A19E15E69DA82E5D
ISSN:1431-9276
ISSN:1435-8115
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:24.11.2016
Referierte Publikation:Nein
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