Photoemission electron microscopy and scanning electron microscopy of Magnetospirillum magnetotacticum’s magnetosome chains

Journal Article · Tue Oct 07 00:00:00 EDT 2014 · Analytical Chemistry

DOI:https://doi.org/10.1021/ac502050j· OSTI ID:1159750

Keutner, Christoph ^[1]; von Bohlen, Alex ^[2]; Berges, Ulf ^[1]; Espeter, Philipp ^[1]; Schneider, Claus M. ^[3]; Westphal, Carsten ^[1]

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1. Technische Univ. Dortmund, Dortmung (Germany)
2. Leibniz-Institut fur Analytische Wissenschaften, Dortmund (Germany)
3. Peter Grunberg Institut, Julich (Germany)

Magnetotactic bacteria are of great interdisciplinary interest, since a vast field of applications from magnetic recording media to medical nanorobots is conceivable. A key feature for a further understanding is the detailed knowledge about the magnetosome chain within the bacteria. We report on two preparation procedures suitable for UHV experiments in reflective geometry. Further, we present the results of scanning electron microscopy, as well as the first photoemission electron microscopy experiments, both accessing the magnetosomes within intact magnetotactic bacteria and compare these to scanning electron microscopy data from the literature. From the images, we can clearly identify individual magnetosomes within their chains.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: OTHER
• OSTI ID: 1159750
• Journal Information: Analytical Chemistry, Vol. 86, Issue 19; ISSN 0003-2700
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: ENGLISH