Title
Wet-STEM tomography : principles, potentialities and limitations Wet-STEM tomography : principles, potentialities and limitations
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Cambridge, Mass. ,
Subject
Physics
Chemistry
Source (journal)
Microscopy and microanalysis. - Cambridge, Mass.
Volume/pages
20(2014) :2 , p. 366-375
ISSN
1431-9276
ISI
000337304700005
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The characterization of biological and inorganic materials by determining their three-dimensional structure in conditions closer to their native state is a major challenge of technological research. Environmental scanning electron microscopy (ESEM) provides access to the observation of hydrated samples in water environments. Here, we present a specific device for ESEM in the scanning transmission electron microscopy mode, allowing the acquisition of tilt-series suitable for tomographic reconstructions. The resolution which can be obtained with this device is first determined. Then, we demonstrate the feasibility of tomography on wet materials. The example studied here is hydrophilic mesoporous silica (MCM-41). Finally, the minimum thickness of water which can be detected is calculated from Monte Carlo simulations and compared with the resolution expected in the tomograms.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/bac60d/8373.pdf
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