About this event
In this DENSsolutions Stream webinar, we welcome Dr. Birk Fritsch from Helmholtz Institute Erlangen-Nürnberg in Germany.
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Abstract
Liquid-phase (scanning) transmission electron microscopy (LP-(S)TEM) is a powerful tool for studying dynamics in liquids at the nanoscale with an unmatched combination of temporal and spatial resolution. However, employing high-energy irradiation to investigate processes in aqueous media is inevitably accompanied by energy transfer from the beam to the system. This causes beam-induced artifacts, such as beam-induced charging or heating. Most prominently, however, is beam-induced radiolysis, which alters the redox and acid-base chemistry in the irradiated volume and has the potential to govern the observed phenomena.
In our upcoming Stream webinar, Dr. Birk Fritsch from Helmholtz Institute Erlangen-Nürnberg (part of Research Centre Jülich GmbH) will share insights into how controlled liquid flow – a unique capability of the DENSsolutions Stream system – enables solution exchange in LP-(S)TEM experiments. Moreover, Dr. Fritsch will discuss how dwell time adjustments during scanning transmission electron microscopy can help to maintain control over LP-STEM experiments, using silver nanostructures as a model system. Importantly, he will demonstrate how synergetic combinations of experiments and kinetic modeling can help estimate the magnitude of beam-induced effects. Ultimately, this webinar highlights how correlative approaches enhance our understanding of experimental conditions, enabling meaningful conclusions even in the presence of electron beam's influence.
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DENSsolutions
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