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@INPROCEEDINGS{Gorelik:1050789,
author = {Gorelik, Tatiana and Ummethala, Govind and Tavabi, Amir
Hossein and Dunin-Borkowski, Rafal and Basak, Shibabrata and
Eichel, Rüdiger-A.},
title = {{C}an e{PDF} {D}etect {W}ater in {S}ilicon {N}itride
{L}iquid {C}ells?},
reportid = {FZJ-2026-00511},
year = {2025},
abstract = {Recent developments in in situ and environmental TEM have
significantly advanced our ability to study dynamic
processes at the nanoscale. Innovations in liquid and gas
cell TEM have enabled real-time imaging of chemical
reactions, material transformations, and biological
processes under realistic conditions. Many of these
processes are inherently heterogeneous and involve
precipitation or crystallization. The most straightforward
method for detecting early crystallization states in a
liquid phase is the analysis of the electron Pair
Distribution Function (ePDF).Amorphous silicon nitride is
one of the most widely used materials for in situ TEM liquid
cells. As a result, the contribution of the membrane signal
is inevitably present in the diffraction data of the sample.
It is therefore crucial to analyze and understand the
contributions of both the Si3N4 membrane and water as a
solvent to accurately assign evolving structural features
and distinguish them from the signal of the reaction
species.Detecting water in the presence of Si3N4 is not a
trivial task, as most interatomic distances in their
respective Pair Distribution Functions overlap.
Consequently, rather than tracing the appearance of
additional peaks, we must analyse the distribution of
intensities, which are generally less reliable in ePDF due
to multiple scattering.Here, we present our results on the
ePDF analysis of water-filled Si3N4 chips, demonstrating the
information that can be extracted from ePDF data and
discussing the limitations of the procedure.},
month = {Aug},
date = {2025-08-31},
organization = {Microscopy Conference 2025, Karlsruhe
(Germany), 31 Aug 2025 - 4 Sep 2025},
subtyp = {After Call},
cin = {IET-1 / ER-C-1},
cid = {I:(DE-Juel1)IET-1-20110218 / I:(DE-Juel1)ER-C-1-20170209},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123)},
pid = {G:(DE-HGF)POF4-1231},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/1050789},
}