Probing electron beam effects with chemoresistive nanosensors during in situ environmental transmission electron microscopy

S. Steinhauer; Z. Wang; Z. Zhou; J. Krainer; A. Köck; K. Nordlund; F. Djurabekova; P. Grammatikopoulos; M. Sowwan

doi:10.1063/1.4977711

Probing electron beam effects with chemoresistive nanosensors during in situ environmental transmission electron microscopy

S. Steinhauer, Z. Wang, Z. Zhou, J. Krainer, A. Köck, K. Nordlund, F. Djurabekova, P. Grammatikopoulos, M. Sowwan^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

We report in situ and ex situ fabrication approaches to construct p-type (CuO) and n-type (SnO₂) metal oxide nanowire devices for operation inside an environmental transmission electron microscope (TEM). By taking advantage of their chemoresistive properties, the nanowire devices were employed as sensitive probes for detecting reactive species induced by the interactions of high-energy electrons with surrounding gas molecules, in particular, for the case of O₂ gas pressures up to 20 mbar. In order to rationalize our experimental findings, a computational model based on the particle-in-cell method was implemented to calculate the spatial distributions of scattered electrons and ionized oxygen species in the environmental TEM. Our approach enables the a priori identification and qualitative measurement of undesirable beam effects, paving the way for future developments related to their mitigation.

Original language	English
Article number	094103
Journal	Applied Physics Letters
Volume	110
Issue number	9
DOIs	https://doi.org/10.1063/1.4977711
State	Published - 27 Feb 2017
Externally published	Yes

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title = "Probing electron beam effects with chemoresistive nanosensors during in situ environmental transmission electron microscopy",

abstract = "We report in situ and ex situ fabrication approaches to construct p-type (CuO) and n-type (SnO2) metal oxide nanowire devices for operation inside an environmental transmission electron microscope (TEM). By taking advantage of their chemoresistive properties, the nanowire devices were employed as sensitive probes for detecting reactive species induced by the interactions of high-energy electrons with surrounding gas molecules, in particular, for the case of O2 gas pressures up to 20 mbar. In order to rationalize our experimental findings, a computational model based on the particle-in-cell method was implemented to calculate the spatial distributions of scattered electrons and ionized oxygen species in the environmental TEM. Our approach enables the a priori identification and qualitative measurement of undesirable beam effects, paving the way for future developments related to their mitigation.",

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T1 - Probing electron beam effects with chemoresistive nanosensors during in situ environmental transmission electron microscopy

AU - Steinhauer, S.

AU - Wang, Z.

AU - Zhou, Z.

AU - Krainer, J.

AU - Köck, A.

AU - Nordlund, K.

AU - Djurabekova, F.

AU - Grammatikopoulos, P.

AU - Sowwan, M.

PY - 2017/2/27

Y1 - 2017/2/27

N2 - We report in situ and ex situ fabrication approaches to construct p-type (CuO) and n-type (SnO2) metal oxide nanowire devices for operation inside an environmental transmission electron microscope (TEM). By taking advantage of their chemoresistive properties, the nanowire devices were employed as sensitive probes for detecting reactive species induced by the interactions of high-energy electrons with surrounding gas molecules, in particular, for the case of O2 gas pressures up to 20 mbar. In order to rationalize our experimental findings, a computational model based on the particle-in-cell method was implemented to calculate the spatial distributions of scattered electrons and ionized oxygen species in the environmental TEM. Our approach enables the a priori identification and qualitative measurement of undesirable beam effects, paving the way for future developments related to their mitigation.

AB - We report in situ and ex situ fabrication approaches to construct p-type (CuO) and n-type (SnO2) metal oxide nanowire devices for operation inside an environmental transmission electron microscope (TEM). By taking advantage of their chemoresistive properties, the nanowire devices were employed as sensitive probes for detecting reactive species induced by the interactions of high-energy electrons with surrounding gas molecules, in particular, for the case of O2 gas pressures up to 20 mbar. In order to rationalize our experimental findings, a computational model based on the particle-in-cell method was implemented to calculate the spatial distributions of scattered electrons and ionized oxygen species in the environmental TEM. Our approach enables the a priori identification and qualitative measurement of undesirable beam effects, paving the way for future developments related to their mitigation.

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Probing electron beam effects with chemoresistive nanosensors during in situ environmental transmission electron microscopy

Abstract

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