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STM Visualization of N(2) Dissociative Chemisorption on Ru(0001) at High Impinging Kinetic Energies

[Image: see text] This paper examines the reactive surface dynamics of energy- and angle-selected N(2) dissociation on a clean Ru(0001) surface. Presented herein are the first STM images of highly energetic N(2) dissociation on terrace sites utilizing a novel UHV instrument that combines a supersoni...

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Autores principales: Wagner, Joshua, Grabnic, Tim, Sibener, S. J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9639351/
https://www.ncbi.nlm.nih.gov/pubmed/36366757
http://dx.doi.org/10.1021/acs.jpcc.2c05770
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author Wagner, Joshua
Grabnic, Tim
Sibener, S. J.
author_facet Wagner, Joshua
Grabnic, Tim
Sibener, S. J.
author_sort Wagner, Joshua
collection PubMed
description [Image: see text] This paper examines the reactive surface dynamics of energy- and angle-selected N(2) dissociation on a clean Ru(0001) surface. Presented herein are the first STM images of highly energetic N(2) dissociation on terrace sites utilizing a novel UHV instrument that combines a supersonic molecular beam with an in situ STM that is in-line with the molecular beam. Atomically resolved visualization of individual N(2) dissociation events elucidates the fundamental reactive dynamics of the N(2)/Ru(0001) system by providing a detailed understanding of the on-surface dissociation dynamics: the distance and angle between nitrogen atoms from the same dissociated N(2) molecule, site specificity and coordination of binding on terrace sites, and the local evolution of surrounding nanoscopic areas. These properties are precisely measured over a range of impinging N(2) kinetic energies and angles, revealing previously unattainable information about the energy dissipation channels that govern the reactivity of the system. The experimental results presented in this paper provide insight into the fundamental N(2) dissociation mechanism that, in conjunction with ongoing theoretical modeling, will help determine the role of dynamical processes such as energy transfer to surface phonons and nonadiabatic excitation of electron–hole pairs (ehps). These results will not only help uncover the underlying chemistry and physics that give rise to the unique behavior of this activated dissociative chemisorption system but also represent an exciting approach to studying reaction dynamics by pairing the angstrom-level spatiotemporal resolution of an in situ STM with nonequilibrium fluxes of reactive gases generated in a supersonic molecular beam to access highly activated chemical dynamics and observe the results of individual reaction events.
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spelling pubmed-96393512022-11-08 STM Visualization of N(2) Dissociative Chemisorption on Ru(0001) at High Impinging Kinetic Energies Wagner, Joshua Grabnic, Tim Sibener, S. J. J Phys Chem C Nanomater Interfaces [Image: see text] This paper examines the reactive surface dynamics of energy- and angle-selected N(2) dissociation on a clean Ru(0001) surface. Presented herein are the first STM images of highly energetic N(2) dissociation on terrace sites utilizing a novel UHV instrument that combines a supersonic molecular beam with an in situ STM that is in-line with the molecular beam. Atomically resolved visualization of individual N(2) dissociation events elucidates the fundamental reactive dynamics of the N(2)/Ru(0001) system by providing a detailed understanding of the on-surface dissociation dynamics: the distance and angle between nitrogen atoms from the same dissociated N(2) molecule, site specificity and coordination of binding on terrace sites, and the local evolution of surrounding nanoscopic areas. These properties are precisely measured over a range of impinging N(2) kinetic energies and angles, revealing previously unattainable information about the energy dissipation channels that govern the reactivity of the system. The experimental results presented in this paper provide insight into the fundamental N(2) dissociation mechanism that, in conjunction with ongoing theoretical modeling, will help determine the role of dynamical processes such as energy transfer to surface phonons and nonadiabatic excitation of electron–hole pairs (ehps). These results will not only help uncover the underlying chemistry and physics that give rise to the unique behavior of this activated dissociative chemisorption system but also represent an exciting approach to studying reaction dynamics by pairing the angstrom-level spatiotemporal resolution of an in situ STM with nonequilibrium fluxes of reactive gases generated in a supersonic molecular beam to access highly activated chemical dynamics and observe the results of individual reaction events. American Chemical Society 2022-10-19 2022-11-03 /pmc/articles/PMC9639351/ /pubmed/36366757 http://dx.doi.org/10.1021/acs.jpcc.2c05770 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Wagner, Joshua
Grabnic, Tim
Sibener, S. J.
STM Visualization of N(2) Dissociative Chemisorption on Ru(0001) at High Impinging Kinetic Energies
title STM Visualization of N(2) Dissociative Chemisorption on Ru(0001) at High Impinging Kinetic Energies
title_full STM Visualization of N(2) Dissociative Chemisorption on Ru(0001) at High Impinging Kinetic Energies
title_fullStr STM Visualization of N(2) Dissociative Chemisorption on Ru(0001) at High Impinging Kinetic Energies
title_full_unstemmed STM Visualization of N(2) Dissociative Chemisorption on Ru(0001) at High Impinging Kinetic Energies
title_short STM Visualization of N(2) Dissociative Chemisorption on Ru(0001) at High Impinging Kinetic Energies
title_sort stm visualization of n(2) dissociative chemisorption on ru(0001) at high impinging kinetic energies
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9639351/
https://www.ncbi.nlm.nih.gov/pubmed/36366757
http://dx.doi.org/10.1021/acs.jpcc.2c05770
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