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Comparing phase sensitive detection and Fourier analysis of modulation excitation spectroscopy data exemplified by Ambient Pressure X-ray Photoelectron Spectroscopy

Küst, Ulrike LU orcid ; Prumbs, Julia LU ; Eads, Calley LU orcid ; Wang, Weijia LU ; Boix, Virginia LU ; Klyushin, Alexander LU ; Scardamaglia, Mattia LU ; Temperton, Robert LU ; Shavorskiy, Andrey LU and Knudsen, Jan LU (2025) In Surface Science 751.
Abstract

Dynamic processes in catalysis are gaining increased attention and could very well be one of the next frontiers in surface science. One way to study such processes is to induce chemical changes on the surface for example by periodically adjusting the (electro)chemical potential in situ and identify the resulting spectral changes. Often this is referred to as Modulation Excitation Spectroscopy (MES). Using Ambient Pressure Photoelectron Spectroscopy data, we here discuss and compare the analysis of MES data using both Phase Sensitive Detection (PSD) and Fourier analysis. We discuss that PSD determines the component magnitude at a user-defined phase value while Fourier analysis provides the maximum oscillation amplitude and respective... (More)

Dynamic processes in catalysis are gaining increased attention and could very well be one of the next frontiers in surface science. One way to study such processes is to induce chemical changes on the surface for example by periodically adjusting the (electro)chemical potential in situ and identify the resulting spectral changes. Often this is referred to as Modulation Excitation Spectroscopy (MES). Using Ambient Pressure Photoelectron Spectroscopy data, we here discuss and compare the analysis of MES data using both Phase Sensitive Detection (PSD) and Fourier analysis. We discuss that PSD determines the component magnitude at a user-defined phase value while Fourier analysis provides the maximum oscillation amplitude and respective phase value of oscillating spectral features. We discuss advantages and disadvantages of the different analysis schemes and explore how the full time-evolution can be obtained.

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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ambient Pressure XPS, Fourier transform, Phase sensitive detection, Time-resolved
in
Surface Science
volume
751
article number
122612
publisher
Elsevier
external identifiers
  • scopus:85205436968
ISSN
0039-6028
DOI
10.1016/j.susc.2024.122612
language
English
LU publication?
yes
id
0911e832-6d6b-485a-9503-a1e2ff51bf69
date added to LUP
2024-11-27 15:09:57
date last changed
2025-05-15 05:43:50
@article{0911e832-6d6b-485a-9503-a1e2ff51bf69,
  abstract     = {{<p>Dynamic processes in catalysis are gaining increased attention and could very well be one of the next frontiers in surface science. One way to study such processes is to induce chemical changes on the surface for example by periodically adjusting the (electro)chemical potential in situ and identify the resulting spectral changes. Often this is referred to as Modulation Excitation Spectroscopy (MES). Using Ambient Pressure Photoelectron Spectroscopy data, we here discuss and compare the analysis of MES data using both Phase Sensitive Detection (PSD) and Fourier analysis. We discuss that PSD determines the component magnitude at a user-defined phase value while Fourier analysis provides the maximum oscillation amplitude and respective phase value of oscillating spectral features. We discuss advantages and disadvantages of the different analysis schemes and explore how the full time-evolution can be obtained.</p>}},
  author       = {{Küst, Ulrike and Prumbs, Julia and Eads, Calley and Wang, Weijia and Boix, Virginia and Klyushin, Alexander and Scardamaglia, Mattia and Temperton, Robert and Shavorskiy, Andrey and Knudsen, Jan}},
  issn         = {{0039-6028}},
  keywords     = {{Ambient Pressure XPS; Fourier transform; Phase sensitive detection; Time-resolved}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Surface Science}},
  title        = {{Comparing phase sensitive detection and Fourier analysis of modulation excitation spectroscopy data exemplified by Ambient Pressure X-ray Photoelectron Spectroscopy}},
  url          = {{http://dx.doi.org/10.1016/j.susc.2024.122612}},
  doi          = {{10.1016/j.susc.2024.122612}},
  volume       = {{751}},
  year         = {{2025}},
}