Cargando…
Effect of Noise on Determining Ultrathin-Film Parameters from QCM-D Data with the Viscoelastic Model
Quartz crystal microbalance with dissipation monitoring (QCM-D) is a well-established technique for studying soft films. It can provide gravimetric as well as nongravimetric information about a film, such as its thickness and mechanical properties. The interpretation of sets of overtone-normalized f...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9919223/ https://www.ncbi.nlm.nih.gov/pubmed/36772387 http://dx.doi.org/10.3390/s23031348 |
_version_ | 1784886770809176064 |
---|---|
author | Johannsmann, Diethelm Langhoff, Arne Leppin, Christian Reviakine, Ilya Maan, Anna M. C. |
author_facet | Johannsmann, Diethelm Langhoff, Arne Leppin, Christian Reviakine, Ilya Maan, Anna M. C. |
author_sort | Johannsmann, Diethelm |
collection | PubMed |
description | Quartz crystal microbalance with dissipation monitoring (QCM-D) is a well-established technique for studying soft films. It can provide gravimetric as well as nongravimetric information about a film, such as its thickness and mechanical properties. The interpretation of sets of overtone-normalized frequency shifts, ∆f/n, and overtone-normalized shifts in half-bandwidth, ΔΓ/n, provided by QCM-D relies on a model that, in general, contains five independent parameters that are needed to describe film thickness and frequency-dependent viscoelastic properties. Here, we examine how noise inherent in experimental data affects the determination of these parameters. There are certain conditions where noise prevents the reliable determination of film thickness and the loss tangent. On the other hand, we show that there are conditions where it is possible to determine all five parameters. We relate these conditions to the mathematical properties of the model in terms of simple conceptual diagrams that can help users understand the model’s behavior. Finally, we present new open source software for QCM-D data analysis written in Python, PyQTM. |
format | Online Article Text |
id | pubmed-9919223 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-99192232023-02-12 Effect of Noise on Determining Ultrathin-Film Parameters from QCM-D Data with the Viscoelastic Model Johannsmann, Diethelm Langhoff, Arne Leppin, Christian Reviakine, Ilya Maan, Anna M. C. Sensors (Basel) Article Quartz crystal microbalance with dissipation monitoring (QCM-D) is a well-established technique for studying soft films. It can provide gravimetric as well as nongravimetric information about a film, such as its thickness and mechanical properties. The interpretation of sets of overtone-normalized frequency shifts, ∆f/n, and overtone-normalized shifts in half-bandwidth, ΔΓ/n, provided by QCM-D relies on a model that, in general, contains five independent parameters that are needed to describe film thickness and frequency-dependent viscoelastic properties. Here, we examine how noise inherent in experimental data affects the determination of these parameters. There are certain conditions where noise prevents the reliable determination of film thickness and the loss tangent. On the other hand, we show that there are conditions where it is possible to determine all five parameters. We relate these conditions to the mathematical properties of the model in terms of simple conceptual diagrams that can help users understand the model’s behavior. Finally, we present new open source software for QCM-D data analysis written in Python, PyQTM. MDPI 2023-01-25 /pmc/articles/PMC9919223/ /pubmed/36772387 http://dx.doi.org/10.3390/s23031348 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Johannsmann, Diethelm Langhoff, Arne Leppin, Christian Reviakine, Ilya Maan, Anna M. C. Effect of Noise on Determining Ultrathin-Film Parameters from QCM-D Data with the Viscoelastic Model |
title | Effect of Noise on Determining Ultrathin-Film Parameters from QCM-D Data with the Viscoelastic Model |
title_full | Effect of Noise on Determining Ultrathin-Film Parameters from QCM-D Data with the Viscoelastic Model |
title_fullStr | Effect of Noise on Determining Ultrathin-Film Parameters from QCM-D Data with the Viscoelastic Model |
title_full_unstemmed | Effect of Noise on Determining Ultrathin-Film Parameters from QCM-D Data with the Viscoelastic Model |
title_short | Effect of Noise on Determining Ultrathin-Film Parameters from QCM-D Data with the Viscoelastic Model |
title_sort | effect of noise on determining ultrathin-film parameters from qcm-d data with the viscoelastic model |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9919223/ https://www.ncbi.nlm.nih.gov/pubmed/36772387 http://dx.doi.org/10.3390/s23031348 |
work_keys_str_mv | AT johannsmanndiethelm effectofnoiseondeterminingultrathinfilmparametersfromqcmddatawiththeviscoelasticmodel AT langhoffarne effectofnoiseondeterminingultrathinfilmparametersfromqcmddatawiththeviscoelasticmodel AT leppinchristian effectofnoiseondeterminingultrathinfilmparametersfromqcmddatawiththeviscoelasticmodel AT reviakineilya effectofnoiseondeterminingultrathinfilmparametersfromqcmddatawiththeviscoelasticmodel AT maanannamc effectofnoiseondeterminingultrathinfilmparametersfromqcmddatawiththeviscoelasticmodel |