Cargando…

Non-Contact and Self-Calibrated Photopyroelectric Method for Complete Thermal Characterization of Porous Materials

A general theory of a photopyroelectric (PPE) configuration, based on an opaque sample and transparent pyroelectric sensor, backing and coupling fluids is developed. A combined back-front detection investigation, based on a frequency scan of the phase of the PPE signals, followed by a self-normaliza...

Descripción completa

Detalles Bibliográficos
Autores principales: Swapna, Mohanachandran Nair Sindhu, Tripon, Carmen, Gutt, Robert, Farcas, Alexandra, Bojan, Marcel, Korte, Dorota, Kacso, Irina, Franko, Mladen, Dadarlat, Dorin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10419518/
https://www.ncbi.nlm.nih.gov/pubmed/37569946
http://dx.doi.org/10.3390/ma16155242
_version_ 1785088542921195520
author Swapna, Mohanachandran Nair Sindhu
Tripon, Carmen
Gutt, Robert
Farcas, Alexandra
Bojan, Marcel
Korte, Dorota
Kacso, Irina
Franko, Mladen
Dadarlat, Dorin
author_facet Swapna, Mohanachandran Nair Sindhu
Tripon, Carmen
Gutt, Robert
Farcas, Alexandra
Bojan, Marcel
Korte, Dorota
Kacso, Irina
Franko, Mladen
Dadarlat, Dorin
author_sort Swapna, Mohanachandran Nair Sindhu
collection PubMed
description A general theory of a photopyroelectric (PPE) configuration, based on an opaque sample and transparent pyroelectric sensor, backing and coupling fluids is developed. A combined back-front detection investigation, based on a frequency scan of the phase of the PPE signals, followed by a self-normalization of the phases’ behavior, leads to the possibility of simultaneously measuring both thermal effusivity and diffusivity of a solid sample. A particular case of this configuration, with no coupling fluid at the sample/backing interface and air instead of coupling fluid at the sample/sensor interface (non-contact method) is suitable for simultaneous measurement ofboth thermal diffusivity and effusivity (in fact complete thermal characterization) of porous solids. Compared with the already proposed configurations for investigations of porous materials, this novel configuration makes use of a fitting procedure with only one fitting parameter, in order to guarantee the uniqueness of the solution. The porous solids belong to a class of materials which are by far not easy to be investigated using PPE. To the best of our knowledge, porous materials represent the only type of compounds, belonging to condensed matter, which were not taken into consideration (until recently) as potential samples for PPE calorimetric investigations. Consequently, the method proposed in this paper complete the area of applications of the PPE method. Applications on some porous building materials and cellulose-based samples validate the theory.
format Online
Article
Text
id pubmed-10419518
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-104195182023-08-12 Non-Contact and Self-Calibrated Photopyroelectric Method for Complete Thermal Characterization of Porous Materials Swapna, Mohanachandran Nair Sindhu Tripon, Carmen Gutt, Robert Farcas, Alexandra Bojan, Marcel Korte, Dorota Kacso, Irina Franko, Mladen Dadarlat, Dorin Materials (Basel) Article A general theory of a photopyroelectric (PPE) configuration, based on an opaque sample and transparent pyroelectric sensor, backing and coupling fluids is developed. A combined back-front detection investigation, based on a frequency scan of the phase of the PPE signals, followed by a self-normalization of the phases’ behavior, leads to the possibility of simultaneously measuring both thermal effusivity and diffusivity of a solid sample. A particular case of this configuration, with no coupling fluid at the sample/backing interface and air instead of coupling fluid at the sample/sensor interface (non-contact method) is suitable for simultaneous measurement ofboth thermal diffusivity and effusivity (in fact complete thermal characterization) of porous solids. Compared with the already proposed configurations for investigations of porous materials, this novel configuration makes use of a fitting procedure with only one fitting parameter, in order to guarantee the uniqueness of the solution. The porous solids belong to a class of materials which are by far not easy to be investigated using PPE. To the best of our knowledge, porous materials represent the only type of compounds, belonging to condensed matter, which were not taken into consideration (until recently) as potential samples for PPE calorimetric investigations. Consequently, the method proposed in this paper complete the area of applications of the PPE method. Applications on some porous building materials and cellulose-based samples validate the theory. MDPI 2023-07-26 /pmc/articles/PMC10419518/ /pubmed/37569946 http://dx.doi.org/10.3390/ma16155242 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
Swapna, Mohanachandran Nair Sindhu
Tripon, Carmen
Gutt, Robert
Farcas, Alexandra
Bojan, Marcel
Korte, Dorota
Kacso, Irina
Franko, Mladen
Dadarlat, Dorin
Non-Contact and Self-Calibrated Photopyroelectric Method for Complete Thermal Characterization of Porous Materials
title Non-Contact and Self-Calibrated Photopyroelectric Method for Complete Thermal Characterization of Porous Materials
title_full Non-Contact and Self-Calibrated Photopyroelectric Method for Complete Thermal Characterization of Porous Materials
title_fullStr Non-Contact and Self-Calibrated Photopyroelectric Method for Complete Thermal Characterization of Porous Materials
title_full_unstemmed Non-Contact and Self-Calibrated Photopyroelectric Method for Complete Thermal Characterization of Porous Materials
title_short Non-Contact and Self-Calibrated Photopyroelectric Method for Complete Thermal Characterization of Porous Materials
title_sort non-contact and self-calibrated photopyroelectric method for complete thermal characterization of porous materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10419518/
https://www.ncbi.nlm.nih.gov/pubmed/37569946
http://dx.doi.org/10.3390/ma16155242
work_keys_str_mv AT swapnamohanachandrannairsindhu noncontactandselfcalibratedphotopyroelectricmethodforcompletethermalcharacterizationofporousmaterials
AT triponcarmen noncontactandselfcalibratedphotopyroelectricmethodforcompletethermalcharacterizationofporousmaterials
AT guttrobert noncontactandselfcalibratedphotopyroelectricmethodforcompletethermalcharacterizationofporousmaterials
AT farcasalexandra noncontactandselfcalibratedphotopyroelectricmethodforcompletethermalcharacterizationofporousmaterials
AT bojanmarcel noncontactandselfcalibratedphotopyroelectricmethodforcompletethermalcharacterizationofporousmaterials
AT kortedorota noncontactandselfcalibratedphotopyroelectricmethodforcompletethermalcharacterizationofporousmaterials
AT kacsoirina noncontactandselfcalibratedphotopyroelectricmethodforcompletethermalcharacterizationofporousmaterials
AT frankomladen noncontactandselfcalibratedphotopyroelectricmethodforcompletethermalcharacterizationofporousmaterials
AT dadarlatdorin noncontactandselfcalibratedphotopyroelectricmethodforcompletethermalcharacterizationofporousmaterials