| Title: | Accuracy of measurements of thermophysical parameters by dual-beam thermal-lens spectrometry |
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| Authors: | ID Khabibullin, Vladislav R. (Author)
ID Franko, Mladen (Author)
ID Proskurnin, Mikhail A. (Author) |
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| Files: |  Accuracy_of_Measurements_of_Thermophysical_Parameters_by_Dual-Beam_Thermal-Lens_Spectrometry.pdf (9,88 MB)
MD5: 6F5E4D60FE0088A2DA26275A536BCBA0
 https://www.mdpi.com/2079-4991/13/3/430
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | Thermal-lens spectrometry is a sensitive technique for determination of physicochemical
properties and thermophysical parameters of various materials including heterogeneous systems
and nanoparticles. In this paper, we consider the issues of the correctness (trueness) of measurements
of the characteristic time of the thermal-lens effect and, thus, of the thermal diffusivity determined
by dual-beam mode-mismatching thermal lensing. As sources of systematic errors, major factors—
radiation sources, sample-cell and detector parameters, and general measurement parameters—are
considered using several configurations of the thermal-lens setups, and their contributions are
quantified or estimated. Furthermore, with aqueous ferroin and Sudan I in ethanol as inert colorants,
the effects of the intermolecular distance of the absorbing substance on the correctness of finding the
thermophysical parameters are considered. The recommendations for checking the operation of the
thermal-lens setup to ensure the maximum accuracy are given. The results obtained help reducing
the impact of each investigated factor on the value of systematic error and correctly measure the
thermophysical parameters using thermal-lens spectrometry. |
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| Keywords: | thermal-lens spectrometry, accuracy, trueness, mode-mismatched schematic, measurements of thermal diffusivity |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.01.2023 |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1-30 |
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| Numbering: | Vol. 13, no. 3, [article no.] 430 |
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| PID: | 20.500.12556/RUNG-7887-cf2803c5-c096-5ec3-3322-266d70320d4e  |
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| COBISS.SI-ID: | 138797827 |
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| UDC: | 54 |
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| ISSN on article: | 2079-4991 |
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| DOI: | 10.3390/nano13030430 |
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| NUK URN: | URN:SI:UNG:REP:LI7YYWEA |
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| Publication date in RUNG: | 20.01.2023 |
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| Views: | 1153 |
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| Downloads: | 13 |
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