Thermal Diffusivity of Aqueous Dispersions of Silicon Oxide Nanoparticles by Dual-Beam Thermal Lens Spectrometry
The growing interest in heat-conducting nanofluids requires highly sensitive methods for analyzing the thermal properties. Thermal lens spectrometry (TLS), despite its advantages over classical methods, does not have a general approach for measuring and interpreting results for dispersed systems. In...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/6/1006 |
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| author | Vladislav R. Khabibullin Liliya O. Usoltseva Ivan V. Mikheev Mikhail A. Proskurnin |
| author_facet | Vladislav R. Khabibullin Liliya O. Usoltseva Ivan V. Mikheev Mikhail A. Proskurnin |
| author_sort | Vladislav R. Khabibullin |
| collection | DOAJ |
| description | The growing interest in heat-conducting nanofluids requires highly sensitive methods for analyzing the thermal properties. Thermal lens spectrometry (TLS), despite its advantages over classical methods, does not have a general approach for measuring and interpreting results for dispersed systems. In this paper, for nanofluids of silicon oxide in water in a wide range of concentrations and sizes, the selection of measurement parameters for transient and steady-state thermal lensing is justified, and the interpretation of the results of thermal diffusivity measurements is substantiated. The features of the measurements of thermal diffusivity by TLS under stationary states for dispersed systems are considered. Using this approach, it is possible to detect and distinguish thermal effects with high accuracy. For dispersions of silicon oxide, with increasing concentrations, the thermal diffusivity passes through a minimum threshold. Silicon oxide dispersions can be used both as coolants or as heat-removing liquids by selecting the particle size and concentration. |
| first_indexed | 2024-03-11T06:05:39Z |
| format | Article |
| id | doaj.art-eb4779047f47455b9552d4b608e55d29 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T06:05:39Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-eb4779047f47455b9552d4b608e55d292023-11-17T13:00:13ZengMDPI AGNanomaterials2079-49912023-03-01136100610.3390/nano13061006Thermal Diffusivity of Aqueous Dispersions of Silicon Oxide Nanoparticles by Dual-Beam Thermal Lens SpectrometryVladislav R. Khabibullin0Liliya O. Usoltseva1Ivan V. Mikheev2Mikhail A. Proskurnin3Analytical Chemistry Division, Chemistry Department, M.V. Lomonosov Moscow State University, d. 1, Str. 3, Lenin Hills, GSP-1 V-234, Moscow 119991, RussiaAnalytical Chemistry Division, Chemistry Department, M.V. Lomonosov Moscow State University, d. 1, Str. 3, Lenin Hills, GSP-1 V-234, Moscow 119991, RussiaAnalytical Chemistry Division, Chemistry Department, M.V. Lomonosov Moscow State University, d. 1, Str. 3, Lenin Hills, GSP-1 V-234, Moscow 119991, RussiaAnalytical Chemistry Division, Chemistry Department, M.V. Lomonosov Moscow State University, d. 1, Str. 3, Lenin Hills, GSP-1 V-234, Moscow 119991, RussiaThe growing interest in heat-conducting nanofluids requires highly sensitive methods for analyzing the thermal properties. Thermal lens spectrometry (TLS), despite its advantages over classical methods, does not have a general approach for measuring and interpreting results for dispersed systems. In this paper, for nanofluids of silicon oxide in water in a wide range of concentrations and sizes, the selection of measurement parameters for transient and steady-state thermal lensing is justified, and the interpretation of the results of thermal diffusivity measurements is substantiated. The features of the measurements of thermal diffusivity by TLS under stationary states for dispersed systems are considered. Using this approach, it is possible to detect and distinguish thermal effects with high accuracy. For dispersions of silicon oxide, with increasing concentrations, the thermal diffusivity passes through a minimum threshold. Silicon oxide dispersions can be used both as coolants or as heat-removing liquids by selecting the particle size and concentration.https://www.mdpi.com/2079-4991/13/6/1006thermal lens spectrometrythermal diffusivitydispersionsthermal effectsmeasurement sensitivity |
| spellingShingle | Vladislav R. Khabibullin Liliya O. Usoltseva Ivan V. Mikheev Mikhail A. Proskurnin Thermal Diffusivity of Aqueous Dispersions of Silicon Oxide Nanoparticles by Dual-Beam Thermal Lens Spectrometry Nanomaterials thermal lens spectrometry thermal diffusivity dispersions thermal effects measurement sensitivity |
| title | Thermal Diffusivity of Aqueous Dispersions of Silicon Oxide Nanoparticles by Dual-Beam Thermal Lens Spectrometry |
| title_full | Thermal Diffusivity of Aqueous Dispersions of Silicon Oxide Nanoparticles by Dual-Beam Thermal Lens Spectrometry |
| title_fullStr | Thermal Diffusivity of Aqueous Dispersions of Silicon Oxide Nanoparticles by Dual-Beam Thermal Lens Spectrometry |
| title_full_unstemmed | Thermal Diffusivity of Aqueous Dispersions of Silicon Oxide Nanoparticles by Dual-Beam Thermal Lens Spectrometry |
| title_short | Thermal Diffusivity of Aqueous Dispersions of Silicon Oxide Nanoparticles by Dual-Beam Thermal Lens Spectrometry |
| title_sort | thermal diffusivity of aqueous dispersions of silicon oxide nanoparticles by dual beam thermal lens spectrometry |
| topic | thermal lens spectrometry thermal diffusivity dispersions thermal effects measurement sensitivity |
| url | https://www.mdpi.com/2079-4991/13/6/1006 |
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