Liquid-Modulated Photothermal Phenomena in Porous Silicon Nanostructures Studied by μ-Raman Spectroscopy
In the present study, the effect of liquid filling of the nanopore network on thermal transport in porous Si layers was investigated by μ-Raman spectroscopy. The values of thermal conductivity of porous Si and porous Si-hexadecane composites were estimated by fitting the experimentally measured phot...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/2/310 |
| _version_ | 1797438173014392832 |
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| author | Oksana Makukha Ivan Lysenko Ali Belarouci |
| author_facet | Oksana Makukha Ivan Lysenko Ali Belarouci |
| author_sort | Oksana Makukha |
| collection | DOAJ |
| description | In the present study, the effect of liquid filling of the nanopore network on thermal transport in porous Si layers was investigated by μ-Raman spectroscopy. The values of thermal conductivity of porous Si and porous Si-hexadecane composites were estimated by fitting the experimentally measured photoinduced temperature rise with finite element method simulations. As a result, filling the pores with hexadecane led to (i) an increase in the thermal conductivity of the porous Si-hexadecane composite in a wide range of porosity levels (40–80%) and (ii) a suppression of the characteristic laser-induced phase transition of Si from cubic to hexagonal form. |
| first_indexed | 2024-03-09T11:32:38Z |
| format | Article |
| id | doaj.art-73c327f27786400f804cf2644dc478f9 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T11:32:38Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-73c327f27786400f804cf2644dc478f92023-11-30T23:48:06ZengMDPI AGNanomaterials2079-49912023-01-0113231010.3390/nano13020310Liquid-Modulated Photothermal Phenomena in Porous Silicon Nanostructures Studied by μ-Raman SpectroscopyOksana Makukha0Ivan Lysenko1Ali Belarouci2Lyon Institute of Nanotechnology, UMR 5270, INSA de Lyon, 69100 Villeurbanne, FrancePhysics Department, Taras Shevchenko National University of Kyiv, 01033 Kyiv, UkraineLyon Institute of Nanotechnology, UMR 5270, INSA de Lyon, 69100 Villeurbanne, FranceIn the present study, the effect of liquid filling of the nanopore network on thermal transport in porous Si layers was investigated by μ-Raman spectroscopy. The values of thermal conductivity of porous Si and porous Si-hexadecane composites were estimated by fitting the experimentally measured photoinduced temperature rise with finite element method simulations. As a result, filling the pores with hexadecane led to (i) an increase in the thermal conductivity of the porous Si-hexadecane composite in a wide range of porosity levels (40–80%) and (ii) a suppression of the characteristic laser-induced phase transition of Si from cubic to hexagonal form.https://www.mdpi.com/2079-4991/13/2/310thermal conductivityporous silicon-liquid compositeμ-Raman spectroscopyphotothermal phenomenaliquid-confined nanoporessilicon nanostructures |
| spellingShingle | Oksana Makukha Ivan Lysenko Ali Belarouci Liquid-Modulated Photothermal Phenomena in Porous Silicon Nanostructures Studied by μ-Raman Spectroscopy Nanomaterials thermal conductivity porous silicon-liquid composite μ-Raman spectroscopy photothermal phenomena liquid-confined nanopores silicon nanostructures |
| title | Liquid-Modulated Photothermal Phenomena in Porous Silicon Nanostructures Studied by μ-Raman Spectroscopy |
| title_full | Liquid-Modulated Photothermal Phenomena in Porous Silicon Nanostructures Studied by μ-Raman Spectroscopy |
| title_fullStr | Liquid-Modulated Photothermal Phenomena in Porous Silicon Nanostructures Studied by μ-Raman Spectroscopy |
| title_full_unstemmed | Liquid-Modulated Photothermal Phenomena in Porous Silicon Nanostructures Studied by μ-Raman Spectroscopy |
| title_short | Liquid-Modulated Photothermal Phenomena in Porous Silicon Nanostructures Studied by μ-Raman Spectroscopy |
| title_sort | liquid modulated photothermal phenomena in porous silicon nanostructures studied by μ raman spectroscopy |
| topic | thermal conductivity porous silicon-liquid composite μ-Raman spectroscopy photothermal phenomena liquid-confined nanopores silicon nanostructures |
| url | https://www.mdpi.com/2079-4991/13/2/310 |
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