Enhancement of Thermal Diffusivity in Au Nanofluids by the Localized Surface Plasmon Resonance.
Saved in:
| Title: | Enhancement of Thermal Diffusivity in Au Nanofluids by the Localized Surface Plasmon Resonance. |
|---|---|
| Authors: | C. Ribeiro, Karen1 (AUTHOR) karencristiane92@gmail.com, F. Turchiello, Rozane2 (AUTHOR) turchiel@utfpr.edu.br, L. Gómez, Sergio1 (AUTHOR) sgomez@uepg.br |
| Source: | Plasmonics. Sep2025, Vol. 20 Issue 9, p7927-7935. 9p. |
| Subjects: | Thermal diffusivity, Surface plasmon resonance, Nanofluids, Nanoparticle synthesis, Thermal lensing, Gold nanoparticles, Heat transfer, Electromagnetic waves |
| Abstract: | Plasmonic nanoparticles can efficiently convert electromagnetic energy into heat by undergoing coherent electronic oscillations, known as localized surface plasmon (LSP). After optical absorption, the excited (hot) electrons decay, releasing energy via radiative and non-radiative processes. Moreover, a plasmon-mediated energy transfer to the medium has been demonstrated. This effect could lead to an effective reduction of the thermal resistance of the nanoparticle, facilitating the diffusion of heat, i.e., to an enhancement of the thermal diffusivity. The key factor is the precise matching of the excitation beam wavelength with the one corresponding to the peak of the localized surface plasmon resonance (LSPR). In this study, we report the measurement of the thermal diffusivity of Au nanofluids, whose nanoparticles were synthesized via a photochemical route, using the dual-beam mode-mismatched thermal lens technique. Our results show that there is a 25% increase in thermal diffusivity in nanofluids containing nanoparticles whose maximum absorption band of LSPR occurs at the excitation beam wavelength. [ABSTRACT FROM AUTHOR] |
| Copyright of Plasmonics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| FullText | Links: – Type: pdflink Text: Availability: 1 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 188125875 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Enhancement of Thermal Diffusivity in Au Nanofluids by the Localized Surface Plasmon Resonance. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22C%2E+Ribeiro%2C+Karen%22">C. Ribeiro, Karen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> karencristiane92@gmail.com</i><br /><searchLink fieldCode="AR" term="%22F%2E+Turchiello%2C+Rozane%22">F. Turchiello, Rozane</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> turchiel@utfpr.edu.br</i><br /><searchLink fieldCode="AR" term="%22L%2E+Gómez%2C+Sergio%22">L. Gómez, Sergio</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> sgomez@uepg.br</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Plasmonics%22">Plasmonics</searchLink>. Sep2025, Vol. 20 Issue 9, p7927-7935. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Thermal+diffusivity%22">Thermal diffusivity</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+plasmon+resonance%22">Surface plasmon resonance</searchLink><br /><searchLink fieldCode="DE" term="%22Nanofluids%22">Nanofluids</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoparticle+synthesis%22">Nanoparticle synthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+lensing%22">Thermal lensing</searchLink><br /><searchLink fieldCode="DE" term="%22Gold+nanoparticles%22">Gold nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+transfer%22">Heat transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+waves%22">Electromagnetic waves</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Plasmonic nanoparticles can efficiently convert electromagnetic energy into heat by undergoing coherent electronic oscillations, known as localized surface plasmon (LSP). After optical absorption, the excited (hot) electrons decay, releasing energy via radiative and non-radiative processes. Moreover, a plasmon-mediated energy transfer to the medium has been demonstrated. This effect could lead to an effective reduction of the thermal resistance of the nanoparticle, facilitating the diffusion of heat, i.e., to an enhancement of the thermal diffusivity. The key factor is the precise matching of the excitation beam wavelength with the one corresponding to the peak of the localized surface plasmon resonance (LSPR). In this study, we report the measurement of the thermal diffusivity of Au nanofluids, whose nanoparticles were synthesized via a photochemical route, using the dual-beam mode-mismatched thermal lens technique. Our results show that there is a 25% increase in thermal diffusivity in nanofluids containing nanoparticles whose maximum absorption band of LSPR occurs at the excitation beam wavelength. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Plasmonics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=188125875 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11468-025-02838-3 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 7927 Subjects: – SubjectFull: Thermal diffusivity Type: general – SubjectFull: Surface plasmon resonance Type: general – SubjectFull: Nanofluids Type: general – SubjectFull: Nanoparticle synthesis Type: general – SubjectFull: Thermal lensing Type: general – SubjectFull: Gold nanoparticles Type: general – SubjectFull: Heat transfer Type: general – SubjectFull: Electromagnetic waves Type: general Titles: – TitleFull: Enhancement of Thermal Diffusivity in Au Nanofluids by the Localized Surface Plasmon Resonance. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: C. Ribeiro, Karen – PersonEntity: Name: NameFull: F. Turchiello, Rozane – PersonEntity: Name: NameFull: L. Gómez, Sergio IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 15571955 Numbering: – Type: volume Value: 20 – Type: issue Value: 9 Titles: – TitleFull: Plasmonics Type: main |
| ResultId | 1 |
