Thermal Effect during Laser-Induced Plasmonic Heating of Polyelectrolyte-Coated Gold Nanorods in Well Plates
Issued Date
2023-03-01
Resource Type
eISSN
20794991
Scopus ID
2-s2.0-85149707589
Journal Title
Nanomaterials
Volume
13
Issue
5
Rights Holder(s)
SCOPUS
Bibliographic Citation
Nanomaterials Vol.13 No.5 (2023)
Suggested Citation
Jiracheewanun S., Cortie M.B., Pissuwan D. Thermal Effect during Laser-Induced Plasmonic Heating of Polyelectrolyte-Coated Gold Nanorods in Well Plates. Nanomaterials Vol.13 No.5 (2023). doi:10.3390/nano13050845 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/81709
Title
Thermal Effect during Laser-Induced Plasmonic Heating of Polyelectrolyte-Coated Gold Nanorods in Well Plates
Author(s)
Author's Affiliation
Other Contributor(s)
Abstract
We examined the generation and transfer of heat when laser irradiation is applied to water containing a suspension of gold nanorods coated with different polyelectrolytes. The ubiquitous well plate was used as the geometry for these studies. The predictions of a finite element model were compared to experimental measurements. It is found that relatively high fluences must be applied in order to generate biologically relevant changes in temperature. This is due to the significant lateral heat transfer from the sides of the well, which strongly limits the temperature that can be achieved. A 650 mW continuous-wave (CW) laser, with a wavelength that is similar to the longitudinal plasmon resonance peak of the gold nanorods, can deliver heat with an overall efficiency of up to 3%. This is double the efficiency achievable without the nanorods. An increase in temperature of up to 15 °C can be achieved, which is suitable for the induction of cell death by hyperthermia. The nature of the polymer coating on the surface of the gold nanorods is found to have a small effect.