Determination of the thermal boundary conductance of gold nanoparticles in aqueous solution using a method based on nanobubble generation

Martin G. Gonzalez; Eduardo O. Acosta; Guillermo D. Santiago

doi:10.1364/AO.57.006229

Applied Optics
Vol. 57,
Issue 21,
pp. 6229-6232
(2018)
•https://doi.org/10.1364/AO.57.006229

Determination of the thermal boundary conductance of gold nanoparticles in aqueous solution using a method based on nanobubble generation

Martin G. Gonzalez, Eduardo O. Acosta, and Guillermo D. Santiago

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Martin G. Gonzalez, Eduardo O. Acosta, and Guillermo D. Santiago, "Determination of the thermal boundary conductance of gold nanoparticles in aqueous solution using a method based on nanobubble generation," Appl. Opt. 57, 6229-6232 (2018)

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Abstract

We present a method to determine the thermal boundary conductance of gold nanoparticles in aqueous solution. The novel approach consists of two steps: first, measuring photoacoustic signals originated by laser-induced nanobubbles at different energies and, second, fitting the experimental data with a nanobubble generation model developed in a previous work. We used this method on gold nanoparticles with diameters from 10 to 70 nm. Within this range, we obtained values of the thermal boundary conductance between $180 W / m^{2} K$ and $225 W / m^{2} K$ .

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	GNP1	GNP2	GNP3	GNP4	GNP5	GNP6
Diameter (nm)	$13.4 \pm 1.0$	$20.1 \pm 2.0$	$26.6 \pm 2.5$	$30.8 \pm 3.1$	$59.5 \pm 9.1$	$68.4 \pm 9.5$
Concentration ( $10^{5} NP / {mm}^{3}$ )	$1350 \pm 80$	$720 \pm 40$	$240 \pm 10$	$55 \pm 5$	$6 \pm 0.5$	$6 \pm 0.5$
$F_{c} (J / m^{2})$	$2400 \pm 200$	$720 \pm 100$	$650 \pm 100$	$530 \pm 100$	$170 \pm 100$	$150 \pm 100$
$F_{m} (kJ / m^{2})$	$10 \pm 1$	$5 \pm 0.5$	$4.6 \pm 0.3$	$4.7 \pm 1$	$2.4 \pm 0.8$	$2.3 \pm 0.5$
$G (W / m^{2} K)$	$180 \pm 20$	$185 \pm 20$	$190 \pm 30$	$200 \pm 40$	$220 \pm 60$	$225 \pm 60$

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Applied Optics