Communications in Physics 30, 363-372 (2020)

ISSN: 0868-3166

PLASMONIC PHOTOTHERMAL HEATING OF GOLD NANOSHELL SOLUTIONS

DO THI NGA, LE BA NAM, TO THI THAO AND VU THI THUY DUONG

We present a theoretical approach to investigate how gold core-shell nanoparticles dispersed in water thermally respond to near-infrared-regime laser illumination. First, the absorption cross section of gold nanostructures is calculated using Mie theory. Second, we determine the absorbed power density when the solution is exposed by the laser light. Here, the solution of nanostructures is assumed to be uniform and homogenous. Third, we analytically solve the transient bioheat equation to calculate time-dependent temperature increase. Our theoretical calculations quantitatively agree with previous experiments without any adjustable parameter. This approach would provide a reliable tool to understand photothermal effects in unexplored structures.

DOI: 10.15625/0868-3166/30/4/15152

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