Heat generation of plasmonic nanoparticles

Matias Ruiz, Francisco Romero, Habib Ammari

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper we use layer potentials and asymptotic analysis techniques to analyze the heat generation due to nanoparticles when illuminated at their plasmonic resonance. We consider arbitrary-shaped particles and the cases of both a single and multiple particles. We clarify the strong dependency of the heat generation on the geometry of the particles as it depends on the eigenvalues of the associated Neumann--Poincaré operator. For close-to-touching nanoparticles, we show that the temperature field deviates significantly from the one generated by two single nanoparticles. The results of this paper formally explain experimental results reported in the nanomedical literature. They open a door for solving the challenging problems of detecting plasmonic nanoparticles in biological media and monitoring temperature elevation in tissue generated by nanoparticle heating.
Original languageEnglish
Pages (from-to)356–384
Number of pages29
JournalMultiscale Modeling and Simulation: A SIAM Interdisciplinary Journal (MMS)
Volume16
Issue number1
Early online date22 Feb 2018
DOIs
Publication statusPublished - 30 Apr 2018

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