@article{10902/24541,
year = {2022},
month = {1},
url = {http://hdl.handle.net/10902/24541},
abstract = {Photoinduced hyperthermia is a cancer therapy technique that induces death to cancerous cells via heat generated by plasmonic nanoparticles. While previous studies have shown that some nanoparticles can be effective at killing cancer cells under certain conditions, there is still a necessity (or the need) to improve its heating efficiency. In this work, we perform a detailed theoretical study comparing the thermoplasmonic response of the most effective nanoparticle geometries up to now with a doughnut-shaped nanoparticle. We numerically demonstrate that the latter exhibits a superior tunable photothermal response in practical illumination conditions (unpolarized light). Furthermore, we show that nanoparticle heating in fluidic environments, i.e., nanoparticles undergoing Brownian rotations, strongly depends on the particle orientation with respect to the illumination source. We conclude that nanodoughnuts are the best nanoheaters in our set of structures, with an average temperature increment 40% higher than the second best nanoheater (nanodisk). Furthermore, nanodoughnuts feature a weak dependence on orientation, being therefore ideal candidates for photothermal therapy applications. Finally, we present a designing guide, covering a wide range of toroid designs, which can help on its experimental implementation.},
organization = {Acknowledgments. Authors would like to thank A. Franco and C. R. Crick for the interesting discussions. We
gratefully acknowledge financial support from Spanish national project (No. PGC2018-096649-B-I), the UK Leverhulme Turst (Grant No. RPG-2018-384), UK-EPSRC (EP/J003859/1) and Imperial College Europeans Partner Fund grant. J. G-C. thanks the Ministry of science of Spain for his FPI grant. G. S. thanks the Ministry of education for his collaboration grant and P.A. acknowledges funding for a Ramon y Cajal Fellowship (Grant No. RYC-2016-20831).},
publisher = {The Optical Society (OSA)},
publisher = {Optics Express, 2022, 30 (1), 125 - 137},
title = {Gold nanodoughnut as an outstanding nanoheater for photothermal applications},
author = {González Colsa, Javier and Serrera Pardueles, Guillermo and Saiz Vega, José María and Ortiz Márquez, María Dolores and González Fernández, Francisco and Bresme, Fernando and Moreno Gracia, Fernando and Albella Echave, Pablo},
}