Abstract
Gold nanoparticles with strong localized plasmonic effects have found wide applications in photoacoustic imaging, which are ascribed to their unique microscopic mechanism of converting photons to ultrasound. In this report, we quantitatively model the time-resolved temperature field, thermal expansion, and pressure distribution based on the finite element analysis method, and two-dimensional gold nanoparticles spanning from the triangle, square, pentagon, and hexagon to the circle have been systematically studied. Results show that the shape of gold nanoparticles has a nontrivial effect on photoacoustic conversion efficiency, and the square-shaped gold structure exhibits the best performance. Our findings could shed light on the shape design of high-performance photoacoustic agents in the future.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Domantas Peckus, Asta Tamulevičienė, Karine Mougin, Arnaud Spangenberg, Loic Vidal, Quentin Bauerlin, Marc Keller, Joel Henzie, Linas Puodžiukynas, Tomas Tamulevičius, and Sigitas Tamulevičius
Opt. Express 30(15) 27730-27745 (2022)
Frances Camille P. Masim, Hao-Li Liu, Matteo Porta, Tetsu Yonezawa, Armandas Balčytis, Saulius Juodkazis, Wei-Hung Hsu, and Koji Hatanaka
Opt. Express 24(13) 14781-14792 (2016)
Linzhuang Xing, Ruipeng Wang, and Hao Jia
Appl. Opt. 62(2) 475-480 (2023)