材料科学
等离子体子
胶体金
纳米颗粒
光学
生物医学中的光声成像
光声光谱学
等离子纳米粒子
平方(代数)
纳米技术
光电子学
几何学
物理
数学
作者
Guanpin Ren,Limin Xu,Huan Zhan,Shuang Liu,Wei Jiang,Ru Li
出处
期刊:Applied Optics
[The Optical Society]
日期:2022-05-05
卷期号:61 (15): 4567-4567
摘要
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.
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