Numerical Simulation of Light to Heat Conversion by Plasmonic Nanoheaters

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-12-19 DOI:10.1021/acs.nanolett.4c04872

María C. Nevárez Martínez, Dominik Kreft, Maciej Grzegorczyk, Sebastian Mahlik, Magdalena Narajczyk, Adriana Zaleska-Medynska, Demosthenes P. Morales, Jennifer A. Hollingsworth, James H. Werner

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Abstract

Plasmonic nanoparticles are widely recognized as photothermal conversion agents, i.e., nanotransducers or nanoheaters. Translation of these materials into practical applications requires quantitative analyses of their photothermal conversion efficiencies (η). However, the value of η obtained for different materials is dramatically influenced by the experimental setup and method of calculation. Here, we evaluate the most common methods for estimating η (Roper’s and Wang’s) and compare these with numerical estimates using the simulation software ANSYS. Experiments were performed with colloidal gold nanorod solutions suspended in a hanging droplet irradiated by an 808 nm diode laser and monitored by a thermal camera. The ANSYS simulations accounted for both heating and evaporation, providing η values consistent with the Wang method but higher than the Roper approach. This study details methods for estimating the photothermal efficiency and finds ANSYS to be a robust tool where experimental constraints complicate traditional methods.

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等离子纳米粒子被广泛认为是光热转换剂，即纳米换能器或纳米加热器。将这些材料转化为实际应用需要对其光热转换效率（η）进行定量分析。然而，不同材料获得的 η 值会受到实验装置和计算方法的极大影响。在此，我们评估了估算 η 的最常用方法（Roper 方法和 Wang 方法），并将其与使用模拟软件 ANSYS 进行的数值估算进行了比较。实验中，胶体金纳米棒溶液悬浮在悬挂的液滴中，由 808 纳米二极管激光器照射，并由热像仪监控。ANSYS 模拟考虑了加热和蒸发，得出的 η 值与 Wang 方法一致，但高于 Roper 方法。本研究详细介绍了估算光热效率的方法，并发现 ANSYS 是一种强大的工具，可用于因实验限制而使传统方法复杂化的情况。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.