Influence of incident light properties on the formation of silver nanotriangles from spherical nanoparticles

IF 3.5 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2026-04-01 Epub Date: 2026-05-08 DOI:10.1016/j.photonics.2026.101557

Luis J. Mendoza-Herrera , Ivan Urbina , Ruth D. Mojica-Sepúlveda , Maria E. Etcheverry , Valeria B. Arce , Myrian C. Tebaldi

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Abstract

This work investigates the role of incident light properties in the formation of silver nanotriangles from spherical nanoparticles under LED irradiation. Unlike previous studies focused on post-synthesis reshaping, this study examines the formation pathway and transformation kinetics. Silver nanospheres with an initial plasmon resonance at 403 nm were irradiated using LEDs at 387.3, 464.3, 533.7, and 628.7 nm. A clear wavelength-dependent size evolution was observed, with nanotriangle edge lengths increasing linearly with the incident wavelength. Time-resolved extinction spectroscopy revealed a progressive decrease in the spherical nanoparticle peak, accompanied by the emergence of a second peak associated with triangular nanostructures. These results indicate that plasmon-mediated energy deposition drives anisotropic restructuring via surface atom diffusion and nanoparticle coalescence, providing insight into wavelength-controlled nanoparticle synthesis.

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入射光性质对球形纳米粒子形成银纳米三角形的影响

本文研究了在LED照射下，入射光特性在球形纳米粒子形成银纳米三角形中的作用。不同于以往的研究聚焦于合成后的重塑，本研究考察了形成途径和转化动力学。在387.3、464.3、533.7和628.7 nm处，用led照射具有403 nm初始等离子体共振的银纳米球。观察到一个明显的波长依赖的尺寸演变，纳米三角形边缘长度随入射波长线性增加。时间分辨消光光谱显示球形纳米粒子峰逐渐下降，同时出现与三角形纳米结构相关的第二个峰。这些结果表明，等离子体介导的能量沉积通过表面原子扩散和纳米粒子聚结驱动各向异性重构，为波长控制纳米粒子合成提供了新的思路。

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

Photonics and Nanostructures-Fundamentals and Applications 工程技术-材料科学：综合

CiteScore

5.00

自引率

3.70%

发文量

审稿时长

62 days

期刊介绍： This journal establishes a dedicated channel for physicists, material scientists, chemists, engineers and computer scientists who are interested in photonics and nanostructures, and especially in research related to photonic crystals, photonic band gaps and metamaterials. The Journal sheds light on the latest developments in this growing field of science that will see the emergence of faster telecommunications and ultimately computers that use light instead of electrons to connect components.