Abstract

Laser-induced synthesis of metal nanoparticles by the method of supercritical deposition provides a wide range of opportunities for implementing various strategies. In the present work, based on the example of silver nanoparticles in the pores of Vycor glass, we demonstrate that irradiation at the plasmon resonance frequency initiates preferential synthesis of a target group. In the present case, the initial ensemble of seeds characterized by a plasmon band at 440 nm was sequentially irradiated at 532 nm and then at 637 nm. This two-stage selective treatment leads to the appearance of a well-defined second peak at \({\sim}600\) nm, which indicates significant growth of the mass fraction of the corresponding group of the particles that were initially missing. The results we obtained clearly demonstrate that the use of plasmon properties of the nanoparticles allows tuning of the properties of the synthesized ensemble in a targeted manner.

中文翻译：

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激光诱导纳米多孔玻璃中银纳米粒子合成中的选择性刺激

摘要

通过超临界沉积方法进行的激光诱导的金属纳米颗粒合成为实现各种策略提供了广泛的机会。在当前的工作中，基于Vycor玻璃孔中的银纳米颗粒的例子，我们证明了以等离振子共振频率进行辐照会引发目标基团的优先合成。在当前情况下，以440nm的等离激元带为特征的种子的初始集合体依次在532nm然后在637nm下照射。这种两阶段的选择性处理导致在\（{\ sim} 600 \）处出现明确定义的第二个峰纳米，表明最初丢失的相应组颗粒的质量分数显着增长。我们获得的结果清楚地表明，使用纳米粒子的等离激元性质允许以有针对性的方式调节合成集合体的性质。