High performance SERS platforms via parametric optimization of the laser-assisted photodeposition of silver and gold nanoparticles
High performance SERS platforms via parametric optimization of the laser-assisted photodeposition of silver and gold nanoparticles
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DOI：
10.1364/ome.437900
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发表时间：
2021-09
影响因子：
2.8
通讯作者：
Manuel Hoffmann;S. Wackerow;A. Abdolvand;S. Zolotovskaya
中科院分区：
文献类型：
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作者：
Manuel Hoffmann;S. Wackerow;A. Abdolvand;S. Zolotovskaya
通过实验设计，对激光辅助光催化生长Ag和Au纳米粒子的高Sers增强因子性能进行了参数优化。光沉积过程分为两个阶段-接种和生长-以实现最高可能的纳米颗粒表面覆盖的尺寸范围从10到100 nm。结果表明，Ag和Au纳米结构的生长过程中的参数效应有很大的不同，并以苯硫酚为探针分子，在532、633和785 nm处测试了光沉积Ag和Au纳米结构的Sers性能。在高激光能量密度下生长的银纳米结构获得了高增强的宽带Sers效应。Ag和Au纳米结构的Sers增强因子均达到105。
Parametric optimization of the laser-assisted photocatalytic growth of Ag and Au nanoparticles for high SERS enhancement factor performance informed by design of experiment is demonstrated. The photodeposition process was divided into two phases –seeding and growth– in order to achieve the highest possible nanoparticle surface coverage for the size range from 10 to 100 nm. A substantial difference in the parameter effects between the Ag and Au seeding and growth was found. The SERS performance of the photodeposited Ag and Au nanostructures was evaluated at 532, 633 and 785 nm with thiophenol as a probe molecule. A high-enhancement broadband SERS operation was attained with Ag nanostructure grown at high laser fluences. The SERS enhancement factors of 105 were achieved with both Ag and Au nanostructures.