当前位置: X-MOL 学术Opt. Mater. Express › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
High performance SERS platforms via parametric optimization of the laser-assisted photodeposition of silver and gold nanoparticles
Optical Materials Express ( IF 2.8 ) Pub Date : 2021-08-23 , DOI: 10.1364/ome.437900
Manuel Hoffmann , Stefan Wackerow , Amin Abdolvand , Svetlana A. Zolotovskaya

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.

中文翻译:

通过参数优化银和金纳米粒子的激光辅助光沉积的高性能 SERS 平台

展示了通过实验设计获得的高 SERS 增强因子性能的 Ag 和 Au 纳米粒子的激光辅助光催化生长的参数优化。光沉积过程分为两个阶段 - 接种和生长 - 以实现 10 至 100 nm 尺寸范围内尽可能高的纳米颗粒表面覆盖率。发现 Ag 和 Au 接种和生长之间的参数效应存在显着差异。使用苯硫酚作为探针分子在 532、633 和 785 nm 处评估了光沉积的 Ag 和 Au 纳米结构的 SERS 性能。通过在高激光能量密度下生长的银纳米结构实现了高增强宽带 SERS 操作。Ag和Au纳米结构都实现了10 5的SERS增强因子。
更新日期:2021-09-02
down
wechat
bug