Size-controllable synthesis of silver nanoparticles by femtosecond laser pulse train

Ning Zhang; Kaihu Zhang; Anpeng Su; Changxi Feng; Jiaxin Li; Kai Yang; Di Wu; Xingping Hu

doi:10.1117/12.2587644

2 December 2020 Size-controllable synthesis of silver nanoparticles by femtosecond laser pulse train

Ning Zhang, Kaihu Zhang, Anpeng Su, Changxi Feng, Jiaxin Li, Kai Yang, Di Wu, Xingping Hu

Proceedings Volume 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics; 117173I (2020) https://doi.org/10.1117/12.2587644
Event: 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 2020, Shanghai, China

Abstract

This work presents a novel approach for size-controllable synthesis of silver nanoparticles by ultra-fast pulse laser ablation of silver nitrate aqueous solution with a wavelength of 800 nm and a pulse width of 35 fs. The influence of laser pulse delay and ablated mono-crystal silicon substrate on the silver nanoparticles size distribution was analyzed by means of TEM morphology, SEM morphology, Energy Dispersive X-ray spectroscopy and surface-enhanced Raman spectroscopy. The experimental results show that: 1) As the laser pulse changes from single-pulse to double-pulse and the pulse delay increases from 400fs to 1000fs, the mean size of silver nanoparticles decreases while the average number of nanoparticles increases, making the size distribution more centralized when laser pulse irradiate silver nitrate solution directly. 2) Focusing the laser pulse on the solid-liquid interface, the number of silver nanoparticles produced by doublepulse is several times higher than that of single-pulse. With the increase of pulse delay, the number of nanoparticles increases firstly and then decreases, peaking at 400 fs, and obvious agglomeration occurs on the silicon substrate.

Citation Download Citation

Ning Zhang, Kaihu Zhang, Anpeng Su, Changxi Feng, Jiaxin Li, Kai Yang, Di Wu, and Xingping Hu "Size-controllable synthesis of silver nanoparticles by femtosecond laser pulse train", Proc. SPIE 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 117173I (2 December 2020); https://doi.org/10.1117/12.2587644

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