A series of Ag-Al alloy nanoparticles (NPs) were obtained on the silica substrates by ablating the Ag/Al bilayer thin film with an Nd:YAG fiber pulsed laser at ambient conditions. The corresponding tunability of localized surface plasmon resonance (LSPR) properties and the enhancement of Raman scattering intensity were realized due to the various Ag-Al alloy nanosphere sizes and states of aggregation by varying laser powers. With the increase of laser power, the crystalline quality of Ag-Al alloy NPs was improved with a red shift of the surface plasmon resonance wavelength from 432 nm to 484 nm. Furthermore, the simulation result of finite-difference time-domain (FDTD) showed a substantial agreement with experimental results. | Publication name | OPTICAL MATERIALS Volume: 96 Article Number: UNSP 109298 DOI: 10.1016/j.optmat.2019.109298 Published: OCT 2019 | | Author(s) | Sun, Wenfeng; Hong, Ruijin; Liu, Qingyou; Li, Zhengwang; Shi, Jingqi; Tao, Chunxian; Zhang, Dawei | | Corresponding author(s) | HONG Ruijin
rjhong@usst.edu.cn
Univ Shanghai Sci & Technol, Engn Res Ctr Opt Instrument & Syst, Minist Educ, 516 Jungong Rd, Shanghai 200093, Peoples R China.
Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, 516 Jungong Rd, Shanghai 200093, Peoples R China. | | Author(s) from IGCAS | LIU Qingyou | View here for the details
 |
 |
|
