Well-ordered self-assembled plasmonic dimers for surface-enhanced Raman scattering

被引：0

作者：

Khadem, Hossein ^{[1
]}

Tavassoli, Seyed Hassan ^{[1
]}

机构：

[1] SBU, LAPRI, Tehran, Iran

来源：

MATERIALS TODAY COMMUNICATIONS | 2019年 / 20卷

关键词：

Raman; Nanoparticles; Surface-enhanced Raman scattering; Well-ordered; Self-assembly; SILVER NANOPARTICLES; OPTICAL SENSORS; SPECTROSCOPY; ABSORPTION; NANORODS;

D O I：

10.1016/j.mtcomm.2019.100593

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Surface-enhanced Raman scattering (SERS) using structures of metal nanoparticles (NPs) is extremely sensitive to the relative orientation of the polarization of the incident light with the interparticle axis. Self-assembly of metal nanoparticles is a well-known approach to fabricate nanostructures. However, controlling the assembly direction of the NPs in this method is difficult. In this Letter, we propose a controlled self-assembly method using vacuum ultraviolet (VUV) light. By illuminating the surface-functionalized NPs with VUV light, the functionality is cancelled out, and therefore, we can select desirable direction of assembly. In the light of this method, well-ordered dimers (WODs) of silver NPs are fabricated. The Raman enhancement factor of WODs is about twice larger than randomly ordered ones.

引用

页数：5

共 26 条

[1]

Atwater HA, 2010, NAT MATER, V9, P205, DOI [10.1038/nmat2629, 10.1038/NMAT2629]

[2] Synthesis of Highly Monodisperse Citrate-Stabilized Silver Nanoparticles of up to 200 nm: Kinetic Control and Catalytic Properties [J].