Preparation and Raman enhancement properties of gold nanostars

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Shan, Feng^1 ; Zhang, Tong^1,2,3

Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing

210096, China^1

Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education, School of Instrument Science and Engineering, Southeast University, Nanjing

210096, China^2

Suzhou Key Laboratory of Metal Nano-Optoelectronic Technology, Suzhou Research Institute, Southeast University, Suzhou

215123, China^3

关键词: Control techniques;    Density of particles;    Gold nanostars;    Incident light;    Raman enhancement;    Self-assembly technique;    Sharp tip;    Surface enhanced Raman Scattering (SERS);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/2/022018/pdf
DOI  :  10.1088/1757-899X/322/2/022018

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Gold nanostars (GNSs) have a series of sharp tips structures, which will produce strong hot spots and have great application potential in Raman enhancement. In this paper, muti-tip GNSs have been prepared experimentally, and the control techniques of their tip and size have been mastered. For the first time, a fast and efficient self-assembly technique without additives has been developed, and a series of Surface Enhanced Raman Scattering (SERS) substrates have been successfully prepared by using this technique. The effect of different GNSs density of substrates on SERS signal is further studied experimentally. The results show that the SERS signal is closely related to the density of particles in the substrate. The higher density of GNSs in the substrate, the more hot spots covered by the incident light plate, and the greater contribution to the SERS signal.