A proper excitation wavelength and strong hot-spot effect are of great importance for the application of surface-enhanced Raman spectroscopy(SERS)in the field of biochemistry.As a popular SERS substrate,noble metal na...A proper excitation wavelength and strong hot-spot effect are of great importance for the application of surface-enhanced Raman spectroscopy(SERS)in the field of biochemistry.As a popular SERS substrate,noble metal nanoparticles dimer is analyzed systematically in this paper.The hot-spot effect and the resonance peak position with varying geometric parameters of metal nanoparticles are investigated.Moreover,the excitation wavelength of bimetallic structure is discussed as well.The conclusions can provide reference for the selection of metal material at different excitation wavelengths.展开更多
基金supported by the National Natural Science Foundation of China(No.61905100)the Fundamental Research Funds for the Central Universities(No.lzujbky-2020-65)。
文摘A proper excitation wavelength and strong hot-spot effect are of great importance for the application of surface-enhanced Raman spectroscopy(SERS)in the field of biochemistry.As a popular SERS substrate,noble metal nanoparticles dimer is analyzed systematically in this paper.The hot-spot effect and the resonance peak position with varying geometric parameters of metal nanoparticles are investigated.Moreover,the excitation wavelength of bimetallic structure is discussed as well.The conclusions can provide reference for the selection of metal material at different excitation wavelengths.
