title: A Nanoplasmonic Strategy for Precision in-situ Measurements of Tip-enhanced Raman and Fluorescence Spectroscopy.
abstract: We theoretically investigate an optimized tip-film system that supports in-situ measurement of tip-enhanced Raman spectroscopy (TERS) and tip-enhanced fluorescence (TEF) of dye molecules. A scanning tunneling microscope (STM) is proposed to precisely control the tip-film distance, and thus in-situ measurement of TERS and TEF can be realized utilizing the specific surface plasmon resonance (SPR) properties of the tip-film system. Our calculations show that the optimized tip-film distance of 2 nm suggests a possibility of efficient acquisition of TERS and TEF in-situ. The calculated spatial resolution of TERS and spectral resolution of TEF can be down to 6.5 nm and 10 nm, respectively. Our theoretical results may find promising application in developing multiple functional nano-spectroscopy through which Raman and fluorescence can be measured in-situ at the nanoscale level.
authors.affiliation: Department of Physics, Xiamen University, Xiamen 361005, China.|Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.
authors.forename: Lingyan
authors.initials: L
authors.lastname: Meng
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.|Department of Physics, Xiamen University, Xiamen 361005, China.
authors.forename: Mengtao
authors.initials: M
authors.lastname: Sun
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.|Collaborative Innovation Center of Quantum Matter, Beijing 100871, China.
authors.forename: Jianing
authors.initials: J
authors.lastname: Chen
authors.affiliation: Department of Physics, Xiamen University, Xiamen 361005, China.
authors.forename: Zhilin
authors.initials: Z
authors.lastname: Yang