A Nanoplasmonic Strategy for Precision in-situ Measurements of Tip-enhanced Raman and Fluorescence Spectroscopy

Scientific Reports
Lingyan MengZhilin Yang

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.

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Citations

Aug 30, 2016·Analytical Chemistry·Zhenglong ZhangMengtao Sun
Jun 24, 2017·Chemical Society Reviews·Tanja Deckert-GaudigVolker Deckert
Apr 13, 2018·Angewandte Chemie·Ya-Ping HuangJian-Feng Li
Nov 13, 2018·Nanotechnology·Lingyan MengMengtao Sun
Mar 1, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Yong WeiGuangjun Tian
Nov 20, 2016·Applied Optics·Chengyun ZhangHairong Zheng
Nov 6, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Huan PeiQiyuan Dai
May 16, 2018·Journal of Physics D: Applied Physics·Garrison M CrouchPaul W Bohn
Sep 9, 2021·Journal of the American Chemical Society·Yasuyuki YokotaYousoo Kim

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Methods Mentioned

BETA
surface plasmon resonance
surface-enhanced Raman scattering
atomic force microscopy
confocal spectroscopy
Fluorescence Spectroscopy

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