The quality of the scanning tip is crucial for tip-enhanced Raman spectroscopy (TERS) experiments towards large signal enhancement and high spatial resolution. In this work, we report a controllable fabrication method to prepare TERS-active tips by modifying the tip apex at the atomic scale, and propose two important criteria to in-situ judge the tip's TERS activity for tip-enhanced Raman measurements. One criterion is based on the downshift of the first image potential state to monitor the coupling between the far-field incident laser and near-field plasmon; the other is based on the appearance of the low-wavenumber Raman peaks associated with an atomistic protrusion at the tip apex to judge the coupling efficiency of emissions from the near field to the far field. This work provides an effective method to quickly fabricate and judge TERS-active tips before real TERS experiments on target molecules and other materials, which is believed to be instrumental for the development of TERS and other tip-enhanced spectroscopic techniques.
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October 2022
Research Article|
October 01 2022
Fast fabrication and judgement of tip-enhanced Raman spectroscopy-active tips
Special Collection:
Virtual issue on Molecular Spectroscopy (2022)
Xian-Biao Zhang;
Xian-Biao Zhang
Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China
, Hefei 230026, China
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Yu-Fan Zhang;
Yu-Fan Zhang
Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China
, Hefei 230026, China
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Hang Li;
Hang Li
Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China
, Hefei 230026, China
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Jie Cui;
Jie Cui
Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China
, Hefei 230026, China
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Song Jiang;
Song Jiang
Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China
, Hefei 230026, China
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Ben Yang;
Ben Yang
Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China
, Hefei 230026, China
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Yang Zhang;
Yang Zhang
Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China
, Hefei 230026, China
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Yao Zhang;
Yao Zhang
Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China
, Hefei 230026, China
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Zhen-Chao Dong
Zhen-Chao Dong
*
Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China
, Hefei 230026, China
*Author to whom correspondence should be addressed. E-mail: [email protected]
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*Author to whom correspondence should be addressed. E-mail: [email protected]
Chin. J. Chem. Phys. 35, 713–719 (2022)
Article history
Received:
May 30 2022
Accepted:
August 09 2022
Citation
Xian-Biao Zhang, Yu-Fan Zhang, Hang Li, Jie Cui, Song Jiang, Ben Yang, Yang Zhang, Yao Zhang, Zhen-Chao Dong; Fast fabrication and judgement of tip-enhanced Raman spectroscopy-active tips. Chin. J. Chem. Phys. 1 October 2022; 35 (5): 713–719. https://doi.org/10.1063/1674-0068/cjcp2205094
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