Xianbiao Zhang, Yu-Fan Zhang, Hang Li, Jie Cui, Song Jiang, Ben Yang, Yang Zhang, Yao Zhang, Z. Dong
{"title":"尖端增强拉曼光谱主动尖端的快速制造和判断","authors":"Xianbiao Zhang, Yu-Fan Zhang, Hang Li, Jie Cui, Song Jiang, Ben Yang, Yang Zhang, Yao Zhang, Z. Dong","doi":"10.1063/1674-0068/cjcp2205094","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":10036,"journal":{"name":"Chinese Journal of Chemical Physics","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Fast fabrication and judgement of tip-enhanced Raman spectroscopy-active tips\",\"authors\":\"Xianbiao Zhang, Yu-Fan Zhang, Hang Li, Jie Cui, Song Jiang, Ben Yang, Yang Zhang, Yao Zhang, Z. Dong\",\"doi\":\"10.1063/1674-0068/cjcp2205094\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"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.\",\"PeriodicalId\":10036,\"journal\":{\"name\":\"Chinese Journal of Chemical Physics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2022-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chinese Journal of Chemical Physics\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1063/1674-0068/cjcp2205094\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, ATOMIC, MOLECULAR & CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Journal of Chemical Physics","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1063/1674-0068/cjcp2205094","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, ATOMIC, MOLECULAR & CHEMICAL","Score":null,"Total":0}
Fast fabrication and judgement of tip-enhanced Raman spectroscopy-active tips
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.
期刊介绍:
Chinese Journal of Chemical Physics (CJCP) aims to bridge atomic and molecular level research in broad scope for disciplines in chemistry, physics, material science and life sciences, including the following:
Theoretical Methods, Algorithms, Statistical and Quantum Chemistry
Gas Phase Dynamics and Structure: Spectroscopy, Molecular Interactions, Scattering, Photochemistry
Condensed Phase Dynamics, Structure, and Thermodynamics: Spectroscopy, Reactions, and Relaxation Processes
Surfaces, Interfaces, Single Molecules, Materials and Nanosciences
Polymers, Biopolymers, and Complex Systems
Other related topics