期刊论文详细信息
Nanophotonics
Tip enhanced Raman scattering: plasmonic enhancements for nanoscale chemical analysis
article
Zachary D. Schultz1  James M. Marr1  Hao Wang1 
[1] Department of Chemistry and Biochemistry, University of Notre Dame
关键词: Raman;    TERS;    SERS;    plasmons;   
DOI  :  10.1515/nanoph-2013-0040
学科分类:社会科学、人文和艺术(综合)
来源: De Gruyter
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【 摘 要 】

Tip enhanced Raman scattering (TERS) is an emerging technique that uses a metalized scanning probe microscope tip to spatially localize electric fields that enhances Raman scattering enabling chemical imaging on nanometer dimensions. Arising from the same principles as surface enhanced Raman scattering (SERS), TERS offers unique advantages associated with controling the size, shape, and location of the enhancing nanostructure. In this article we discuss the correlations between current understanding of SERS and how this relates to TERS, as well as how TERS provides new understanding and insights. The relationship between plasmon resonances and Raman enhancements is emphasized as the key to obtaining optimal TERS results. Applications of TERS, including chemical analysis of carbon nanotubes, organic molecules, inorganic crystals, nucleic acids, proteins, cells and organisms, are used to illustrate the information that can be gained. Under ideal conditions TERS is capable of single molecule sensitivity and sub-nanometer spatial resolution. The ability to control plasmonic enhancements for chemical analysis suggests new experiments and opportunities to understand molecular composition and interactions on the nanoscale.

【 授权许可】

CC BY   

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