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4 October 2024 Applications of tip-enhanced Raman spectroscopy and imaging
Renato Zenobi
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Proceedings Volume 13117, Enhanced Spectroscopies and Nanoimaging 2024; 1311708 (2024) https://doi.org/10.1117/12.3027922
Event: Nanoscience + Engineering, 2024, San Diego, California, United States
Abstract
Tip-enhanced Raman Spectroscopy (TERS) is a nanoscale chemical analysis and imaging method with a spatial resolution of <10 nm, even at ambient conditions. TERS relies on the enhancement of the local electromagnetic field by a plasmonic metal nanostructure that is scanned over the sample by means of a scanning probe microscope, using either AFM or STM feedback. Analogous to SERS, the local electromagnetic field of Raman scattered light is enhanced by many orders of magnitude in TERS. However, the study of sensitive materials with TERS is not straightforward, partially due to sample degradation. The working principle, experimental realization, and capabilities of TERS will first be presented. We will then discuss recent applications of TERS to the spatially resolved chemical analysis and imaging of molecular systems. Examples from recent TERS studies in our laboratory will be chosen, focusing on catalysis, catalyst poisoning, active sites and reactive intermediates on catalyst surfaces, as well as their spatial arrangements leading to reaction.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Renato Zenobi "Applications of tip-enhanced Raman spectroscopy and imaging", Proc. SPIE 13117, Enhanced Spectroscopies and Nanoimaging 2024, 1311708 (4 October 2024); https://doi.org/10.1117/12.3027922
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KEYWORDS
Imaging spectroscopy
Raman spectroscopy
Chemistry
Chemical analysis
Electromagnetism
Imaging systems
Visualization
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