报告题目：What is going on with SERS technique after 40 years’ study

报告时间：2017年4月15日（星期六）上午10点

报告地点：909楼一楼B厅

摘要

Surfaced enhanced Raman scattering (SERS) has promised to be a powerful tool from chemical analysis to bio-sensors due to its single-molecule sensitivity. However, after 40 years’ study, problem with large signal fluctuations to reproducibility has still impeded SERS from widespread application. The fabrication of SERS substrate with large and uniform SERS enhancement becomes crucial for practical applications.

In this talk, we would like to share what we have learned from our recent SERS investigation. The SERS phenomena of silver nanoparticle (AgNP) monolayers grown by Langmuir-Blodgett (LB) technique can be statistically analyzed and realized with laser scanning confocal micro-Raman spectroscopy and microscopy. The temporal behavior and spatial distribution of SERS hot spots were investigated in details. We believe that a well-established statistical analysis of SERS hot spots can be used to characterize the performance of SERS substrate in the near future.

Reference

1. H.-Y. Chen, M.-H. Lin, C.-Y. Wang, Y.-M. Chang, and S. Gwo, J. Am. Chem. Soc. 137, 13698�13705 (2015).

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