A needle probe to detect surface enhanced Raman scattering (SERS) within solid specimen
A needle probe has been developed to obtain surface enhanced Raman scattering data from within a solid specimen located remotely from the spectrometer. It produces the high signal strength of a single mode optical fiber but with a negligible fiber induced background. The observed Raman signal strength is comparable to that obtained with a microscope objective of the same numerical aperture in a conventional spectrometer arrangement and many times larger than that of probes using two fibers.
Publication Source (Journal or Book title)
Review of Scientific Instruments
Basu, S., Hou, H., Biswas, D., Maulik, S., Daniels-Race, T., Lopez, M., Mathis, M., & Feldman, M. (2017). A needle probe to detect surface enhanced Raman scattering (SERS) within solid specimen. Review of Scientific Instruments, 88 (2) https://doi.org/10.1063/1.4975183