CC BY
2The 30th International Conference on Advanced Laser Technologies
LD-I-12
Laser synthesis for SERS
ALT'23
A. Manshina
Institute of Chemistry, Saint-Petersburg State University, 26 Universitetskii Prospect, 198504 Saint-Petersburg, Russia
email address: a.manshina@spbu.ru
Highly efficient, homogeneous, and reproducible substrates for surface enhanced Raman spectroscopy (SERS) are highly demanded for practical broadband sensing and various analytes detection. To date, there are huge number of diffrent synthesis strategies allowing obtaining of SERS active substrates. However most of them give substrates with fixed characteristics - composition, morphology that requries using other methods for creation of SERS active structures with another properties.
Here we present universal and scalable approach for creation SERS active sabstrates with finely tuned parameters - composition, topology, spectral width of SERS sensing, etc. The approach is based on laser induced deposition method. It allows formation of plasmonic nanostructures directly on the substrate surface from simple solutions of metal precursors (metalorganic complexes or salts) under low intensity CW laser radiation [1-4]. Thus, variation of experimental parameters (kind of precursor, solvent, laser wavelength, laser irradiation time) allows precise variation of characteristics of plasmonic nanostructures (Figure 1). All the plasmonic nanostructures created by LID exhibit high SERS analytical enhancement factor in wide spectral range, and a linear response toward sensing in a wide concentration range as well as high reproducibility of SERS signal over substrate. As analytes, various substances from classical dyes to toxins and bioliquids were studied.
Figure 1 SEM images of typical nanostructures obtained by LID: a) nanoparticles, b) nanoflake, and c) nanoflower
Acknowledgements
This work was supported by RSF project 23-49-10044. Authors are grateful to "Centre for Optical and Laser materials research" and "Interdisciplinary Resource Centre for Nanotechnology'' Research Park of Saint Petersburg State University for technical support.
References
[1] A. Povolotckaia, D. Pankin, Yu. Petrov, A. Vasileva, I. Kolesnikov, G. Sarau, S. Christiansen, G. Leuchs, and A. Manshina, J Mater Sci 54:8177-8186,(2019)
[2]. D. V. Mamonova, A. A. Vasileva, Y. V. Petrov, A. V. Koroleva, D. V. Danilov, I. E. Kolesnikov, G. I. Bikbaeva,, J. Bachmann, and A. A. Manshina, Nanomaterials 12(1), (2022)
[3] D.V Mamonova, A.A.Vasileva, Y.V.Petrov, ... J.Bachmann, A.A.Manshina, Materials, 14(1), p. 1-14, (2021)
[4] G. Bikbaeva, A. Belhadi, D. Pankin, D. Mamonova, I. Kolesnikov, Yu. Petrov, T. Ivanova, D. Ivanov, A. Manshina, submitted to Nano-Structures & Nano-Objects.
