Results

Main results:

Simulated optical transmission/reflectance spectra of metal nanostructures. Measured optical transmittance and reflectance spectra of fabricated nanostructures. Gold nanostructured surfaces on glass/Si substrate. Plans for realizing the microfluidic SERS-EC cell. Plans for realizing the SERS-EC cuvette adapter. SERS-EC cuvette adapter model. Understanding the overall electrochemical behaviour of selected pollutants (pesticides – i.e.endosulfan) in different experimental conditions. Integrated microfluidic SERS-EC cell. SERS-EC spectrophotometer cuvette adapter. SERS spectra of thiabendazole and endosulfan. Calculated Raman spectra of thiabendazole and endosulfan. Electrochemically-assisted SERS detection approach on the fabricated nanostructures. 

Published articles:

  • A. Falamas, I. Brezestean, N. Tosa, S. Boca, C. Farcau, A simple, rapid, and low-cost approach for colloidal nanoparticle-based Surface Enhanced Raman Scattering detection of endosulfan pesticide at trace levels, Nano Express, 5, 2024, 045006.
  • A. Falamas, D. Cuibus, N. Tosa,  I. Brezestean, C. M. Muntean, K. Milenko, E. Vereshchagina, R. Moldovan, E. Bodoki, C. Farcau, Toward microfluidic SERS and EC‑SERS applications via tunable gold films over nanospheres, Discover Nano, 18 (1), 2023, 73.
  • E. Vereshchagina, K. Milenko, F. Tsige Dullo, Microfluidic Surface-Enhanced Raman Scattering Sensors based on Nanoimprint Resist for Sensitive Detection of Pesticides in Water, IEEE Sensors 2023.
  • R. Moldovan, K. Milenko, E. Vereshchagina, B.-C. Iacob, K. Schneider, C. Farcau, E. Bodoki, EC-SERS detection of thiabendazole in apple jiuce using activated screen-printed electrodes, Food Chemistry, 405 (A), 2023, 134713.
  • I. A. Brezestean, N. Tosa, A. Falamas, D. Cuibus, C. M. Muntean, A. Bende, B. Cozar, C. Berghian-Grosan, C. Farcau, Silver Nanoparticle Films Obtained by Convective Self-Assembly for Surface-Enhanced Raman Spectroscopy Analyses of the Pesticides Thaibendazole and Endosulfan, Frontiers Chemistry, 10, 2022, 915337.
  • R. Moldovan, E. Vereshchagina, K. Milenko, B.-C. Iacob, A. E. Bodoki, A. Falamas, N. Tosa, C. M. Muntean, C. Farcău, E. Bodoki, Review on combining surface-enhanced Raman spectroscopy and electrochemistry for analytical applications, Analytica Chimica Acta 1209, 2022, 339250.
  • C. Farcau, Silver film over nanospheres (AgFoN) as tri-modal plasmonic sensing platform for Surface Plasmon Resonance Spectroscopy, Surface-Enhanced Raman Scattering, and Surface-Enhanced Fluorescence, Journal of Molecular Structure, 1250 (1), 2022, 131583.
  • N. Nechita, C. Farcau, Tuning plasmons of metal-coated microsphere arrays towards optimized surface-enhanced spectroscopy, Optics Express 29(25), 2021, 42238.
  • R. Moldovan, B.-C. Iacob, C. Farcau, E. Bodoki, R. Oprean, Strategies for SERS Detection of Organochlorine Pesticides, Nanomaterials 11(2), 2021, 304.

Conference presentations:

  • Nanofabrication of controlled design plasmonic gold substrates by direct laser writing, Applied Nanotechnology and Nanoscience International Conference, 2021 (oral).
  • Plasmonic properties of metal-coated microsphere monolayers optimized for SERS applications, 13th International Conference Processes in Isotopes and Molecules, 2021 (poster).
  • Surface-enhanced Raman spectroscopy of endosulfan pesticide on silver nanoparticle films fabricated by convective self-assembly, 13th International Conference Processes in Isotopes and Molecules, 2021 (poster).
  • Metal-coated microsphere arrays: versatile nanofabrication platforms for plasmon-enhanced optical spectroscopy, 11th International Conference of the Balkan Physical Union, 2022 (oral).
  • Electrochemical MIP sensor for thiabendazole detection at indol-3-acetic acid modified gold electrode, Journées d’Electrochimie 2022 (poster).
  • Spectroelectrochemical Detection of Thiabendazole Residues in Fruit Juice, The 6th edition of International Conference on Analytical and Nanoanalytical Methods for Biomedical and Environmental Sciences, 2022 (oral).
  • EC-SERS Detection of Thiabendazole in Apple Juice Using Gold-Based Screen-Printed Electrodes, 31st Topical Meeting of the International Society of Electrochemistry, 2022 (poster).
  • Nanostructured platforms for detection of environmental pollutants by combining surface-enhanced Raman spectroscopy, electrochemistry, and microfluidics, 14th International Conference on Surfaces, Coatings and Nanostructured Materials, 2023 (oral).
  • Optimization of gold film over nanospheres (AuFoN) for SERS in aqueous environment for microfluidic SERS and EC-SERS applications, 14th International Conference on Surfaces, Coatings and Nanostructured Materials, 2023 (poster).
  • Microfluidic integration of electrochemical surface-enhanced raman scattering sensors for detection of pesticides in surface waters, 14th International Conference Processes in Isotopes and Molecules, 2023 (poster).
  • Hemisphere-void patterned gold electrodes for (EC-)SERS applications using colloidal template-directed electrodeposition, 14th International Conference Processes in Isotopes and Molecules, 2023 (oral)
  • Surface-enhanced Raman scattering detection of endosulfan pesticide using colloidal nanoparticle architectures, 14th International Conference Processes in Isotopes and Molecules, 2023 (poster).
  • Advances in electrochemically-assisted SERS sensing, 14th International Conference Processes in Isotopes and Molecules, 2023 (oral).

Patent applications:

  • Device applied to spectrophotometric cuvettes and its manufacturing process, OSIM Bucharest 2022.
  • Template-directed electrodeposition of plasmonic micro/nanostructured interconnected hemisphere-voids lattice on gold electrodes for (EC-)SERS applications, OSIM Bucharest 2024.