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:

Alexandra Falamas, Denisa Cuibus, Nicoleta Tosa,  Ioana Brezestean, Cristina M. Muntean, Karolina Milenko, Elizaveta Vereshchagina, Rebeca Moldovan, Ede Bodoki, Cosmin Farcau, Toward microfluidic SERS and EC‑SERS applications via tunable gold films over nanospheres, Discover Nano, 18 (1), 2023, 73.

Rebeca Moldovan, Karolina Milenko, Elizaveta Vereshchagina, Bogdan-Cezar Iacob, Kenneth Schneider, Cosmin Farcau, Ede 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, 10:915337, 2022, doi: 10.3389/fchem.2022.915337.

Rebeca Moldovan, Elizaveta Vereshchagina, Karolina Milenko, Bogdan-Cezar Iacob, Andreea Elena Bodoki, Alexandra Falamas, Nicoleta Tosa, Cristina M. Muntean, Cosmin Farcău, Ede Bodoki, Review on combining surface-enhanced Raman spectroscopy and electrochemistry for analytical applications, Analytica Chimica Acta 1209, 2022, 339250. 

Cosmin 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.

Narcisa Nechita, Cosmin Farcau, Tuning plasmons of metal-coated microsphere arrays towards optimized surface-enhanced spectroscopy, Optics Express 29(25), 2021, 42238.

Rebeca Moldova, Bogdan-Cezar Iacob, Cosmin Farcau, Ede Bodoki, Radu 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.