1. R. Todorov, T. Hristova-Vasileva, V. Katrova, A. Atanasova, G. Milushev, Electronic structure and plasmonic activity in co-evaporated Ag-In bimetallic alloys, Journal of Alloys and Compounds 897 (2022) 163253 (WOS IF = 6.2, Q1, SJR = 1.079 Q1, 2022), https://doi.org/10.1016/j.jallcom.2021.163253
2. R. Todorov, T. Hristova-Vasileva, A. Atanasova, V. Katrova, Thin Ag/Bi coatings as plasmonic material with low optical losses, Optical Materials, 124 (2022) 112040. (WOS IF = 3.900, Q2, SJR = 0.611 Q1, 2022) https://doi.org/10.1016/j.optmat.2022.112040
3. R. Todorov, T. Hristova-Vasileva, V. Katrova, V. Strijkova, A. Atanasova, G. Milushev, Formation, structure, and optical performance of AgCd/Ag5Cd8 phases in thin film form. Journal of Materials Science: Materials in Electronics, 34 (2023) 1093 (WOS IF = 2.8, Q2, SJR = 0.496 Q2, 2022) https://doi.org/10.1007/s10854-023-10522-7
4. R. Todorov, T. Hristova-Vasileva, V. Katrova, A. Atanasova, Silver and Gold Containing Compounds of p-Block Elements as Perspective Materials for UV Plasmonics, ACS Omega 8,16 (2023) 14321-14341 (WOS IF = 4.1, Q2, SJR = 0.694 Q1, 2022) https://doi.org/10.1021/acsomega.2c05943
5. V. Katrova, T. Hristova-Vasileva, A. Atanasova, V. Strijkova, R. Todorov, Optical properties of nanostructured bimetallic films from the Ag – In and Ag – Sb systems and their surface enhanced fluorescence application, Journal of Physics: Conference Series, 2240(1), 012007, 2022. (SJR = 0.183, 2022) https://doi.org/10.1088/1742-6596/2240/1/012007
6. A. Atanasova, V. Katrova, T. Hristova-Vasileva, R. Todorov, Synthesis, microstructure, and optical properties of Ag3Sn nanoparticles for plasmonic sensing applications, Proc. SPIE 11919, Translational Biophotonics: Diagnostics and Therapeutics, (2021) 1191927 (SJR = 0.694, 2021) https://doi.org/10.1117/12.2615028
7. V. Katrova, A. Atanasova, R. Todorov, T. Hristova-Vasileva, V. Strijkova, Thickness dependence of optical properties of thin Ag-Bi films and their surface plasmon-enhanced photoluminescence capability, Journal of Physics: Conference Series 2436, 012019, 2023. (SJR = 0.183, 2022) https://doi.org/10.1088/1742-6596/2436/1/012019
8. R. Todorov, V. Katrova, T. Hristova-Vasileva, G. Milushev, Structural and optical characterization of thin films from Bimetallic Au-Sb system as tunable plasmonic material for UV spectral range, Journal of Physics: Conference Series, 2436, 012023, 2023. (SJR = 0.183, 2022) https://doi.org/10.1088/1742-6596/2436/1/012023
9. R. Todorov, A. Atanasova, V. Katrova, T. Hristova-Vasileva, Surface plasmon-like properties of one-dimensional photonic crystal and its application in surface-enhanced fluorescence, Journal of Physics: Conference Series 2436, 012021, 2023. (SJR = 0.183, 2022) https://doi.org/10.1088/1742-6596/2436/1/012021
10. R. Todorov, T. Hristova-Vasileva, G. Milushev, E. Milanov, Spectroscopic ellipsometry modelling of thin Au-Sn films and nanostructures as UV plasmonics materials, Journal of Physics: Conference Series (2023) In press
11. R. Todorov, T. Hristova-Vasileva, A. Atanasova, V. Katrova, V. Strijkova, G. Milushev, E. Milanov, Optical properties of thin Ag – In films prepared byinterdiffusion in bimetallic nanolayered stacks, Journal of Physics: Conference Series 1762, 012023 2021. (SJR = 0.21, 2021) https://doi.org/10.1088/1742-6596/1762/1/012023
12. R. Todorov, T. Hristova-Vasileva, A. Atanasova, V. Katrova, G. Milushev, Structural and optical properties of Au – In films for plasmonic applications, Journal of Physics: Conference Series 1762, 012022, 2021. (SJR = 0.21, 2021) https://doi.org/10.1088/1742-6596/1762/1/012022
13. R. Todorov, T. Hristova-Vasileva, A. Atanasova, V. Katrova, Ellipsometric Characterization of Ag-Bi Films for Application as Epsilon-Near-Zero Materials, Optics InfoBase Conference Papers, Novel Optical Materials and Applications, JTu4C.5, 2020. https://doi.org/10.1364/NOMA.2020.JTu4C.5
14. V. Katrova, A. Atanasova, T. Hristova-Vasileva, R. Todorov, Application of cold clusters as a template for control of the columnar microstructure of thin silver films and their plasmonic properties, Optics InfoBase Conference Papers, Optics InfoBase Conference Papers, Frontiers in Optics, JTh4A.27, 2020. https://doi.org/10.1364/FIO.2020.JTh4A.27
15. А. Atanasova, V. Katrova, T. Hristova-Vasileva, R. Todorov, Synthesis, microstructure and optical properties of Ag3Sn nanoparticles for plasmonic sensing applications, Optics InfoBase Conference Papers, European Conferences on Biomedical Optics, EW4A.13, 2021. https://www.osa.org/en-us/meetings/topical_meetings/european_conferences_on_biomedical_optics/eposters/poster/?id=3573923
16. R. Todorov, T. Hristova-Vasileva, V. Katrova, A. Atanasova, Optical properties and UV Plasmon-Enhanced Fluorescence activity of thin Ag-In films, Optics InfoBase Conference Papers, Novel Optical Materials and Applications, JTu1A.36, 2021. https://www.osa.org/enus/meetings/osa_meetings/advanced_photonics_congress/e-posters/poster/?id=3580435
17. V. Katrova, A. Atanasova, T. Hristova-Vasileva, R. Todorov, Ultraviolet plasmonic properties of thin Ag-Sb films for optical biosensing application, Optics InfoBase Conference Papers, Nonlinear Optics Topical Meeting, NTh3A.2, 2021. https://www.osa.org/enus/meetings/topical_meetings/nonlinear_optics_(1)/e-posters/poster/?id=3602736

1. R. Todorov, T. Hristova-Vasileva A. Atanasova, V. Katrova, V. Strijkova, G. Milushev, E. Milanov, Optical properties of thin Ag – In films prepared byinterdiffusion in bimetallic nanolayered stacks, 21st International School on Condensed Matter Physics: Progress and Perspectives in Functional Materials, August 31st - September 4th, 2020 Varna, Bulgaria (устен доклад).
2. R. Todorov, T. Hristova-Vasileva, A. Atanasova, V. Katrova, G. Milushev, Structural and optical properties of Au – In films for plasmonic applications, 21st International School on Condensed Matter Physics: Progress and Perspectives in Functional Materials, August 31st - September 4th, 2020 Varna, Bulgaria (устен доклад).
3. R. Todorov, T. Hristova-Vasileva, A. Atanasova, V. Katrova, Ellipsometric Characterization of Ag-Bi Films for Application as Epsilon-Near-Zero Materials, Novel Optical Materials and Applications Part F186-NOMA, OSA Advanced Photonics Congress, 13 – 16 July 2020, Hotel Bonaventure Montréal, Montréal, Québec, Canada. Електронно участие. (постер, виртуално участие)
4. V. Katrova, A. Atanasova, T. Hristova-Vasileva, R. Todorov, Application of cold clusters as a template for control of the columnar microstructure of thin silver films and their plasmonic properties, Optics InfoBase Conference Papers, Frontiers in Optics / Laser Science OSA Technical Digest (Optical Society of America, 2020) Frontiers in Optics 2020, Washington, DC United States, 14–17 September 2020. (постер, виртуално участие)
5. В. Катрова, Р. Тодоров, Т. Христова-Василева, Оптично характеризиране на наноразмерни покрития от Ag и Ag–Sb за приложение в плазмониката, XXIII Зимен семинар “ИНТЕРДИСЦИПЛИНАРНА ФИЗИКА” на младите учени и докторанти от институтите на БАН, 08-10 декември 2020 г., Webinar.
6. А. Atanasova, V. Katrova, T. Hristova-Vasileva, R. Todorov, Synthesis, microstructure and optical properties of Ag3Sn nanoparticles for plasmonic sensing applications, European Conferences on Biomedical Optics, 20 June 2021 – 24 June 2021, OSA Virtual Event. (постер, виртуално участие)
7. R. Todorov, T. Hristova-Vasileva, V. Katrova, A. Atanasova, Optical properties and UV Plasmon-Enhanced Fluorescence activity of thin Ag-In films, Advanced Photonics Congress’2021, 26 July 2021 – 30 July 2021, OSA Virtual Event. (постер, виртуално участие)
8. V. Katrova, A. Atanasova, T. Hristova-Vasileva, R. Todorov, Ultraviolet plasmonic properties of thin Ag-Sb films for optical biosensing application, Nonlinear Optics Topical Meeting, 09 August 2021 – 13 August 2021, OSA Virtual Event. (постер, виртуално участие)
9. R. Todorov, V. Katrova, A. Atanasova, T. Hristova-Vasileva, V. Strijkova, Optical properties of thin Ag-In films as UV plasmon active materials for Surface Enhanced Fluorescence applications, 22nd International Summer School on Vacuum, Electron and Ion Technologies, VEIT’2021, 20 - 24 September 2021 Sozopol, Bulgaria. (постер) (трансформирана в електронен формат, поради COVID’19)
10. V. Katrova, T. Hristova-Vasileva, A. Atanasova, V. Strijkova, R. Todorov, Optical properties of nanostructured Ag-Sb bimetallic films and their surface enhanced fluorescence application, 22nd International Summer School on Vacuum, Electron and Ion Technologies, VEIT’2021, 20 - 24 September 2021 Sozopol, Bulgaria. (постер) (трансформирана в електронен формат, поради COVID’19)
11. R. Todorov, T. Hristova-Vasileva, V. Katrova, A. Atanasova, V. Strijkova, G. Milushev, Formation, structure and optical performance of AgCd/Ag5Cd8 phases in thin film form, 9th International Conference on Optical, Optoelectronic and Photonic Materials and Applications & 14th Europhysical Conference on Defects in Insulating Materials, Ghent Belgium, 3 July 2022 – 8 July 2022. (постер)
12. R. Todorov, T. Hristova-Vasileva, V. Katrova, A. Atanasova, Silver and gold containing compounds of p-block elements as perspective materials for plasmonics, 22nd International School on Condensed Matter Physics: State of the Art in Functional Materials & Technologies August 29th - September 2nd, 2022 Varna, Bulgaria. (поканен доклад)
13. A. Atanasova, V. Katrova, T. Hristova-Vasileva, R. Todorov, Surface plasmon-like properties of one-dimensional photonic crystal and its application in surface-enhanced luminescence, 22nd International School on Condensed Matter Physics: State of the Art in Functional Materials & Technologies August 29th - September 2nd, 2022 Varna, Bulgaria. (постер)
14. V. Katrova, A. Atanasova, R. Todorov, T. Hristova-Vasileva, V. Strijkova, Thickness dependence of optical properties of thin Ag-Bi films and their surface plasmon-enhanced photoluminescence capability, 22nd International School on Condensed Matter Physics: State of the Art in Functional Materials & Technologies August 29th - September 2nd, 2022 Varna, Bulgaria (постер).
15. R. Todorov, V. Katrova, T. Hristova-Vasileva, A. Atanasova, G. Milushev, Structural and optical characterization of thin films from Bimetallic Au-Sb system as tunable plasmonic material for UV spectral range, 22nd International School on Condensed Matter Physics: State of the Art in Functional Materials & Technologies August 29th - September 2nd, 2022 Varna, Bulgaria (постер).
16. R. Todorov, T. Hristova-Vasileva, Spectroscopic ellipsometry modelling of thin Au-Sn films and nanostructures as UV plasmonics materials. 23rd International Summer School on Vacuum, Electron and Ion Technologies, 17-22 September 2023, Sozopol, Bulgaria (постер).