Bulgarian Academy of Sciences appointed her in the Physical Institute (01.11.1963–23.06.1975), where she was second rank research assistant

She became a first rank assistant in the Laboratory of photoelectrical and optical phenomena in wide band semiconductors at the Institute of Solid State Physics, BAS (23.06.1975–31.12.1987)

Koparanova was an organiser of the VІІ International Meeting on photoelectrical and optical phenomena in solids

Publications

1. S. Kanev, N. Koparanova, Einflus der elektrischen Spannung auf die Prozesse im Elektrodenbereich und die Kinetik des Photo-stroms in CdS-Einkristallen, Comptes Rendus Acad. Bulg. Sci. 17(5) 431-434 (1964)

2. S. Kanev, N. Koparanova, E. Vateva, A Method for Determining the Type of Contacts Applied to Single Crystals of CdS, CdSe, etc., Physics Stat. Sol., 9(2) K87-K90 (1965)

3. N. Koparanova, K. Tsvetkova, S. Kanev, On the Photochemical Reactions in CdS.Cd.Cu Single Crystals, Bulg. Journal of Physics, 1(1) 13-20 (1974)

4. E. Vateva, N. Baltchev, I. GTeorgieva and N. Koparanova, Threshold and Memory Switching in Thin Amorphous Films of Evaporated SiO with Two Al Electrodes. – Amorphous Semiconductors Conference Proceedings, Budapest, Akademia iado (1977) 19-23

5. N. Koparanova, P. Drangazhova, Thermal and Optical Restoration of Photoelectric Sensitivity of CdS Single Crystals after Optical Degradation, Compt. Rendus Acad. Bulg. 30(7) 989-992 (1977)

6. N. Koparanova, I. Mladenov, Study of Infra Red Radiation's Restorative Action on Photoelectric Sensitivity of CdS Single Crystals, Comptes Rendus Acad. Bulg. 31(8) 963-966 (1978)

7. P ALIGN="LEFT"> N. Koparanova, I. Mladenov, V. Brunsova, On the Optical Degradation Causes of Photoconductivity of CdS.Cd.Cu Monocrystals, Scient Rep. of VIMMESS, 21(11) 85-91 (1979)

8. G. Mechenov, S. Simov, N. Koparanova, D. Genchev, V. Gancheva, Observations of CdO whiskers grown on CdS single crystals, Comptes Rendus, Acad. Bulg. 35(3) 311-314 (1982)

9. S. Simov, N. Koparanova, G. Metchenov, D. Genchev, Growth and morphology of cadmium oxide whiskers, Journal of Material Science (2) 623-633 (1983)

10. N. Koparanova, Z. Zlatev, D. Genchev, G. Popovich, Cadmium oxide whisker crystals grown by the vapour liquid solid mechanizm using various elements as growthe initiators, Journal of Optical Society of America (1994)