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Open Laboratory on Experimental Micro and Nano Mechanics (OLEM)

OLEM is a structural unit in the Research Field “Fluid Mechanics”.

Research Topics of OLEM:

Multifunctional polymer nanocomposites with graphene and carbon nanotubes: rheological, micro and nanomechanical study of reinforcing effects of nanofillers in polymers

OLEM is established in 2009 within the Research Infrastructure Project (DO-02-53), supported by the National Science Fund of Bulgaria. The Open Laboratory operates at national and international level for characterization and fine analysis of nanomaterials for research and industrial needs.

OLEM is an attractive base for training of young researchers, students and engineers from the country and abroad, who gain experience in advanced techniques for nanomaterials characterization.

OLEM address is Acad. G. Bonchev Str., Block 4, 1113 Sofia, Bulgaria.






Prof. D.Sc. Rumiana Kotsilkova - Head

405, Block 4


Assoc. Prof. Dr. Evgeni Ivanov

427, Block 4

979 6481


Asst. Ivanka Petrova – PhD student

429, Block 4

979 6407

Asst. Verislav Angelov – PhD student

429, Block 4

979 6407

Asst. Petar Todorov - PhD student

429, Block 4

979 6407

Asst. Hristiana Velichkova

429, Block 4

979 6407


Books and chapters of books:

1. Kotsilkova R, Ivanov E, Krusteva E, Silvestre C, Cimmino S, Duraccio D. Evolution of rheology, structure and properties around the rheological flocculation and percolation thresholds in polymer nanocomposites. In: “Ecosustainable Polymer Nanomaterials for Food Packaging” (Silvestre C, Cimmino S, Eds), Taylor & Francis Books, Inc., Ch.3  (2013)pp. 55-86, ISBN: 978-90-04-20737-0.


2. Kotsilkova R, E. Ivanov, E. Krusteva. Polymer Nanocomposites of Epoxy Resin and Multiwall Carbon Nanotubes: Processing-Structure-Properties Relationships. In:  Mechanics of Nanomaterials and Nanotechnology (Eds. V. Kavardzhikov, L.  Parashkevova, A. Baltov), Sci. Series,  Bulgarian Academy of Sciences, Part II, Ch.1  (2012), 51-90,  ISSN: 1314-3034.


3. Ivanov E, I. Borovanska, B. Milosheva, R. Kotsilkova. Experimental Nano and Micro Mechanics of Nanostructured Materials. In: Mechanics of Nanomaterials and Nanotechnology  (Eds. V. Kavardzhikov, L. Parashkevova, A. Baltov), Sci. Series, Bulgarian Academy of Sciences, Part IV, Ch.3 (2012), 287-326,  ISSN: 1314-3034.


4. R Kotsilkova. Thermoset nanocomposites for engineering applications, Smithers Rapra Publishing, 2007,pp. 1-326, ISBN: 978-1-84735-063-3



5. Rumiana Kotsilkova, Evgeni Ivanov, Dmitry Bychanok, Alesya Paddubskaya, Marina Demidenko, Jan Macutkevic, Sergey Maksimenko, Polina Kuzhir. Effects of  Sonochemical Modification of Carbon Nanotubes on Electrical and Electromagnetic  Shielding Properties of Epoxy Composites. Composites Science and Technology 106  (2015) 85–92, (ISSN: 0266-3538), IF 3.63.


6. Verislav Angelov, Hristiana Velichkova, Evgeni Ivanov, Rumiana Kotsilkova, Marie- Hellene Delville, Michela Cangiotti, Alberto Fattori, Maria Otaviani. EPR and Rheological Study of Hybrid Interfaces in Gold-Clay-Epoxy Nanocomposites. Langmuir, 2014, 30  (44), pp 13411–13421, (Print Edition ISSN: 0743-7463; Web Edition ISSN: 1520- 5827), IF 4.384.


7. E. Ivanov, I. Petrova, R. Kotsilkova, V. Mihailova. Epoxy/Multi Wall Carbon Nanotube Composites – Structure, Viscoelastic and Nanomechanical Properties. Nanoscience and Nanotechnology Letters, Volume 6, Number 7, 2014, pp. 624-629(6), (ISSN: 1941- 4900 (Print); EISSN: 1941-4919 (Online)), IF 1.44.


8. R. Kotsilkova, E. Ivanov, D. Bychanok, A. Paddubskaya, P. Kuzhir. Effect of matrix viscosity on rheological and microwave properties of polymer nanocomposites with  multiwall carbon nanotubes. Journal of Theoretical and Applied Mechanics, 2014, vol.  44, № 2, 83-96.


9. Ivanov E, Ienny P, Leger R, Caro-Bretelle A. S, Kotsilkova R. Strain Localisation in iPP/MWCNT Nanocomposites Using Digital Image Correlation. Strain, ISSN: 00392103, Strain (2014) 50, 37–47, IF 0.916.


10. Droval G, Aranberri I, Germán L, Ivanov E, Dimitrova E, Kotsilkova R, Verelst M, Dexpert-Ghys J. Thermal and rheological characterization of antibacterial  nanocomposites: Poly(amide) 6 and low-density poly(ethylene) filled with zinc oxide.  Journal of Thermoplastic Composite Materials, Vol. 27, Issue 2, 2014, Pages 268-284  (ISSN: 0892-7057), IF 1.134.


11. P. Kuzhir, A. Paddubskaya, A. Plyushch, N. Volynets, S. Maksimenko, J. Macutkevic, I. Kranauskaite, J. Banys,  E. Ivanov, R. Kotsilkova, A. Celzard, V. Fierro, J. Zicans, T. Ivanova, R. Merijs Meri, I. Bochkov, A. Cataldo, F. Micciulla, S. Bellucci,  Ph. Lambin. Epoxy composites filled with high surface area-carbon fillers: Optimization of  electromagnetic shielding, electrical, mechanical, and thermal properties. Journal of  Applied Physics, 114, 164304 (2013) ISSN: 0021-8979, IF 2.22. ver=pdfcov


12. I. Petrova, E. Ivanov, R. Kotsilkova, Y. Tsekov, V. Angelov. Applied Study on Mechanics of Nanocomposites with Carbon Nanofillers. Journal of Theoretical and Applied  Mechanics, Sofia, 2013, vol. 43, № 3, pp. 67-76 (ISSN 0861-6663).


13. Kotsilkova R, Ivanov E, Michalova V. Role of Surface Functionalisation of Multiwall Carbon Nanotubes on Nanomechanical and Electrical Properties of Epoxy  Nanocomposites. Nanoscience and Nanotechnology Letters (Special Issue, Ed. St.  Belluchi), American Sci Publ., Vol. 4, 11, 2012, pp. 1056-1063, ISSN: 1941-4900, IF  0.89.


14. E. Ivanov, R. Kotsilkova, E. Krusteva, E. Logakis, A. Kyritsis, P. Pissis, C. Silvestre, D. Duraccio, M. Pezzuto. Effects of Processing Conditions on Rheological, Thermal and  Electrical Properties of Multiwalled Carbon Nanotube/Epoxy Resin Composites. Journal of  Polymer Science Part B: Polymer Physics, 2011, 49, 6, 431–442, ISSN: 1099-0488, IF  1.531.


15. Ivanov E, Kotsilkova R, Krusteva E. Effect of Processing on Rheological Properties and Structure Development of Epoxy/MWCNT Nanocomposites. Journal of Nanoparticle Research (2011) 13(8), 3393–3403, ISSN: 1388-0764, IF 3.287.


16. Kyritsis A, Vikelis G, Maroulas P, Pissis P, Milosheva B, Kotsilkova R, Toplijska A, Silvestre C, Duraccio D. Polymer Dynamics in Epoxy/Alumina Nanocomposites Studied  by Various Techniques. Journal of Applied Polymer Sci (2011) Vol. 121, 3613–3627,  ISSN: 0021-8995,


17. Kotsilkova R., E. Ivanov, E. Krusteva, C. Silvestre, S. Cimmino, D. Duraccio. Isotactic Polypropylene Composites Reinforced with Multiwall Carbon NanotubesPart 2. Thermal  and Mechanical Properties Related to the Structure. Journal of Applied Polymer Science  (2010) 115, 3576–3585, ISSN: 1097-4628, IF 1.24.


18. R Kotsilkova, D Fragiadakis, P Pissis. Reinforcement effect of carbon nanofillers in an epoxy resin system: rheology, molecular dynamics, and mechanical studies. Journal of Polymer Science Part B: Polymer Physics. 2005, 43 (5), 522-533. ISSN:1099-0488


19. R Kotsilkova. Processing–structure–properties relationships of mechanically and thermally enhanced smectite/epoxy nanocomposites. Journal of Applied Polymer  Science. 2005, 97 (6), 2499- 2510, ISSN: 1097-4628


20. R Kotsilkova, D Nesheva, I Nedkov, E Krusteva, S Stavrev. Rheological, electrical, and microwave properties of polymers with nanosized carbon particles. Journal of Аpplied polymer science. 2004, 92 (4), 2220-2227, ISSN: 1097-4628


21. A Kanapitsas, P Pissis, R Kotsilkova. Dielectric studies of molecular mobility and phase morphology in polymer–layered silicate nanocomposites. Journal of non-crystalline  solids. 2002, 305 (1), 204-211. ISSN: 0022-3093


22. R Kotsilkova. Rheology–structure relationship of polymer/layered silicate hybrids, Mechanics of Time-Dependent Materials. 2002, 6 (3), 283-300, ISSN: 1385-2000


23. R Kotsilkova, V Petkova, Y Pelovski. Thermal analysis of polymer-silicate nano- composites, 2001, 64 (2), 591-598, ISSN: 1388-6150


Modified date:22-02-2015