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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 1 and Block 4, 1113 Sofia, Bulgaria.






Prof. D.Sc. Rumiana Kotsilkova - Head

405, Block 4


Assoc. Prof. Dr. Evgeni Ivanov

224, Block 1

979 2479
979 2461
979 3905


Ivanka Petrova – PhD student

205, Block 1

979 2423

Verislav Angelov – PhD student

204, Block 1

979 2446

Peter Todorov, Res. Assoc.

205, Block 1

979 2423

Hristiana Velichkova – Res. Assoc.

224, Block 1

979 2461


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

  2. 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 13: 978-9-00-420738-7

  3. 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. Kavardjikov, L. Parashkevova, A. Baltov), Sci. Series, Bulgarian Academy of Sciences, Part II, Ch.1 (2012), 51-90, ISSN: 1314-3034

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

  5. 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, (

  6. Ivanov E, Ienny P, Leger R, Caro-Bretelle A. S, Kotsilkova. Strain Localisation in iPP/MWCNT Nanocomposites Using Digital Image Correlation. Strain, ISSN: 00392103 (

  7. 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, (Published online before print May 10, 2012, doi:10.1177/0892705712445037) ISSN: 0892-7057 (

  8. 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. November 2012, 1056-1063, ISSN: 1941-4900, (

  9. 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, 431–442, ISSN: 1099-0488.

  10. Ivanov E, Kotsilkova R, Krusteva E. Effect of Processing on Rheological Properties and Structure Development of Epoxy/MWCNT Nanocomposites. J Nanopart Res (2011) 13:3393–3403, ISSN: 1388-0764, (

  11. 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,(

  12. Kotsilkova R., E. Ivanov, E. Krusteva, C. Silvestre, S. Cimmino, D. Duraccio. Isotactic Polypropylene Composites Reinforced with Multiwall Carbon Nanotubes. Part 2. Enhancement in Thermal and Mechanical Properties Related to the Structure. J. Applied Polymer Sci. (2010) 115, 3576–3585, ISSN: 0021-8995 (

  13. 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

  14. 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

  15. 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.

  16. 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

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

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

Modified date:11-07-2014