Print this page

Open Laboratory on Experimental Micro and Nano Mechanics (OLEM)

OLEM is a structural unit in the Department Fluid Mechanics.


Research Topics of OLEM:

Polymer Nanocomposites with Graphene and Carbon Nanotubes (2017-2019):

Functional polymer nanocomposites will be developed and characterized that combine extraordinary properties of highly improved electrical conductivity, electromagnetic shielding, thermal conductivity and mechanical properties, due to incorporation of graphene and carbon nanotubes in polymers. Nanocomposite materials will have a potential for application in mechatronics for prototyping of details by 3D printing.


About Open Laboratory:

OLEM is established in 2009 within а Research Infrastructure Project, supported by the Bulgarian Science Fund. The Open Laboratory operates at national and international level for nanocomposite fabrication and characterization, and mechanical tests of nanomaterials at macro-, micro- and nanoscale.

OLEM has 3 laboratories:

  • Laboratory for micro and nanomechanics of materials
  • Laboratory for rheometry and thermal analysis
  • Nanotechnology Laboratory

OLEM Laboratories are well equipped for nanocomposite processing, rheology, thermal analysis, mechanical properties characterization, 3D printing.

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

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




(+359 2)


Prof. D.Sc. Rumiana Kotsilkova


405, Block 4

979 6462

Assoc. Prof. Dr. Evgeni Ivanov

427, Block 4

979 6481


Assist. Prof. Ivanka Petrova

429, Block 4

979 6407

Assist. Prof.Verislav Angelov

429, Block 4

979 6407

Assist. Prof. Hristiana Velihkova

PhD student

429, Block 4

979 6407

Assist. Prof. Polya Angelova

PhD student

427, Block 4 979 6481

Assist. Prof. Radost Ivanova

429, Block 4 979 6407

Peter Todorov -PhD student

429, Block 4 979 6407

Аssociated members

Assoc. Prof. Dr. Antonia Topliyska

405, Block 4

979 6462

Recent Publications of OLEM team:

Books and chapters of books:

1. E. Ivanov, R. Kotsilkova. Ch. 17: Reinforcement Effects of Carbon Nanotubes in Polypropylene: Rheology, Structure, Thermal Stability, and Nano, Micro and Macromechanical Properties. Handbook of Nanoceramic and Nanocomposite Coatings and Materials. (Eds. A. Makhlouf, D. Scharnweber) Elsevier, 2015, 357-388,

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: 978-90-04-20737-0.

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. Kavardzhikov, 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. Kavardzhikov, L. Parashkevova, A. Baltov), Sci. Series, Bulgarian Academy of Sciences, Part IV, Ch.3 (2012), 287-326,  ISSN: 1314-3034.

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

Articles in peer review journals:

6. R. Kotsilkova, P. Todorov, E. Ivanov, T. Kaplas, Y. Svirko, A. Paddubskaya, P. Kuzhir. Mechanical properties investigation of bilayer graphene/PMMA thin films at macro, micro and nanoscale. Carbon 100 (2016) 355-366. IF 6.196

7. A. Paddubskaya · N. Valynets · P. Kuzhir · K. Batrakov · S. Maksimenko · R. Kotsilkova · H. Velichkova · I. Petrova et al. Electromagnetic and thermal properties of three-dimensional printed multilayered nano-carbon/poly(lactic) acid structures. Journal of Applied Physics 119, (2016) 135102, IF 2.183,

8. I. Petrova, R. Kotsilkova, E. Ivanov, et al. Nanoscale reinforcement of polypropylene composites with carbon nanotubes and clay: Dispersion state, electromagnetic and nanomechanical properties. Polymer Engineering & Science, 56 (3) (2016) 269–277. IF 1.52

9. 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.

10. 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.

11. 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.

12. 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.

13. 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.

14. 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.

15. 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

16. 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).

17. 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.

18. 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.

19. 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.

20. 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,

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


Modified date:14-01-2017