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Rumiana Kotsilkova

Position: Full Professor, D.Sc, PhD

Founder and former head of OLEM


Department: Fluid Mechanics

Open Laboratory of Experimental Micro and Nano Mechanics (OLEM)

Room number: 405

Phone: +359 2 979 6462





Scientific degrees, institution, year:

  • Professor, BAS, 2007

  • Doctor of Sciences, BAS, 2005

  • Invited Professor at Yamagata University, Venture Business Laboratiry, Yonesawa, Japan, 2003

  • Visiting Professor at the Toyota Technological Institute, JSPS Fellowship, Nagoya, Japan, 1997

  • Associate Professor, BAS, 1992

  • Post Doc. Alexander von Humboldt Fellowship, Universität Karlsruhe, Germany, 1988-1990

  • PhD, BAS, 1983

Fields of Research:


Polymer nanocomposites design and characterization. Aiging and Recycling of polymers. Reinforcement of polymers with nanoparticles of graphene, carbon nanotubes, nanoclays, noble metals and metal oxides. Rheological control on nanocomposite technology. Processing-structure-properties relationships. Interfacial and size phenomena. Structure and morphology at the nanoscale. Micro and nano-mechanical properties related to the materals structure. 3D printing and additive manufacturing.

Extended Information

120 Publications in peer review journals and conference communications.

2300 Citations

h-index 26   i10-index 47


Recent Publications:

Books and Chapters:

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) Elsevier2015, 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


Selected Publications:

1. R.Kotsilkova, S. Tabakova, R.Ivanova. Mechanics of Time-Dependent Materials 2021

2. R.Kotsilkova, P. Angelova et al. Coatings 2019. 9(6) 359

3. R. Kotsilkova, E. Ivanov, P. Todorov, I. Petrova, N. Volynets, A. Paddubskaya, P. Kuzhir, V. Uglov, I. Biró, K. Kertész, G. I. Márk, and L. P. Biró. Mechanical and electromagnetic properties of 3D printed hot pressed nanocarbon/poly(lactic) acid thin films. J. Appl. Phys. 121, 064105 (2017); doi: 10.1063/1.4975820,

4. A. Paddubskaya, N. Valynets, P. Kuzhir, K. Batrakov, S. Maksimenko, R. Kotsilkova, H. Velichkova, I. Petrova, I. Biró, K. Kertész, G. I. Márk, Z. E. Horváth, and L. P. Biró. Electromagnetic and thermal properties of three-dimensional printed multilayered nano-carbon/poly(lactic) acid structures. Journal of Applied Physics 119, 135102 (2016); doi: 10.1063/1.4945576,

5. R. Kotsilkova, P. Todorov, E. Ivanov, T. Kaplas, Y. Svirko, A. Paddubskaya, P. Kuzhir. Mechanical properties investigation of bilayer graphene/poly(methyl methacrylate) thin films at macro, micro and nanoscale. Carbon, 100, 2016, 355-366 (ISSN: 0008-6223),

6. I. Petrova, R. Kotsilkova, E. Ivanov, P. Kuzhir, D. Bychanok, K. Kouravelou, Th. Karachalios, A. Soto Beobide, G. Voyiatzis, D. Codegoni, F. Somaini, L. Zanotti. Nanoscale reinforcement of polypropylene composites with carbon nanotubes and clay: dispersion state, electromagnetic and nanomechanical properties. Polymer Engineering & Science, Vol. 56 (3), 269-277, 2016 (Online ISSN: 1548-2634),


Participation in EU Projects

Project Coordinator:

1. H2020-Graphene 3D (2017-2022)" Multifunctional graphene-based nanocomposites with robust electromagnetic and thermal properties for 3D printing applcation'

PI and Team leader:

1. H2020-FET-Graphene Flagship (2014-2023)

2. Nano-XCT (FP7-NMP) "Compact X-ray computed tomography system for non destructive characterization of nano materials" (01.05. 2012-2015)

3. BY-NanoERA - (FP7-INCO) "Industrial developments of applied nanoelecronics", (01.11.2010- 30.10.2013)

4. Napolynet (FP7- NMP) "Setting up research ­intensive clusters across the EU on characterization of polymer

nanostructures" (01.04.2008-31.03.2011г)

5. EC-FP7-NMP1-TeAm “Improving the Services of the NMP-NCP Network Trough Trans-national Activities”

(01.04.2009 - 30.09. 2011).

6. Industrial Project with Huntsman Polyurethanes, Belgium "Rheology of Nanoclay Dispersions" (2011-2013)


Coordination of national projects

1. OЛEM (DO-02-52) "Set up of Open Laboratory on experimental micro and nanomechanics of materials" -

Research Infrastructure project, supported by Science Fund of Bulgaria (2009-2011)

2. Multifunctional polymer nanocompositeS with CNTs and alumina for engineering applications. Bilateral projects BAS-CNR, Italy (2007-2009)

3. New approach for design of polymer nanocomposites reinforced with CNTs. Bilateral projects BAS-CNR, Italy (2010-2012

4. Structure and nanomechanics of nanoreinforced polymer composites. Bilateral projects BAS-CNR, Italy (2013-2015).



Humboldt Club, Bulgaria


JSPS, Japan grant (1997)

Alexander von Humboldt, Germany Fellowship (1988-2000)

Donation of rheology equipment from Alexander von Humboldt Stiftung (1990, 2003)


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Modified date:13-08-2022