Dr Constantin-Paul Ganea


Laboratory of Optical Processes in Nanostructured Materials



  • Broadband Dielectric Spectroscopy study on soft matter: the dielectric properties and phase transition of the liquid crystals (0.01Hz – 20MHz); dynamics of molecules and confinement effects in composite systems containing liquid crystals; other type of composites.
  • Study of ceramic, ferroelectric materials, ferroelectric composites by broadband Dielectric Spectroscopy: the temperature influence on of dielectric permittivity; paraelectric-ferroelectic phase transition; composition dependence of Curie Temperature.
  • Characterization of materials by Thermal Analysis and FTIR measurements.

Selected publications


1. Involvement of cyan and ester groups in surface interactions of aerosil –Cyanophenyl alkylbenzoate systems with high silica density. FTIR and TG-DTA Investigations, L. Frunza, S. Frunza, I. Zgura, T. Beica, N. Gheorghe, P. Ganea, D. Stoenescu, A. Dinescu, A.Schonhals, Spectrochimica Acta Part A: Molecularand Biomolecular Spectroscopy, 75, 1228-1235, 2010;

2. Dielectric Ba(Ti1-xSnx)O3(x=0,13) Ceramics, sintered by spark plasma and conventional methods, Ghe. Aldica, M. Cernea, P. Ganea, J. Mat. Sci. 45, 26062610, 2010;

3. Electrical investigations of holmium-doped BaTiO3 derived from sol-gel Combustion, M. Cernea, C. Galassi, B. Vasile,P. Ganea, R. Radu, G. Ghita, J. Mater. Res. 25, 1057-1063, 2010;

4. Dielectric and Ferroelectric Characterization of Ba0,95Tm0,05TiO3 Ceramics Derived from Sol to Gel, M. Cernea, B. S Vasile, P. Ganea, R. Radu, V.Mihalache, A. Husanu, J. Amer. Ceram. Soc, 94, 736-741, 2011;

5. Molecular Relaxation Processes in a MOF-5 Structure Revealed by Broadband Dielectric Spectroscopy: Signature of Phenylene Ring Fluctuations, S. Frunza, A. Schonhals, L. Frunza, P. Ganea, H. Kosslick, J. Harloff, A. Schulz, J. Phys.Chem. B, 114, 12840-12846, 2010;

6. Dynamics of cyanophenyl alkylbenzoate molecules in the bulk and in a surface Layer adsorbed onto aerosil. Variation of the lengths of the alkyl chain, S. Frunza, A. Schönhals, L. Frunza, T. Beica, I. Zgura, P. Ganea, D. Stoenescu, Chem.Phys. 372, 51 60, 2010;

7. Nanostructured SiOx layers as substrates for liquid crystal local ordering. I. Functionalization to bind Bovine Serum Albumin, I. Zgura, T. Beica, S. Frunza, L.Frunza, P. Ganea, C. Negrila, F. Ungureanu, A. Nuta, A. Sorescu, I. Bunea, C.N.Zaharia, J. Optoelectron. Adv. Mat. 5, 318–323, 2011;

8. Spectroscopic analysis of the interstitial anions in some layered double Hydroxide materials, L. Frunza, N. Gheorghe, F. Iova, P. Ganea, F. Neatu, V.I. Parvulescu, Rev. Chimie (Bucuresti), 62/8, 766-772, 2011;

9. Investigation of electrical and electro-optical properties of liquid crystal/copolymer clay nanostructured systems, D. Manaila-Maximean, C. Rosu, L. Frunza, P. Ganea, D. Donescu, M. Ghiurea, Mol. Cryst. Liq. Cryst. 546/1, 143155, 2011;

10. Liquid crystal/copolymer-caly nanostructured systems: contribution to the conductivity of the electrode polarization, C.P. Ganea, D. Manaila-Maximean/Politehn. Univ. Bucharest. Sci. Bull. Ser. A Appl. Math. Phys. 73, 209-216, 2011;

11. New approach of the AC electrode polarization during the measurement of impedance spectra, C.P.Ganea, Rom. J. Phys. Vol. 57/3–4 (2012) 664–675;

12. Dielectric relaxation of pure TGS crystals, C. Mîndru, C.P. Ganea, H.V. Alexandru, J. Optoelectron. Adv. Mater. 14/1-2 (2012) 157-162;

13. Pentylcyanobifenyl as test molecule for the acid sites of powered Tinanium(IV) Oxides: sensitivity of core levels to the local structure, F. Ungureanu, A. S. Manea, L. Frunza, S. Frunza, C.P. Ganea, F. Cotorobai, L.Diamandescu, A. Schönhals, Molec. Cryst. Liq. Cryst. 562 (2012) 200-217;

14. Electrode polarization and interface effects in liquid crystal systems with mobile ions: development of a model of bipolar diffusion, C.P. Ganea, Cent. Eur.J. Phys. 11(4) 497-511, 2013;

15. Synthetic Fabrics Coated with Zinc Oxide Nanoparticles by Electroless deposition:Structural Characterization and Wetting Properties, L. Frunza, E.Matei, S. Frunza, C.P. Ganea, A. M. Vlaicu, L. Diamandescu, A. Dorogan, J.Polymer Sci.Part B: Polymer Phys. 51/9 (2013) 1427-1437;

16. Conductivity in ferroelectric transition, R. Bacsei, C. Mindru, C.P. Ganea, H.V. Alexandru, J. Optoelectron. Adv. Mater. 15/11 – 12 (2013) 1369 – 1374;

17. Polyester fabrics coated with SiOx nanoparticles by vacuum deposition at small angle. Structural characterization and wetting properties, L. Frunza, I.Zgura, M. Enculescu, C.P. Ganea, et al. J. Optoelectron. Adv. Mater. 2104, 16 /12,176-181;

18. Estimation of essential dielectric parameters in ferroelectric state of TGS Crystal, H.V. Alexandru, C. Mandru, R. Bacsei, C.P. Ganea, J. Optoelectron. Adv.Mater. 2014, 16(3/4): 457-462;

19. Peculiar aspects in ferroelectric transition of triglycine sulphate crystal, H.V. Alexandru, M. Pavelescu, C.P. Ganea,Ann. Acad. Rom. Sci. Phys. Ser. 4 (1),2014, 1-12;

20. Effects of the ionic association-dissociation and adsorption-desorption on the space charge polarization-a new theoretical approach, C.P. Ganea, Eur. Phys. J.Plus (2014) 129: art. No. 238 (12 pag.);

21. Estimation of essential dielectric parameters in ferroelectric state of TGS crystal, Alexandru, H. V.; Mindru, C.; Bacsei, R.; Ganea, C. P., JOAM, Volume: 16, Issue: 3-4, Pages: 457-462, 2014;

22. Polyester fabrics covered with ZNO particles: particle interaction with the surface shown by dielectric properties,Ganea CP, Frunza L, Zgura I, Preda N, Matei E, Frunza S, Digest Journal of Nanomaterials and Biostructures, DJNB Vol. 9, No. 4, 1493 – 1503, 2014;

23. Titanium dioxide layer deposited at low temperature upon polyester fabrics, Zgura, I.; Frunza, S.; Frunza, L.; C. P. Ganea et al. J. Optoelectron. Adv. Mater. Volume: 17  Issue: 7-8 Pages: 1055-1063, 2015;

24. Surface topography to reflectivity mapping in two-dimensional photonic crystals designed in germanium, Husanu, MA; Ganea, CP; Anghel, I; Florica, C; Rasoga, O; Popescu, DG; Applied Surface Science, 355, 1186-1191, 2015;

25. Correlation of optical reflectivity with numerical calculations for a twodimensional photonic crystal designed in Ge, Husanu, MA; Popescu, DG; Ganea, CP; Anghel, I; Florica, C; European Physical Journal D, 69, -, 2015;

26. Dielectric Properties of LDH-Type Layered Materials Containing Zn or Mg Ions: On the Non Monotonous Temperature Dependence of Relaxation Times,  Frunza, L; Frunza, S; Ganea, C P; Zgura, I; Neatu, F; Parvulescu, VI; Romanian Journal Of Information Science And Technology, 18, 312-328, 2015;

27. Dielectric and photoluminescence properties of Nd and Ga codoped-BaTiO3, prepared by sol-gel method, Cernea, M; Vasilescu, CA; Secu, M; Aldica, G; Surdu, A; Ganea, CP; Journal Of Materials Science-materials In Electronics, 27, 11371-11378, 2016;

28. Multi-wavelength Laser Irradiation of Be-C-W coatings, Avotina, L; Marcu, A; Porosnicu, C; Lungu, M; Stancalie, A; Ilie, AG; Ganea, CP; Savastru, D; Kalnacs, J; Lungu, CP; Kizane, G; Antohe, S; Digest Journal Of Nanomaterials And Biostructures, 11, 293-302, 2016;

29. Modeling the charge transfer at the electrode-ionic liquid interface in dielectric spectroscopy measurements,Ganea, CP; Journal of Molecular Liquids, 221, 422-433, 2016;

30. Dielectric spectroscopy in para-ferro transition of TGS, Ganea, C P; Mindru, C; Vineticu, N; Alexandru, HV; Ferroelectrics, 493, 165-171, 2016;

31. Rod-like cyanophenyl probe molecules nanoconfined to oxide particles: Density of adsorbed surface species, Frunza, Stefan; Frunza, Ligia; Ganea, Constantin Paul; et al./ Eur. Phys. J. Plus, Volume: 131 Issue: 1 Pages: 27-27, 2016;

32. Polyester Fabrics Covere with Amprphous Titanium Dioxide Layers Combinig Wettability Measurements and Photoinduced Hydrophulicity to assess their surface properties, Zgura, I; Frunza, S; Frunza, L; Enculescu, M; Florica, C; Cotorobai, VF; Ganea, C P; Romanian Reports In Physics, 68, 259-269, 2016;

33. Wettability by water contact angle upon the surface of wool fabrics covered with oxide nanoparticles, Birzu, M; Frunza, L; Zgura, I; Cotorobai, V F; Ganea, C P; Preda, N; Enculescu, M;Digest Journal Of Nanomaterials And Biostructures, 12, 921-931, 2017;

34. Photocatalytic activity of wool fabrics deposited at low temperature with ZnO or TiO2 nanoparticles: Methylene blue degradation as a test reaction, Funza, L; Diamandescu, L; Zgura, I; Frunza, S; Ganea, CP; Negrila, CC; Enculescu, M; Birzu, M; Catalysis  Volume: 306, Pages: 251-259, 2018;

35. Synthesis and thermal, emission and dielectric properties of liquid crystalline Eu(III), Sm(III) and Tb(III) complexes based on mesogenic 4-pyridone ligands functionalized with cyanobiphenyl groups, Chiriac, L F.;Ganea P C.; Maximean D M; Pasuk I;Circu V, J. Mol. Liq. 290 (2019), 111184; DOI:10.1016/j.molliq.2019.111184;

Hirsh index: 7.

Author or Co-Author at 48 de ISI articles, 8 as first author or corresponding author;

Total citations without self-citations: 107. (01.11.2019)


Research projects

  1.  New advanced nanocomposites. Technological development and applications, PN-III-P1 -1.2-PCCDI-2017-0871, 2018-2020 - Researcher/team member;
  2. The usage of composite materials with graphene oxide for improving the performance of building and installation elements against fire action in order to ensure the protection of life in case of fire, PN-III-P1-1.2-PCCDI-2017-0350, 2018-2020 - Researcher/team member


1. Laser Optofluidics in Fighting Multiple Drug Resistance, Editor Mihail Lucian Pascu, Cap. IX, Authors: L. Frunza, S. Frunza, C. P. Ganea, I. Zgura, Bentham Science eBooks


Patent application A01002/29-11-2018,Multilayer light sensor, Lorinczi Adam, Ganea Constantin Paul, Socol Gabriel, Zamfira Constantin Sorin, Cretu Nicolae Constantin, Popescu-Pelin Gianina Florentina, Matei Elena, Logofatu Constantin

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