Title:
Assistant Professor
Division:
The Condensed Matter Division
Office:
Address:
Phone:
+30 2610 996066, +30 2610 997453
Email:
pkara@upatras.gr
Hours Availability:
Courses

Short Bio
Research Activities
  1. Panagiota K. Karahaliou, Alexandros G. Vanakaras, and Demetri J. Photinos, Tilt order parameters, polarity, and inversion phenomena in smectic liquid crystals, Phys Rev E, Vol. 65 , 031712, 2002
  2. Sergio Diez, David A. Dunmur, M. Rosario De La Fuente, Panagiota K. Karahaliou, Georg Mehl, Thomas Meyer, Miguel Angel Perez Jubindo, Demetri J. Photinos, Dielectric studies of a laterally-linked siloxane ester dimer, Liquid Crystals, Vol. 30, 1021-1030, 2003
  3. M. Theodoropoulou, P.K. Karahaliou, C.A. Krontiras, S.N. Georga, N. Xanthopoulos, M.N. Pisanias, C. Tsamis, A. G. Nassiopoulou, Transient and ac electrical transport under forward and reverse bias conditions in aluminum/porous silicon/p-cSi structures, J. Appl. Phys., Vol. 96, 7637, 2004
  4. P. K. Karahaliou, M. Theodoropoulou, C. A. Krontiras,a) N. Xanthopoulos, S. N. Georga, M. N. Pisanias, M. Kokonou, A. G. Nassiopoulou, A. Travlos , Transient and alternating current conductivity of nanocrystalline porous alumina thin films on silicon, with embedded silicon nanocrystals, J. Appl. Phys., Vol. 95, 2776, 2004
  5. M. Theodoropoulou, P.K. Karahaliou, S.N. Georga, C.A. Krontiras, M.N. Pisanias, M. Kokonou and A. G. Nassiopoulou, Interface traps density of anodic porous alumina films of different thicknesses on Si, Journal of Physics: Conference Series 10, 222–225, 2005
  6. Panagiota K. Karahaliou, Alexandros G. Vanakaras, and Demetri J. Photinos, On the molecular theory of dimeric liquid crystals, Liquid Crystals, Vol. 32 , 1397–1407, 2005
  7. M. Theodoropoulou, P.K. Karahaliou, S.N. Georga, C.A. Krontiras, M.N. Pisanias, M. Kokonou and A.G. Nassiopoulou, Thin Porous Anodic Alumina Films: Interface Trap Density Determination, Ionics 11, 237, 2005
  8. G.C. Psarras, A. Soto Beobide, G.A. Voyatzis, P.K. Karahaliou, S.N. Georga, C.A. Krontiras, J. Sotiropoulos, Dielectric and Conductivity Processes in Poly(ethylene terephthalate) and Poly(ethylene naphthalate) Homopolymers and Copolymers, Journal of Polymer Science: Part B: Polymer Physics, Vol. 44, 3078–3092, 2006
  9. Panagiota K. Karahaliou, Paul H. J. Kouwer, Thomas Meyer, Georg H. Mehl and Demetri J. Photinos, Columnar phase structures of an organic–inorganic hybrid functionalized with eight calamitic mesogens, Soft Matter 3, 857–865, 2007
  10. G.A. Kontos, A.L. Soulintzis, P.K. Karahaliou, G.C. Psarras, S.N. Georga, C.A. Krontiras, M.N. Pisanias, Electrical relaxation dynamics in TiO2 – polymer matrix composites, eXPRESS Polymer Letters, Vol.1, 781–789, 2007
  11. G.C. Psarras, K.G. Gatos, P.K. Karahaliou, S.N. Georga, C.A. Krontiras, J. Karger-Kocsis, Relaxation phenomena in rubber/layered silicate nanocomposites, eXPRESS Polymer Letters, Vol.1, 837–845, 2007
  12. Panagiota K. Karahaliou, Paul H. J. Kouwer, Thomas Meyer, Georg H. Mehl and Demetri J. Photinos, Long- and Short-Range Order in the Mesophases of Laterally Substituted Calamitic Mesogens and their Radial Octapodes, J. Phys. Chem. B 112, 6550–6556, 2008
  13. S. D. Peroukidis, P. K. Karahaliou, A. G. Vanakaras & D. J. Photinos, Biaxial nematics: symmetries, order domains and fieldinduced phase transitions, Liquid Crystals, Vol. 36, 727–737, 2009
  14. A. SOULINTZIS, G. KONTOS, P. KARAHALIOU, G.C. PSARRAS, S.N. GEORGA, C.A. KRONTIRAS, Dielectric Relaxation Processes in Epoxy Resin—ZnO Composites, Journal of Polymer Science: Part B: Polymer Physics, Vol. 47, 445–454, 2009
  15. Panagiota K. Karahaliou, Alexandros G. Vanakaras, and Demetri J. Photinos, Symmetries and alignment of biaxial nematic liquid crystals, J. Chem. Phys. 131, 124516, 2009
  16. A. KALINI, K.G. GATOS, P.K. KARAHALIOU, S.N. GEORGA, C.A. KRONTIRAS, G.C. PSARRAS, Probing the Dielectric Response of Polyurethane/Alumina Nanocomposites, Journal of Polymer Science: Part B: Polymer Physics, Vol. 48, 2346–2354, 2010
  17. Georgios C. Psarras, Suchart Siengchin, Panagiota K. Karahaliou, Stavroula N. Georga, Christoforos A. Krontiras and Jozsef Karger-Kocsis, Dielectric relaxation phenomena and dynamics in polyoxymethylene/ polyurethane/alumina hybrid nanocomposites, Polym Int 60 , 1715–1721, 2011
  18. P. K. Karahaliou, P. Svarnas, S. N. Georga, N. I. Xanthopoulos, D. Delaportas, C. A. Krontiras, I. Alexandrou, CuO/Ta2O5 core/shell nanoparticles synthesized in immersed arc-discharge: production conditions and dielectric response, J Nanopart Res 14, 1297, 2012
  19. P. K. Karahaliou, N. Xanthopoulos, C. A. Krontiras and S. N. Georga, Dielectric response and ac conductivity analysis of hafnium oxide nanopowder, Phys. Scr. 86 , 065703, 2012
  20. P.K. Karahaliou, A.P. Kerasidou, S.N. Georga, G.C. Psarras, C.A. Krontiras, J. Karger-Kocsis, Dielectric relaxations in polyoxymethylene and in related nanocomposites: Identification and molecular dynamics, Polymer 55 , 6819-6826, 2014
  21. A. P. Kerasidou, P. K. Karahaliou, N. I. Xanthopoulos, P. Svarnas1 S. N. Georga, C. A. Krontiras, D. Delaportas, Electrical Characteristics of Al2O3 and Ta2O5 Nanoparticles Synthesized by DC Anodic Arc-discharge in Water, IEEE Transactions on Dielectrics and Electrical Insulation Vol. 21, 230-235, 2014
  22. Georgia N. Tomara, Ariadni P. Kerasidou, Anastasios C. Patsidis, Panagiota K. Karahaliou, Georgios C. Psarras, Stavroula N. Georga, Christoforos A. Krontiras, Dielectric response and energy storage efficiency of low content TiO2-polymer matrix nanocomposites, Composites: Part A 71 , 204–211, 2015
  23. E. Ramou, Z. Ahmed, C. Welch, P. K. Karahaliou and G. H. Mehl, The stabilisation of the Nx phase in mixtures, Soft Matter 12, 888-899, 2016
  24. G.N. Tomara, P.K. Karahaliou, G.C. Psarras, S.N. Georga, C.A. Krontiras, S. Siengchin, J. Karger-Kocsis , Dielectric relaxation mechanisms in polyoxymethylene/polyurethane/layered silicates hybrid nanocomposites, European Polymer Journal, Vol. 95, 304-313, 2017
  25. Efthymia Ramou, Chris Welch, James Hussey, Ziauddin Ahmed, Panagiota K. Karahaliou & Georg H. Mehl, The induction of the Ntb phase in mixtures, LIQUID CRYSTALS, 45, 13–15, 1929–1935 (2018). Invited Article
  26. GN Tomara, PK Karahaliou, DL Anastassopoulos, SN Georga, CA Krontiras, J Karger‐Kocsis, Effect of moisture and filler content on the structural, thermal and dielectric properties of polyamide‐6/boehmite alumina nanocomposites, Polymer International, 68(5), pp. 871-885 (2019).
  27. Varouti, E.Devlin, Y.Sanakis, M.Pissas,C.Christides, G.N. Tomara, P.K. Karahaliou, S.N. Georga, C.A. Krontiras, A systematic Mössbauer spectroscopy study of Y3Fe5O12 samples displaying different magnetic ac-susceptibility and electric permittivity spectra, Journal of Magnetism and Magnetic Materials, 495, 165881 (2020).
  28. Evangelia E Zavvou, Panagiota K Karahaliou, Stavroula N Georga and Christoforos A Krontiras, Crystallization Behavior and Dielectric Response of Melt Crystallized PLLA/TiO2 Bio Nanocomposites, Modern Concepts in Material Science, 3, DOI: 10.33552/MCMS.2021.03.000572 (2021).
  29. Evangelia E. Zavvou, Panagiotis C. Tsaousis, Aimilia A. Barmpaki, Ioannis Iliopoulos, Panagiota K. Karahaliou, Stavroula N. Georga, Christoforos A. Krontiras, Time and frequency domain dielectric spectroscopy for in‑situ and ex‑situ determination of amorphous fractions of isothermally cold‑crystallized Polylactic acid, Journal of Polymer Research, 29, 284 (2022).
  30. Aimilia A. Barmpaki, Evangelia E. Zavvou, Charalampos Drivas, Konstantinos Papapetros, Labrini Sygellou, Konstantinos S. Andrikopoulos, Stella Kennou, Nikolaos D. Andritsos, Aris Giannakas, Constantinos E. Salmas, Athanasios Ladavos, Panagiotis Svarnas, Panagiota K. Karahaliou, Christoforos A. Krontiras, Atomic layer deposition of ZnO on PLA/TiO2 bionanocomposites: Evaluation of surface chemistryand physical properties toward food packaging applications, J Appl Polym Sci., 140:e54465 (2023).
  31. Evangelia E. Zavvou, Efthymia Ramou, Ziauddin Ahmed, Chris Welch, Georg H. Mehl, Alexandros G. Vanakaras and Panagiota K. Karahaliou, Dipole-dipole correlations in the nematic phases of symmetric cyanobiphenyl dimers and their binary mixtures with 5CB, Soft Matter, DOI: 10.1039/D3SM01017A