University of Bucharest - Physics Department
   Dr. George Alexandru NEMNES
   MDEO-Center
   Publications    Teaching & Research
  

CURRICULUM VITAE




Personal Data

  • First names: GEORGE ALEXANDRU
  • Surname: NEMNES
  • Position:
    • Associate professor - Faculty of Physics, University of Bucharest, Romania.
    • Researcher - MDEO Research Center, Faculty of Physics, University of Bucharest, Romania.
  • Full address of permanent institution:
      University of Bucharest, Faculty of Physics
      Materials and Devices for Electronics and Optoelectronics Research Center
      077125, Magurele - Ilfov, P. O. Box MG-11, ROMANIA
      Tel. No.: +40 (0)21 457 4949/157, Fax: +40 (0)21 457 4418


Teaching:

  • 1st Semester (2020/2021):
    • Solid State Seminar/Lab (BSc III)
  • 2nd Semester (2021):
    • Spintronics (MSc. I)
    • Special Topics in Condensed Matter Systems (BSc III)
    • Numerical systems (BSc II -- FMI)
    • Numerical methods for the elecronic structure (MSc. II)

Project coordinator:

  • "Cylindrical Nanowire Transistor in the Landauer-Büttiker Formalism" CNCSIS, RP-1, September 2008   
  • "Advanced many-body spin transport and spin relaxation phenomena in nanowire systems" CNCS, PN-II-RU-PD-2011-3-0044
  • "Transport and dissipation in nano-devices - molecular dynamics and density functional theory simulations" -- HP-SEE (FP7) -- computing time
  • "Innovative teaching methodologies for the development of nanoscience education projects",

Education:

  • 1998-2001 University of Bucharest, Faculty of Physics;
  • 2001-2004 Brandenburg Technical University, Cottbus, Germany;
  • 2004-2008 Chemnitz University of Technology, Chemnitz, Germany;

Awards and academic degrees:

  • 1997 First prize - National Physics Olympics
  • 1998 First prize - National Physics Olympics
  • 2003 Ing. Phys. - University of Bucharest, Faculty of Physics;
  • 2004 Dipl. Phys. - Brandenburg Technical University, Cottbus, Germany;
  • 2005 MSc. - University of Bucharest, Faculty of Physics;
  • 2008 Dr. rer. nat. (computational physics, magna cum laude) - Chemnitz University of Technology, Chemnitz, Germany;
  • 2017 Prize of University of Bucharest Senate - Best research paper in Exact Sciences in 2017
  • 2020 Habilitation - Computational studies on advanced materials with applications to nanoelectronic and optoelectronic devices

Research Activities - Main Topics of interest:

Research Gate Profile

ResearcherID: B-7091-2011

Scientific publications

  • Journal papers:
    • G. A. Nemnes, Nicolae Filipoiu and Valentin Sipica,
      "Feature selection procedures for combined density functional theory - artificial neural network schemes",
      Physica Scripta accepted (2021)
    • T.L. Mitran and G.A. Nemnes,
      "Ground state charge density prediction in C-BN nanoflakes using rotation equivariant feature-free artificial neural networks",
      Carbon 174, 276 (2021)
    • N. Filipoiu and G.A. Nemnes,
      "Prediction of Equilibrium Phase, Stability and Stress-Strain Properties in Co-Cr-Fe-Ni-Al High Entropy Alloys Using Artificial Neural Networks",
      Metals 10, 1569 (2020)
    • G. A. Nemnes, D. Dragoman,
      "A ballistic transport model for an artificial neuron",
      Physica Stat. Sol. A 217, 1900936 (2020)
    • G. A. Nemnes, D. Dragoman, M. Dragoman,
      "Graphene bandgap induced by ferroelectric Pca21 HfO2 substrate: a first-principles study",
      Phys. Chem. Chem. Phys. 21, 15001 (2019)
    • A. G. Tomulescu, Viorica Stancu, Cristina Besleaga, Monica Enculescu, G. A. Nemnes, Mihaela Florea, V. Dumitru, L. Pintilie, Ioana Pintilie, Lucia Leonat,
      "Reticulated mesoporous TiO2 scaffold, fabricated by spraycoating, for large area perovskite solar cells",
      Energy Technol. 8, 1900922 (2019)
    • D. V. Anghel, G. A. Nemnes, A. Manolescu and Ioana Pintilie,
      "Modelling J-V hysteresis in perovskite solar cells induced by voltage poling",
      Physica Scripta 94, 125809 (2019)
    • G. A. Nemnes, T.L. Mitran, A. Manolescu,
      "Gap prediction in hybrid graphene - hexagonal boron nitride nanoflakes using artificial neural networks",
      Journal of Nanomaterials 6960787 (2019)
    • G. A. Nemnes, Daniela Dragoman,
      "Reconfigurable quantum logic gates using Rashba controlled spin polarized currents",
      Physica E 111, 13 (2019)
    • G. A. Nemnes, T.L. Mitran, A. Manolescu and Daniela Dragoman,
      "Electric and thermoelectric properties of graphene bilayers with extrinsic impurities under applied electric field",
      Physica B 561, 9 (2019)
    • G. A. Nemnes, Cristina Besleaga, A. G. Tomulescu, Lucia Nicoleta Leonat, Viorica Stancu, Mihaela Florea, A. Manolescu and Ioana Pintilie,
      "The hysteresis-free behavior of perovskite solar cells from the perspective of the measurement conditions",
      J. Mater. Chem. C 7, 5267 (2019)
    • M. T. Sultan, A. Manolescu, J. T. Gudmundsson, K. Torfason, G. A. Nemnes, I. Stavarache, C. Logofatu, V. S. Teodorescu, M. L. Ciurea, H. G. Svavarsson,
      "Enhanced photoconductivity of SiGe nanocrystals in SiO2 driven by mild annealing",
      Appl. Surf. Sci. 469, 870 (2019)
    • G. A. Nemnes, Cristina Besleaga, A. G. Tomulescu, Alexandra Palici, L. Pintilie, A. Manolescu and Ioana Pintilie,
      "How measurement protocols influence the dynamic J-V characteristics of perovskite solar cells: theory and experiment",
      Solar Energy 173, 976 (2018)
    • G. A. Nemnes, T. L. Mitran, A. Manolescu and Daniela Dragoman,
      "Electric field effect in boron and nitrogen doped graphene bilayers",
      Comput. Mater. Sci. 155, 175 (2018)
    • G. A. Nemnes, T. L. Mitran and Daniela Dragoman,
      "Ballistic transport in graphene Y-junctions in transverse electric field",
      Nanotechnology 29, 355202 (2018)
    • Alexandra Palici, G. A. Nemnes, Cristina Besleaga, L. Pintilie, D. V. Anghel, Ioana Pintilie, and A. Manolescu,
      "The Influence of the Relaxation Time on the Dynamic Hysteresis in Perovskite Solar Cells",
      EPJ Web of Conferences 173, 03017 (2018)
    • T. L. Mitran and G. A. Nemnes,
      "Helical graphite metamaterials for intense and locally controllable magnetic fields",
      RSC Adv. 7, 49041 (2017)
    • S. I. Erlingsson, A. Manolescu, G. A. Nemnes, J. H. Bardarson and D. Sanchez,
      "Reversal of thermoelectric current in tubular nanowires",
      Phys. Rev. Lett. 119, 036804 (2017)
    • G. A. Nemnes, Cristina Besleaga, Viorica Stancu, Daniela Emilia Dogaru, Lucia Nicoleta Leonat,
      L. Pintilie, K. Torfason, M. Ilkov, A. Manolescu, Ioana Pintilie,
      "Normal and inverted hysteresis in perovskite solar cells",
      J. Phys. Chem. C 121, 11207 (2017)
      (arXiv:1704.03300)
    • G. A. Nemnes, Cristina Besleaga, A. G. Tomulescu, Ioana Pintilie, L. Pintilie, K. Torfason, A. Manolescu,
      "Dynamic electrical behavior of halide perovskite based solar cells",
      Sol. Energy Mater. Sol. Cells 159, 197 (2017)
    • N. Plugaru, G. A. Nemnes, L. Filip, Ioana Pintilie, L. Pintilie, K. T. Butler and Andrei Manolescu,
      "Atomistic Simulations of Methylammonium Lead Halide Layers on PbTiO3 (001) Surfaces",
      J. Phys. Chem. C 121, 9096 (2017)
    • G. A. Nemnes, Camelia Visan, A. Manolescu,
      "Electronic and thermal conduction properties of halogenated porous graphene nanoribbons",
      J. Mater. Chem. C 5, 4435 (2017)
    • G. A. Nemnes, Sorina Iftimie, Alexandra Palici, Adela Nicolaev, T.L. Mitran, A. Radu, S. Antohe,
      "Optimization of the structural configuration of ICBA/P3HT photovoltaic cells",
      Appl. Surf. Sci. 424, 264 (2017)
    • Cristina Besleaga, Laura Elena Abramiuc, Viorica Stancu, A. G. Tomulescu, M. Sima, Liliana Trinca, N. Plugaru,
      L. Pintilie, G. A. Nemnes, Mihaiela Iliescu, H. G. Svavarsson, A. Manolescu and Ioana Pintilie,
      "Iodine Migration and Degradation of Perovskite Solar Cells Enhanced by Metallic Electrodes",
      J. Phys. Chem. Lett. 7, 5168 (2016)
    • G. A. Nemnes, Alexandra Palici and A. Manolescu,
      "Transparent boundary conditions for time-dependent electron transport in the R-matrix method with applications to nanostructured interfaces",
      Comput. Phys. Commun. 208, 109 (2016)
    • D.V. Anghel and G. A. Nemnes,
      "The role of the chemical potential in the BCS theory",
      Physica A 464, 74 (2016)
    • S. Heedt, A. Manolescu, G. A. Nemnes, W. Prost, J. Schubert, D. Grutzmacher and T. Schaepers,
      "Adiabatic Edge Channel Transport in a Nanowire Quantum Point Contact Register",
      Nano Lett. 16, 4569 (2016)
    • A. Manolescu, G. A. Nemnes, A. Sitek, T. O. Rosdahl, S. I. Erlingsson, and V. Gudmundsson,
      "Conductance oscillations of core-shell nanowires in transversal magnetic fields",
      Phys. Rev. B 93, 205445 (2016)
    • D.V. Anghel and G. A. Nemnes,
      "The application of the fractional exclusion statistics to the BCS theory--a redefinition of the quasiparticle energies",
      Physica A 458, 276 (2016)
    • T.L. Mitran, G. A. Nemnes, L. Ion, Daniela Dragoman,
      "Ballistic electron transport in wrinkled superlattices"
      Physica E 81, 131 (2016)
    • G. A. Nemnes and D. V. Anghel,
      "A drift-diffusion model based on the fractional exclusion statistics",
      J. Phys.: Conf. Series 738, 012006 (2016)
    • G. A. Nemnes, Camelia Visan, D. V. Anghel and A. Manolescu,
      "Molecular dynamics of halogenated graphene - hexagonal boron nitride nanoribbons",
      J. Phys.: Conf. Series 738, 012027 (2016)
    • Visan Camelia and G. A. Nemnes,
      "Ab Initio Investigations of Thermoelectric Effects in Graphene - Boron Nitride Nanoribbons",
      EPJ Web of Conferences 108, 02045 (2016)
    • Adela Nicolaev, T. L. Mitran, Sorina Iftimie, G. A. Nemnes,
      "Optimization of halide perovskite solar cells based on nanocolumnar ZnO",
      Sol. Energy Mater. Sol. Cells 158, 202 (2016)
    • G. A. Nemnes, C. Goehry, T. L. Mitran, Adela Nicolaev, L. Ion, S. Antohe, N. Plugaru, A. Manolescu,
      "Band alignment and charge transfer in rutile-TiO2/CH3NH3PbI3-xClx interfaces"
      Phys. Chem. Chem. Phys. 17, 30417 (2015)
    • C. Goehry, G. A. Nemnes and Andrei Manolescu,
      "Collective Behavior of Molecular Dipoles in CH3NH3PbI3",
      J. Phys. Chem. C 119, 19674 (2015)
    • G. A. Nemnes and Camelia Visan,
      "Ab initio vibrational and thermal properties of carbon allotropes: polycyclic and rectangular networks",
      Comput. Mat. Sci. 109, 14 (2015)
    • G. A. Nemnes and Camelia Visan,
      "Electron transport properties of fulgide-based photochromic switches",
      RSC Advances 5, 26438 (2015)
    • G. A. Nemnes and D. V. Anghel,
      "Glassy Behavior of Disordered Fractional Exclusion Statistics Systems",
      Rom. J. Phys. 60, 691 (2015)
    • G. A. Nemnes and Sorina Iftimie,
      "Charge localization effects and transport in dendritic nanostructures for photovoltaic applications",
      Appl. Surf. Sci. 352, 158 (2015)
    • A. A. Nila, G. A. Nemnes, A. Manolescu,
      "Ab initio investigation of optical properties in triangular graphene - boron nitride core-shell nanostructures",
      Rom. J. Phys. 60, 696 (2015)
    • A. E. Stanciu, G. A. Nemnes, A. Manolescu,
      "Thermoelectric effects in nanostructured quantum wires in the non-linear temperature regime",
      Rom. J. Phys. 60, 716 (2015)
    • T. L. Mitran, G. A. Nemnes, L. Ion and Daniela Dragoman,
      "Effects of graded distribution of scattering centers on ballistic transport",
      J. Appl. Phys. 116, 124316 (2014)
    • G.A. Nemnes and Adela Nicolaev,
      "Transport in ferrocene single molecules for terahertz applications",
      Phys. Chem. Chem. Phys. 16, 18478 (2014)
    • G.A. Nemnes and D. V. Anghel,
      "Fractional exclusion statistics in non-homogeneous interacting particle systems",
      Rom. Rep. Phys. 66, 336 (2014)
    • G.A. Nemnes and C. Visan,
      "Ab initio investigation of spin-filter effects in GaN nanowires with transitional metal impurities",
      Eur. Phys. J. Plus 128, 131 (2013)
    • D.V. Anghel, G.A. Nemnes and F. Gulminelli,
      "Equivalence between fractional exclusion statistics and self-consistent
      mean-field theory in interacting particle systems in any number of dimensions",
      Phys. Rev. E 88, 042150 (2013)
    • G.A. Nemnes and S. Antohe,
      "Spin filtering in graphene nanoribbons with Mn-doped boron nitride inclusions",
      Mater. Sci. Eng. B 178, 1347 (2013)
    • G.A. Nemnes,
      "Spin filtering effects in wurtzite and graphite-like AlN nanowires with Mn impurities",
      Journal of Nanomaterials 408475 (2013)
    • G.A. Nemnes and D.V. Anghel,
      "Fractional exclusion statistics in systems with localized states",
      J. Phys.: Conf. Series 410, 012120 (2013)
    • G.A. Nemnes,
      "Spin current switching and spin-filtering effects in Mn-doped boron nitride nanoribbons",
      Journal of Nanomaterials 748639 (2012)
    • T.L. Mitran, Adela Nicolaev, G.A. Nemnes, L. Ion, S. Antohe,
      "Magnetic behavior and clustering effects in Mn-doped boron nitride sheets",
      J. Phys.: Condens. Matter 24, 326003 (2012)
    • G.A. Nemnes, A. Manolescu, V. Gudmundsson
      "Reduction of ballistic spin scattering in a spin-FET using stray electric fields",
      J. Phys.: Conf. Series 338, 012012 (2012)
    • Adela Nicolaev, T.L. Mitran, G.A. Nemnes, L. Ion, S. Antohe
      "Ab-initio investigation of point-like defects in AlN nanowires",
      J. Phys.: Conf. Series 338, 012014 (2012)
    • G.A. Nemnes, C. Visan, S. Antohe,
      "Thermopower of atomic-sized wurtzite AlN wires",
      Physica E 44, 1092 (2012)
    • C. Visan, T.L. Mitran, Adela Nicolaev, G.A. Nemnes, L. Ion, S. Antohe,
      "Ab initio study of point-like defects influence on charge transport in AlN nanowires",
      Digest Journal of Nanomaterials and Biostructures - accepted - (2011)
    • T.L. Mitran, Adela Nicolaev, G.A. Nemnes, L. Ion, S. Antohe,
      "Ab initio vibrational and thermal properties of AlN nanowires under axial stress",
      Comput. Mat. Sci. 50, 2955 (2011)
    • L. Ion, G.A. Nemnes, C. Visan, D.E.N. Brancus, S. Antohe,
      "Electron-optical phonon interaction in core-shell nanocolumn heterostructures
      made of wurtzite-type materials",
      Digest Journal of Nanomaterials and Biostructures 6, 331-339 (2011)
    • G.A. Nemnes, D. V. Anghel,
      "Stochastic simulations for the time evolution of systems which obey generalized statistics:
      Fractional exclusion statistics and Gentile's statistics",
      J. Stat. Mech. P09011 (2010) arXiv:1007:4491
    • G.A. Nemnes, L. Ion and S. Antohe,
      "Thermo-electrical properties of nanostructured ballistic nanowires in the R-matrix formalism
      using the Implicitly Restarted Arnoldi Method",
      Physica E 42, 1613 (2010).
    • G.A. Nemnes, L. Ion and S. Antohe,
      "Self-consistent potentials and linear regime conductance of cylindrical nanowire transistors
      in the R-matrix formalism",
      J. Appl. Phys. 106, 113714 (2009).
    • G.A. Nemnes and K.H. Hoffmann,
      "Spin-box algorithm for low temperature dynamics of short range disordered Ising spin systems",
      Comp. Phys. Comm. 180, 1098-1103 (2009);
    • G.A. Nemnes and K.H. Hoffmann,
      "Dynamically relevant structural properties of short-range spin glasses and disordered ferromagnets",
      Phys. Rev. B 77, 172410 (2008);
    • G.A. Nemnes, U. Wulf and P.N. Racec,
      "Nonlinear I-V characteristics of nanotransistors in the Landauer-Büttiker formalism",
      J. Appl. Phys. 98, 084308 (2005);
    • G.A. Nemnes, U. Wulf and P.N. Racec,
      "Nano-transistors in the Landauer-Büttiker formalism",
      J. Appl. Phys. 96, 596-604 (2004);
    • P.N. Racec, E.R. Racec, G.A. Nemnes and U. Wulf,
      "Coherent leakage current in mesoscopic MIS-type capacitors",
      Materials Science in Semiconductor Processing 6, 129-135 (2003);

  • Books:
    • A. Aldea, V. Barsan: Trends in nanophysics, Springer (2010), book chapter
      G.A. Nemnes, U. Wulf, L. Ion and S. Antohe,
      "Ballistic transistors: From planar to cylindrical nanowire transistors",
      ISBN 978-3-642-12069-5 (2010);
    • Elena V. Levchenko et al.: Theory and Simulation in Physics for Materials Applications -- Cutting-Edge Techniques in Theoretical and Computational Materials Science, Springer (2020), book chapter
      T.L. Mitran and G.A. Nemnes
      "Prediction of energy gaps in graphene - hexagonal boron nitride nanoflakes using artificial neural networks",
      ISBN 978-3-030-37789-2 (2020);

  • Journal referee:
    • Journal of Applied Physics, Journal of Alloys and Compounds, Journal of Electronic Materials, ACS Combinatorial Science, Physica status solidi (b), European Physical Journal Plus, RSC Advances, Physical Chemistry Chemical Physics, Physica E Low-dimensional Systems and Nanostructures, Journal of Physics A Mathematical and Theoretical, Materials and design, Superlattices and Microstructures, The Journal of Physical Chemistry C, The Journal of Physical Chemistry Letters, Physical Review B.

  • Vice President of the Mathematical and Computational Physics section of the Romanian Society of Physics

  

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