A5057164541- Lightning and Electromagnetic Phenomena
- Electrical Fault Detection and Protection
- High voltage insulation and dielectric phenomena
- Graphene research and applications
- Molecular Junctions and Nanostructures
- Organic Electronics and Photovoltaics
- Thermal Analysis in Power Transmission
- Power Systems Fault Detection
- Mental Health and Psychiatry
- Organic Light-Emitting Diodes Research
- Fire effects on ecosystems
- Conducting polymers and applications
- Healthcare Decision-Making and Restraints
- Psychiatric care and mental health services
- Antenna Design and Optimization
- Suicide and Self-Harm Studies
- Ionosphere and magnetosphere dynamics
- Power Transformer Diagnostics and Insulation
- Schizophrenia research and treatment
- Psychosomatic Disorders and Their Treatments
- Vacuum and Plasma Arcs
- Advancements in Battery Materials
- Electromagnetic Compatibility and Measurements
- Carbon Nanotubes in Composites
- Mental Health Treatment and Access
University of New Mexico
2006-2025
National Technical University of Athens
2008-2025
Cyprus Institute
2023
National and Kapodistrian University of Athens
2008-2022
Senologic Hellenic Society
2022
School of Pedagogical and Technological Education
2018-2019
Helmholtz-Zentrum Berlin für Materialien und Energie
2016-2019
University of Thessaly
2017-2018
Hellenic Telecommunications and Post Commission (Greece)
2017
Humboldt-Universität zu Berlin
2012-2016
Thermally induced chemical vapor deposition (CVD) was used to study the formation of nitrogen-doped graphene and carbon films on copper from aliphatic nitrogen-containing precursors consisting C1- C2-units (hetero)aromatic ring systems. The structure quality resulting were correlated influence functional groups precursor molecules gas phase composition. They analyzed with SEM, TEM, EDX, XPS, Raman spectroscopy. presence (N-doped) confirmed by 2D mode spectra. isolated obtained reveal a high...
Chemical-vapor-deposited large-area graphene is employed as the coating of transparent substrates for growth prototypical organic n-type semiconductor perfluoropentacene (PFP). The found to cause face-on PFP in a yet unknown substrate-mediated polymorph, which solved by combining grazing-incidence X-ray diffraction with theoretical structure modeling. In contrast otherwise common herringbone arrangement single crystals and "standing" films, we report π-stacked coplanar molecules "flat-lying"...
Abstract The fundamental limits of inorganic semiconductors for light emitting applications, such as holographic displays, biomedical imaging and ultrafast data processing communication, might be overcome by hybridization with their organic counterparts, which feature enhanced frequency response colour range. Innovative hybrid inorganic/organic structures exploit efficient electrical injection high excitation density subsequent energy transfer to the semiconductor, provided that radiative...
Here we present the formation of predominantly sp(2)-coordinate carbon with magnetic- and heteroatom-induced structural defects in a graphene lattice by stoichiometric dehalogenation perchlorinated (hetero)aromatic precursors [hexachlorobenzene, C6Cl6 (HCB), pentachloropyridine, NC5Cl5 (PCP)] transition metals such as copper combustion synthesis. This route allows build-up chemistry free hydrogen oxygen compared to other pyrolytic approaches yields either nitrogen-doped or -undoped domains...
We used partially fluorinated alkyl and aromatic phosphonates as model systems with similar molecular dipole moments to form self-assembled monolayers (SAMs) on the Zn-terminated ZnO(0001) surface. The introduced surface moment allows tailoring ZnO work function tune energy levels at inorganic–organic interface organic semiconductors, which should improve efficiency of charge injection/extraction or exciton dissociation in hybrid electronic devices. By employing a wide range characterization...
Abstract A facile and efficient method based on electrochemistry for the production of graphene‐based materials electronics is demonstrated. Uncharged acetonitrile molecules are intercalated in graphite by electrochemical treatment, owing to synergic action perchlorate ions dissolved acetonitrile. Then, decomposed with microwave irradiation, which causes gas rapid exfoliation, an increase volume up 600 %. Upon further processing purification, highly dispersible nanosheets obtained that can...
Ultraviolet and X-ray photoelectron spectroscopies in combination with density functional theory (DFT) calculations were used to study the change work function (Φ) of graphene, supported by quartz, as induced adsorption hexaazatriphenylene–hexacarbonitrile (HATCN). Near edge absorption fine structure spectroscopy (NEXAFS) DFT modeling show that a molecular-density-dependent reorientation HATCN from planar vertically inclined geometry occurs upon increasing surface coverage. This, conjunction...
Abstract The realization of fully solution processed multilayer polymer light‐emitting diodes (PLEDs) constitutes the pivotal point to push PLED technology its full potential. Herein, a triple‐layer realized by combining two different deposition strategies is presented. approach allows successive more than polymeric layers without extensively redissolving already present layers. For that purpose, poly(9,9‐dioctyl‐fluorene‐co‐N‐(4‐butylphenyl)‐diphenylamine) (TFB) layer stabilized hard‐bake...
Surge arresters are installed on transmission and distribution lines in substations between phase earth order to improve the lightning performance reduce failure rates. High-energy stresses housing deterioration main factors of degradation damage surge arresters. Thus, there is need for testing monitoring electrical network's arresters, verify their good condition ability effectively protect lines. The most common method used, measurement arresters' total leakage current (with isolation...
A combination of ultraviolet and X-ray photoelectron spectroscopy, absorption first principle calculations was used to study the electronic structure at interface between strong molecular acceptor 1,3,4,5,7,8-hexafluorotetracyano-naphthoquinodimethane (F6TCNNQ) a graphene layer supported on either quartz or copper substrate. We find evidence for fundamentally different charge redistribution mechanisms in two ternary systems, as consequence insulating versus metallic character substrates....
The control of the cathode work function (WF) is essential to enable efficient electron injection and extraction at organic semiconductor/cathode interfaces in electronic devices. In this paper, ultraviolet photoelectron spectroscopy used confirm that depositing an ultrathin layer moderately air‐stable pentamethylrhodocene dimer onto various conducting electrodes, by either vacuum deposition or drop casting from solution, substantially reduces their WF less than 3.6 eV, with 2.7 eV being...
Background and aim: Mental health legislation varies considerably from one country to the other. This study aims describe characteristics of individuals who are brought in by police for psychiatric assessment involvement this procedure Greece. Method: Prospective incident books departments throughout Greece concerning involuntary admissions. These were completed officers examination. Results: In total, 2,038 assessments evaluated examined relationship demographic individuals. The main...
The voltage distribution along the non-linear resistance of metal oxide surges is great importance for their proper operation, since non-uniform potential results in higher thermal stresses varistor discs near high electrode, leading to a faster ageing at top and, consequently, downgrade arrester effectiveness and reliability or even failures. current work deals with examination medium gapless surge arresters, using an appropriate computer tool, discussing configuration that improve...
Metal oxide surge arresters are used to protect medium and high voltage systems equipment against lightning switching overvoltages. Measurements of the residual metal arrester indicate dynamic characteristics, specifically, increases as current front time descends reaches its maximum before peak. For these reasons, cannot be modeled by only a non-linear resistance, since response depends on magnitude rate rise pulse. Several frequent dependent models have been proposed, in order simulate...