Browsing Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering by Author "Athanasopoulos, G. I."
Now showing items 1-18 of 18
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Article
Aerial Oxidation of a VIV-Iminopyridine Hydroquinonate Complex: A Trap for the VIV-Semiquinonate Radical Intermediate
Stylianou, M.; Drouza, C.; Giapintzakis, John; Athanasopoulos, G. I.; Keramidas, A. D. (2015)The reaction of 2,5-bis[N,N′-bis(2-pyridyl-aminomethyl)aminomethyl]-p-hydroquinone (H2bpymah) with VO2+ salts in acetonitrile or water at a low pH (2.2-3.5) results in the isolation of [VIV(O)(Cl)2(μ-bpymah)], the ...
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Article
Effect of microstructure on the thermoelectric performance of La1−xSrxCoO3
Viskadourakis, Z.; Athanasopoulos, G. I.; Kasotakis, E.; Giapintzakis, John (2016)We present a case where the microstructure has a profound effect on the thermoelectric properties of oxide compounds. Specifically, we have investigated the effect of different sintering treatments on La1−xSrxCoO3 samples ...
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Fabrication and characterization of superparamagnetic and thermoresponsive hydrogels based on oleic-acid-coated Fe3O4 nanoparticles, hexa(ethylene glycol) methyl ether methacrylate and 2-(acetoacetoxy)ethyl methacrylate
Papaphilippou, P.; Pourgouris, A.; Marinica, O.; Taculescu, A.; Athanasopoulos, G. I.; Vekas, L.; Krasia-Christoforou, T. (2011)Stimuli-responsive hydrogel nanocomposites comprised of swollen polymer networks, in which magnetic nanoparticles are embedded, are a relatively new class of "smart" soft materials presenting a significant impact on various ...
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Article
Growth and structural characterization of orthorhombic and tetragonal SrCuO2 thin films
Mihailescu, C. N.; Pasuk, I.; Athanasopoulos, G. I.; Luculescu, C.; Socol, M.; Saint-Martin, R.; Revcolevschi, A.; Giapintzakis, John (2013)Epitaxial SrCuO2 thin films were grown on (0 0 1) SrTiO 3 substrates by pulsed laser deposition using a stoichiometric target. X-ray diffraction indicated that the SrCuO2 films undergo a structural phase transition as a ...
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Growth and transport properties of HT-Li xCoO 2 thin films deposited by pulsed laser deposition
Svoukis, E.; Athanasopoulos, G. I.; Moradpour, A.; Schneegans, O.; Revcolevschi, A.; Giapintzakis, John (2012)The successful in situ growth of single phase, c-axis oriented, layered structured Li xCoO 2 thin films on (0 0 0 1) Al 2O 3 substrates by pulsed laser deposition is reported. Thin films were grown in an oxygen pressure ...
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Conference Object
Influence of processing conditions on the thermoelectric properties of La1-xSrxCoO3 (x=0, 0.05)
Papageorgiou, C.; Athanasopoulos, G. I.; Kyratsi, Theodora; Giapintzakis, John (Affiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, 1678 Nicosia, CyprusCorrespondence Address: Papageorgiou, C.Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, 1678 Nicosia, Cyprus, 2012)La1-xSrxCoO3 (x=0, 0.05) powders were prepared using the citrate-gel (Pechini) process. Pellets formed from these powders were sintered at various temperatures. All samples were characterized by means of X-Ray Diffraction ...
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Article
KrF pulsed laser deposition of La5Ca9Cu24O41 thin films on various substrates
Pervolaraki, M.; Athanasopoulos, G. I.; Saint-Martin, R.; Revcolevschi, A.; Giapintzakis, John (2009)Recent studies on single crystals of cuprate oxides containing spin chains and ladders have reported large anisotropic magnon-mediated thermal conductivity. A potential use of thin films of such materials could be in the ...
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Matrix assisted pulsed laser evaporation of Mn 12(Propionate) thin films
Pervolaraki, M.; Sima, F.; Socol, G.; Teodorescu, C. M.; Gheorghe, N. G.; Socol, M.; Mihailescu, I. N.; Moushi, E. E.; Tasiopoulos, Anastasopoulos J.; Athanasopoulos, G. I.; Viskadourakis, Z.; Giapintzakis, John (2012)Single molecule magnets are of great interest due to a multitude of potential applications for some of which thin films are required. Traditional physical vapor deposition techniques are not suitable for the deposition of ...
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Article
Mn12 benzoate thin films on Si substrates fabricated by matrix assisted pulsed laser evaporation
Pervolaraki, M.; Athanasopoulos, G. I.; Giapintzakis, John; Kizas, C.; Tasiopoulos, Anastasopoulos J.; Sima, F.; Socol, G.; Mihailescu, I. N. (2010)We report on the successful implementation of Matrix Assisted Pulsed Laser Evaporation, to obtain films of the single molecule magnet Mn12 benzoate on Si substrates. The films have been characterized by optical microscopy, ...
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Article
Pulsed laser deposition and thermal characterization of Ni-doped La5Ca9Cu24O41 thin films
Athanasopoulos, G. I.; Pervolaraki, M.; Svoukis, E.; Androulakis, J.; Saint-Martin, R.; Revcolevschi, A.; Giapintzakis, John (2011)Highly b-axis oriented polycrystalline Ni-doped La5Ca 9Cu24O41 thin films have been grown on (0 0 1) SrTiO3 substrates using the pulsed laser deposition technique. EDX measurements have revealed nearly stoichiometric ...
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Pulsed laser deposition of homo- and hetero-epitaxial thin films of the exotic La5Ca9Cu24O41 compound on oxide and Si substrates
Pervolaraki, M.; Singh, S.; Athanasopoulos, G. I.; Saint-Martin, R.; Revcolevschi, A.; Giapintzakis, John (2010)Pristine and transition metal-doped La5Ca9Cu 24O41 thin films were fabricated by pulsed laser deposition in oxygen atmosphere. The effect of magnetic doping, type of substrate and growth temperature on the crystallographic ...
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Article
Si nanostructures grown by picosecond high repetition rate pulsed laser deposition
Pervolaraki, M.; Komninou, Ph; Kioseoglou, J.; Athanasopoulos, G. I.; Giapintzakis, John (2013)One-step growth of n-doped Si nanostructures by picosecond ultra fast pulsed laser deposition at 1064nm is reported for the first time. The structure and morphology of the Si nanostructures were characterized by X-ray ...
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Article
Structural and thermal characterization of La5Ca 9Cu24O41 thin films grown by pulsed laser deposition on (1 1 0) SrTiO3 substrates
Svoukis, E.; Athanasopoulos, G. I.; Altantzis, T.; Lioutas, C.; Martin, R. S.; Revcolevschi, A.; Giapintzakis, John (2012)In the present study stoichiometric, b-axis oriented La5Ca 9Cu24O41 thin films were grown by pulsed laser deposition on (1 1 0) SrTiO3 substrates in the temperature range 600-750 °C. High resolution transmission electron ...
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Conference Object
Thermal conductivity measurements of anisotropic bulk samples using the 3ω method
Athanasopoulos, G. I.; Svoukis, E.; Viskadourakis, Z.; Giapintzakis, John (Affiliation: Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, Nicosia, 1678, CyprusAffiliation: Materials Science and Technology Department, University of Crete, P.O. Box 2208, Heraklion Crete 710 03, GreeceCorrespondence Address: Athanasopoulos, G. I.Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, Nicosia, 1678, Cyprus, 2010)The 3ω method has been applied to measure the anisotropic thermal conductivity of single crystals of SiO2 (quartz) and La 14-yCayCu24O41 (y = 9 and 10). A two-dimensional heat conduction model along with properly oriented ...
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Thermal conductivity of Ni, Co, and Fe-doped La5Ca 9Cu24O41 thin films measured by the 3ω method
Athanasopoulos, G. I.; Svoukis, E.; Pervolaraki, M.; Saint-Martin, R.; Revcolevschi, A.; Giapintzakis, John (2010)The effect of Ni-, Co- and Fe-substitution for Cu on the thermal conductivity of La5Ca9Cu24O41 thin films is investigated. Highly b-axis oriented polycrystalline films were grown onto MgO (100) substrates using the pulsed ...
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Article
Thermal conductivity of Ni, Co, and Fe-doped La5Ca9Cu24O41 thin films measured by the 3ω method
Athanasopoulos, G. I.; Svoukis, E.; Pervolaraki, M.; Saint-Martin, R.; Revcolevschi, A.; Giapintzakis, John (2010)
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Article
Thermoelectric properties of Bi0.5Sb1.5Te3 thin films grown by pulsed laser deposition
Symeou, E.; Pervolaraki, M.; Mihailescu, C. N.; Athanasopoulos, G. I.; Papageorgiou, C.; Kyratsi, Theodora; Giapintzakis, John (2015)We report on the pulsed laser deposition of p-type Bi0.5Sb1.5Te3 thin films onto fused silica substrates by ablation of dense targets of Bi0.5Sb1.5Te3 with an excess of 1 wt% Te. We investigated the effect of film thickness, ...
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Thermoelectric properties of strained, lightly-doped La1–xSrxCoO3 thin films
Viskadourakis, Z.; Pervolaraki, M.; Athanasopoulos, G. I.; Giapintzakis, John (2019)We report on the thermoelectric properties of strained, highly-oriented, lightly-doped La1–xSrxCoO3 thin films, grown on MgO (100) substrates by pulsed laser deposition. The large lattice mismatch (∼9%), along with the ...