Browsing by Author "Pervolaraki, M."
Now showing items 1-19 of 19
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Effect of gold and silver nanoislands on the electrochemical properties of carbon nanofoam
Spanakis, E.; Pervolaraki, M.; Giapintzakis, John; Katsarakis, N.; Koudoumas, E.; Vernardou, D. (2013)•Metallic nanoislands coated on the exterior surface of carbon nanofoam.•Their properties are dependent on the type of the metallic nanoisland.•The gold-associated redox reactions enhance their electrochemical performance.
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Enhancing the nanoscratch resistance of pulsed laser deposited DLC films through molybdenum-doping
Constantinou, M.; Pervolaraki, M.; Koutsokeras, L.; Prouskas, C.; Patsalas, P.; Kelires, P.; Giapintzakis, John; Constantinides, G. (2017)Pulsed laser deposition was used to grow DLC and molybdenum-doped DLC (DLC:Mo) films, with metal contents up to 3.2 at.%, on silicon substrates. The microstructural details of the films were investigated using X-ray ...
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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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Low temperature growth of In 2O 3 and InN nanocrystals on Si(111) via chemical vapour deposition based on the sublimation of NH 4Cl in In
Zervos, Matthew; Tsokkou, D.; Pervolaraki, M.; Othonos, A. (2009)Indium oxide (In 2O 3) nanocrystals (NCs) have been obtained via atmospheric pressure, chemical vapour deposition (APCVD) on Si(111) via the direct oxidation of In with Ar:10% O 2 at 1000 °C but also at temperatures as low ...
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Article
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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Microstructure and nanomechanical properties of pulsed excimer laser deposited DLC:Ag films: Enhanced nanotribological response
Constantinou, M.; Pervolaraki, M.; Nikolaou, P.; Prouskas, C.; Patsalas, P.; Kelires, P.; Giapintzakis, John; Constantinides, G. (2017)Diamond-like carbon:silver (DLC:Ag) thin films, with metal contents as high as 16.8 at.%, have been deposited on silicon substrates using pulsed excimer laser deposition
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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
Picosecond ultrafast pulsed laser deposition of SrTiO3
Pervolaraki, M.; Mihailescu, C. N.; Luculescu, C. R.; Ionescu, P.; Dracea, M. D.; Pantelica, D.; Giapintzakis, John (2015)SrTiO3 particle-composed films were grown on Si substrates via picosecond ultrafast pulsed laser deposition. We have investigated the effect of laser pulse repetition rate (0.2-8.2 MHz) and fluence (0.079-1.57 J cm-2) on ...
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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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Article
Pulsed laser deposition of highly textured La 5Ca 9Cu 24O 41 films on SrLaAlO 4 (1 0 0) and Gd 3Ga 5O 12 (1 0 0) substrates
Pervolaraki, M.; Pasuk, I.; Stan, G. E.; Giapintzakis, John (2012)The growth of La 5Ca 9Cu 24O 41 thin films on SrLaAlO 4 (1 0 0) and Gd 3Ga 5O 12 (1 0 0) substrates by pulsed laser deposition is reported in this paper. The influence of deposition process parameters, such as oxygen ...
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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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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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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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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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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 ...
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Ultrafast carrier relaxation in inn nanowires grown by reactive vapor transport
Othonos, A.; Zervos, Matthew; Pervolaraki, M. (2009)We have studied femtosecond carrier dynamics in InN nanowires grown by reactive vapor transport. Transient differential absorption measurements have been employed to investigate the relaxation dynamics of photogenerated ...
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Article
Ultrafast pulsed laser deposition of carbon nanostructures: Structural and optical characterization
Pervolaraki, M.; Komninou, P.; Kioseoglou, J.; Othonos, A.; Giapintzakis, John (2013)Carbon nanostructured materials were obtained by high-repetition rate pulsed laser ablation of a graphite target using a train of 10-ps duration pulses at 1064 nm in different pressures of high-purity Ar gas. It is ...
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The use of pulsed laser deposited seed layers for the aqueous solution growth of highly oriented ZnO nanowires on sapphire substrates at 95 C: Study of their photocatalytic activity in terms of octadecanoic (stearic) acid degradation
Kenanakis, G.; Pervolaraki, M.; Giapintzakis, John; Katsarakis, N. (2013)The photocatalytic activity of ZnO nanowires grown via an aqueous solution approach at 95 C onto sapphire substrates, which were first pre-coated with ZnO seed layers deposited by pulsed laser deposition at various ...