Search Results - "Kostopoulos, A."

In-situ SiNx/InN structures for InN field-effect transistors by Zervos, Ch, Adikimenakis, A., Beleniotis, P., Kostopoulos, A., Kayambaki, M., Tsagaraki, K., Konstantinidis, G., Georgakilas, A.

“…Critical aspects of InN channel field-effect transistors (FETs) have been investigated. SiNx dielectric layers were deposited in-situ, in the molecular beam…”
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Effect of rapid thermal annealing on polycrystalline InGaN thin films deposited on fused silica substrates by Kazazis, S.A., Papadomanolaki, E., Androulidaki, M., Tsagaraki, K., Kostopoulos, A., Aperathitis, E., Iliopoulos, E.

“…In this work, we report on the effects of Rapid Thermal Annealing (RTA) on the structural, electrical and optical properties of polycrystalline InGaN thin…”
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Electron density and currents of AlN/GaN high electron mobility transistors with thin GaN/AlN buffer layer by Bairamis, A., Zervos, Ch, Adikimenakis, A., Kostopoulos, A., Kayambaki, M., Tsagaraki, K., Konstantinidis, G., Georgakilas, A.

“…AlN/GaN high electron mobility transistor (HEMT) structures with thin GaN/AlN buffer layer have been analyzed theoretically and experimentally, and the effects…”
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InAlN/GaN HEMTs: a first insight into technological optimization by Kuzmik, J., Kostopoulos, A., Konstantinidis, G., Carlin, J.-F., Georgakilas, A., Pogany, D.

“…High-electron mobility transistors (HEMTs) were fabricated from heterostructures consisting of undoped In/sub 0.2/Al/sub 0.8/N barrier and GaN channel layers…”
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Long-term stability of transparent n/p ZnO homojunctions grown by rf-sputtering at room-temperature by V. Kampylafka, A. Kostopoulos, M. Modreanu, M. Schmidt, E. Gagaoudakis, K. Tsagaraki, V. Kontomitrou, G. Konstantinidis, G. Deligeorgis, G. Kiriakidis, E. Aperathitis

“…ZnO-based n/p homojunctions were fabricated by sputtering from a single zinc nitride target at room temperature on metal or ITO-coated glass and Si substrates…”
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Transparent p/n diode device from a single zinc nitride sputtering target by Kambilafka, V., Kostopoulos, A., Androulidaki, M., Tsagaraki, K., Modreanu, M., Aperathitis, E.

“…Zinc oxide (ZnO) thin films showing bipolar conductivity were fabricated by sputtering of zinc nitride target in plasma containing mixture of Ar–O 2 gasses…”
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Negative index short-slab pair and continuous wires metamaterials in the far infrared regime by Gundogdu, T F, Katsarakis, N, Kafesaki, M, Penciu, R S, Konstantinidis, G, Kostopoulos, A, Economou, E N, Soukoulis, C M

“…Using transmission and reflection measurements under normal incidence in one and three layers of a mum-scale metamaterial consisting of pairs of short-slabs…”
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Multimodal microscopy test standard for scanning microwave, electron, force and optical microscopy by Haenssler, Olaf C., Wieghaus, M. F., Kostopoulos, A., Doundoulakis, G., Aperathitis, E., Fatikow, S., Kiriakidis, G.

“…We report on measurement results of a test standard suitable for different microscopic modalities. These findings were obtained by a multimodal hybrid…”
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Gate-lag and drain-lag effects in (GaN)/InAlN/GaN and InAlN/AlN/GaN HEMTs by Kuzmik, J., Carlin, J.-F., Gonschorek, M., Kostopoulos, A., Konstantinidis, G., Pozzovivo, G., Golka, S., Georgakilas, A., Grandjean, N., Strasser, G., Pogany, D.

“…Gate and drain‐lag effects are studied in (GaN)/InAlN/GaN and InAlN/AlN/GaN HEMTs grown on sapphire. Electron trapping on the surface states between the gate…”
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High electron mobility transistors based on the AlN/GaN heterojunction by Adikimenakis, A., Aretouli, K.E., Iliopoulos, E., Kostopoulos, A., Tsagaraki, K., Konstantinidis, G., Georgakilas, A.

“…The development of high electron mobility transistors (HEMTs) from AlN/GaN heterostructures, grown by plasma assisted molecular beam epitaxy has been…”
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Bragg polariton luminescence from a GaN membrane embedded in all dielectric microcavity by Trichas, E., Pelekanos, N. T., Iliopoulos, E., Monroy, E., Tsagaraki, K., Kostopoulos, A., Savvidis, P. G.

“…We report on the development of a band gap-selective photochemical etching technique capable of producing 200 nm thick optical quality freestanding GaN…”
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Enhancing information lookup privacy through homomorphic encryption by Fotiou, N., Trossen, D., Marias, G.F., Kostopoulos, A., Polyzos, G.C.

“…ABSTRACTRevealing one's interests in communication has been recognized as a growing problem in the Internet. We postulate that it is desirable for future…”
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Response to anions of AlGaN∕GaN high-electron-mobility transistors by Alifragis, Y., Georgakilas, A., Konstantinidis, G., Iliopoulos, E., Kostopoulos, A., Chaniotakis, N. A.

“…The response of AlGaN∕GaN electrolyte-gate high-electron-mobility transistors to various concentrations of the potassium salts KCl, KBr, KNO3, and KSCN in an…”
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Experimental demonstration of negative magnetic permeability in the far-infrared frequency regime by Gundogdu, T. F., Tsiapa, I., Kostopoulos, A., Konstantinidis, G., Katsarakis, N., Penciu, R. S., Kafesaki, M., Economou, E. N., Koschny, Th, Soukoulis, C. M.

“…Using transmission and reflection measurements in a five layer micrometer-scale split-ring resonator (SRR) system, fabricated by a photolithography procedure,…”
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Control of the polarity of molecular-beam-epitaxy-grown GaN thin films by the surface nitridation of Al2O3 (0001) substrates by Mikroulis, S., Georgakilas, A., Kostopoulos, A., Cimalla, V., Dimakis, E., Komninou, Ph

“…The nitridation of Al2O3 (0001) substrate surfaces by radio-frequency nitrogen plasma has been investigated. A 1.5-nm-thick surface nitride layer occurred for…”
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Growth Optimization of an Electron Confining InN/GaN Quantum Well Heterostructure by Dimakis, E., Iliopoulos, E., Kayambaki, M., Tsagaraki, K., Kostopoulos, A., Konstantinidis, G., Georgakilas, A.

“…The molecular beam epitaxy of In-face InN (0001) epilayers with optimized surface morphology, structural quality, and electrical properties was investigated…”
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Adaptable pattern recognition system for discriminating Melanocytic Nevi from Malignant Melanomas using plain photography images from different image databases by Kostopoulos, Spiros A, Asvestas, Pantelis A, Kalatzis, Ioannis K, Sakellaropoulos, George C, Sakkis, Theofilos H, Cavouras, Dionisis A, Glotsos, Dimitris T

“…Graphical abstract…”
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Applications of AI in public health: Improving access to high-quality evidence syntheses by Dobbins, M, Rogers, K, Miller, A, Kostopoulos, A, Husson, H

“…Abstract Issue Using the best available evidence is crucial for effective public health practice. Health Evidence™ provides access to high-quality synthesis…”
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Metallic bonding methodology for heterogeneous integration of optoelectronic dies to CMOS circuits by Robogiannakis, P., Kyriakis-Bitzaros, E.D., Minoglou, K., Katsafouros, S., Kostopoulos, A., Konstantinidis, G., Halkias, G.

“…A metallic bonding methodology appropriate for wafer-level optoelectronic die to complementary metal oxide semiconductor (CMOS) circuit integration is…”
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Computer-based automated estimation of breast vascularity and correlation with breast cancer in DCE-MRI images by Kostopoulos, Spiros A, Vassiou, Katerina G, Lavdas, Eleftherios, Cavouras, Dionisis A, Kalatzis, Ioannis K, Asvestas, Pantelis A, Arvanitis, Dimitrios L, Fezoulidis, Ioannis V, Glotsos, Dimitris T

“…Abstract Dynamic contrast enhanced Magnetic Resonance Imaging (DCE-MRI) with gadolinium constitutes one of the most promising protocols for boosting up the…”
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