3981. CVD Growth of Molybdenum Diselenide Surface Structures with Tailored MorphologyM. Naeem Sial, Usman Muhammad, Binjie Zheng, Yanan Yu, Andraž Mavrič, Fangzhu Qing, Matjaž Valant, Zhiming M. Wang, 2018, izvirni znanstveni članek Opis: Controllable atmospheric pressure CVD has been optimized to grow transition metal dichalcogenide MoSe2 with tunable morphology at 750 °C on a silicon substrate with a native oxide layer of 250 nm. Utilizing tetrapotassium perylene-3,4,9,10-tetracarboxylate (PTAS) as a seed promoter and varying the vertical distance between the substrate and the precursor MoO3, different morphologies of MoSe2 were achieved, including 2D triangles, hexagons, 3D pyramids and vertically aligned MoSe2 sheets. We find that the shape of MoSe2 is highly dependent upon the distance h between the substrate and the precursor. The change in the morphology is attributed to the confinement of vapor (MoO3 and Se) precursors and their concentrations due to the change in h. These results are helpful in improving our understanding about the factors which influence the morphology (shape evolution) and also the continuous growth of MoSe2 films.
Ključne besede: Transition metal dichalcogenides, 2D materials, Seed promotor, Chemical vapor deposition, Molybdenum diselenide
Objavljeno v RUNG: 20.08.2018; Ogledov: 3865; Prenosov: 14
 Celotno besedilo (2,68 MB) |
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3985. THE ROLE OF MIGRATIONS AND CULTURAL HYBRIDITY IN LITERARY SYSTEMS: STUDYING THE CASE OF ALOJZ GRADNIK IN ARGENTINAAna Toroš, 2018, izvirni znanstveni članek Opis: This article attempts to reconstruct the literary and familial ties between the descendants of the Friulian Godeas family, one of these descendants being Alojz Gradnik. The article‘s methodological approach stems from the interpretation of the personal correspondence between the Godeas family descendants (from Trieste, Zagreb and Rosario). Based on all this, the second part of the article offers a few prompts for research on Gradnik‘s reception in Argentina, based on systemic approach to literature. We come to the conclusion that Gradnik‘s cultural hybridity allowed him to access the Argentine literary space through two cultural groups: the Slovene and Argentine.
Ključne besede: Alojz Gradnik, Eduardo A. Dughera, Maria Samer, Friulians, literary translation, migrant literature
Objavljeno v RUNG: 16.08.2018; Ogledov: 3495; Prenosov: 0
Gradivo ima več datotek! Več... |
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3988. Bomba na ustavnem sodišču: ali je večina poslancev izvoljena v nasprotju z ustavo?Zoran Božič, 2018, drugi sestavni deli Opis: Kje iskati vzroke za tako hude zaplete pri iskanju mandatarja z zadostno podporo v parlamentu kot tudi pri sestavi bodoče vladne koalicije? Eden ključnih razlogov je neposrečeni volilni sistem. Ste vedeli, da je bilo na letošnjih predčasnih volitvah 3. junija kar 53 od 88 poslancev državnega zbora izvoljenih v nasprotju z ustavo? Zgolj stranka SDS je dosegla 100 % legitimnost izvoljenih poslancev. Stranke, ki imajo ustavno sporne prav vse izvoljene poslance, pa so NSi, SMC, DeSUS, SAB in SNS. Naš sodelavec Zoran Božič se je namreč izjemno temeljito poglobil v jedro problema našega ponesrečenega volilnega sistema, ki je glavni krivec za politične krize v Sloveniji zadnji dve desetletji, hkrati je argumentirano dokazal prednosti dvokrožnega večinskega sistema. Analiza Zorana Božiča je celo za portal+ nadpovprečno dolga, vendar se je uredništvu smiselno, predvsem pa nujno, da jo objavi v celoti oziroma v enem delu.
Ključne besede: Slovenija, zakonodaja, ustava, demokracija, ustavno sodišče, volilni sistemi, sorazmerni volilni sistem, večinski volilni sistem, državni zbor, poslanci, legalnost, legitimnost
Objavljeno v RUNG: 31.07.2018; Ogledov: 3993; Prenosov: 134
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3990. High-temperature stabilization of bulk amorphous Al2O3Andraž Mavrič, Mattia Fanetti, Gregor Mali, Matjaž Valant, 2018, izvirni znanstveni članek Opis: We present a method for high temperature stabilization of bulk amorphous aluminium oxide. The stabilization is achieved by dispersing polysilane dendritic molecules in aluminium hydroxide gel, which upon thermal treatment gives amorphous aluminium oxide stable up to 900 °C. The dispersed macromolecules covalently bind to the alumina matrix and induce homogeneously distributed strain fields that keep the alumina amorphous. The thermal conversion of the precursor system was followed by thermogravimetry with an evolved gas analysis, infrared spectroscopy and 29Si NMR. The amorphous structure of aluminium oxide was confirmed with an X-ray and electron diffraction. Additionally, the amorphous state was supported by presence of penta-coordinated aluminium detected by 27Al NMR and a low bandgap measured by a UV–visible absorption spectroscopy.
Ključne besede: Amorphous aluminium oxide, Polysilane, Nanocomposite, Stabilization
Objavljeno v RUNG: 30.07.2018; Ogledov: 4416; Prenosov: 16
Celotno besedilo (2,67 MB) |
