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The CITIUS light source
Sandra Gardonio, Giovanni De Ninno, Barbara Ressel, 2013, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Ključne besede: femtosecond laser source, time resolved photoemission spectroscopy, correlated electron materials
Objavljeno: 06.05.2014; Ogledov: 3500; Prenosov: 16
URL Polno besedilo (0,00 KB)

Contactless monitoring of doping with spatial resolution along single GaAs nanowires
Mattia Fanetti, 2012, objavljeni povzetek znanstvenega prispevka na konferenci

Najdeno v: ključnih besedah
Ključne besede: nanowires, nanowire doping, GaAs, scanning photoemission electron spectroscopy
Objavljeno: 06.05.2014; Ogledov: 3127; Prenosov: 78
URL Polno besedilo (0,00 KB)

Chemical and structural investigation of the cobalt phthalocyanine
Matija Stupar, 2015, magistrsko delo

Opis: In the last two decades, studies on organic molecules mimicking substances of fundamental importance in nature, like chlorophyll or hemoglobin, have attracted researchers’ attention. These molecules are building blocks for a family of materials also referred to as “organic semiconductors”. Such compounds can be implemented in numerous applications, ranging from data-storage to light harvesting. Some of their fundamental advantages include low cost, light weight, relatively easy engineering and mechanical flexibility, compatible with bending plastic substrates. In this thesis work we investigated the chemical, structural and electronic properties of cobalt phthalocyanines (CoPc). These molecules have promising applications in the field of magnetic data storage and spintronics in general, due to the ferromagnetic properties of the cobalt atom. Several techniques like photoemission core-level spectroscopy and valence band spectroscopy, together with X-ray absorption, have been used in order to determine the CoPc properties in gaseous phase, i.e. in the absence of interaction with the surrounding environment. Another set of experiments was devoted to the commissioning of the CITIUS time-resolved photoemission setup, that will be used in future studies of CoPc molecules on surfaces.
Najdeno v: ključnih besedah
Ključne besede: Cobalt phthalocyanine (CoPc), photoemission spectroscopy (PES), X-ray absorption spectroscopy (XAS), synchrotron radiation, laser, high order harmonic generation (HHG), time resolved spectroscopy
Objavljeno: 29.09.2015; Ogledov: 3972; Prenosov: 188
.pdf Polno besedilo (2,96 MB)

X-ray absorption spectroscopy analysis: in situ, operando, in vivo
Iztok Arčon, 2020, objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje)

Opis: X-ray absorption spectroscopy (XAS) is a powerful tool for characterisation of local structure and chemical state of selected elements in different new functional materials and biological or environmental samples. The XAS spectroscopy is based on extremely bright synchrotron radiation X-rays sources, which allow precise characterisation of bulk, nanostructured or highly diluted samples. With its two methods (XANES and EXAFS) it enables monitoring changes in valence states and local structures of constituent elements during chemical reactions under controlled reaction conditions, and it offers a possibility of a combination of X-ray spectroscopy and microscopy with sub-micron lateral resolution, crucial for analysis of biological samples on sub-cellular level. In this talk some typical examples of advanced XAS analysis will be presented.
Najdeno v: ključnih besedah
Ključne besede: X-ray absorption spectroscopy, EXAFS, XANES, in-situ, operando
Objavljeno: 17.10.2020; Ogledov: 118; Prenosov: 0
.pdf Polno besedilo (68,21 KB)

Operando (micro) XAFS analysis
Katarina Vogel-Mikuš, Robert Dominko, Iztok Arčon, 2016, objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje)

Opis: In the talk the principles of XAS methods were presented with practical examples which illustrate the possibilities and advanced approaches for their use in structural analysis of different types of materials. The emphasis will be on to the use of XAS spectroscopy in operando mode and in combination with X-ray microscopy.
Najdeno v: ključnih besedah
Ključne besede: X-ray absorption spectroscopy, X-ray microscopy, EXAFS, XANES, opearndo mode
Objavljeno: 25.03.2016; Ogledov: 2711; Prenosov: 53
.pdf Polno besedilo (18,40 MB)

Whiskerisation of polycrystalline SiC fibres during synthesis
Gleb N. Yushin, Z. G. Cambaz, Yury G. Gogotsi, Kateryna L. Vyshnyakova, Lyudmila N. Pereselentseva, 2004, izvirni znanstveni članek

Najdeno v: ključnih besedah
Ključne besede: carbothermal synthesis, whiskers, composites, spectroscopy
Objavljeno: 09.05.2017; Ogledov: 1536; Prenosov: 67
URL Polno besedilo (0,00 KB)

Vacancy formation on C60/Pt (111)
Sandra Gardonio, Anna L Pinardi, 2014, izvirni znanstveni članek

Najdeno v: ključnih besedah
Ključne besede: fullerenes, spectroscopy, metal organic interfaces
Objavljeno: 09.05.2017; Ogledov: 1506; Prenosov: 11
URL Polno besedilo (0,00 KB)

Photocatalytic Activity of Zirconium- and Manganese- Codoped Titania in Aqueous Media: The Role of the Metal Dopant and its Incorporation Site
Nataša Novak Tušar, Iztok Arčon, O. L. Pliekhov, Urška Lavrenčič Štangar, 2016, izvirni znanstveni članek

Opis: The development of efficient TiO2-based photocatalysts for water treatment is mainly performed by doping with transition metals or by establishing junctions between different phases, metal–semiconductor or semiconductor–semiconductor. We present, for the first time, the synthesis of Zr- and Mn-modified TiO2 by a redesigned sol–gel technique that allows the formation of heterometallic bridges on the TiO2 surface. Cations of the doping metals are located in the pores of mesoporous anatase and attached to the crystalline TiO2 walls. The presence of the Zr enhances the photoactivity of the TiO2 catalyst. However, the introduction of Mn decreases the photocatalytic efficiency in a nonadditive manner. The inhibition effect was assigned to the side reaction between hydroxyl radicals and Mn ions. The fact that Mn effectively scavenges the hydroxyl radicals and, consequently, inhibits the whole oxidation process is direct proof that hydroxyl radicals are the main reactive species in the photocatalytic oxidative processes on TiO2 surfaces in aqueous media and the process of COH generation is the rate-determining step, which was confirmed using a method based on the decolorization of a commercial dye Bezaktiv Blau in a reaction with Fenton’s reagent as a source of hydroxyl radicals.
Najdeno v: ključnih besedah
Ključne besede: doping, manganese, oxidation, X-ray absorption spectroscopy, zirconium
Objavljeno: 21.07.2016; Ogledov: 1631; Prenosov: 0
.pdf Polno besedilo (577,49 KB)

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