1. Transparent vanadium doped titania-silica films : structural characterization and self-cleaning propertiesAndraž Šuligoj, Nejc Povirk, Ksenija Maver, Andraž Mavrič, Urška Lavrenčič Štangar, Angelja Kjara Surca, 2024, izvirni znanstveni članek Ključne besede: photocatalysis, TiO2-SiO2, vanadium, film, Raman spectroscopy
Objavljeno v RUNG: 09.09.2024; Ogledov: 526; Prenosov: 7
 Celotno besedilo (9,47 MB)
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2. GasesAlojz Kodre, Iztok Arčon, Jana Padežnik Gomilšek, 2024, znanstveni sestavek v slovarju, enciklopediji, leksikonu Opis: X-ray absorption spectroscopy of gases is seldom used for structural analysis,
except in as much as the extended X-ray absorption fine-structure (EXAFS)
signal is used to monitor some specific molecular process. Gas spectroscopy,
however, has been the main tool in the systematic study of higher-order
photoabsorption processes, multielectron photoexcitations (MEEs), which were
introduced with an experiment at the K edge of argon. Along with noble gases,
where MEEs are studied in the pure form, free of the structural signal,
measurements have been extended to monatomic metal vapours, although at the
cost of considerable experimental difficulties. Several types of absorption cells
have been devised, among them the ceramic double cell and the heat-pipe cell
for experiments in the low-energy region. In a high-temperature oven with
considerable technical refinement, edge profiles of nonvolatile metals were
measured up to 2500 K. Edge profiles and MEEs, which are strongly dependent
on electron correlation, provide sensitive tests of the theory of atomic and
molecular structure.
Ključne besede: X-ray absorption spectroscopy, absorption cells, gas and vapour samples, multielectron photoexcitation, effects of electron
correlation
Objavljeno v RUNG: 05.09.2024; Ogledov: 564; Prenosov: 4
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3. Measuring thermal diffusivity of azoheteroarene thin layers by photothermal beam deflection and photothermal lens methodsAmeneh Mikaeeli, Dorota Korte, Humberto Cabrera, Dariusz Chomicki, Dariusz Dziczek, Oksana Kharchenko, Peng Song, Junyan Liu, Andreas D. Wieck, Michal Pawlak, 2023, izvirni znanstveni članek Ključne besede: thin films, photothermal spectroscopy, thermal transport, thermal wave, thermal conductivity, thermal diffusivity
Objavljeno v RUNG: 21.09.2023; Ogledov: 2121; Prenosov: 6
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6. Two-layer hybrid sol-gel system's thermal parameters investigated with the optical nondestructive photoacoustic method in the frequency domainŁukasz Chrobak, Mirosław Maliński, Dorota Korte, 2023, izvirni znanstveni članek Ključne besede: optical spectroscopy, nondestructive testing, photoacoustic method, thermal parameters, hybrid sol-gel layers, thin film characterization
Objavljeno v RUNG: 24.05.2023; Ogledov: 2511; Prenosov: 13
Celotno besedilo (2,37 MB)
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7. Voltage-dependent FTIR and 2D infrared spectroscopies within the electric double layer using a plasmonic and conductive electrodeNan Yang, Matthew J. Ryan, Minjung Son, Andraž Mavrič, Martin Zanni, 2023, izvirni znanstveni članek Opis: Strong electric fields exist between the electric double layer and charged surfaces. These fields impact molecular structures and chemistry at interfaces. We have developed a transparent electrode with infrared plasmonic enhancement sufficient to measure FTIR and two-dimensional infrared spectra at submonolayer coverages on the surface to which a voltage can be applied. Our device consists of an infrared transparent substrate, a 10–20 nm layer of conductive indium tin oxide (ITO), an electrically resistive layer of 3–5 nm Al2O3, and a 3 nm layer of nonconductive plasmonic gold. The materials and thicknesses are set to maximize the surface number density of the monolayer molecules, electrical conductivity, and plasmonic enhancement while minimizing background signals and avoiding Fano line shape distortions. The design was optimized by iteratively characterizing the material roughness and thickness with atomic force microscopy and electron microscopy and by monitoring the plasmon resonance enhancement with spectroscopy. The design is robust to repeated fabrication. This new electrode is tested on nitrile functional groups using a monolayer of 4-mercaptobenzonitrile as well as on CO and CC stretching modes using 4-mercaptobenzoic acid methyl ester. A voltage-dependent Stark shift is observed on both monolayers. We also observe that the transition dipole strength of the CN mode scales linearly with the applied voltage, providing a second way of measuring the surface electric field strength. We anticipate that this cell will enable many new voltage-dependent infrared experiments under applied voltages.
Ključne besede: two-dimensional infrared spectroscopy, infrared transparent substrate, voltage-dependent infrared experiments
Objavljeno v RUNG: 24.02.2023; Ogledov: 1964; Prenosov: 6
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9. Electronic and chemical surface properties of Bi2Se3 derived compoundsZipporah Rini Benher, doktorska disertacija Ključne besede: Bismuth selenide derived compounds, surface chemical and electronic properties, topological insulators, single crystals, phase separation, inorganic bulk heterostructures, ix
Bridgman method, X-ray powder diffraction, scanning electron microscopy, photoelectron spectroscopy
Objavljeno v RUNG: 16.12.2022; Ogledov: 2756; Prenosov: 30
Celotno besedilo (9,56 MB) |
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