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    • Band Gap Engineering and Trap Depths of Intrinsic Point Defects in RAlO3 (R = Y, La, Gd, Yb, Lu) Perovskites 

      Zhydachevskyy, Yaroslav; Hizhnyi, Yuriy; Nedilko, Sergii G.; Kudryavtseva, Irina; Pankratov, Vladimir; Stasiv, Vasyl; Vasylechko, Leonid; Sugak, Dmytro; Lushchik, Aleksandr; Berkowski, Marek; Suchocki, Andrzej; Klyui, Nickolai (American Chemical Society, 2021)
      The possibility of band gap engineering (BGE) in RAlO3(R = Y, La, Gd, Yb, Lu) perovskites in the context of trap depths of intrinsic point defects was investigated comprehensively using experimental and theoretical approaches. ...

    • Behaviour of advanced tritium breeder pebbles under simultaneous action of accelerated electrons and high temperature 

      Zariņš, Arturs; Leys, Oliver; Ķizāne, Gunta K.; Supe, Arnis; Baumane, Larisa; González, Maria Ángeles; Correcher, Virgilio; Boronat, Cecilia; Zolotarjovs, Aleksejs; Knitter, Regina (Elsevier Ltd, 2017)
      Advanced lithium orthosilicate (Li4SiO4) pebbles with additions of lithium metatitanate (Li2TiO3) as a secondary phase are suggested as a potential source for tritium breeding in future nuclear fusion reactors. The advanced ...

    • Behaviour of thermal expansion of (1-x)Pb(Ni1/3Nb2/3)O3–xPbTiO3 solid solutions 

      Bormanis, Karlis; Gorev, Mikhail G.; Flerov, Igor N.; Sternberg, Andris; Lace, Lelde; Ignatans, Reinis; Kalvane, Anna; Antonova, Maija (Estonian Academy Publishers, 2017)
      The features of the dependence of the bulk coefficient of thermal expansion of the (1-x)Pb(Ni1/3Nb2/3)O3-xPbTiO3 solid solution studied in the series of x = 0-0.8 in the temperature range from 100 to 750 K are reported. ...

    • Bi2Se3 Nanostructured Thin Films as Perspective Anodes for Aqueous Rechargeable Lithium-Ion Batteries 

      Lazarenko, Vitalijs; Rublova, Yelyzaveta; Meija, Raimonds; Andzane, Jana; Voikiva, Vanda; Kons, Artis; Sarakovskis, Anatolijs; Viksna, Arturs; Erts, Donats (MDPI, 2022)
      In recent years, aqueous rechargeable lithium-ion batteries (ARLIBs) have attracted attention as an alternative technology for electrical storage. One of the perspective battery anode materials for application in ARLIBs ...

    • Bifurcated Asymmetric Field Flow Fractionation of Nanoparticles in PDMS-Free Microfluidic Devices for Applications in Label-Free Extracellular Vesicle Separation 

      Priedols, Miks; Paidere, Gunita; Santos, Cristina Bajo; Miscenko, Antons; Bergmanis, Romualds Gerulis; Spule, Arnita; Bekere, Beate; Mozolevskis, Gatis; Abols, Arturs; Rimsa, Roberts (MDPI, 2023)
      Extracellular vesicles are small membrane-bound structures that are released by cells and play important roles in intercellular communication garnering significant attention in scientific society recently due to their ...

    • Black carbon-doped TiO2 films: Synthesis, characterization and photocatalysis 

      Varnagiris, Sarunas; Medvids, Arturs; Lelis, Martynas; Milcius, Darius; Antuzevics, Andris (Elsevier B.V., 2019)
      Black colour TiO2 films were synthesized on amorphous fused silica substrates by DC magnetron sputtering technique with carbon powders placed at the working magnetron surface. Comprehensive sample analysis by X-ray ...

    • Black carbon-doped TiO2 films: Synthesis, characterization and photocatalysis 

      Varnagiris, Sarunas; Medvids, Arturs; Lelis, Martynas; Milcius, Darius; Antuzevics, Andris (Elsevier, 2019)
      Black colour TiO2 films were synthesized on amorphous fused silica substrates by DC magnetron sputtering technique with carbon powders placed at the working magnetron surface. Comprehensive sample analysis by X-ray ...

    • The boron effect on low temperature luminescence of SrAl2O4:Eu, Dy 

      Virginija, Vitola; Bite, Ivita; Millers, Donats K.; Zolotarjovs, Aleksejs; Laganovska, Katrina; Smits, Krisjanis; Spustaka, Agnese (Elsevier Ltd, 2020)
      Temperature dependence of the afterglow of persistent luminescence material SrAl2O4:Eu,Dy is a major problem for outdoor low temperature applications. Therefore this publication deals with tailoring the material for better ...

    • Cavity Ring-Down Spectroscopy measurements of Acetone concentration 

      Revalde, G.; Alnis, J.; Blušs, K.; Grundšteins, K.; Nitšs, Edgars (Institute of Physics Publishing, 2017)
      The Cavity Ring-Down Spectroscopy system for medical applications is created and first results for detection of acetone are shown. The acetone concentration was measured in the air. In the system a pulsed 1 kHz 266 nm DPSS ...

    • Certain doping concentrations caused half-metallic graphene 

      Miao, Lu; Jia, Ran; Wang, Yu; Kong, Chui-Peng; Wang, Jian; Eglitis, Roberts I.; Zhang, Hong-Xing (Elsevier B.V., 2017)
      The singly B and N doped graphene systems are carefully studied. The highly concentrated dopants cause a spin polarization effect in the systems. The spin polarization limits are affirmed in the singly B and N doped graphene ...

    • Changes in freshwater sediment microbial populations during fermentation of crude glycerol 

      Paiders, Matiss; Nikolajeva, Vizma; Makarenkova, Galina; Orola, Liana; Dimanta, Ilze; Kleperis, Janis (Pontificia Universidad Catolica de Valparaiso, 2021)
      Background: This work studied how the exposure to an unusual substrate forced a change in microbial populations during anaerobic fermentation of crude glycerol, a by-product of biodiesel production, with freshwater sediment ...

    • Changes in structure and conduction type upon addition of Ir to ZnO thin films 

      Zubkins, Martins; Kalendarev, Robert; Gabrusenoks, Jevgenijs; Plaude, A. V.; Zitolo, Andrea; Anspoks, Andris; Pudzs, Kaspars; Vilnis, Kaspars; Azens, Andris; Purans, Juris (Elsevier B.V., 2017)
      Zn-Ir-O (Zn/Ir ≈ 1/1) thin films have been reported to be a potential p-type TCO material. It is, however, unknown whether it is possible to achieve p-type conductivity at low Ir content, and how the type and the magnitude ...

    • Chapter 8: EPR in glass ceramics 

      Antuzevics, Andris (Elsevier B.V., 2019)
      The development of novel materials requires a profound understanding of the relationship between a material's performance and its structural properties. Electron paramagnetic resonance (EPR) is a well-established technique ...

    • Characterization of CdxTeyOz/CdS/ZnO Heterostructures Synthesized by the SILAR Method 

      Suchikova, Yana; Kovachov, Sergii; Bohdanov, Ihor; Popova, Elena; Moskina, Aleksandra; Popov, Anatoli (MDPI, 2023)
      CdxTeyOz/CdS/ZnO heterostructures were obtained by the SILAR method using ionic electrolytes. A CdS film was formed as a buffer layer for better adhesion of the cadmium-tellurium oxides to the substrate surface. In turn, ...

    • Characterization of electrospun poly(lactide) composites containing multiwalled carbon nanotubes 

      Ristić, Ivan; Miletić, Aleksandra; Vukić, Nevena; Marinović-Cincović, Milena; Smits, Krisjanis; Cakić, Suzana; Pilić, Branka (SAGE Publications Inc., 2019)
      The main aim of this work was to obtain conductive polymer-based materials by incorporation of different amounts of multiwalled carbon nanotubes (MWCNTs) into poly(lactide)(PLA) using the electrospinning technique. Fiber-based ...

    • Characterization of Mechanical Oscillations in Bismuth Selenide Nanowires at Low Temperatures 

      Jasulaneca, Liga; Poplausks, Raimonds; Prikulis, Juris; Dzene, Elza; Yager, Tom; Erts, Donats (MDPIO, 2023)
      A single transistor preamplifier circuit was designed to facilitate electrical detection of mechanical oscillations in nanoelectromechanical systems (NEMSs) at low temperatures. The amplifier was integrated in the close ...

    • Characterization of Structural Stability of Magnetron Sputtered Tungsten-boron Thin Films at Elevated Temperatures 

      Avotina, Liga; Goldmane, Annija Elizabete; Vanags, Edgars; Trimdale-Deksne, Aija; Bumbure, Lada; Romanova, Marina; Sorokins, Hermanis; Muhin, Alexei; Zaslavskis, Aleksandrs; Kizane, Gunta; Dekhtyar, Yuri (Kaunas University of Technology, 2023)
      In the divertor of the tokamak type fusion reactors tungsten and tungsten-covered plasma facing materials are currently among the selected materials. However, metallic, high-Z plasma facing materials require plasma mitigation. ...

    • Chemical-state analyses of Ni, Zn, and W ions in NiWO4–ZnWO4 solid solutions by X-ray photoelectron spectroscopy 

      Bakradze, Georgijs; Kalinko, Aleksandrs; Kuzmin, Alexei (Elsevier, 2022)
      The chemical states of Ni, Zn, and W in microcrystalline NiWO4–ZnWO4 solid solutions were studied by X-ray photoelectron spectroscopy. The recorded spectra of the Ni 2p, Zn 2p, and W 4f photoelectron lines and Ni L2M23M45, ...

    • Chlorine Adsorption on TiO2(110)/Water Interface: Nonadiabatic Molecular Dynamics Simulations for Photocatalytic Water Splitting 

      Lin, Yin-Pai; Bocharov, Dmitry; Isakoviča, Inta; Pankratov, Vladimir; Popov, Aleksandr A.; Popov, Anatoli I.; Piskunov, Sergei (MDPI, 2023)
      Chloride is one of the most abundant ions in sea water, which is more available than fresh water. Due to lack of H2O adsorbate states near the valence band maximum (VBM) edge, the difficulty of water dissociation incidents ...

    • Cladding-Pumped Er/Yb-Co-Doped Fiber Amplifier for Multi-Channel Operation 

      Zakis, Kaspars; Olonkins, Sergejs; Udalcovs, Akeksejs; Lukosevics, Ingars; Prigunovs, Dmitrijs; Grube, Jurgis; Bikse, Liga; Supe, Andis; Ozolins, Oskars; Spolitis, Sandis; Bobrovs, Vjaceslavs (MDPI, 2022)
      Cladding-pumped erbium (Er3+)/ytterbium (Yb3+)-co-doped fiber amplifiers are more advantageous at high output powers. However, this amplification technique also has potential in telecom-related applications. These types ...