Просмотр Zinātniskie raksti (CFI) / Scientific articles по автору "Laganovska, Katrina"

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    • 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 ...

    • Doped zirconia phase and luminescence dependence on the nature of charge compensation 

      Smits, Krisjanis; Olsteins, Dags; Zolotarjovs, Aleksejs; Laganovska, Katrina; Millers, Donats; Ignatans, Reinis; Grabis, Janis (Nature Publishing Group, 2017)
      Zirconia is a relatively new material with many promising practical applications in medical imaging, biolabeling, sensors, and other fields. In this study we have investigated lanthanide and niobium doped zirconia by ...

    • Examining the Effect of Cu and Mn Dopants on the Structure of Zinc Blende ZnS Nanopowders 

      Kuzmin, Alexei; Pudza, Inga; Dile, Milena; Laganovska, Katrina; Zolotarjovs, Aleksejs (MDPI, 2023)
      It is known that doping zinc sulfide (ZnS) nanoparticles with Mn or Cu ions significantly affects their luminescent properties. Herein, we investigated how dopant atoms are incorporated into the structure of ZnS using X-ray ...

    • Microwave-assisted synthesis and characterization of undoped and manganese doped zinc sulfide nanoparticles 

      Kuzmin, Alexei; Dile, Milena; Laganovska, Katrina; Zolotarjovs, Aleksejs (Elsevier, 2022)
      Undoped and Mn-doped ZnS nanocrystals were produced by the microwave-assisted solvothermal method and characterized by X-ray diffraction, photoluminescence spectroscopy and scanning electron microscopy with energy-dispersive ...

    • Niobium enhanced europium ion luminescence in hafnia nanocrystals 

      Laganovska, Katrina; Bite, Ivita; Zolotarjovs, Aleksejs; Smits, Krisjanis (Elsevier B.V., 2018)
      In this work we demonstrate a method where by adding Nb ions, Ln3+ ion luminescence intensity in HfO2 is increased for up to 15 times (in a sample containing 5 mol%Eu). The effect is described as niobium acting as a charge ...

    • Novel method of phosphorescent strontium aluminate coating preparation on aluminum 

      Bite, Ivita; Krieke, Guna; Zolotarjovs, Aleksejs; Laganovska, Katrina; Liepina, Virginija; Smits, Krisjanis; Auzins, Krisjanis; Grigorjeva, Larisa; Millers, Donats; Skuja, Linards (Elsevier Ltd, 2018)
      This study presents a novel approach to produce phosphorescent coatings on metal surfaces. Strontium aluminates are the most popular modern phosphorescent materials exhibiting long afterglow at room temperature and a broad ...

    • Portable low-cost open-source wireless spectrophotometer for fast and reliable measurements 

      Laganovska, Katrina; Zolotarjovs, Aleksejs; Vázquez, Mercedes; Mc Donnell, Kirsty; Liepins, Janis; Ben-Yoav, Hadar; Karitans, Varis; Smits, Krisjanis (Elsevier Ltd, 2020)
      We demonstrate a low-cost standalone portable spectrophotometer for fast and reliable measurement execution. The data acquired can be both displayed via a dedicated smartphone application or a computer interface, allowing ...

    • Production of Phosphorescent Coatings on 6082 Aluminum Using Sr0.95Eu0.02Dy0.03Al2O4-δ Powder and Plasma Electrolytic Oxidation 

      Auzins, Krisjanis; Zolotarjovs, Aleksejs; Bite, Ivita; Laganovska, Katrina; Vitola, Virginija; Smits, Krisjanis; Millers, Donats (MDPI AG, 2019)
      In this study, a new approach for producing phosphorescent aluminum coatings was studied. Using the plasma electrolytic oxidation (PEO) process, a porous oxide coating was produced on the Al6082 aluminum alloy substrate. ...

    • Re-Evaluation of Chromium Doped Alumina for Dosimetric Applications 

      Einbergs, E.; Zolotarjovs, Aleksejs; Bite, Ivita; Cipa, Janis; Vitola, Virginija; Laganovska, Katrina; Trinkler, Laima (De Gruyter, 2021)
      Many medical examinations involve ionizing radiation. Although the range of available dosimeters is rather wide, their linearity and chemical stability are limited. Recently, there has been a growing interest in new, ...

    • Thermostimulated luminescence of plasma electrolytic oxidation coatings on 6082 aluminium surface 

      Zolotarjovs, Aleksejs; Smits, Krisjanis; Laganovska, Katrina; Bite, Ivita; Grigorjeva, Larisa; Auzins, Krisjanis; Millers, Donats; Skuja, Linards (Elsevier Ltd, 2019)
      For decades, plasma electrolytic oxidation (PEO) coatings are actively studied and applied to protect the surface of various valve metals from chemical or mechanical damage. However, over the last couple of years intense ...