B6 – LU institūti un aģentūras / Institutes and agencies of the UL: Recent submissions
Отображаемые элементы 101-120 из 742
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Study of Metal Leaching from Printed Circuit Boards by Improved Electrochemical Hydrochlorination Technique Using Alternating Current
(MDPI, 2023)This paper presents the results of the leaching of metals from computer PCBs by electrochemical hydrochlorination using alternating current (AC) with an industrial frequency (50 Hz). Leaching was carried out with a ... -
Selective Patterned Growth of ZnO Nanoneedle Arrays
(Sciendo, 2023)Nanostructured coatings are widely used to improve the sensitivity of various types of sensors by increasing the active surface area compared to smooth films. However, for certain applications (in some cases), it may be ... -
NV microscopy of thermally controlled stresses caused by thin Cr2O3 films
(Optica Publishing Group, 2023)Many modern applications, including quantum computing and quantum sensing, use substrate-film interfaces. Particularly, thin films of chromium or titanium and their oxides are commonly used to bind various structures, such ... -
Reactive pulsed direct current magnetron sputtering deposition of semiconducting yttrium oxide thin film in ultralow oxygen atmosphere: A spectroscopic and structural investigation of growth dynamics
(Elsevier, 2023)An experimental investigation was conducted to explore spectroscopic and structural characterization of semiconducting yttrium oxide thin film deposited at 623 K (±5K) utilizing reactive pulsed direct current magnetron ... -
Proton migration barriers in BaFeO3−δ – insights from DFT calculations
(Royal Society of Chemistry, 2023)Proton migration in the triple conducting perovskite BaFeO3−δ is investigated using first-principles density functional theory calculations. Oxygen-deficient BaFeO3−δ exhibits pronounced lattice distortions that entail ... -
Post deposition annealing effect on properties of CdS films and its impact on CdS/Sb2Se3 solar cells performance
(Frontiers Media, 2023)Antimony selenide (Sb2Se3) is one of the emerging photovoltaic absorber materials possessing abundance and non-toxicity as the main attributes. Following CdTe technology, CdS is a widely used partner layer for Sb2Se3 solar ... -
Nanomechanical and Electrochemical Corrosion Testing of Nanocomposite Coating Obtained on AZ31 via Plasma Electrolytic Oxidation Containing TiN and SiC Nanoparticles
(MDPI, 2023)Lightweight magnesium alloys offer excellent benefits over Al alloys due to their high specific strength and damping properties, but they are more prone to galvanic corrosion. Plasma electrolytic oxidation (PEO) coatings ... -
Non-Enzymatic Co3O4 Nanostructure-Based Electrochemical Sensor for H2O2 Detection
(Sciendo, 2023)This article describes the synthesis of nanostructured cobalt oxide on iron wires and its application for the detection of hydrogen peroxide as working electrode for non-enzymatic electrochemical sensor. Cobalt oxide was ... -
LIBS plasma in atmospheric pressure argon, nitrogen and helium: Spatio-temporal distribution of plume emission and Hα linewidth
(Elsevier, 2023)Laser Induced Breakdown Spectroscopy (LIBS) method is considered for assessing the retention of hydrogen isotopes in the ITER plasma-facing components during the maintenance breaks when the reactor is filled with near ... -
Micromechanical Properties of Gd3Ga5O12 Crystals Irradiated with Swift Heavy Ions
(Sumy State University, 2023)This study investigated the optical absorption and mechanical behavior of Gd3Ga5O12 (GGG) single crystals exposed to fast 84 Kr ions at fluences ranging from 1013 to 1014 ion/cm2. We observed that the optical absorption ... -
Intrinsic Photoconductivity Spectral Dependence as a Tool for Prediction of Open-Circuit Voltage in Organic Solar Cells
(MDPI, 2023)Organic materials are known for their variety of molecules. Methods to predict the parameters of organic photovoltaic (OPV) cells are required to avoid the time- and resource-consuming processes of manufacturing and testing ... -
Influence of Heat Treatment and High-Pressure Torsion on Phase Transformations in TiZrHfMoCr High-Entropy Alloy
(MDPI, 2023)The study focused on a 21.99 at.%Ti–22.49 at.%Zr–20.35 at.%Hf–17.45 at.%Mo–17.73 at.%Cr). Analytical techniques such as X-ray diffraction, scanning electron microscopy as well as X-ray absorption spectroscopy were employed ... -
Improvement of Heat Dissipation in Ag/Ni Substrates for Testing Cu-TiO2/TiO2-Modified Filters Using SERS Spectroscopy
(MDPI, 2023)Surface-enhanced Raman scattering (SERS) spectroscopy is used to investigate a composition of wash swabs from the Cu-TiO2/TiO2-modified filters with disinfecting ability. Macroporous Si chips coated with conformal 800 nm ... -
High-order harmonics generation in Cd and Pd laser-induced plasmas
(Optica Publishing Group, 2023)We demonstrate the generation of high-order harmonics of laser pulses in palladium and cadmium plasmas. We adjusted the wavelength of driving pulses to investigate the resonance enhancement in different ranges of extreme ... -
High Performance Triboelectric Nanogenerators from Compostable Cellulose-Biodegradable Poly(Butylene Succinate) Composites
(Wiley, 2023)Triboelectric nanogenerator (TENG) devices are exemplar systems for mechanical-to-electrical energy conversion due to their simplicity and promising performance. However, little attention has been paid to recycling or ... -
From electrochromic phenomena to energy harvesting and storage—an overview of solid state ionics research at the Institute of Solid State Physics, University of Latvia
(Springer, 2023)Solid state ionics is one of the key research topics of the Institute of Solid State Physics, University of Latvia since its establishment. The research direction included topics ranging from electrochromic phenomena in ... -
Development of Bi2S3 thin film solar cells by close-spaced sublimation and analysis of absorber bulk defects via in-depth photoluminescence analysis
(Elsevier, 2023)The emergence of new PV applications in society requires the design of new materials and devices based on green and earth-abundant elements, with a different set of properties and wider applicability. In this perspective, ... -
Flexible nanosheets for plasmonic photocatalysis: microwave-assisted organic synthesis of Ni–NiO@Ni2CO3(OH)2 core–shell@sheet hybrid nanostructures
(Royal Society of Chemistry, 2023)Visible light-active nickel-based plasmonic photocatalysts provide a cost-effective alternative to noble metals. However, their rarity, fragility, and limited understanding pose challenges. This work presents a microwave-assisted ... -
Excited State Calculations of Cu-Doped Anatase TiO2 (101) and (001) Nanofilms
(MDPI, 2024)Excited state calculations are performed to predict the electronic structure and optical absorption characteristics of Cu-doped anatase TiO2 nanofilms, focusing on their (101) and (001) surface terminations. Using model ... -
Effect of Post-Printing Cooling Conditions on the Properties of ULTEM Printed Parts
(MDPI, 2023)first_pageDownload PDFsettingsOrder Article Reprints Open AccessArticle Effect of Post-Printing Cooling Conditions on the Properties of ULTEM Printed Parts by Tatjana Glaskova-Kuzmina 1,2,*ORCID,Didzis Dejus 1,Jānis ...