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Item type:Item, Access status: Metadata only , Spin wave localization in a magnonic crystal with a defect(AIP Publishing, 2025-11-07) Ordonez-Romero, Cesar L.; Lazcano, Zorayda; Pirruccio, Giuseppe; Urbánek, Michal; Hrncir, Tomas; Ustinov, Aleksey B.; Drozdovskii, Andrey; Qureshi, Naser; Kolokoltsev, Oleg; Monsivais, GuillermoDefects are typically regarded as detrimental in crystalline systems whose physical properties rely on symmetry. However, lattice defects are known to be an effective solution for applications requiring energy localization. Here, we report the experimental observation of spin wave localization in a one-dimensional magnonic crystal with broken translational symmetry. By operating in the diffractive regime, we directly image energy localization in both space and time using a magneto-inductive probe. This work provides the first direct space- and time-resolved experimental evidence of spin wave localization in a diffractive regime due to a single structural defect. These findings are in good agreement with theoretical simulations, validating the underlying physical mechanism.Item type:Item, Access status: Metadata only , Effect of the Incorporation of EuCl3 as a Fluorescent Probe into Ionic Liquids on Rheological and Electrical Properties for Tribological Applications(Royal Society of Chemistry, 2025-11-06) Blahut, Jan; Zmeškal, Oldřich; Michalec, Michal; Šimara, Vít; Svoboda, Petr; Smolka, Rastislav; Sokola, PatrikFluorescence optical microscopy tracking the film thickness as a function of fluorescence intensity under the influence of an external electric field could be a very promising technique. Due to the insufficient fluorescence properties of ionic liquids, the incorporation of fluorescent probes is necessary. This research work investigates the incorporation of europium(III) chloride (EuCl3) as a fluorescent probe into the ionic liquid 1-hexyl-3-methylimidazolium chloride (HMIMCl) and its impact on the rheological and electrical properties of the resulting ionic liquid complex for future tribological use. The study showed that the incorporation of EuCl3 imparts fluorescence properties to HMIMCl, characterized by two emission peaks at 590 and 612 nm, which correspond to two specific electronic transitions of the europium ion, namely, 5D0 7F1 and 5D0 7F2. Temperature-dependent current–voltage characteristics were measured, which showed increased conductivity correlated with reduced viscosity. Rheological analysis demonstrated that the addition of EuCl3 increased the dynamic viscosity of the ionic liquid while remaining within the range of common low viscosity tribological oils. This research highlights the potential of fluorescent ionic liquids in tribological applications and paves the way for the development of smart, environmentally friendly lubricants, which would be able to react to an electric field. The findings contribute valuable insights into the design and optimization of smart fluids that can adapt their properties in response to external stimuli.Item type:Item, Access status: Open Access , Automated fluorescence image stitching for high-throughput and digital microfluidic biosensors(Royal Society of Chemistry, 2025-11-06) Yan, Zhiqiang; Ren, Yulin; Jarušek, Jaromír; Brodský, Jan; Gablech, Imrich; Zhang, Haoqing; Neužil, PavelFluorescence imaging underpins digital PCR (dPCR), microarrays, and microfluidic biosensors, yet precise image integration remains a technical bottleneck when the sample area exceeds the microscope field of view. Current stitching methods often rely on fiducial markers or manual tuning, limiting automation and robustness, particularly in portable or point-of-care devices. We present a marker-free image stitching algorithm that combines partition-detection-based registration with mask-based illumination correction. The algorithm aligns frames using intrinsic structural features and compensates for brightness inconsistencies in an adaptive manner, without requiring platform-specific parameter tuning. Application to three dPCR systems, including droplet- and chip-based formats, showed an increased number of matched feature points within overlapping regions, improving the reliability of image stitching. In addition, it enhanced intensity uniformity by approximate to 29.6% compared with conventional methods. The proposed algorithm was further validated on microarrays and bead-based chips, demonstrating consistent stitching accuracy and signal integrity across different modalities. This generalized and automation-compatible solution supports high-throughput microfluidic imaging, quantitative bioanalysis, and integration with artificial intelligence-enabled diagnostic workflows.Item type:Item, Access status: Open Access , Lignite as a natural active immobilization system for surface/drainage water polluted by fertilizers(Royal Society of Chemistry, 2025-11-05) Klučáková, Martina; Závodská, Petra; Pavlikova, Marcela; Bursik, Lukas; Sobotková, VeronikaThe quality of surface and drainage water is key for the health of nature; therefore, their contamination levels should be maintained under safe limits. This study focuses on water sampled from the & Rcaron;& iacute;& ccaron;ka tSream in the Czech Republic, which is contaminated mainly by nitrates and phosphates originating from fertilizers. Additionally, the content of heavy metals was monitored. The measured concentrations of Cd and Zn were below the limit of detection, while Cu and Pb remained below safe limits except during summer, likely due to the dry season. Concentrations of nitrates and phosphates exceeded the limiting values in all cases. Batch adsorption experiments using lignite were performed with both model solutions to determine adsorption capacity, which decreased in the order Pb > Cu > nitrates > phosphates. The experiments with real water samples from the & Rcaron;& iacute;& ccaron;ka Stream showed that lignite can effectively immobilize the studied pollutants. The adsorption efficiency was higher than 70% in all cases. The majority of the adsorbed pollutants remained in the immobilized forms both in the experiments with the model solutions and real water samples. An increased leachability was observed for nitrates; however, the equilibrium concentrations of nitrates after adsorption as well as their leachable form were under safe limits. Lignite can be considered an effective and low-cost adsorbent for the removal of pollutants from real water.Item type:Item, Access status: Open Access , Development of Apartment Prices in the Cadastral Areas of Brno Between 2014-2024 with Regard to Ownership Structure(Polish Mineral Engineering Society, 2025-11-05) Juříček, Pavel; Wittmann, Maxmilian; Ježková, TerezaOver the past decade, Brno has experienced a significant increase in apartment prices, with values at least doubling in most of the observed areas. This study analyzes real transaction prices obtained from the cadastral register and provides a clear overview of price developments in different parts of Brno. The data is categorized by cadastral areas and compared, with a particular focus on differences between specific locations such as Brno-střed (city center), Veveří (a prestigious address), Zábrdovice (a less sought-after area), and Lesná (a panel housing estate). Additionally, actual sale prices are compared with listing prices from publicly available real estate platforms (Sreality). The price trends show a consistent upward trajectory, with a slight decline during the pandemic, followed by a renewed increase in property values. The article further examines three main forms of ownership: private (including units in homeowners' associations), cooperative, and municipal. Another goal is to estimate the proportion of investment apartments based on the registered permanent residence of their owners. The study also explores regional differences in apartment prices and the impact of factors such as infrastructure, public amenities, and location attractiveness. Finally, it outlines possible future trends in price development and their potential impact on housing affordability in Brno.