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Item type:Item, Access status: Metadata only , Systematic Study of Gold Nanoparticle Effects on the Performance and Stability of Perovskite Solar Cells(MDPI, 2025-10-01) Rubtsov, Sofia; Puravankara, Akshay; Laufer, Edi L.; Sobolev, Alexander; Kosenko, Alexey; Shishkov, Vasily; Shatalov, Mykola; Danchuk, Viktor; Zinigrad, Michael; Musin, Albina; Yadgarov, LenaWe explore a plasmonic interface for perovskite solar cells (PSCs) by integrating inkjet-printed TiO2-AuNP microdot arrays (MDA) into the electron transport layer. This systematic study examines how the TiO2 blocking layer (BL) surface conditioning, AuNP layer positioning, and nanoparticle loading collectively influence device performance. Pre-annealing the BL increases its hydrophobicity, yielding smaller and denser AuNP microdots with an enhanced localized surface plasmon resonance (LSPR). Positioning the AuNP MDA at the BL/perovskite interface (above the BL) maximizes near-field plasmonic coupling to the absorber, resulting in higher photocurrent and power conversion devices; these trends are corroborated by finite-difference time-domain (FDTD) simulations. Moreover, these devices demonstrate better stability over time compared to those with AuNPs at the transparent electrode (under BL). Although higher AuNP concentrations improve dispersion stability, preserve MAPI crystallinity, and yield more uniform nanoparticle sizes, device measurements showed no performance gains. After annealing, the samples with the Au content of 23 wt% relative to TiO2 achieved optimal PSC efficiency by balancing plasmonic enhancement and charge transport without the increased resistance and recombination losses seen at higher loadings. Importantly, X-ray diffraction (XRD) confirms that introducing the TiO2-AuNP MDA at the interface does not disrupt the perovskite's crystal structure, underscoring the structural compatibility of this plasmonic enhancement. Overall, our findings highlight a scalable strategy to boost PSC efficiency via engineered light-matter interactions at the nanoscale without compromising the perovskite's structural integrity.Item type:Item, Access status: Metadata only , High-Performance Thiadiazole Derivatives as a Nontoxic Components of Initiating Systems for the Obtaining of New Generation Composites(American Chemical Society, 2025-10-01) Sroda, Patrycja; Petko, Filip; Swiezy, Andrzej; Lepcio, Petr; Galek, Mariusz; Fiedor, Pawel; Szymaszek, Patryk; Tyszka-Czochara, Malgorzata; Ortyl, JoannaThis paper presents the usefulness of new derivatives of 2,1,3-benzothiadiazole (2,1,3-BTD) as photosensitizers for diaryliodonium salts to initiate various types of photopolymerization processes using UV and Vis-LED light sources. The usefulness of the compounds was proved for initiating cationic photopolymerization of epoxy monomers, free-radical photopolymerization of acrylate monomers, and hybrid photopolymerization. The next stage of this study was to obtain 3D prints using the selected compositions. The possibility of initiating the photopolymerization process of resins with CeO2 nanoadditive was also examined, and the usefulness of obtaining photocurable composites was assessed. The cytotoxicity of the new derivatives of 2,1,3-benzothiadiazole was tested using the MTT assay, and the results showed the low toxicity of the new 2,1,3-BTD. The use of 2,1,3-benzothiadiazole derivatives in combination with iodonium salts increases the efficiency of process photopolymerization initiation, while opening the possibility of obtaining three-dimensional structures in 3D printing using digital light processing technology (DLP).Item type:Item, Access status: Metadata only , CRISPR/Cas9-Assisted Microrobots for Fast and Ultrasensitive "On-The-Fly" Next-Generation DNA Detection(Wiley, 2025-10-01) Jyoti, Jyoti; Michalek, Petr; Heger, Zbyněk; Pumera, MartinFast, sensitive, and selective nucleic acids detection is essential for applications in clinical diagnostics, food safety, and environmental monitoring. Hence, in this study, we introduce a novel motion-assisted CRISPR/Cas9 microrobots-based biosensor, consisting of CRISPR/Cas9 functionalized on gold microrobots (Au-MRs) forming CRISPR/Cas9@Au-MRs, which exhibit self-propulsion leading to rapid and ultrasensitive detection of target DNA. The proposed system achieved the limit of detection in low fM DNA concentration, enabling detection across a wide dynamic range within only 5 min, which is significantly faster than any previously reported systems. Further, this self-propelled system removes the need for complicated sample preparation, enabling real-time detection by using a minimal amount of sample. Unlike conventional CRISPR biosensors, this platform utilizes "on-the-fly" motion-enhanced signal recovery, ensuring superior specificity and sensitivity in diverse biological environments. Importantly, the presented system shows exceptional analytical performance in biological samples, highlighting its potential for real-world sensing applications. Overall, the motion-assisted CRISPR/Cas9@Au-MRs biosensor represents evolutionary progress in nucleic acids detection, providing a fast, reliable platform that can be easily scalable for applications in disease detection, biosafety and environmental detection.Item type:Item, Access status: Metadata only , Topological Insulator Bi2Te3 Anode for Aqueous Aluminum-Ion Batteries: Unveiling the Role of Hydronium Ions(Wiley, 2025-10-01) De, Puja; Lazar, Petr; Otyepka, Michal; Pumera, MartinThe primary scientific challenge in advancing aqueous aluminum-ion batteries (AAIBs) is achieving reversible plating/stripping of the Al metal anode, limited by its low deposition potential (-1.667 V vs SHE) and surface passivation in the aqueous electrolyte. To address this issue, polypyrrole (PPy) decorated topological quantum insulator (Bi2Te3@PPy) is introduced as a novel anode in AAIBs. Benefiting from the interconnected PPy network and the gap-free metallic surface state of Bi2Te3, the Bi2Te3@PPy anode enables a remarkable discharge capacity of 438 mAh g-1 at a current rate of 0.5 A g-1. It also maintains a strong discharging plateau even at a higher current rate of 10 A g-1, outperforming most electrode materials reported so far for AAIBs. The role of the topological surface states of Bi2Te3 in enhancing the ion migration rate is validated by comparing its performance across various morphologies. Ex situ studies and computational analysis reveal that in aqueous systems, Al3+ is not the sole species responsible for charge storage. Instead, hydronium ions (H3O+) significantly contribute to storing the charges through intercalation into the crystal lattice. Overall, this study pioneers a new approach for developing advanced Al metal-free AAIBs and provides deeper insights into the charge storage mechanisms in aqueous electrolytes.Item type:Item, Access status: Metadata only , Experimental investigation of silicone impression materials(Elsevier B.V., 2025-01-01) Hrubanová, Anna; Thomková, Barbora; Borák, Libor; Košková, Olga; Richtrova, Michaela; Marcián, PetrSilicone impression materials are widely used in orthodontic practice for dental impressions, but they can be used in different applications. One potential application is the use of protective obturators during anaesthesia prior to cleft palate surgery. These silicone materials come from various brands with different material properties, which can influence the final product. Thus, these different mechanical properties were examined experimentally. Tensile tests were performed on specimens prepared with the use of 3D printed moulds and their structure was investigated by micro-CT.