Scientific highlights

 

 

Publication:

• PLANETOVÁ, Viktória – BOHÁČ, Peter** – BUJDÁK, Juraj* – SIGMUNDOVÁ, Ivica – MAGDOLEN, Peter – RAJAMANI, Rajmohan – HROBÁRIK, Peter. Unlocking Light-Up Effect of Push–Pull Hemicyanine Dyes in Hybrid Silicate Dispersions: Impact of the Terminal Arylamine Functionality and Intermolecular Surface Distances. In Langmuir, 2025, vol. 41, no. 51, p. 34621–34630 (2024: 3.9 – IF, Q2 – JCR, 0.763 – SJR, Q1 – SJR). https://doi.org/10.1021/acs.langmuir.5c05919

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Publication:

• HANZEL, Ondrej** – TATARKOVÁ, Monika – NETRIOVÁ, Zuzana – ŠAJGALÍK, Pavol. Effect of phase composition on thermal and electrical conductivity of additive-free silicon carbide ceramics. In Journal of the European Ceramic Society, 2025, vol. 42, no. 4, art no. 117077 (2024: 6.2 – IF, Q1 – JCR, 1.3 – SJR, Q1 – SJR). https://doi.org/10.1016/j.jeurceramsoc.2024.117077

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Publication:

• GIANNI, Eleni – POSPÍŠIL, Miroslav – SCHOLTZOVÁ, Eva**. Halloysite as a carrier/sorbent of diclofenac: A molecular simulations study. In Surfaces and interfaces, 2025, vol 70, art no. 106710. (2024: 6.3 – IF, Q1 – JCR, 1.036 – SJR, Q1 – SJR). https://doi.org/10.1016/j.surfin.2025.106710

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NMR spin-spin couplings contain invaluable information for structure determination especially in solution when other techniques such as X-Ray are not available. Understanding factors influencing their values is crucial for the correct interpretation of experimental spectra. A surprisingly big solvent effect (50% or more of the total value) on one-bond metal-phosphorous coupling has been discovered and explained with the help of quantum-chemical calculations. It was found that one of the key parameters that define the magnitude of the solvent effect is the Cl-M-Cl angle (M = Hg, Zn). Calculations of couplings in analogous systems with other metals indicate that for metals preferring square planar structures the solvent is insignificant because these structures are fairly rigid. Tetrahedral structures are less constrained and can respond more easily to external effects such as solvation.

Publication:

MALKINA, Oľga** – BÜHL, Michael – CHALMERS, A. – KOMOROVSKÝ, Stanislav. Investigation of the effect of solvation on 1J(Metal–P) spin–spin coupling. In Physical Chemistry Chemical Physics, 2025, vol. 27, p. 3574-3582 (2024: 2.9 – IF, Q2 – JCR, 0.698 – SJR, Q2 – SJR). https://doi.org/10.1039/d4cp04594g

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Thanks to its excellent optical, thermal, and mechanical properties, YAG (yttrium aluminum garnet) is a promising candidate for active photonic integrated circuits (PICs). In this work, YAG-forming glasses were prepared by sintering glass microspheres, enabling a wide range of precisely controlled compositions. Femtosecond laser processing of these glasses consistently resulted in the selective and exclusive precipitation of polycrystalline YAG channels as the sole crystalline phase across all compositions. The demonstrated reliability in forming YAG channels represents a key step toward laser-written waveguides for integrated photonics. To explore active device potential, erbium was incorporated into an optimized composition. The successful crystallization of erbium-doped YAG opens promising prospects for on-chip waveguide lasers and amplifiers within PICs.

Publication:

• BARKER, Collin** – KNORR, Brian – MICHÁLKOVÁ, Monika – GHADAMYARI, Marzieh – PARCHOVIANSKY, Milan – DRDLÍK, Daniel – GALUSEK, Dušan – JAIN, Himanshu – DIEROLF, Volkmar. Femtosecond laser crystallization of YAG in yttrium aluminosilicate glasses. In International Journal of Applied Glass Science, 2025, vol. 2025, no. 4, art no. e16710 (2024: 2.5 – IF, Q2 – JCR, 0.476 – SJR, Q2 – SJR). https://ceramics.onlinelibrary.wiley.com/doi/10.1111/ijag.16710?af=R

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Producing eutectic Al₂O₃–Y₃Al₅O₁₂–ZrO₂ ceramics typically involves high-temperature melting, which renders the process complex and costly. In this study, a simplified method for synthesizing pseudo-ternary eutectic ceramic composites was developed. Lamellar eutectic microstructures were successfully obtained in Al₂O₃–Y₃Al₅O₁₂ composites containing 5 mol% ZrO₂ via a single-step spark plasma sintering (SPS) process using sol–gel–derived powders. Partial calcination at 1000 °C produced fine particles and preserved volatile species, facilitating localized plasma-assisted reactions during SPS. These conditions promoted the formation of transient eutectic liquid phases and the development of lamellar microstructures. This simplified method enables tailoring the microstructure by adjusting the calcination treatment.

Publication:

• VAKHSHOURI, Maryam** – TALIMIAN, Ali – NAJAFZADEHKHOEE, Aliasghar – GALLARDO-LÓPEZ, Ángela – POYATO, Rosalía – GUTIÉRREZ-MORA, Felipe – GALUSEK, Dušan. Fabrication of Al₂O₃–YAG–ZrO₂ composites by single-step spark plasma sintering. In Journal of the European Ceramic Society, 2025, vol. 45, no 10, art no. 117358. (2025: 6.2 – IF, Q1 – JCR, 1.3 – SJR, Q1 – SJR). https://doi.org/10.1016/j.jeurceramsoc.2025.117358

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Publication:

• HOSSEINI, Naser – VALENZA, Fabrizio – CHLUP, Zdeněk – GAMBARO, S. – ŠIŠKA, Filip – MALINVERNI, Carla – XU, Jie – CASALEGNO, Valentina – KOVALČÍKOVÁ, Alexandra – TATARKOVÁ, Monika – SALVO, Milena – ZHOU, Xiaobing – TATARKO, Peter**. Wettability and brazing of (MoNbTaVW)C high-entropy carbide by Ni and NiTa. In Journal of Materials Research and Technology-JMR&T, 2025, vol. 39, p. 1599-1611 (2024: 6.6 – IF, Q1 – JCR, 1.318 – SJR, Q1 – SJR). https://doi.org/10.1016/j.jmrt.2025.09.182
• HOSSEINI, Naser – VALENZA, Fabrizio – CHLUP, Zdeněk – GAMBARO, S. – MALINVERNI, Carla – CASALEGNO, Valentina – KOVALČÍKOVÁ, Alexandra – TATARKOVÁ, Monika – DLOUHÝ, Ivo – TATARKO, Peter**. Wetting and brazing of (HfTaZrNbTi)B2 and (HfTaZrNbTi)C High-Entropy Ceramics by AgCuTi filler. In Open Ceramics, 2025, vol. 22, art no. 100792. (2024: 2.8 – IF, Q1 – JCR, 0.53 – SJR, Q2 – SJR). https://doi.org/10.1016/j.oceram.2025.100792

Foreign cooperating institutions:

1. Institute of Condensed Matter Chemistry and Technologies for Energy–ICMATE, National Research Council –CNR, Italy
2. Institute of Physics of Materials, Czech Academy of Sciences, Czech Republic
3. Department of Applied Science and Technology, Politecnico di Torino, Italy
4. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, China
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Publication:

• KING, Graham** – RAKHMATULLIN, Aydar – ŠIMKO, František. The Role of Dynamic Polyhedral Rotations in the Phase Transitions of Rb₃AlF₆ and Cs₃AlF₆. In Inorganic Chemistry, 2025, volume 64, no. 28, p. 14661-14669 (2024: 4.7 – IF, Q1 – JCR, 0.958 – SJR, Q1 – SJR). https://doi.org/10.1021/acs.inorgchem.5c02352

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Translucent ceramic composites with improved damage tolerance were obtained by producing a compression layer on the surface of MgAl₂O₄/Al₂O₃ composites. Various multi-layer bodies were produced by stacking and thermo-compressing individual layers fabricated by aqueous tape casting; the laminar bodies were then densified using spark plasma sintering to obtain translucent bodies. The mechanical performance of the produced samples was studied in terms of the necessary force for crack initiation under Hertzian contact. The results showed that the composite bodies with MgAl₂O₄/Al₂O₃/MgAl₂O₄ architecture have exhibited the highest resistance to cracking. The difference in the coefficient of thermal expansion of layers accounts for the formation of a compressive layer on the surface, preventing the initiation of cracks.

Publication:

1. NAJAFZADEHKHOEE, Aliasghar** – JABR, Abdullah – TALIMIAN, Ali – PAPSÍK, Roman – DRDLÍK, Daniel – MACA, Karel – GALUSEK, Dušan – BERMEJO, Raúl. Improving contact damage resistance of spinel translucent ceramics through a multi-layer design. In Journal of the European Ceramic Society, 2025, vol. 45, no. 4, art no. 117071 (2025: 6.2 – IF, Q1 – JCR, 1.3 – SJR, Q1 – SJR). https://doi.org/10.1016/j.jeurceramsoc.2024.117071

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