@article{MTMT:34835532, title = {A Study of the Effect of Magnetic Scattering on the Analysis of the Nanostructure of Oxide Dispersion-Strengthened Steels by Small-Angle Neutron Scattering}, url = {https://m2.mtmt.hu/api/publication/34835532}, author = {Rogozhkin, S.V. and Klauz, A.V. and Gorshkova, Y.E. and Bokuchava, G.D. and Khomich, A.A. and Bogachev, A.A. and Nikitin, A.A. and Almásy, László and Kopitsa, G.P.}, doi = {10.1134/S0031918X23602718}, journal-iso = {PHYS MET METALLOGR+}, journal = {PHYSICS OF METALS AND METALLOGRAPHY}, volume = {125}, unique-id = {34835532}, issn = {0031-918X}, abstract = {Abstract: A distinctive feature of oxide dispersion-strengthened alloys and steels, which provides a significant increase in heat resistance in comparison with traditional materials, is a significant number of homogeneously distributed nanoscale inclusions (oxides and clusters). For detailed characterization of such materials, a set of techniques is used, such as transmission electron microscopy, atom probe tomography, as well as small-angle scattering of X-rays and neutrons. The latter techniques make it possible to analyze the largest volume of material, while maintaining the ability to detect various nanoscale features. Since ferritic-martensitic oxide dispersion-strengthened steels are ferromagnetic materials, magnetic scattering has to be taken into account in the processing of small-angle neutron scattering data. The nanostructure of ferritic-martensitic oxide dispersion-strengthened steels with different alloying systems (different content of Cr, V, W, Al, and Zr) is investigated by small-angle neutron scattering. A comparison of the results of the study of the nanostructure of steels (oxide particles and clusters) in the ferromagnetic state with and without magnetic scattering is carried out. It is shown that oxide particles have a significantly higher magnetic contrast in comparison with nanoscale clusters. At the same time, the most accurate hardness values can be obtained by taking into consideration of both oxide inclusions and clusters. © Pleiades Publishing, Ltd. 2024. ISSN 0031-918X, Physics of Metals and Metallography, 2024, Vol. 125, No. 1, pp. 93–99. Pleiades Publishing, Ltd., 2024.}, year = {2024}, eissn = {1555-6190}, pages = {93-99} } @article{MTMT:34835398, title = {Enhanced performance of solid polymer electrolytes combining poly(vinylidene fluoride-co-hexafluoropropylene), metal-organic framework and ionic liquid for advanced solid state lithium-ion batteries}, url = {https://m2.mtmt.hu/api/publication/34835398}, author = {Macedo, V.M. and Barbosa, J.C. and Salazar, H. and Fidalgo-Marijuan, A. and Gajjala, R.K.R. and Almásy, László and Gonçalves, B.F. and Petrenko, V.I. and Silva, M.M. and Gonçalves, R. and Costa, C.M. and Lanceros-Mendez, S.}, doi = {10.1016/j.est.2024.111919}, journal-iso = {J ENERGY STORAGE}, journal = {JOURNAL OF ENERGY STORAGE}, volume = {90 A}, unique-id = {34835398}, issn = {2352-152X}, abstract = {The search for sustainable and high-performance materials for lithium-ion batteries is leading to significant advances in solid polymer electrolyte (SPE) technology. However, the current drawbacks of this approach prove the need for further research and development in the field. Herein, novel ternary solid polymer electrolytes have been developed using varying loads of MOF-808 metal-organic framework and [BMIM][SCN] ionic liquid (IL) incorporated in a poly(vinylidene fluoride-co-hexafluoropropylene) matrix. The solid polymer electrolytes were evaluated at morphological, structural, thermal, mechanical and electrochemical levels, and their performance in cycling battery testing was assessed. The results showed a homogeneous structure throughout all the samples and a good dispersion of the distinct components. The polymer polar phase and degree of crystallinity of the samples are increased with increasing IL content, and the thermal and mechanical properties are appropriate for battery application. The ionic conductivity of the samples reaches maximum values of 4.68 × 10−5 S‧cm−1 at room temperature, lithium transference numbers up to 0.65, and high electrochemical stability, making them well-suited for battery applications. The assembled stability after 50 cycles at C/10 with a discharge capacity value of 150 mAh‧g−1 at room temperature was tested/derived. The obtained results show the potential of this system for high performance room temperature solid polymer electrolytes.}, keywords = {Solid polymer electrolytes; IL; solid-state batteries; MOF-808; PVDF-HFP}, year = {2024}, eissn = {2352-1538} } @article{MTMT:34763681, title = {Polyelectrolyte-protein synergism: pH-responsive polyelectrolyte/insulin complexes as versatile carriers for targeted protein and drug delivery}, url = {https://m2.mtmt.hu/api/publication/34763681}, author = {Murmiliuk, Anastasiia and Iwase, Hiroki and Kang, Jia-Jhen and Mohanakumar, Shilpa and Appavou, Marie-Sousai and Wood, Kathleen and Almásy, László and Len, Adél and Schwärzer, Kuno and Allgaier, Jürgen and Dulle, Martin and Gensch, Thomas and Förster, Beate and Ito, Kanae and Nakagawa, Hiroshi and Wiegand, Simone and Förster, Stephan and Radulescu, Aurel}, doi = {10.1016/j.jcis.2024.03.156}, journal-iso = {J COLLOID INTERF SCI}, journal = {JOURNAL OF COLLOID AND INTERFACE SCIENCE}, volume = {665}, unique-id = {34763681}, issn = {0021-9797}, year = {2024}, eissn = {1095-7103}, pages = {801-813}, orcid-numbers = {Murmiliuk, Anastasiia/0000-0001-6775-2563; Iwase, Hiroki/0000-0003-4038-7839; Kang, Jia-Jhen/0009-0006-5161-9729; Wood, Kathleen/0000-0002-8774-8112; Almásy, László/0000-0001-5750-5788; Len, Adél/0000-0003-3108-4203; Allgaier, Jürgen/0000-0002-9276-597X; Dulle, Martin/0000-0001-5699-7530; Förster, Beate/0000-0002-8464-4473; Ito, Kanae/0000-0001-7192-8795} } @article{MTMT:34763386, title = {Hydration and wetting mechanism of borosilicate – Polyvinyl alcohol (PVA) hybrid aerogels of potential bioactivity}, url = {https://m2.mtmt.hu/api/publication/34763386}, author = {Ecsédi, Bertold and Forgács, Attila and Balogh, Zoltán and Fábián, István and Kalmár, József}, doi = {10.1016/j.molliq.2024.124605}, journal-iso = {J MOL LIQ}, journal = {JOURNAL OF MOLECULAR LIQUIDS}, volume = {401}, unique-id = {34763386}, issn = {0167-7322}, year = {2024}, eissn = {1873-3166}, orcid-numbers = {Kalmár, József/0000-0002-2422-6106} } @article{MTMT:34751383, title = {Design of Nickel-Containing Nanocomposites Based on Ordered Mesoporous Silica: Synthesis, Structure, and Methylene Blue Adsorption}, url = {https://m2.mtmt.hu/api/publication/34751383}, author = {Kouznetsova, T. and Ivanets, A. and Prozorovich, V. and Shornikova, P. and Kapysh, L. and Tian, Q. and Péter, László and Trif, László and Almásy, László}, doi = {10.3390/gels10020133}, journal-iso = {GELS-BASEL}, journal = {GELS (BASEL)}, volume = {10}, unique-id = {34751383}, year = {2024}, eissn = {2310-2861}, orcid-numbers = {Péter, László/0000-0001-5604-0982; Trif, László/0000-0002-3960-1829} } @article{MTMT:34750995, title = {Better late (Roman) than never! A possible amphora fragment from 6th century Balatonlelle, Western Hungary}, url = {https://m2.mtmt.hu/api/publication/34750995}, author = {Bajnok, Katalin and Kovács, Zoltán and Nagy, Anna Andrea}, doi = {10.55023/issn.1786-271X.2024-016}, journal-iso = {ARCHEOMETRIAI MŰHELY}, journal = {ARCHEOMETRIAI MŰHELY}, volume = {21}, unique-id = {34750995}, issn = {1786-271X}, abstract = {This study reports on a unique finding connected to the re-examination of the ceramic assemblage recovered from the Langobard age (6th century AD) settlement of Balatonlelle, situated in the territory of the former Roman province of Pannonia (now in western Hungary). An undecorated body sherd, not picked up by either the initial typological evaluation of the ceramics or by the preliminary petrographic analysis, was now reassessed by thin section ceramic petrography and scanning electron microscopy. The new analyses revealed that this sherd contains rock and mineral inclusions originated from ophiolites, including slightly serpentinised peridotite fragments. Such rocks do not occur on the surface in Hungary, whereas they are commonly found in the Eastern Mediterranean. The presence of ophiolites in the potsherd indicates that this vessel was produced in a distant territory. The macroscopic characteristics of the sherd combined with its petrographic fingerprint suggest that this pot might have been a transport amphora produced in the Eastern Mediterranean. Although rarely found in Pannonia in the Migration Period, several amphora types, including the most frequently found LRA 1 type, were produced in numerous production centres in the Eastern Mediterranean, in territories geologically congruous with the aplastic inclusions found in the fabric of the Balatonlelle sherd. The significance of this finding is that from Langobard age Pannonia, amphorae occur only sporadically, connected mainly to former Roman settlements. While any conclusions drawn from a single sherd must necessarily remain tentative, this sherd nonetheless provides some material evidence for the existence of some sort of contact between Balatonlelle and the Eastern Mediterranean during the 6th century, be it economic, political or cultural. This study also aims to celebrate the career of György Szakmány, who was one of the key figures to establish ceramic petrographic research and education in Hungary, and trained many generations of petrographers – including the present authors. As such, it also serves as an example how ceramic petrography can bring a new dimension of information to archaeological research.}, year = {2024}, pages = {201-216}, orcid-numbers = {Bajnok, Katalin/0000-0001-8040-3202; Kovács, Zoltán/0009-0005-8564-4132; Nagy, Anna Andrea/0000-0001-7154-4548} } @article{MTMT:34655160, title = {Wetting of alginate aerogels, from mesoporous solids to hydrogels: a small-angle scattering analysis}, url = {https://m2.mtmt.hu/api/publication/34655160}, author = {Balogh, Zoltán and Kalmár, József and Gommes, Cedric J.}, doi = {10.1107/S1600576724001705}, journal-iso = {J APPL CRYSTALLOGR}, journal = {JOURNAL OF APPLIED CRYSTALLOGRAPHY}, volume = {57}, unique-id = {34655160}, issn = {0021-8898}, keywords = {Small-angle scattering; Aerogels; SCATTERING DATA-ANALYSIS; Boolean models}, year = {2024}, eissn = {1600-5767}, pages = {369-379}, orcid-numbers = {Kalmár, József/0000-0002-2422-6106} } @article{MTMT:34569274, title = {The effect of moisture content on the mechanical properties of wood structure}, url = {https://m2.mtmt.hu/api/publication/34569274}, author = {Kherais, Mohammad and Csébfalvi, Anikó Borbála and Len, Adél and Fülöp, Attila and Pál-Schreiner, Judit}, doi = {10.1556/606.2023.00917}, journal-iso = {POLLACK PERIODICA}, journal = {POLLACK PERIODICA: AN INTERNATIONAL JOURNAL FOR ENGINEERING AND INFORMATION SCIENCES}, volume = {19}, unique-id = {34569274}, issn = {1788-1994}, abstract = {In the last two decades, the utilization of timber in construction has gained increasing attention among researchers and sustainable building designers. Therefore, studies of climate impact on timber structures have been conducted, many of them focusing on the moisture content caused changes in timber. In the present study, four-point bending tests have been performed on three testing groups, containing 30 samples each. The first group has been tested under its natural conditions, while the second and the third groups were fully saturated with water. The third group was glazed with a protection material. The results show the changes in the modulus of elasticity and the modulus of rupture caused by the moisture content increase. In the same time the material behavior changed from brittle to semi-ductile or ductile for some samples.}, year = {2024}, eissn = {1788-3911}, pages = {41-46}, orcid-numbers = {Kherais, Mohammad/0009-0007-4734-167X; Csébfalvi, Anikó Borbála/0000-0002-0779-6887} } @article{MTMT:34569273, title = {The development of poly(9,9-dioctylfluorene) from solutions to solution processed films in terms of β-conformation: Perspective of molecular weight and solvent quality}, url = {https://m2.mtmt.hu/api/publication/34569273}, author = {Li, Tao and Zhang, Yuhua and Guan, Yijia and He, Qilong and Cheng, Dongyang and Almásy, László and Lu, Dan and Kjelstrup-Hansen, Jakob and Knaapila, Matti}, doi = {10.1016/j.polymer.2024.126748}, journal-iso = {POLYMER}, journal = {POLYMER}, volume = {295}, unique-id = {34569273}, issn = {0032-3861}, abstract = {We report how the solution structure, β-conformation and film morphology develop in poly(9,9-dioctylfluorene) (PFO) solutions and suspensions, as well as in subsequently prepared films when the molecular weight and solvent quality are systematically varied in toluene-acetone mixtures. The polymer series with molecular weights ranging from 10 kDa to 100 kDa is prepared using the precipitation fraction. The β conformation is favored by increasing molecular weight (≥30 kDa) and decreasing solvent quality (≥45 % acetone content). The content of the β conformation in the films is significantly increased when the β conformation already exists in precursor suspensions. In contrast, when there is no β conformation in the precursor solution, no β conformation will appear in the films. The mechanisms of phenomenological transformation are discussed. This work is a step toward developing quantitative guidelines for controlling PFO solutions and their film properties.}, keywords = {Molecular weight; Poly(9,9-dioctylfluorene); β conformation}, year = {2024}, eissn = {1873-2291} } @article{MTMT:34555223, title = {Study of Precipitates in Oxide Dispersion-Strengthened Steels by SANS, TEM, and APT}, url = {https://m2.mtmt.hu/api/publication/34555223}, author = {Rogozhkin, S.V. and Klauz, A.V. and Ke, Y. and Almásy, László and Nikitin, A.A. and Khomich, A.A. and Bogachev, A.A. and Gorshkova, Y.E. and Bokuchava, G.D. and Kopitsa, G.P. and Sun, L.}, doi = {10.3390/nano14020194}, journal-iso = {NANOMATERIALS-BASEL}, journal = {NANOMATERIALS}, volume = {14}, unique-id = {34555223}, abstract = {In this work, the nanostructure of oxide dispersion-strengthened steels was studied by small-angle neutron scattering (SANS), transmission electron microscopy (TEM), and atom probe tomography (APT). The steels under study have different alloying systems differing in their contents of Cr, V, Ti, Al, and Zr. The methods of local analysis of TEM and APT revealed a significant number of nanosized oxide particles and clusters. Their sizes, number densities, and compositions were determined. A calculation of hardness from SANS data collected without an external magnetic field, or under a 1.1 T field, showed good agreement with the microhardness of the materials. The importance of taking into account two types of inclusions (oxides and clusters) and both nuclear and magnetic scattering was shown by the analysis of the scattering data. © 2024 by the authors.}, year = {2024}, eissn = {2079-4991} }