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4,137 results match your criteria: "Institute for Materials Research[Affiliation]"
Chemistry
December 2024
Tohoku University - Katahira Campus: Tohoku Daigaku, Advanced Institute for Materials Research, Advanced Institute for Materials Research, 980-8577, Sendai, JAPAN.
A series of CoFe2O4 materials derived from metal-organic framework were successfully constructed by the solvent-thermal method. The morphology of a typical sample CoFe2O4-1 was mostly in the form of a cubic rod-like structure with a size distribution of 3.2 ± 0.
View Article and Find Full Text PDFAdv Mater
December 2024
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai, 980-8577, Japan.
Traditional selectivity of gas sensors determined by the magnitude of the response value has significant limitations. The distinctive inversion sensing behavior not only defies the traditional sensing theory but also provides insight into defining selectivity. Herein, the novel definition of selectivity is established in a study with VO(M1).
View Article and Find Full Text PDFACS Sustain Chem Eng
May 2024
New Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan.
CeO nanoparticles exhibit potential as solid adsorbents for carbon dioxide (CO) capture and storage (CCS), offering precise control over various facets and enhancing their efficiency. This study investigated the adsorption and desorption behaviors of two types of CeO nanoparticles: cubic CeO with primarily {001} facets and polyhedral CeO with mainly {111} facets. The results showed that despite polyhedral CeO's lower quantity, it demonstrated successful adsorption-desorption cycles in both oxidized and reduced states.
View Article and Find Full Text PDFJ Mater Chem B
December 2024
School of Biological Sciences, National Institute of Science Education and Research, HBNI, Jatni, Odisha 752050, India.
Tunable redox-sensitive polymeric-lipid hybrid nanocarriers (RS-PLHNCs) were fabricated using homogenization and nanoprecipitation methods. These nanocarriers were composed of novel redox-cholesterol with disulfide linkages and synthesized by conjugating cholesterol with dithiodipropionic acid esterification. Berberine (BBR) was loaded into the fabricated nanocarriers to investigate the selective uptake of BBR by cancer cells as well as its release and enhanced cytotoxicity.
View Article and Find Full Text PDFAdv Sci (Weinh)
December 2024
Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK.
After the publication of "Direct formation of hard-magnetic tetrataenite in bulk alloy castings" Ivanov et al., Advanced Science 10 (2022) 2204315, the authors identified a potential misinterpretation of the experimental data. Further work confirms that the original conclusions cannot be supported, and accordingly the paper is retracted.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
Institute for Materials Research (IMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan.
The use of Ca metal in battery technology is a promising approach owing to its high energy density and sustainability. However, the increased battery resistance during extended cycling significantly narrows its application range. This study aimed to improve the long-term stability of Ca deposition by employing a dual-salt strategy based on calcium monocarborane, Ca(CBH), which demonstrated favorable Ca deposition characteristics as a single-salt electrolyte.
View Article and Find Full Text PDFDalton Trans
December 2024
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
Benzoate-bridged paddlewheel diruthenium(II,II) complexes ([RuII,II2(RArCO)(L)] (L = axial ligand); [RuII,II2]) exhibit reversible redox activity involving the oxidized species [RuII,III2]. The redox activity can be finely tuned over a broad potential range by altering the substituent R on the benzoate-bridging ligand RArCO. The electronic contributions of the substituents R depend on their type and position, as was empirically demonstrated by Hammett for substituents at the - and -positions.
View Article and Find Full Text PDFNPJ Quantum Mater
December 2024
I. Institute of Theoretical Physics, University of Hamburg, Notkestraße 9-11, 22607 Hamburg, Germany.
Superconductivity emerges from the spatial coherence of a macroscopic condensate of Cooper pairs. Increasingly strong binding and localization of electrons into these pairs compromises the condensate's phase stiffness, thereby limiting critical temperatures - a phenomenon known as the BCS-BEC crossover in lattice systems. In this study, we demonstrate enhanced superconductivity in a multiorbital model of alkali-doped fullerides (AC) that goes beyond the limits of the lattice BCS-BEC crossover.
View Article and Find Full Text PDFSci Technol Adv Mater
November 2024
WPI Advanced Institute for Materials Research, Tohoku University, Sendai, Japan.
A body-centered cubic (bcc) FeCo(B) is a current standard magnetic material for perpendicular magnetic tunnel junctions (-MTJs) showing both large tunnel magnetoresistance (TMR) and high interfacial perpendicular magnetic anisotropy (PMA) when MgO is utilized as a barrier material of -MTJs. Since the -MTJ is a key device of current spintronics memory, . spin-transfer-torque magnetoresistive random access memory (STT-MRAM), it attracts attention for further advance to explore new magnetic materials showing both large PMA and TMR.
View Article and Find Full Text PDFAdv Compos Hybrid Mater
November 2024
Power Generation Laboratory, Korea Electric Power Research Institute, Daejeon, 34056 Republic of Korea.
Unlabelled: A hatching-distance-controlled lattice of 65.1Co28.2Cr5.
View Article and Find Full Text PDFDalton Trans
December 2024
Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
Solid-phase rare earth monoxides have been recently synthesized thin film epitaxy. However, it has been difficult to synthesize heavy rare earth monoxides owing to their severe chemical instability. In this study, rocksalt-type heavy rare earth monoxides REOs (RE = Tb, Dy, Er) were synthesized for the first time, as single-phase epitaxial thin films.
View Article and Find Full Text PDFAnal Chim Acta
January 2025
Federal Institute for Materials Research and Testing, Division 1.1 - Inorganic Trace Analysis, Richard-Willstätter-Straße 11, 12489, Berlin, Germany; Federal Institute for Materials Research and Testing, Division 1.4 - Process Analytical Technology, Richard-Willstätter-Straße 11, 12489, Berlin, Germany. Electronic address:
Analyst
December 2024
Institut de Recherche Interdisciplinaire (IRI), CNRS USR 3078, Université Lille1, Parc de la Haute Borne, 50 avenue de Halley, BP 70478, 59658 Villeneuve d'Ascq, France.
Expression of concern for 'An impedimetric immunosensor based on diamond nanowires decorated with nickel nanoparticles' by Palaniappan Subramanian , , 2014, , 1726-1731, https://doi.org/10.1039/C3AN02045B.
View Article and Find Full Text PDFMicron
December 2024
Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea; Institute for Convergence Research and Education in Advanced Technology, Yonsei University, Seoul 03722, Republic of Korea; Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan.
Electron-beam irradiation of α-Mn triggers dramatic microstructural transformations. Transmission electron microscopy (TEM) reveals localized thinning and MnO formation within the irradiated area. Reduced thermal conductivity due to thinning suggests significant local temperature rise by electron-beam irradiation.
View Article and Find Full Text PDFNat Commun
December 2024
Humboldt Centre for Nano- and Biophotonics, Institute for Light and Matter, Department of Chemistry, University of Cologne, Greinstr. 4-6, Köln, Germany.
Thin film interference is integral to modern photonics, e.g., allowing for precise design of high performance optical filters, photovoltaics and light-emitting devices.
View Article and Find Full Text PDFNanoscale
December 2024
Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, F-33600 Pessac, France.
In this paper, we demonstrate that chiral J-aggregates of porphyrins are able to detect minute chiral impurities, in this case, the presence of right-handed quartz in acid-activated K10 montmorillonite clay. Aggregation and symmetry breaking of 5,10,15,20-(tetra-4-carboxyphenyl) porphyrin (TCPP) and 5,10,15,20-(tetra-4-sulfonatophenyl) porphyrin (TPPS) were observed upon interaction with acid-activated montmorillonite clay (MMT-K10). A panel of characterization techniques, including UV-visible, electronic circular dichroism, IR, and vibrational circular dichroism spectroscopies, as well as X-ray scattering, were employed to investigate the aggregation of the confined TPPS and TCPP.
View Article and Find Full Text PDFACS Nano
December 2024
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
Elemental doping of two-dimensional (2D) semiconductors is crucial for manipulating their electrical and optical properties and enhancing the performance of advanced 2D devices. However, doping methods, such as ion implantation and chemical vapor deposition, can produce various outcomes extensively, depending on the chemical environment. We systematically study the elemental doping of the monolayer MoS by using density-functional theory calculations, which identify thermally stable sites among atomic substitutions, surface adsorption, and lattice interstitials of 27 elemental dopants, along with their formation energies and charge transition levels.
View Article and Find Full Text PDFLangmuir
December 2024
WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University Sendai, Sendai, Miyagi 980-8577, Japan.
Adv Compos Hybrid Mater
November 2024
Department of Mechanical Engineering, Politecnico Di Milano, Milan, Italy.
Metal matrix composites (MMCs) offer asignificant boost to achieve a wide range of advanced mechanical properties and improved performance for a variety of demanding applications. The addition of metal particles as reinforcement in MMCs is an exciting alternative to conventional ceramic reinforcements, which suffer from numerous shortcomings. Over the last two decades, various categories of metal particles, i.
View Article and Find Full Text PDFPart Fibre Toxicol
November 2024
Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany.
Background: Human exposure to micro- and nanoplastic particles (MNPs) is inevitable but human health risk assessment remains challenging for several reasons. MNPs are complex mixtures of particles derived from different polymer types, which may contain plenty of additives and/or contaminants. MNPs cover broad size distributions and often have irregular shapes and morphologies.
View Article and Find Full Text PDFChem Commun (Camb)
December 2024
School of Chemistry, University of Birmingham, Edgbaston, UK.
Initiating or sustaining physical and chemical transformations with mechanical force - mechanochemistry - provides an opportunity for more sustainable chemical processes, and access to new chemical reactivity. These transformations, however, do not always adhere to 'conventional' chemical wisdom, making them difficult to design and rationalise. This challenge is exacerbated by the fact that not all mechanochemical transformations are equal, with mechanical force playing a different role in different types of processes.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
November 2024
Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai, 980-8577, Japan.
Tin (Sn)-based catalysts have been widely studied for electrochemical CO reduction reaction (CORR) to produce formic acid, but the intricate influence of the structural sensitivity in single-atom Sn (e.g., Sn-N-C) and polyatomic Sn (e.
View Article and Find Full Text PDFACS Nano
December 2024
Department of Physics and Astronomy, Birck Nanotechnology Center, and Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, Indiana 47907, United States.
Two-dimensional (2D) magnets, as an important member of the 2D material family, have emerged as a promising platform for spintronic devices. Herein, we report the chemical vapor deposition (CVD) growth of highly crystalline submillimeter-scale self-intercalated metallic 2D ferromagnetic (FM) trigonal chromium telluride (CrTe) flakes on inert mica substrates. Through magneto-optical and magnetotransport measurements, we unveil the exceptional magnetic properties of these 2D flakes.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
November 2024
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.
Although a widely used and important industrial chemical, carbon disulfide (CS) poses a number of hazards due to its volatility and toxicity. As such, the development of multifunctional materials for the selective capture and easy recognition of CS is one of the crucial issues. Herein, we demonstrate completely selective CS adsorption among trials involving HO, alcohols, volatile organic compounds (including thiol derivatives), N, H, O, CH, CO, NO, and CO.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
December 2024
BAM Federal Institute for Materials Research and Testing: Bundesanstalt für Materialforschung und -prüfung, 12200, Berlin, Germany.
Laboratory leaching tests are tools to assess the mobility of environmental contaminants released from granular materials. Comparative leaching tests were performed using four PFAS-contaminated soils whose concentration patterns of 10 selected perfluoroalkyl and polyfluoroalkyl substances (PFAS) differed due to the two types of contamination sources. This study aimed to evaluate the equivalence of two usual laboratory-scale leaching test procedures, batch and column percolation tests, at liquid-to-solid ratios (L/S) of 2 l/kg, which is the current practice within the German assessment framework, and 10 l/kg (relevant for some EU regulations such as the landfill directive).
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