Article
Materials Science, Ceramics
Ryan D. Dempsey, Xiaoqing He, Jonathan A. Scott, David W. Lipke
Summary: A powder-based bottom-up processing scheme is used to produce ceramic nanocomposites, involving internal displacement reactions between solid solution powders and metallic reactants. This scheme is demonstrated for the production of titanium carbide nanocomposites with tungsten inclusions. The process involves heat treatment of mixed carbide powders followed by spark plasma sintering, and the resulting microstructures of the nanocomposites closely resemble the building blocks.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Coatings & Films
Hanqing Che, Andre C. Liberati, Xin Chu, Meixin Chen, Amir Nobari, Phuong Vo, Stephen Yue
Summary: Cold spray technology can metallize polymers by spraying low melting point metal powders, improving their deposition efficiency. Lowering the melting points of feedstock powders can increase their deposition efficiency on polymeric substrates.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Wenge Chen, Yixiao Yang, Qian Zhao, Xiaoteng Liu, Yong-Qing Fu
Summary: The mechanical properties of graphene and metal-coated graphene were investigated using nano-indentation method and first principle calculations. Significant charge transfers were found to enhance the bond strengths of both C-C and metallic bonds.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Coatings & Films
S. V. Klinkov, V. F. Kosarev
Summary: This study utilizes numerical simulation and experimental data to verify the interaction between ceramic and metal particles during cold spraying, as well as the impact of ceramic particle content in the initial powder mixture on deposition efficiency. The results provide important insights for quantitative descriptions of deposition efficiency and ceramic content in the coating, while also discussing the effects of particle characteristics on the outcomes.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2021)
Article
Engineering, Chemical
M. Sherif El-Eskandarany, Naser Ali, Fahad Al-Ajmi, Mohammad Banyan, Ahmed A. Al-Duweesh
Summary: This study explores the effect of different cold rolling stages on the hydrogenation properties of recycled magnesium rods and the impact of subsequent reactive ball milling on the final product. The results show that the gas absorption/desorption kinetics of the materials are improved after cold rolling and ball milling treatment, resulting in a longer cycle life at lower temperatures.
Article
Chemistry, Multidisciplinary
Kai Han, Kostiantyn Sakhatskyi, Jiance Jin, Qinyuan Zhang, Maksym Kovalenko, Zhiguo Xia
Summary: This study presents a novel cold sintering technique to fabricate transparent TPP2MnBr4 ceramic wafers with high optical transparency and exceptional scintillation performance, enabling high spatial resolution X-ray medical imaging.
ADVANCED MATERIALS
(2022)
Article
Environmental Sciences
Filomena Sannino, Michele Pansini, Antonello Marocco, Alessia Cinquegrana, Serena Esposito, Olimpia Tammaro, Gabriele Barrera, Paola Tiberto, Paolo Allia, Domenico Pirozzi
Summary: This study investigates the use of tailor-made magnetic metal-ceramic nanocomposites for removing sulfanilamide, a commonly used sulfonamide antibiotic, from water. By modifying the patented synthesis process, the efficiency of sulfanilamide removal is maximized and the applicability of the materials is extended. The pH is found to have a significant effect on the removal, with two possibly coexisting mechanisms of adsorption based on polar and hydrophobic interactions. The adsorption kinetics can be described by the pseudo second-order model. The adsorption isotherms of different materials can be described by different models.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Materials Science, Multidisciplinary
F. Rahimi Mehr, M. Salavati, A. Morgenthal, S. Kamrani, C. Fleck
Summary: The study investigated the consolidation process and density distribution of Mg-SiC nanocomposite powder using computational finite element modeling and experimental methods. Increasing SiC nanoparticle content led to harder compressibility and lower relative density. The modified DPC model was effective in predicting the impact of SiC nanoparticle density distribution on powder compressibility.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Fei Jin, Duojie Wu, Yani Lu, Zizhao Pan, Meng Gu, Hong Wang
Summary: In this work, oxygen vacancy-regulated La0.7Ca0.3MnO3-delta:Ag (LCMO:A) nanocomposite thin films were synthesized and investigated for their high temperature coefficient of resistance (TCR) values. The effects of oxygen pressures on the lattice parameter, T-p value, and Mn4+ concentration in the films were studied. The LCMO:A nanocomposite thin film prepared with optimal oxygen pressures exhibited a record high TCR value of approximately 37% K-1, making it a promising candidate for applications in bolometers.
JOURNAL OF MATERIOMICS
(2022)
Article
Environmental Sciences
Kyungki Beak, Moonhee Choi, Dong Hyun Kim, Yiseul Yu, Jayaraman Theerthagiri, Amal M. Al-Mohaimeed, Yangdo Kim, Hyeon Jin Jung, Myong Yong Choi
Summary: The use of silane coupling agents in surface treatment enhanced the dielectric properties of multilayer ceramic capacitors and increased surface gloss. Specifically, the dielectric constant of the TMSPA-treated ceramic powder sintered at 1200 degrees C increased from 881 to 2382, while the dielectric loss decreased from 1.96% to 1.34%. The TMSPA treatment significantly improved the physical and dielectric properties of the multilayer ceramic sheet.
Article
Materials Science, Multidisciplinary
Yuhang Zhang, Jiejie Li, Hongjian Zhou, Yiqun Hu, Suhang Ding, Re Xia
Summary: In this study, the cold welding behavior and mechanical strength of Cu50Zr50 metallic glass nanowires in head-to-head contact were investigated using molecular dynamics simulation, revealing that desirable weld quality can be achieved at room temperature. An increase in welding velocity was found to decrease mechanical strength, while the effect of temperature on weld quality was not significant. Additionally, the elongation ability of welded MGNWs increased with larger nanowire diameters, and smaller diameters yielded better weld quality due to the size effect of metallic glass.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Engineering, Civil
Chunwei Zhang, Limin Wang, Arameh Eyvazian, Afrasyab Khan, Tamer A. Sebaey, Naeim Farouk
Summary: This article analyzes the damping vibration behavior of a metal foam nanocomposite plate reinforced with GOPs in a thermal environment, considering various parameters such as GOPs' weight fraction, foundation parameters, porosity coefficients, and thermal environment. The results show that the dynamic behavior of GOPRMF plate significantly depends on these parameters.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Materials Science, Ceramics
Camila C. Lopes, Wagner A. Pinheiro, Daniel Navarro da Rocha, Jose G. Neves, Americo Bortolazzo Correr, Jose R. M. Ferreira, Rafael M. Barbosa, Jefferson R. F. Soares, Jheison L. Santos, Marcelo H. Prado da Silva
Summary: In this study, hydroxyapatite-graphene oxide (HA-GO) nanocomposites were produced and the influences of different concentrations of GO on their morphological and physicochemical properties were observed. The results indicated that HA-GO nanocomposites exhibited good bioactivity properties and showed a high level of cell viability when the concentration of GO was increased. These findings suggest that HA-GO nanocomposites have potential as bioactive bone grafts and promising biomaterials for bone tissue regeneration, especially at higher concentrations of GO.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
N. R. Overman, M. J. Olszta, M. Bowden, X. Li, A. Rohatgi, S. N. Mathaudhu, G. J. Grant, S. A. Whalen
Summary: Friction consolidation is a solid phase processing methodology that densifies material through high-shear deformation and pressure at elevated temperature, known for producing extremely refined and homogeneous microstructures, off-axis texture development, and improved material properties.
MATERIALS & DESIGN
(2021)
Article
Polymer Science
Aurora Magnani, Simone Capaccioli, Bahareh Azimi, Serena Danti, Massimiliano Labardi
Summary: This study demonstrated the mapping of effective converse piezoelectric coefficient in poly(vinylidene fluoride) nanofibers with BaTiO3 nanoparticles using piezoresponse force microscopy. The analysis was conducted in a peculiar dynamic mode suitable for compliant materials. The results revealed a decreased piezoelectric activity at the nanoparticle site compared to the polymeric fiber, indicating a tradeoff between the dielectric constants and piezoelectric coefficients of the materials, as well as the orientation of polar axes.
Article
Chemistry, Applied
Roberto Fagotto Clavijo, Marta Riba-Moliner, Arantzazu Gonzalez-Campo, Jordi Sort, Eva Pellicer, Konrad Eiler
Summary: Highly porous Ni films were synthesized using custom-made PS-b-P4VP block copolymer micelles as a soft template. The Ni films exhibited large pores with diameters varying from 25 to 600 nm (1:1) and from 10 to 230 nm (1:4). Compared to dense Ni films and highly mesoporous Ni films with monodisperse 10 nm wide pores, the porous Ni films showed significantly improved electrocatalytic performance for hydrogen evolution reaction (HER) in alkaline media, with lower overpotential and better long-term stability.
Article
Chemistry, Multidisciplinary
Arnon Fluksman, Aritz Lafuent, Zhi Li, Jordi Sort, Silvia Lope-Piedrafita, Maria Jose Esplandiu, Josep Nogues, Alejandro G. Roca, Ofra Benn, Borja Sepulveda
Summary: In this study, metal iron based magnetoplasmonic drug-loaded nanocapsules (MAPSULES) were developed to enhance the efficacy of cancer nanotherapies locally. The MAPSULES combine powerful external magnetic concentration in the tumor and efficient photothermal actuation to boost the drug therapeutic action at ultralow drug concentrations. The results show that this approach has the potential to significantly amplify the therapeutic effects of drugs for different diseases.
Review
Chemistry, Multidisciplinary
Ferran Pujol-Vila, Pau Guell-Grau, Josep Nogues, Mar Alvarez, Borja Sepulveda
Summary: Soft optomechanical systems have the ability to respond reversibly to external stimuli by changing their properties. They combine the optical properties of nanomaterials with the deformability of soft polymers, enabling the development of mechanically tunable optical systems, sensors, and actuators. This review summarizes the recent progress in soft optomechanical systems for mechanical sensing, optical modulation, and light-induced mechanical actuators, and analyzes the limitations and future prospects of these systems.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhengwei Tan, Julius de Rojas, Sofia Martins, Aitor Lopeandia, Alberto Quintana, Matteo Cialone, Javier Herrero-Martin, Johan Meersschaut, Andre Vantomme, Jose L. Costa-Kramer, Jordi Sort, Enric Menendez
Summary: Magneto-ionics is a promising technology for energy-efficient spintronics, but the post-stimulated behavior of magneto-ionic systems is not well-controlled. In this study, we demonstrate a voltage-controllable N ion accumulation effect on the outer surface of CoN films, allowing for control of magneto-ionic properties during and after voltage pulse actuation. This effect has potential applications in neuromorphic computing, such as post-stimulated neural learning.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Zhengwei Tan, Zheng Ma, Laura Fuentes, Maciej Oskar Liedke, Maik Butterling, Ahmed G. Attallah, Eric Hirschmann, Andreas Wagner, Llibertat Abad, Nieves Casan-Pastor, Aitor F. Lopeandia, Enric Menendez, Jordi Sort
Summary: Magneto-ionics refers to controlling magnetic properties of materials through voltage-driven ion motion. A nanoscale-engineered magneto-ionic architecture is proposed, which significantly enhances cyclability by inserting a highly nanostructured Ta layer between a solid electrolyte and a liquid electrolyte. This strategy combines the benefits of solid and liquid electrolytes to boost magneto-ionics.
Article
Nanoscience & Nanotechnology
P. Monalisha, Zheng Ma, Eva Pellicer, Enric Menendez, Jordi Sort
Summary: This study exploits voltage-driven nitrogen ion motion in transition metal nitride thin films to emulate biological synapses, achieving distinct multilevel non-volatile magnetic states and successfully simulating essential synaptic functionalities of the human brain. The device exhibits excellent synaptic properties and is suitable for hardware implementation of neuromorphic computing.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Muireann de h-Ora, Aliona Nicolenco, P. Monalisha, Tuhin Maity, Bonan Zhu, Shinbuhm Lee, Zhuotong Sun, Jordi Sort, Judith MacManus-Driscoll
Summary: Tuning the properties of magnetic materials through voltage-driven ion migration allows for energy-efficient and non-volatile magnetic memory and neuromorphic computing. We demonstrated significant changes in magnetic moment and coercivity in an array of CFO nanopillar electrodes with an applied voltage, along with fast magneto-ionic response and high cyclability. The magnetic switching is attributed to the modulation of oxygen content in CFO, and the self-assembled nanopillar structures emulate various synaptic behaviors for analog computing and high-density storage. CFO nanopillar arrays have the potential to be used as interconnected synapses for advanced neuromorphic computing applications.
Article
Nanoscience & Nanotechnology
Arnon Fluksman, Aritz Lafuente, Ron Braunstein, Eliana Steinberg, Nethanel Friedman, Zhanna Yekhin, Alejandro G. Roca, Josep Nogues, Ronen Hazan, Borja Sepulveda, Ofra Benny
Summary: Multifunctional drug-loaded polymer-metal nanocapsules have gained increasing attention in drug delivery due to their ability to respond to physicochemical stimuli. This study demonstrates a versatile fabrication strategy to incorporate different functional metals with tailored magnetic, optical, or chemical properties on solid drug-loaded polymer nanoparticles. The results show enhanced drug effects and improved control over biomedical applications using these hybrid nanocapsules.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Zheng Ma, Laura Fuentes-Rodriguez, Zhengwei Tan, Eva Pellicer, Llibertat Abad, Javier Herrero-Martin, Enric Menendez, Nieves Casan-Pastor, Jordi Sort
Summary: Magneto-ionics is a unique approach to control magnetism with electric field. This study demonstrates wireless control of magnetism through induced polarization in conducting materials, providing a new pathway for voltage-driven magnetism control. The results have potential applications in various fields such as bioelectronics, catalysis, neuromorphic computing, and wireless communications.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
I. V. Golosovsky, I. A. Kibalin, A. Gukasov, A. G. Roca, A. Lopez-Ortega, M. Estrader, M. Vasilakaki, K. N. Trohidou, T. C. Hansen, I. Puente-Orench, E. Lelievre-Berna, J. Nogues
Summary: This comprehensive study presents the use of polarized neutron powder diffraction to investigate Fe3O4/Mn3O4 core/shell nanoparticles. The results reveal that at low fields, the Fe3O4 and Mn3O4 magnetic moments are antiferromagnetically coupled, while at high fields, they become parallel. The reorientation of the Mn3O4 shell moments is associated with a gradual transition of local magnetic susceptibility from anisotropic to isotropic under the applied field. Additionally, the magnetic coherence length of the Fe3O4 cores shows unusual field dependence due to the competition between antiferromagnetic interface interaction and Zeeman energies. This study demonstrates the potential of polarized neutron powder diffraction for complex multiphase magnetic materials.
Article
Materials Science, Multidisciplinary
Aleksandra Bartkowska, Oriol Careta, Adam Benedict Turner, Andreu Blanquer, Elena Ibanez, Margarita Trobos, Carme Nogues, Eva Pellicer, Jordi Sort
Summary: Porous FeMn(-xAg) alloys were fabricated through powder metallurgy methods. The effects of porosity and Ag addition on the microstructure, biodegradability, magnetic and mechanical properties of the alloys were investigated. Cytocompatibility, inflammatory cytokine response, and antibacterial effect studies were also conducted. The fabricated alloys exhibited a macro- and nanoporous structure with uniformly distributed silver particles. The biodegradability tests showed higher release of Mn compared to Fe, without significant differences between the alloys. The degradation products mainly consisted of Fe, Mn, O, and compounds enriched in Ca, P, and Cl. The as-sintered alloys showed low saturation magnetization values, which did not significantly increase with immersion time. The biocompatibility results indicated that all tested alloys were non-cytotoxic, but the addition of Ag might interfere with cell proliferation. However, the ions released by the FeMn(-xAg) alloys did not induce an inflammatory response in macrophages. The obtained results on microbiological interactions revealed a significant reduction in the total biofilm biomass of both live and dead bacteria after 24 hours in Ag containing FeMn-5Ag surfaces, although no significant bactericidal effect was observed at 4 hours between FeMn control and FeMn-5Ag.
MATERIALS ADVANCES
(2023)
Review
Physics, Multidisciplinary
A. G. Roca, J. F. Lopez-Barbera, A. Lafuente, F. Ozel, E. Fantechi, J. Muro-Cruces, M. Hemadi, B. Sepulveda, J. Nogues
Summary: Nanotherapies, particularly photothermal therapy using iron oxide nanoparticles, have gained increasing interest in cancer treatment due to their high efficacy and reduced side effects. The photothermal performance of iron oxide nanoparticles varies depending on the light wavelength and physiochemical properties. Fe3O4 nanoparticles tend to perform better than gamma-Fe2O3 counterparts, especially in the second biological window. FeO, which has not been explored in photothermal therapy, shows promising absorption properties. Furthermore, the enhanced properties of iron oxide nanoparticles in the second spectral window have potential applications beyond cancer treatment.
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
(2023)
