Article
Geosciences, Multidisciplinary
M. Ingalls, J. P. Grotzinger, T. Present, B. Rasmussen, W. W. Fischer
Summary: Phosphorus is crucial for cell biology, but it is scarce in modern marine environments due to its consumption by life or formation of apatite minerals through calcium titration. In this study, we measured the phosphate concentrations in Neoarchean carbonate facies and found that carbonates from that period were significantly enriched in carbonate-associated phosphate compared to modern marine carbonates. This suggests that early biosphere productivity was limited by electron availability rather than phosphate or other nutrients, which helps explain the central role of phosphorus in cellular molecules, metabolisms, and bioenergetics.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Materials Science, Coatings & Films
Rumana Akhter, Avi Bendavid, Paul Munroe
Summary: This study investigates the effects of different substrate bias voltages on the scratch adhesion strength and wear resistance of TiNiN coatings. The results show that the coating prepared at a bias voltage of -100 V exhibits the best scratch adhesion strength, and the wear resistance of the coatings improves as the bias voltage increases. The failure mechanisms of the coatings were also studied through observation of crack patterns and residual stress values.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Coatings & Films
P. Farjam, M. Luckabauer, E. G. de Vries, V. R. Rangel, E. E. G. Hekman, G. J. Verkerke, J. Rouwkema
Summary: Long-term fixation of orthopaedic implants can be enhanced by depositing bioactive bone-like coatings on the implants. This study identified the optimal parameters for depositing osteo-conductive Calcium Phosphate (CaP) coatings on PolyCarbonate-Urethane (PCU) foils. The deposited CaP coatings demonstrated high stability and did not affect cell viability or proliferation, while enhancing cell-mediated calcium deposition. This presents a promising method for integrating PCU implants onto bone.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Geochemistry & Geophysics
Matthew S. Dodd, Zihu Zhang, Chao Li, Thomas J. Algeo, Timothy W. Lyons, Dalton S. Hardisty, Sean J. Loyd, David L. Meyer, Benjamin C. Gill, Wei Shi, Wei Wang
Summary: Phosphorus is crucial in oceanic ecosystems over geological timescales, affecting global carbon cycling and redox conditions. Experimental studies have shown that CAP can be used as a tool for reconstructing ancient oceanic phosphate concentrations, providing valuable insights into the ocean's nutrient history.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Michal Bartmanski, Lukasz Pawlowski, Aleksandra Mielewczyk-Gryn, Gabriel Strugala, Krzysztof Rokosz, Sofia Gaiaschi, Patrick Chapon, Steinar Raaen, Andrzej Zielinski
Summary: Nanohydroxyapatite coatings with nanosilver and nanocopper were fabricated and studied in this work. The addition of copper was found to increase the hardness and adhesion of the coatings, while the presence of nanosilver had no significant influence on the adhesion. The coatings were characterized using various techniques including SEM, AFM, XRD, GDOES, and EDX.
Article
Materials Science, Coatings & Films
Rumana Akhter, Zhifeng Zhou, Zonghan Xie, Paul Munroe
Summary: The study investigates the deformation mechanisms of TiSiN coatings prepared at different bias voltages, showing that coatings deposited at lower bias voltage have higher hardness and improved scratch resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Orkun Ersoy, Sinan Fidan, Harun Kose, Dilek Guler, Omer ozdover
Summary: This study investigated the effect of CaCO3 particle size on the scratch behavior of rapid alkyd-based wood coatings. Results showed that finer-grained CaCO3 particles experienced plastic plowing-type deformation, displaying high scratch resistance, while coatings using coarser-grained CaCO3 experienced more extensive plastic deformation due to weaker filler-polymer interface and breakage of larger coating pieces from the surface.
Article
Materials Science, Coatings & Films
Alessia Bruera, Pietro Puddu, Stephan Theimer, Maria Villa-Vidaller, Alexander List, Giovanni Bolelli, Frank Gaertner, Thomas Klassen, Luca Lusvarghi
Summary: This study investigates the adhesion of cold-sprayed copper particles onto differently adjusted hardness and roughness values of AISI 304 stainless steel surfaces. With SEM analysis and nano-indentation tests, it was found that grit-blasting causes severe plastic deformation of the surface, while vacuum annealing can restore the original hardness. The adhesion of cold-sprayed copper particles was found to be higher on roughened and softened substrates than on polished surfaces.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Bin Peng, Yu X. Xu, Jian W. Du, Li Chen, Kwang Ho Kim, Qimin Wang
Summary: Metal-ion etching is used to modify substrate surfaces and improve the adhesion of coatings. Pre-etching introduces defects and increases surface roughness, resulting in enhanced adhesion between the coating and the substrate. However, it also leads to increased roughness of the coating surface, affecting the coating's friction performance.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Coatings & Films
Martin Zawischa, Muhammad Muiz Azri Bin Mohamad Supian, Stefan Makowski, Frank Schaller, Volker Weihnacht
Summary: This article examines the failure characteristics and adhesion evaluation of hydrogen-free amorphous carbon coatings through scratch testing with different indenter tip radii. The study shows that the failure mode of the coating can be reliably predicted and adjusted by the choice of the indenter radius, with predominant spallations and bending cracks being the main failure modes. The concept of adhesion assessment by comparing the relative size of delaminated area was expanded for variable indenter sizes and failure mechanisms, allowing for direct comparison of scratch results for a wide range of coating thicknesses.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Yizhi Zhuo, Verner Hakonsen, Siqi Liu, Tong Li, Feng Wang, Sihai Luo, Senbo Xiao, Jianying He, Zhiliang Zhang
Summary: Enabling surfaces with passive anti-icing properties is important for mitigating the harm caused by ice accretion. This study presents a robust icephobic coating with high toughness, strong adhesion, and self-healing capability. The coating exhibits low ice adhesion strength, sustains its icephobicity after severe mechanical loading, and maintains its performance in real complex environments.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Carmen Nejneru, Diana-Petronela Burduhos-Nergis, Mihai Axinte, Manuela Cristina Perju, Costica Bejinariu
Summary: The behavior of the deposited layer on submersible wastewater pump rotors and its impact on liquid flow were studied. It was found that the phosphate layer is relatively porous and hydrophilic, which can form a boundary layer to protect the rotor surface from the impacts of microparticles.
Article
Materials Science, Coatings & Films
Netrananda Behera, Subba Rao Medabalimi, M. R. Ramesh
Summary: The effect of different impact angles and temperatures on the volumetric erosion loss of WC-Co-Cr coating containing 10% Mo was investigated. The coating was developed using the High Velocity Oxy Fuel (HVOF) process on a titanium substrate. The results showed that WC-Co-Cr coating had better scratch resistance and lower volumetric erosion loss compared to WC-Co-Cr/Mo coating.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Bozena Losiewicz, Patrycja Osak, Joanna Maszybrocka, Julian Kubisztal, Sylwia Bogunia, Patryk Ratajczak, Krzysztof Aniolek
Summary: The method of producing calcium phosphate coatings has a significant impact on the properties of the final product, with electrochemically assisted deposition (ECAD) being particularly important for its high repeatability at room temperature and neutral pH. Studies have shown that under optimized conditions, amorphous calcium phosphate coatings with good biocompatibility can be obtained for use in simulated body fluids.
Article
Materials Science, Multidisciplinary
Josef Daniel, Radek Zemlicka, Mostafa Alishahi, Pavla Karvankova, Pavel Soucek, Daniel Karpinski, Tomas Fort, Hamid Bolvardi, Andreas Luemkemann, Petr Vasina
Summary: This study investigates the behavior of two different AlCrN coatings under cyclic impact loading. It is found that the structure and mechanical properties of the coatings are closely related to the deposition conditions and ion energy. The impact behavior of coatings in the metallic regime is not affected by the deposition conditions, while the coatings deposited in the poisoned mode are improved by increasing the ion energy.
Article
Engineering, Biomedical
Xinyao Zhu, Yifan Liu, Jing Ye, Wei Xu, Xuexia Zhao, Tianyan Liu
Summary: This study reveals the adverse effect of acid on dentin in terms of degradation of its fracture toughness. The peritubular dentin plays a significant role in enhancing the dentin's fracture resistance capability. The findings highlight the importance of structural integrity for dentin.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Priya Ranganathan, Vijayakumari Sugumaran, Bargavi Purushothaman, Ajay Rakkesh Rajendran, Balakumar Subramanian
Summary: The study aims to design and fabricate an ultra-easier multi-functional biomedical polymeric scaffold loaded with unique equimolar Ca:P phasic bioactive glass material. The results showed that the G:BG (1:2) ratio is the more appropriate composition for enhanced bio-mineralization and higher surface area. The scaffold can induce mitogenesis in osteoblast cells for hard tissue regeneration and rapid collagen secretion in fibroblast cells for soft tissue regeneration.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Ziad Guerfi, Oum keltoum Kribaa, Hanane Djouama
Summary: Hydroxyapatite, a biocompatible and bioactive ceramic material, has been widely studied in fields such as orthopedics and plastic surgery. The use of computational tools, especially density functional theory, has become increasingly important in research. In this study, Hydroxyapatite was synthesized using the double decomposition method and quantum mechanical computations were performed using density functional theory. The experimental and computational results confirmed the successful synthesis of Hydroxyapatite and showed good agreement in spectroscopic characterizations.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Sally AbdulHussain Kadhum, Nassier A. Nassir
Summary: In this research, porous composites were successfully prepared and reinforced for bone scaffold applications. The functional groups, pore structure, and composition distribution of the materials were characterized using techniques such as FTIR, Atomic Force Microscopy (AFM), and Scanning Electron Microscopy (SEM).
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Veronika Geiger, Felicitas Mayinger, Moritz Hoffmann, Marcel Reymus, Bogna Stawarczyk
Summary: The study investigated the mechanical properties of four additively manufactured denture base resins in different measurement environments, and found that the measurement environment impacts the strength and fracture toughness of the materials.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Junxiao Wang, Amatjan Sawut, Rena Simayi, Huijun Song, Xueying Jiao
Summary: The development of cost-effective and eco-friendly conductive hydrogels with excellent mechanical properties, self-healing capabilities, and non-toxicity is of great significance in the field of biosensors.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Yijun Zhou, Lisa Ho, Ayan Samanta, Philip Procter, Cecilia Persson
Summary: In this study, soft, non-setting biomaterials based on Hyalectin gels and different morphological parameters of hydroxyapatite (HA) particles were evaluated as potential augmentation materials for orthopaedic implant fixation. The results showed that constructs reinforced with irregularly shaped nano-HA particles and spherically shaped micro-HA particles had significantly higher pull-out force compared to the control group.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Mehdi Jahandardoost, Donald Ricci, Abbas S. Milani, Mohsen Jahandardoost, Dana Grecov
Summary: Tubular flow diverters are important for treating cerebral aneurysms. A new design called VR-eCLIPs has been developed to cover the neck of challenging bifurcation aneurysms. A finite element model has been used to simulate the implantation processes of VR-eCLIPs and assess potential plastic deformation.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Marek Traczynski, Adam Patalas, Katarzyna Roslan, Marcin Suszynski, Rafa l Talar
Summary: This article evaluates the forces acting on intravenous needles during insertion into the skin and selects the most suitable model for future research. The experimental results show that needle size, insertion angle, and insertion speed have an influence on the measured force values.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Chester Jar, Andrew Archibald, Monica Gibson, Lindsey Westover
Summary: This study evaluates the ASIST technique for assessing the stability of dental implants. The results show that the ASIST technique can reliably measure the interfacial stiffness of dental implants, which is not significantly influenced by different abutment types. This method may provide an improved non-invasive way to measure the stability of dental implants.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Ali Kamali, Kaveh Laksari
Summary: In this paper, a UNet-based neural network model (El-UNet) is developed to infer the spatial distributions of mechanical parameters. The El-UNet shows superior performance in terms of accuracy and computational cost compared to other neural network models. A self-adaptive spatial loss weighting approach is proposed, which achieves the most accurate reconstructions in equal computation times.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Chunyan Yu, Yanju Lu, Jinhui Pang, Lu Li
Summary: In this study, a safe and effective hemostatic composite sponge was developed by combining chitosan and hydroxypropylmethylcellulose (HPMC). The sponge exhibited excellent flexibility and rapid hemostatic ability in vitro. In vivo assessments showed that the sponge had the shortest clotting time and minimal blood loss.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Zhongliang Yu, Lin Yu, Junjie Liu
Summary: The study proposes incorporating functionally graded tablets into nacreous composites to enhance both stiffness and damping properties. Analytical formulae and numerical experiments demonstrate the effectiveness of this design, surpassing existing homogeneous composites in performance.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Marc Graham, Sandra Klinge
Summary: This study investigates the macroscopic diffusion behavior of heterogeneous gels using a homogenization method in a finite element framework. Two materials, calcifying PDMA and PAAm, were studied, and the results show that the diffusivity of PDMA has a strong nonlinear dependence on the solute molecule radius.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Abdur-Rasheed Alao
Summary: This study aimed to find the optimal sandblasting parameters for roughening YTZP surfaces. Through experimental and statistical analysis, the best setting was found to be IA = 45 degrees, AP = 110 μm, ST = 20 s, and P = 400 kPa, which resulted in the maximum surface roughness, phase transformation, and shear bond strength.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)