Article
Polymer Science
Pablo Edmundo Antezana, Sofia Municoy, Gorka Orive, Martin Federico Desimone
Summary: The development of new materials is necessary in the medical field to replace damaged organs, improve wound healing, and provide an environment for new healthy tissue formation. This study introduced a bioink made with gelatin and alginate, which was 3D printed using an extrusion bioprinter. The bioink was loaded with Cannabis sativa oil extract, providing antimicrobial and antioxidant properties. This new biocompatible material has the potential to be an attractive alternative for treating soft-tissue infections and wound repair.
Article
Engineering, Biomedical
Shadab Abadpour, Essi M. Niemi, Linnea Strid Orrhult, Carolin Hermanns, Rick de Vries, Liebert Parreiras Nogueira, Havard Jostein Haugen, Dag Josefsen, Stefan Krauss, Paul Gatenholm, Aart van Apeldoorn, Hanne Scholz
Summary: This study reports the manufacturing of a 3D bioprinted double-layered scaffold using alginate/nanofibrillated cellulose (NFC) bioink to combine islets and adipose-derived stromal cells (ASCs) for beta cell replacement therapy. The results demonstrate that ASCs improve islet viability, glucose sensing, insulin secretion, and reduce pro-inflammatory cytokine secretion. Diabetic mice transplanted with islet-ASC scaffolds achieve normoglycemia and show elevated levels of C-peptide.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Qinghua Wei, Rongbin Yang, Daocen Sun, Jiayi Zhou, Mingyang Li, Yingfeng Zhang, Yanen Wang
Summary: The optimum composition of AS/PVA for bioprinting cartilage scaffold was determined through a combination of experimental methods and molecular simulations. The study found that a blend hydrogel with 8SA/2PVA ratio exhibited the best mechanical properties, pore structure, and printability.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Applied
Thomas H. Jovic, Tamsin Nicholson, Hari Arora, Kim Nelson, Shareen H. Doak, Iain S. Whitaker
Summary: Nanocelluloses have significant potential in bioprinting for tissue engineering, particularly for cartilage. Different structural formulations of nanocelluloses have been characterized and tested for printability, chondrogenicity, and biocompatibility. The crystalline nanocellulose formulation showed the best biological promise for bioprinting cartilage.
CARBOHYDRATE POLYMERS
(2023)
Review
Biochemistry & Molecular Biology
Qinghua Wei, Jiayi Zhou, Yalong An, Mingyang Li, Juan Zhang, Sheng Yang
Summary: This article summarizes the application of sodium alginate (SA) in biological soft tissue repair/regeneration, especially its use in tissue engineering with the advent of 3D bioprinting technology. The article reviews SA modification methods and provides a comparative analysis of the characteristics of various SA-based hydrogels. It also introduces various molding methods of SA-based hydrogels, analyzes and compares the processing characteristics and applications of different molding methods. Additionally, it reviews the applications of SA-based hydrogels in tissue engineering, analyzes the challenges in their applications, and discusses future research directions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Polymer Science
Izar Gorronogoitia, Uzuri Urtaza, Ana Zubiarrain-Laserna, Ana Alonso-Varona, Ane Miren Zaldua
Summary: Three-dimensional bioprinting combined with natural hydrogels is a promising technology for the treatment of various pathologies and tissue regeneration. This study focuses on the printability and physicochemical properties of alginate-based hydrogels and scaffolds. The results show that the microstructure of alginate has a significant impact on its printability and mechanical properties, emphasizing the importance of controlling the viscoelastic and mechanical properties for obtaining high-resolution and precise structures.
Article
Engineering, Manufacturing
Huijun Li, Yu Jun Tan, Raj Kiran, Shu Beng Tor, Kun Zhou
Summary: This study introduces two extrusion-based bioprinting approaches using a combination of cell-laden GelMA and Alg/MC, which effectively produce structures with geometric complexity while maintaining high structural integrity and cell viability. The methods involve alternate layer-by-layer printing and submerging the extrusion nozzle into a bath of Alg/MC to demonstrate improved printability and cell protection during UV exposure.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Jonas Hazur, Jonas Roeder, Jonas Czwalinna, Dirk W. W. Schubert, Aldo R. R. Boccaccini
Summary: The main challenge in extrusion-based bioprinting is to develop inks with multiple characteristics before, during, and after printing. Hydrogel microparticles (HMPs) are proposed to produce internally pre-crosslinked inks, which effectively improve printability. Rheological measurements reveal the increase in yield stress and viscosity, as well as the reduction in loss angle, after HMP pre-crosslinking. Additionally, pre-crosslinking significantly alters the hydrogel's internal microstructure and NIH/3T3 cells proliferate in HMP pre-crosslinked bioinks.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Article
Chemistry, Physical
Joseph Lovecchio, Marilisa Cortesi, Marco Zani, Marco Govoni, Dante Dallari, Emanuele Giordano
Summary: 3D printing has provided new opportunities for the fabrication of biocompatible hybrid pseudo-tissues. This study focuses on modifying a commercial 3D printer into a 3D bioplotter to control scaffold fiber thickness and porosity. The results demonstrate the feasibility of printing hydrogels commonly used for cell culture and tissue engineering applications.
Article
Chemistry, Multidisciplinary
Shuting Guo, Chuanglong He
Summary: A 3D bioprinted scaffold containing CGRP and PRN is proposed as a new method for effective repair of bone defects. The addition of CGRP and PRN loaded mesoporous silica nanoparticles into a hybrid bio-ink promotes migration and tube formation of HUVECs, aiding in the formation of a new capillary network during bone repair. The release of CGRP simulates the secretion of neuropeptides by sensory nerves, and PRN inhibits the binding process of catecholamine to beta-adrenergic receptor, co-promoting osteogenic differentiation of BMSCs and enhancing bone repair in a rat model.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Biomedical
Zhou Jian, Tian Zhuang, Tian Qinyu, Peng Liqing, Li Kun, Luo Xujiang, Wang Diaodiao, Yang Zhen, Jiang Shuangpeng, Sui Xiang, Huang Jingxiang, Liu Shuyun, Hao Libo, Tang Peifu, Yao Qi, Guo Quany
Summary: By optimizing the preparation of meniscus-derived bioink and utilizing a custom 3D bioprinting system, a biomimetic meniscal scaffold with optimal features in terms of morphology and components was successfully created. Comprehensive evaluations were conducted on cell viability, mechanics, biodegradation, and tissue formation to ensure the scaffold's feasibility and functionality for application in tissue engineering.
BIOACTIVE MATERIALS
(2021)
Article
Chemistry, Applied
Antonina Gospodinova, Vladislav Nankov, Slavcho Tomov, Murad Redzheb, Petar D. Petrov
Summary: This study demonstrates the extrusion printing of highly viscous and thixotropic hydroxyethylcellulose-based bioinks blended with various concentrations of sodium alginate (SA) and embedded with HeLa cells. The cell viability was shown to be inversely proportional to the relative SA content, and biocompatibility of the hydrogel matrix supported cell proliferation resulting in a larger number of cells. Cell viability was mainly affected by extrusion printing itself, with some cell death occurring during embedding in the hydrogels. After embedding the HeLa cells in blends containing 1 and 2.5 % SA, cell viability was not significantly affected by residence time before bioink extrusion.
CARBOHYDRATE POLYMERS
(2021)
Article
Biochemistry & Molecular Biology
Athmika Nagaraj, Punchappady Devasya Rekha
Summary: Biopolymers are important in tissue engineering, especially in the development of bioinks with suitable properties for printing and supporting cells. Alginate is a widely studied natural biopolymer due to its biocompatibility and ability to mix with other polymers. In this study, an exopolysaccharide called EPS-R17, produced by Rhizobium sp. PRIM17, was incorporated with alginate to create a bioink. The EPS-R17 showed good compatibility with keratinocytes and fibroblasts, and the EPS-R17-alginate bioink exhibited shear thinning behavior and gel-like properties. The bioink also demonstrated good compressive strength and cell viability when used in extrusion bioprinting. These findings highlight the potential of EPS-R17-alginate bioinks for bioprinting applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Biomedical
Ashkan Sedigh, Pejman Ghelich, Jacob Quint, Evelyn C. Mollocana-Lara, Mohamadmahdi Samandari, Ali Tamayol, Ryan E. Tomlinson
Summary: Bioprinting is a valuable technology for generating complex three-dimensional cell constructs. We have improved the precision and printability of bioprinting by optimizing printing parameters and using a fuzzy inference system as a computational method. Our results demonstrate that computational methods are cost-efficient tools for enhancing the accuracy and robustness of bioprinting.
Article
Biophysics
Ji Min Seok, Jae Eun Jeong, Sang Jin Lee, Seung Hyun Im, Jun Hee Lee, Wan Doo Kim, Kangwon Lee, Su A. Park
Summary: This study introduced a strategy utilizing HA nanoparticles and CSP process to enhance the mechanical and biological properties of SA material, successfully fabricating scaffolds with improved mechanical and biological properties for potential applications in bone-tissue regeneration and engineering.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Ananta Dutta, Surjya K. Pal, Sushanta K. Panda
Summary: In the realm of micro-Friction Stir Welding (FSW), this study investigates the influence of pinless and pin tool on hook formation, temperature evolution, and bonding mechanisms. The study reveals that pin tool improves joint strength and reduces axial force during traversing. Pin tool also exhibits a higher proportion of recrystallized grains compared to pinless tool, resulting in better weld quality.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Abdelmalek Habes, Mehdi Derradji, Oussama Mehelli, Fouad Benaliouche, Slimane Abdous, Youcef Medjaouri, Nour Chirine Abderrahim, Hakima Fodil, Mohamed El Amine Kadi
Summary: In recent years, there has been significant progress in advancing nanomaterials with exceptional properties for electromagnetic (EM) wave absorption. This study investigates the application of a novel thermosetting phenolic resin as a polymeric matrix for EM shielding, highlighting the enhancement of stability with the incorporation of zinc oxide nanoparticles.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Xiaoxing Zhang, Yongchao Luo, Kai Xu, Weihao Liu, Shuangshuang Tian, Benli Liu, Jiahao Wang, Feng Hu
Summary: This study calculates and analyzes the adsorption performance and sensing characteristics of Cu-MoTe2 for SF6 decomposition components. The results show that Cu-MoTe2 chemisorbs SO2 and H2S, while physisorbs SOF2. Cu-MoTe2 has the potential to be used as a chemical sensor material.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Xin Qu, Xinyu Sang, Yarong Lv, Ce Wang, Ping Hu, Quanyi Guo, Yong Liu
Summary: In this study, a PLLA-COI multilayer nanofiber membrane was prepared to prevent peritendinous adhesion, and it was found to have good cell compatibility and anti-adhesion effect, effectively promoting the recovery of Achilles tendon injury.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Ching-Yuan Ho, Chen-Yi Su, Wei-Zhe Hu
Summary: An equivalent electrical circuit (EEC) is established to understand the droplet-base electricity generation (DEG) mechanism, using voltage-time curve decomposition. The concept of Debye length is introduced to explain charge density at the interface between the ionic droplet and the PTFE surface. This study provides valuable insights into the exponential decay of output voltage and the improvement of solar panel performance in alternating rainy and dry weather through correct circuit design.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Iori Ono, Takeo Oku, Atsushi Suzuki, Sakiko Fukunishi, Tomoharu Tachikawa, Tomoya Hasegawa
Summary: The effects of adding rubidium (Rb) and ethylammonium (CH3CH2NH3, EA) to guanidinium [C(NH2)3, GA] based CH3NH3PbI3 perovskite solar cells were investigated. The lattice constants and (100)-orientation of EA and Rb-modified perovskite crystals increased compared to the as-prepared perovskite. The addition of GA and EA effectively improved the photovoltaic properties of the device under indoor light conditions.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Xuewu Li, Hongxing Wang, Zhiguo Xing, Yanfei Huang, Weiling Guo, Haidou Wang, Yanfang Zhang, Longlong Zhou
Summary: This study prepared a novel composite antireflective structure with slotted holes using FDTD simulation combined with femtosecond laser design to further improve the infrared anti-reflective performance. The results show that the antireflection performance of the simulated groove-hole composite structure is better than that of the individual groove and hole structures, and the nanoparticle structures can further improve the antireflection performance in the infrared region.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Sepideh Soltani, Hajar Ghanbari, S. Mohammad Mirkazemi
Summary: In this study, h-BN and r-BN structures were synthesized through controlled nitridation. The h-BN exhibited sheet-like morphology, while the r-BN formed needle-like hollow structures.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Wanying Zhang, Xiaoyuan Wang, Yibo Ai, Weidong Zhang
Summary: This study investigates the impact of oxygen corrosion on the mechanical properties of uranium and uranium alloys and develops a feature-guided decision tree algorithm for prediction. The research highlights crucial correlations discovered through feature engineering, improving the performance of machine learning models. The mechanical properties of uranium and uranium alloys after oxygen corrosion are successfully predicted with a prediction error of less than 5%.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Qiong Cheng, Yao Zhao, Juntao Zhuang, Ahmad M. Alshamrani
Summary: This study presents a model to simulate the transient dynamics of a car's hood door during an accident, with reinforced structure in the axial direction using graphene nanoplatelets. The results are verified through comparison with open-source results and deep neural networks. The study highlights the importance of graphene nanoplatelets in the composite system's transient and forced vibrations, and provides valuable suggestions for future structural designs.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Rostyslav Nizinkovskyi, Thorsten Halle, Manja Krueger
Summary: Cu-precipitation in reactor pressure vessel steels is a major concern for the degradation of mechanical properties. This study develops and implements a non-local phase-field model to investigate the equilibrium morphology of precipitates in the over-aged state. The model confirms that the precipitates should have an oblate lath-like shape, which is supported by experimental data. The orientation of the precipitates is consistent with literature. The mechanism of morphology accommodation is explained using the invariant-line method. However, the equilibrium values of elongation significantly deviate from experimental data, likely due to the metastable state of the precipitates during the coarsening process.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Xiaowei Li, Yafei Liu, Shiyu Luan, Deqing Ma, Xiaoyu Liu, Qiangbing Liu, Jinhui Wang
Summary: In this study, the hot deformation behavior of as-cast Mg-2Ho binary alloy under different strain rates and deformation temperatures was systematically studied. The microstructure and dynamic recrystallization mechanisms were analyzed using SEM and EBSD techniques. A strain-compensated Arrhenius constitutive equation and a PSO-BP ANN model based on machine learning were established to analyze the flow behavior. The experimental results showed that the flow stress decreased with increasing temperature and decreasing strain rate. The PSO-BP ANN model demonstrated good accuracy in predicting flow stress.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Jiaxin Liu, Guangkai Liao, Zhenyan Xie, Bowen Li, Lingna Cui, Yuejun Liu
Summary: This study investigated the rheological behavior of polyamide 6 (PA6) film during biaxial stretching and found that the elastic-plastic deformation during stretching affected the stress rebound or relaxation during heat setting. The relaxation spectrum and activation energy spectrum were calculated, revealing the process of stress relaxation as energy release and stress rebound as energy absorption. The results provide theoretical guidance for understanding the biaxial stretching deformation mechanism of polymer films.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Monisha Manathanath, Benu George, Juraij Kandiyil, Subramaniam Sujatha, Suchithra Tharamel Vasu, Sujith Athiyanathil, Unnikrishnan Gopalakrishna Panicker
Summary: This study explores a method that combines a biodegradable polymer scaffold with a photosensitizer for antibacterial photodynamic therapy. The results show a high inhibition rate against E. coli and S. aureus using this method.
MATERIALS TODAY COMMUNICATIONS
(2024)
Article
Materials Science, Multidisciplinary
Mohammad Hemmat Esfe, S. Ali Eftekhari, S. Mohammad Sajadi, Mohammad Hashemian, Soheil Salahshour, Seyed Majid Motallebi
Summary: In this study, an artificial neural network was used to predict the dynamic viscosity of MWCNT-ZnO (25:75)/SAE 10W40 oil nano-lubricant. The temperature, shear rate, and solid volume fraction were found to have significant effects on the dynamic viscosity, with shear rate being the most influential parameter.
MATERIALS TODAY COMMUNICATIONS
(2024)
