Review
Materials Science, Multidisciplinary
Mir Saman Safavi, Frank C. Walsh, Maria A. Surmeneva, Roman A. Surmenev, Jafar Khalil-Allafi
Summary: Hydroxyapatite has become a crucial coating material for bioimplants, requiring controlled surface roughness/porosity, corrosion resistance, and favorable tribological behavior. Electrodeposition offers advantages in controlling thickness and morphology, but there are still technical challenges that require further research.
Review
Materials Science, Multidisciplinary
Meifeng He, Lvxin Chen, Meng Yin, Shengxiao Xu, Zhenyu Liang
Summary: Magnesium alloy is a third-generation biomedical material that promotes bone tissue regeneration. It has the advantages of biodegradability, closer Young's modulus to human bone, osteoinductive and antimicrobial properties. However, its rapid corrosion rate and mechanical integrity compromise pose challenges for bone implantation. Various machining, alloying, and optimization techniques are used to improve the properties of magnesium implants. The review also investigates the corrosion and wear behavior of magnesium alloys and the impact of coating on biocompatibility and corrosion properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Biomedical
Zhenglong Dou, Shuiling Chen, Jiacheng Wang, Li Xia, Manfred F. Maitz, Qiufen Tu, Wentai Zhang, Zhilu Yang, Nan Huang
Summary: In order to control the corrosion of magnesium bioresorbable stents, a built-up composite film consisting of multiple layers was developed. This film provides corrosion resistance and biological functions. The composite film showed synergistic effects, maintaining the mechanical integrity of the stents for up to 3 months and achieving complete biodegradation and re-endothelialization.
BIOACTIVE MATERIALS
(2023)
Article
Chemistry, Applied
Liqian Shi, Shanshan Chen, M. Babar Shahzad, Zhiyong Wei, Bing Leng
Summary: Surface modification is crucial for improving the corrosion resistance of magnesium alloys. This paper proposes a reliable protective coating, PBAT, with high elongation at break, for biodegradable magnesium alloy stents. The PBAT-F coating shows superior corrosion resistance, barrier performance, mechanical properties, hemocompatibility, and cell proliferation rates compared to PDLLA. PBAT is an excellent coating material for vascular stents, while PBAT composite coating has potential as a protective coating for magnesium stents.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Physical
Zhihao Chen, Zihao Zhang, Yuanyong Ouyang, Yun Chen, Xiaoshuang Yin, Ying Liu, Hanjie Ying, Wenzhong Yang
Summary: In order to enhance the corrosion resistance and biocompatibility of AZ31 Mg alloy, researchers prepared a polycaprolactone/ collagen/cerium-hydroxyapatite (PCL/Col/Ce-HA) fiber coating using electrospinning technique. The PCL/Col/Ce-HA fiber coating with 5 wt% of Ce-HA showed the densest surface with uniform fiber size and provided a firm physical barrier against corrosive ions. Electrochemical tests showed that the corrosion rate of the PCL/Col/Ce-HA fiber coating was almost 30 times lower than the bare AZ31 Mg alloy. The lowest hemolysis rate and excellent cell biocompatibility of the PCL/Col/Ce-HA fiber coating also met the requirements for biomedical material application.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Materials Science, Coatings & Films
Juyi Yang, Yanbin Zhao, Jianwei Dai, Linyuan Han, Qiangsheng Dong, Lu Zhang, Jing Bai, Feng Xue, Paul K. Chu, Chenglin Chu
Summary: In this study, a polyethyleneimine/polyacrylic acid (PEI/PAA) multilayered coating is prepared by layer-by-layer (LbL) assembly on the WE43 Mg alloy, followed by mineralization of hydroxyapatite (HA) on the LbL multilayer. The composite coating with a compact surface shows improved corrosion resistance. The formation mechanism, structure, and properties of the organic/inorganic composite coating are investigated systematically.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Applied
Ziqi Liu, Tianxiao Wang, Yingchao Xu, Chen Liang, Guangyu Li, Yunting Guo, Zhihui Zhang, Jianshe Lian, Luquan Ren
Summary: A double-layer dicalcium phosphate dihydrate (DCPD) sandwiched siloxane composite coating was prepared on Mg alloy via chemical conversion, immersion treatment, and biomimetic deposition methods to solve the problem of fast degradation of magnesium alloy. The composite coated sample exhibited a much smaller corrosion current density compared to Mg alloy, and the coating provided continuous protection to the sample. The hydrogen evolution of the optimal coating was significantly lower than that of Mg alloy, and the coated sample demonstrated good biomineralization ability and biocompatibility in cell experiments.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Metallurgy & Metallurgical Engineering
Lingchuang Bai, Yahui Wang, Lan Chen, Jun Wang, Jingan Li, Shijie Zhu, Liguo Wang, Shaokang Guan
Summary: A functional coating was constructed to improve the corrosion resistance and biocompatibility of biodegradable magnesium alloy stents. The coating exhibited moderate surface hydrophilicity and enhanced corrosion resistance, and it promoted the adhesion, proliferation, and migration of endothelial cells while alleviating intimal hyperplasia.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Haoran Zheng, Zhen Li, Minfang Chen, Chen You, Jingbo Wang
Summary: The in vitro and in vivo performance of NaMgF3 coating on Mg-3Zn-0.2Ca (MZC) alloy for bone applications was investigated. The NaMgF3 coating effectively reduced the corrosion rate of MZC alloy, enhanced its mechanical support and biocompatibility in bone repair applications.
ADVANCED ENGINEERING MATERIALS
(2023)
Review
Metallurgy & Metallurgical Engineering
Ai-Meng Zhang, Praneesh Lenin, Rong-Chang Zeng, M. Bobby Kannan
Summary: Magnesium is a promising candidate metal for biodegradable implants due to its biodegradation tendency and excellent biocompatibility. However, the high degradation rate and localized degradation in physiological conditions are major challenges for its successful implant applications. Recent research has focused on coating hydroxyapatite (HAp), a biocompatible ceramic material, on magnesium-based materials to improve degradation resistance and biocompatibility.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Biomaterials
Xiaolong Shen, Hao Zhang, Xin Li, Peichuang Li, Yuancong Zhao, Yunbing Wang, Jin Wang
Summary: In this study, a hydrophobic layer was constructed on pure magnesium to improve the biocompatibility and anti-corrosion ability of magnesium-based stent. The results showed that the hydrophobic layer technique is a promising method for surface modification of biomedical magnesium-based stents.
REGENERATIVE BIOMATERIALS
(2022)
Article
Chemistry, Physical
Hamid Reza Bakhsheshi-Rad, Esah Hamzah, Wong See Ying, Mahmood Razzaghi, Safian Sharif, Ahmad Fauzi Ismail, Filippo Berto
Summary: The research focused on enhancing corrosion resistance and antibacterial activity of magnesium using PCL/CS/ZnO composite coating. ZnO embedded in PCL/CS improved corrosion resistance and showed varying effects on cytocompatibility and antibacterial activity depending on the ZnO loading. The findings suggest that PCL/CS coatings with low ZnO content can be a promising candidate for biodegradable Mg-based orthopedic implants.
Review
Metallurgy & Metallurgical Engineering
G. S. Hikku, C. Arthi, R. B. Jeen Robert, K. Jeyasubramanian, R. Murugesan
Summary: Developing biodegradable orthopedic implants is important as it can overcome the toxicity of non-degradable implants and is beneficial for the human body. Magnesium plays a key role in producing biodegradable implants due to its characteristic degradation nature, although it has a higher corrosion rate in the biological environment.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Review
Metallurgy & Metallurgical Engineering
G. S. Hikku, C. Arthi, R. B. Jeen Robert, K. Jeyasubramanian, R. Murugesan
Summary: There is a growing interest in the development of biodegradable orthopedic implants globally, with magnesium (Mg) playing a major role due to its characteristic degradation nature. However, the high corrosion rate and the release of H-2 gas leading to cavity formation are primary downsides of using Mg implants.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Shifeng Wen, Xianglei Liu, Jiahui Ding, Yulai Liu, Ziting Lan, Zimeng Zhang, Guangmeng Chen
Summary: In this study, a hydroxyapatite (HAP) coating was hydrothermally synthesized on the surface of magnesium alloy, resulting in improved morphology structure and corrosion resistance with better control over synthesis conditions. This approach effectively delayed the early corrosion of the magnesium alloy substrate.
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Weiping Lu, Wen Cui, Xiaogang Zhang, Yali Zhang, Shu Yang, Jian Pu, Junyan Li, Zhongmin Jin
Summary: The friction and wear behaviors between cartilage replacement materials and articular cartilage are crucial for the function and performance of the replacements. This study investigated the difference between cross-shear motion and reciprocal linear motion on the frictional and wear behaviors of cartilage, as well as the effect of bearing surface roughness. The results showed that there was no significant difference between the two motion types. The water contact angle of the bearing surface affected the friction and wear behaviors for low roughness implants, while the surface roughness of the material affected the behaviors for high roughness implants. PEEK was found to be a suitable material for osteochondral implants.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
(2023)
Article
Construction & Building Technology
Jianhui Si, Kai Li, Zhaobao Zeng, Zewei Liu, Jiannan Hu
Summary: This study experimentally analyzed the effect of size on the eccentric compression performance of damaged square RC columns reinforced with CFRP. The results showed that CFRP reinforcement could improve the bearing capacity and deformability under small eccentric compression, but the reinforcement effect decreased with increasing size.
ADVANCES IN STRUCTURAL ENGINEERING
(2023)
Article
Neurosciences
Kaicheng Li, Qingze Zeng, Xiao Luo, Shile Qi, Xiaopei Xu, Zening Fu, Luwei Hong, Xiaocao Liu, Zheyu Li, Yanv Fu, Yanxing Chen, Zhirong Liu, Vince D. Calhoun, Peiyu Huang, Minming Zhang
Summary: The study found that concomitant neuropsychiatric symptoms are associated with accelerated Alzheimer's disease progression. Using multimodal brain imaging, a pattern associated with these symptoms was identified and found to be correlated with the development of Alzheimer's disease. The pattern was also found to be associated with multiple cognitive domains and could predict cognitive decline.
HUMAN BRAIN MAPPING
(2023)
Review
Engineering, Environmental
Yuxuan Xie, Jiacheng Bao, Xin Song, Xin Sun, Ping Ning, Chi Wang, Fei Wang, Yixing Ma, Maohong Fan, Kai Li
Summary: This paper provides a comprehensive review of the research on the application of various catalysts in the removal of organic sulfur compounds from reducing industrial off-gases. The factors influencing the catalytic performance of metal catalysts are discussed, and future research prospects are identified. In addition, possible innovations in catalyst design, desulfurization technology, and organic sulfur resource utilization technology are proposed.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Thermodynamics
Hongzhi Li, Yifan Zhang, Wengang Bai, Yu Yang, Kailun Li, Wei Gao, Lei Zhang, Chun Zhang, Shuaishuai Wu, Xuwei Zhang, Yongqiang Qiao, Yujia Zhou, Jiarong Wu
Summary: The development and control strategies of supercritical CO2 (sCO2) power system have been the focus of recent research, especially in terms of wide-range and rapid load regulation for large-scale utilization and commercialization. A pilot multi-megawatts SMART (Supercritical CO2 Modular Advanced Research and Test) fossil-fired power system has been successfully built and operated in China, demonstrating efficient and flexible operation within a wide range of load variations. The control modules implemented in the system effectively regulate key parameters to ensure stable operation and achieve load ramp and reduction rates significantly higher than steam power systems.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Inorganic & Nuclear
Ningning Sun, Yapei Yun, Kaikai Li, Xin Ni, Yao Qin, Xiaofei Yang, Hongting Sheng, Manzhou Zhu
Summary: Regulation of Hybrid Materials of Ministry of Education. Bimetallic nanoclusters with synergistic effect exhibit better stability and activity than monometallic nanoclusters in catalytic applications. The influence of calcination temperature on catalytic performance of AuCu24/AC in homocoupling and heterocoupling of terminal alkynes was investigated by fabricating AuCu24/AC-X (X=0, 200, 300, 500, 800) catalysts. The results showed that the catalytic activity of AuCu24/AC-X exhibited a volcanic trend with the increase of X (heat treatment temperature) and the content of Cu2+ also changed with the increase of X. The AuCu24/AC-200 bimetallic catalyst showed the highest catalytic activity in homocoupling and heterocoupling of terminal alkynes under mild conditions.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Engineering, Mechanical
Kaikai Li, Longsheng Lu, Huaping Chen, Guoxiang Jiang, Huanwen Ding, Min Yu, Yingxi Xie
Summary: This study aimed to improve the cutting performance of surgical electrodes by enhancing their antiadhesion properties. A bionic microstriped structure mimicking a banana leaf was constructed on the electrode surface, resulting in reduced tissue adhesion and thermal injury. The findings suggest that the bionic electrode has potential application in reducing tissue adhesion and thermal injury.
FRONTIERS OF MECHANICAL ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Kaikai Li, Yingxi Xie, Shu Yang, Riina Ritasalo, Jahra Mariam, Min Yu, Junming Bi, Huanwen Ding, Longsheng Lu
Summary: This study presents a coupled electrode with micro/nano hierarchical structures fabricated by depositing HfO2 coatings on bionic microstructures. The synergistic effect of HfO2 coatings and BMs greatly enhances the electrode's hemophobicity and provides excellent antiadhesive properties to blood under high temperatures. The coupled electrode also shows advantages in reducing cutting forces, thermal damage, tissue adhesion, and exhibits antibacterial properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Hao Lei, Mangwei Cui, Wenzheng Li, Kaikai Li, Yan Huang
Summary: It is found that cleaning the contaminants adsorbed on the surface of noble-metal-based catalysts using multiple cyclic voltammetry (MCV) can improve the catalytic activity for methanol oxidation by nearly three times. A universal criterion for screening auxiliary metal elements and a new mechanism for the improved activity obtained by MCV are proposed for the first time. This study provides a facile method for obtaining highly active catalysts in the ethaline electrocatalysis field.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Civil
Wei Zhang, Jianfeng Li, Zhipeng Wang, Kaikai Li, Chunyu Bai, Qinghua Qin
Summary: The influence of asymmetric faces on the dynamic failure of fully clamped CFRP/aluminum foam composite sandwich beams under low-velocity impact was investigated. Three types of geometrically asymmetric sandwich cross-sections with equal area density were designed, and low-velocity impact experiments were conducted to examine the dynamic response and failure modes. The results showed initial failure modes of top face fracture, indentation, and core shear, while final failure modes included top face fracture, core shear, bottom face fracture at one end, and debonding between the core and bottom face. It was found that the asymmetric composite sandwich beams with a thinner top face exhibited better impact resistance.
ENGINEERING STRUCTURES
(2023)
Article
Chemistry, Applied
Zihang Cheng, Nannan Li, Zhining Chen, Kaikai Li, Dongling Qiao, Siming Zhao, Binjia Zhang
Summary: A high-fat diet is a risk factor for many chronic diseases, and ingesting retrograded starch can help manage hyperlipidemia symptoms by reducing triglyceride and LDL cholesterol levels. The intervention of retrograded starch was found to increase the relative abundance of Bacteroides, which produce propionic acid and had a positive correlation with butyric acid that has anti-inflammatory functions. Thus, retrograded starch intervention may regulate the body's health by altering intestinal bacteria.
Article
Nanoscience & Nanotechnology
Shubo Zhang, Kailun Li, Wenjing Zhang, Menghan Ma, Mingshen Li, Jing Xue, Hao Chen, Rong Hu, Wei Liu
Summary: This study presents a new type of iron-based alloy with nano particles, manufactured using selective laser melting, to enhance high-temperature performance. The results show superior mechanical properties compared to other additive manufactured alloys, suggesting the potential for improving structural materials in fusion reactors.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Yin Qin, Bin Cao, Xiao-Ye Zhou, Zhuorui Xiao, Hanxiang Zhou, Zhenyi Zhao, Yibo Weng, Jianshuai Lv, Yang Liu, Yan-Bing He, Feiyu Kang, Kaikai Li, Tong-Yi Zhang
Summary: The orthorhombic (Ru, Mn)2O3 electrocatalyst was successfully synthesized through cation exchange and shows outstanding electrocatalysis performance as OER electrocatalyst in acidic water, with an ultralow overpotential of 168 mV at 10 mA cm-2 and good stability in 40 h of OER.
Article
Agronomy
Chen He, Kaikai Li, Changli Wen, Jinku Li, Pingshan Fan, Yunze Ruan, Lei Meng, Zhongjun Jia
Summary: The purpose of this study was to investigate the differences in physicochemical properties and microbial community composition among different soil utilization types. Natural forest soil, healthy banana garden soil, diseased banana garden soil, and paddy soil were used for the study in tropical areas of Hainan Province. The research findings showed a significant decrease in the abundance and diversity of soil bacteria with the evolution of soil utilization types. The bacterial community structure in natural forest soil was notably distinct from that in healthy banana garden soil and paddy soil.
Article
Chemistry, Physical
Kaikai Li, Yingxi Xie, Biao Tang, Huanwen Ding, Xiaokang Mei, Min Yu, Chunbao Li, Longsheng Lu
Summary: By constructing surface microstructures and improving their hydrophobicity, severe adhesion of biological fluids on surgical electrodes can be effectively reduced. Inspired by purple orchid leaves with self-cleaning properties, the dynamic behavior of water and biological droplets on superhydrophobic microstructured surfaces (SMSs) heated over 100°C was studied. The SMSs with Cassie-Baxter state showed a pseudo-Leidenfrost effect for water droplets, and the dynamic evolution mechanism of plasma droplets on heated surfaces was proposed. The findings contribute to understanding the anti-adhesion mechanism of surgical electrodes at the microscopic level.
SURFACES AND INTERFACES
(2023)
