{"title":"Laser Induced Biomimetic Fish Scale Arrays Composite With Superhydrophobic Nanoscale SiO2 Particles for Drag Reduction","authors":"Dengke Chen, Zheng Shangguan, Bowen Zhang, Chenggang Sun, Kaiteng Zhang, Haifeng Zhang, Wenting Zhou, Xianxian Cui, Xiaolin Liu, Huawei Chen","doi":"10.1049/bsb2.70011","DOIUrl":"10.1049/bsb2.70011","url":null,"abstract":"<p>Reducing surface friction resistance (SFR) is beneficial for the performance of high-speed marine equipment surfaces. To reduce SFR, a biomimetic surface was developed through a collaborative multi-process strategy involving a combination of laser ablation and spraying techniques. Initially, biomimetic fish scale (BFS) arrays with five different spacing (<i>s</i>) values were fabricated on an aluminium (Al) substrate using laser ablation, which was then replicated with polydimethylsiloxane (PDMS). Subsequently, a mixture of superhydrophobic nanoscale SiO<sub>2</sub> particles (SH-SiO<sub>2</sub>), PDMS and n-hexane solution was uniformly sprayed onto the BFS surface to enhance its hydrophobic properties. The morphology of these biomimetic surfaces was characterised using a scanning electron microscope (SEM) and ultra-depth field microscope. The drag reduction (<i>DR</i>) performance of the biomimetic surfaces was evaluated within a Reynolds (<i>Re</i>) number range of 4.2 × 10<sup>4</sup>–2.2 × 10<sup>5</sup> in a circulating water tunnel. The results indicated that a drag reduction rate of 11.82% was achieved with the modified BFS at <i>s</i> = 300 μm and <i>Re</i> = 1.7 × 10<sup>5</sup>. Additionally, the drag reduction mechanism of the modified BFS surface was analysed using the computational fluid dynamics (CFD) method. The excellent drag reduction performance was attributed to the combined effects of the ‘rolling bearing’ caused by streamwise vortices, high-low velocity streaks and the velocity slip effect caused by hydrophobic properties at the interface. These findings offer a novel approach for creating multi-effect coupled drag reduction surfaces.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145129263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pengfei Tang, Kun Yang, Chaoming Xie, Hongping Zhang, Xiong Lu, Qingyuan Wang
{"title":"Evolution Mechanism of the Structure and Performance of Silver-Based Printed Circuits Under Electromechanical Coupling Loads","authors":"Pengfei Tang, Kun Yang, Chaoming Xie, Hongping Zhang, Xiong Lu, Qingyuan Wang","doi":"10.1049/bsb2.70012","DOIUrl":"10.1049/bsb2.70012","url":null,"abstract":"<p>Silver-based printed circuits have demonstrated significant potential in the field of flexible electronics, particularly for applications such as wearable devices, owing to their high conductivity, low cost, and ease of mass production. However, their structural and performance degradation under continuous mechanical and electrical loads during service poses a major challenge to achieving long-term stable functionality. Herein, this study investigates the performance and microstructural evolution of silver-based printed circuits under electromechanical coupling loads and unveils the underlying material degradation mechanisms. Resistance change curves reveal that, under identical bending loads, lower current density (208.3 A/cm<sup>2</sup>) accelerates circuit degradation more significantly than higher current density (1164.7 A/cm<sup>2</sup>). By analysing the thermal characteristics, conductive phase structure, and conductive network of printed circuits under mechanical loading, electric field stimulation, and electromechanical coupling, it is evident that heat plays a critical role in determining resistance changes in silver-based printed circuits. At lower temperatures, heat-induced oxidation of nanosilver to nonconductive silver oxide emerges as the primary driver of resistance increase. Conversely, at higher temperatures, heat-induced sintering of silver forms new conductive pathways that offset the resistance increase caused by the oxidation of silver nanoparticles. These findings not only elucidate the fatigue degradation mechanisms of silver-based printed circuits but also offer theoretical guidance for the development of high-performance silver-based printed circuits.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jing Tan, Zhiqiang Bai, Na Wu, Liangliang Wang, Yunfeng Bai
{"title":"Biopanning and Design of RGD-Modified Phage Displayed Titanium-Binding Peptides With Biofunctionality and Binding Stability","authors":"Jing Tan, Zhiqiang Bai, Na Wu, Liangliang Wang, Yunfeng Bai","doi":"10.1049/bsb2.70010","DOIUrl":"10.1049/bsb2.70010","url":null,"abstract":"<p>The development of multifunctional surfaces for titanium implants has become a hot research area due to their potential to elicit specific responses from various cells and infection agents. Solid-binding peptides are increasingly exhibiting their distinct advantages as a novel noncovalent surface modification method for titanium implants. In this study, titanium-binding peptide (TiBP2), a titanium-binding peptide with higher affinity for acid–alkali treatment titanium (AA) substrate, was screened using the phage display technique. The excellent affinity and stable binding of TiBP2 to the AA substrate was due to the interaction of its COO<sup>–</sup> group with Ti<sup>4+</sup> on the AA substrate. Linker-conjugated RGD–TiBP (TPR/TGR) was constructed, and its binding capacity and biofunctionality were analysed. RGD-TiBP exhibited high affinity and stable binding properties with AA substrate, as well as excellent biocompatibility (no toxic effect on L929 cells) and remarkable H<sub>2</sub>O<sub>2</sub> scavenging ability. Notably, 40 μg/mL of TPR effectively promoted the polarisation shift of macrophages from a pro-inflammatory phenotype (M1) to an anti-inflammatory phenotype (M2). The present results indicated that TPR-based biofunctional modification of titanium implants can improve interfacial stability and immunomodulatory activity, making it a promising technique for application.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Effect of Posterior Cruciate Ligament Reconstruction Operations on Contact Mechanics of the Tibiofemoral Joint","authors":"Xin Jin, Peilin Wang, Dangdang Wang, Hui Ma, Zhihao Tang, Junyan Li","doi":"10.1049/bsb2.70007","DOIUrl":"10.1049/bsb2.70007","url":null,"abstract":"<p>Patients undergoing posterior cruciate ligament (PCL) reconstruction may experience changes in the mechanical environment of cartilage and meniscus; however, limited information is available regarding the contact mechanism of the tibiofemoral joint following different PCL reconstruction techniques. In this study, finite element (FE) models of the PCL-reconstructed tibiofemoral joint—including the femur, tibia, fibula, menisci, cartilage and ligaments (ACL, PCL, MCL and LCL)—were developed with contact interactions among these tissues considered. Joint angles and axial forces based on the ISO 14243-3 were used as inputs. Using these FE models, the effect of different PCL reconstruction techniques on contact pressure, stresses of the cartilages and menisci and tibiofemoral kinematics was evaluated. Compared to the intact model, PCL-reconstructed models exhibited reduced anterior translation during swing phase and reduced external rotation during stance phase. The external rotation of the TA model was greater than that of the intact model, TI model and TL model during swing phase. The medial meniscus of the PCL-reconstructed models experienced lower contact pressure and stresses compared to that in the intact model. The altered kinematics and contact mechanics of the PCL-reconstructed models demonstrate that the typical PCL reconstruction techniques should be improved or adjusted to better restore the natural biomechanical function of the joint.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yongjie Luo, Lu Yang, Chubao Liu, Liwei Yan, Chaoming Xie
{"title":"Functional Hydrogels for the Treatment of Periodontitis","authors":"Yongjie Luo, Lu Yang, Chubao Liu, Liwei Yan, Chaoming Xie","doi":"10.1049/bsb2.70009","DOIUrl":"10.1049/bsb2.70009","url":null,"abstract":"<p>Periodontitis is a common and serious oral health problem. It not only damages the health of periodontal tissues but also has potential impacts on the whole body. Existing treatment methods, such as mechanical debridement and antibiotic treatment, have obvious limitations. Functional hydrogels can be used as drug carriers to deliver medications for treating periodontitis. Meanwhile, depending on different designs, hydrogels can achieve functions such as antioxidant, antibacterial, anti-inflammatory effects and osteoinduction, making them a promising material for periodontitis treatment. In this review, we first elaborate on the preparation methods of hydrogels for periodontitis, as well as the pathological characteristics and hazards of periodontitis. Then, we introduce the applications of hydrogels in antibacterial, anti-inflammatory, antioxidant and osteoinduction aspects related to periodontitis. Finally, we discuss the current challenges and future research directions in this field.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Superlubricity of Double-Network Hydrogels Modified With Tween 80 and Hydrogenated Soybean Phosphatidylcholine","authors":"Haoyu Wang, Jian Song, Yuhong Liu","doi":"10.1049/bsb2.70008","DOIUrl":"10.1049/bsb2.70008","url":null,"abstract":"<p>Artificial joint cartilage materials are central to arthroplasty for the treatment of osteoarthritis. Hydrogels are highly promising materials for fabricating artificial cartilage owing to their excellent biocompatibility and lubricity. Inspired by natural articular cartilage, in this study, we designed a modification strategy to enhance the lubricity of double-network (DN) hydrogels. Specifically, two lubricating substances, nonionic surfactant Tween 80 and hydrogenated soybean phosphatidylcholine (HSPC), were incorporated into a DN hydrogel. Lubricity-enhanced DN hydrogel exhibited superlubricity through the synergistic effect of Tween 80 and HSPC, with a low coefficient of friction of 0.008, which remained stable after 6 h of continuous tribological testing. In addition, the mechanical properties of lubricity-enhanced DN hydrogel were greater than those of unmodified DN hydrogel, with a 29% increase in fracture strain and a 1.7-fold increase in toughness. Tween 80 micelles reinforced the physically cross-linked network through hydrogen bonding with the DN hydrogel, whereas HSPC vesicles encapsulated in the polymer network served as reinforcement nodes to enhance the chemically cross-linked network. As a result, lubricity-enhanced DN hydrogel exhibited both excellent lubricity and mechanical properties. This study demonstrates an innovative way to design hydrogels exhibiting both superlubricity and excellent mechanical properties, broadening the applications of DN hydrogels in the field of artificial joint cartilage.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Thermal Nitridation Deoxygenation and Biotribological Properties of Zr2.5Nb","authors":"Liuwang Zhang, Jiangchuan Xu, Hao Liu, Yong Luo","doi":"10.1049/bsb2.70005","DOIUrl":"10.1049/bsb2.70005","url":null,"abstract":"<p>Zirconium and its alloys are considered to be materials for artificial joints because of their excellent biocompatibility. In this study, we proposed the introduction of high-purity iron beads as external deoxidisers to inhibit the oxidation of Zr2.5Nb during thermal nitriding and investigated the biotribological properties of this alloy after deoxidation. Zr2.5Nb samples were subjected to deoxidation thermal nitriding at 900°C and 1000°C for 4 h. The main phase on the surface was ZrN, which was accompanied by a minor phase of unsaturated zirconium oxides (ZrO<sub>0.33</sub>, ZrO<sub>0.27</sub>). The thickness of the ZrN ceramic layer increased from 5.26 ± 0.37 μm to 7.78 ± 0.19 μm. During electrochemical friction–corrosion test, the open-circuit potential (OCP) and coefficient of friction (COF) values for the sample prepared at 900°C were −809.8 mV and 0.3015, and those for the sample prepared at 1000°C were −682.3 mV and 0.3168. The samples that underwent deoxidation thermal nitriding exhibited better friction–corrosion resistance and a lower friction coefficient than the original sample. Additionally, the volume wear loss was reduced by 50.53% and 62.27%, also demonstrating the superior biotribological properties achieved through deoxidation thermal nitriding.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143857136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Recognition of Fine Textures Using Friction and EEG Methods","authors":"Shousheng Zhang, Wei Tang","doi":"10.1049/bsb2.70006","DOIUrl":"10.1049/bsb2.70006","url":null,"abstract":"<p>Tactile perception is essential for humans to recognise objects. This study systematically investigated the tribological behaviour of the finger and physiological response of the brain related to the width recognition of tactile perception using subjective evaluation, friction and electroencephalography methods. The results show that the texture feeling, recognition accuracy of the texture and proportion of deformation friction increased with the texture width. The average width recognition threshold of the fine texture was 45.4 μm. The load index, maximum amplitude of the vibration signal, entropy, longest vertical line and P300 amplitude were positively correlated with the texture width. P300 latency was negatively correlated with the texture width. When the texture width exceeded the width recognition thresholds of tactile perception, the main frequency of the vibration signals increased to the optimal perceptual range of the Pacinian corpuscle. The nonlinear features of the vibration signal increased, and the vibration system transitioned from a homogenous state to a disrupted state. Moreover, the activation intensity and area of the brain and the speed of tactile recognition increased. The study demonstrated that the mechanical stimuli of friction and vibration generated in the touching of fine textures having various widths affected the subjective evaluation and brain response.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhangyue Qin, Xiaogang Zhang, Yali Zhang, Yong Luo, Zhongmin Jin
{"title":"Friction and Wear Characteristics of Micro-Arc Oxidation Coating on Ti6Al4V Alloy—A Review","authors":"Zhangyue Qin, Xiaogang Zhang, Yali Zhang, Yong Luo, Zhongmin Jin","doi":"10.1049/bsb2.70000","DOIUrl":"10.1049/bsb2.70000","url":null,"abstract":"<p>Ti6Al4V alloy is widely used in artificial joints, artificial bones, and dental implants due to its elastic modulus similar to that of bone, good biocompatibility and non-cytotoxicity, low density, and excellent fatigue resistance. However, its utility is constrained by the low surface hardness and inadequate wear resistance. Micro-arc oxidation (MAO) technology emerges as a surface modification method characterised by a straightforward process and superior processing efficacy, making it particularly favoured in enhancing the wear resistance of Ti6Al4V. This paper commenced by elucidating the fundamental principles of micro-arc oxidation. Subsequently, it examined the impacts of crucial parameters such as electrolyte type, concentration, processing voltage, current, time, and electrolyte additives on the friction and wear properties of Ti6Al4V alloy MAO coatings, proposing three mechanisms for optimising wear resistance. The primary strategies for augmenting the microhardness and wear resistance of Ti6Al4V alloy MAO coatings involved pore reduction even sealing, lubrication enhancement, and hard compound generation. Following this, the article synthesised the friction and wear attributes of MAO coatings in conjunction with diverse modification techniques, alongside a review of fretting wear characteristics of Ti6Al4V alloy MAO coatings. Lastly, conclusions and prospects were presented to furnish a foundation for future exploration into the wear resistance of Ti6Al4V alloy MAO coatings in scholarly endeavours.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tribological Properties of Ti-Based Nanofiber-CS Composite Flexible Coatings","authors":"Zhenyu Yang, Weili Jiang, Hui Yan, Jingkang Zhang, Jinbang Li, Yuan Jin, Guangyong Li, Jianke Du, Haitao Fan, Licheng Hua","doi":"10.1049/bsb2.70001","DOIUrl":"10.1049/bsb2.70001","url":null,"abstract":"<p>The development of metal implants as permanent replacements for hard tissue involves careful consideration of both interfacial bone integration for load-bearing support and interfacial energy dissipation to prevent bone resorption due to excess load. Currently, most implants are typically limited to excelling in only one of these functions. A promising approach to achieving a synergistic effect of interfacial bone integration and energy dissipation is the design of a nanofiber-chitosan (nanofiber-CS) composite flexible coating on titanium alloy surfaces. However, the tribological properties of this flexible coating remain uncertain. In this study, the authors evaluated the tribological properties of pure titanium substrates and the nanofiber-cs composite flexible coating in both dry and wet environments. The results demonstrated that while the nanofiber-cs composite flexible coating reduced surface wear in dry conditions, it increased surface wear in wet environments. This indicates that there is potential for improvement in the tribological characteristics of the nanofiber-cs composite flexible coating, particularly in wet conditions. This research offers theoretical and technical insights into the design of flexible coatings for implant surfaces from a tribological standpoint.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}