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Dynamic mechanical behavior of K417G superalloy: development of Johnson-Cook constitutive model and its application in single-grit grinding K417G高温合金动态力学行为:Johnson-Cook本构模型的建立及其在单粒磨削中的应用
IF 7.9 2区 材料科学
Materials & Design Pub Date : 2026-03-01 Epub Date: 2026-01-29 DOI: 10.1016/j.matdes.2026.115576
Ning Qian , Chengxiang Li , Ziyu Liu , Yuting Sun , Yusuf Kaynak , Lama Anggei , Zhengcai Zhao , Yucan Fu
{"title":"Dynamic mechanical behavior of K417G superalloy: development of Johnson-Cook constitutive model and its application in single-grit grinding","authors":"Ning Qian ,&nbsp;Chengxiang Li ,&nbsp;Ziyu Liu ,&nbsp;Yuting Sun ,&nbsp;Yusuf Kaynak ,&nbsp;Lama Anggei ,&nbsp;Zhengcai Zhao ,&nbsp;Yucan Fu","doi":"10.1016/j.matdes.2026.115576","DOIUrl":"10.1016/j.matdes.2026.115576","url":null,"abstract":"<div><div>Precision grinding of K417G superalloy, a key material for hot-end components of aero-engines, is plagued by large grinding forces and excessive heat generation. Clarifying the material removal mechanism is a prerequisite for optimizing the grinding process. Although single-grit grinding is a critical method for revealing this mechanism, it suffers from bottlenecks, such as the difficult acquisition of force or stress fields and poor process visualization. Finite element simulation, an alternative approach, cannot be practically applied because of the lack of dynamic mechanical properties data and a suitable constitutive model for K417G. This study systematically investigates the dynamic mechanical behavior of K417G and develops a Johnson-Cook constitutive model with high fitting accuracy. After embedding this model into single-grit grinding simulations, the study further quantifies the effects of undeformed chip thickness and grinding speed on material removal behavior. The results show that the undeformed chip thickness significantly affects the grinding force, chip morphology, and residual stress. This study not only provides a reliable constitutive basis for the simulation modeling of the precision grinding of K417G but also offers key theoretical support for the accurate optimization of grinding processes for aero-engine hot-end components, which has important engineering application value.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"263 ","pages":"Article 115576"},"PeriodicalIF":7.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrosion–wear synergy in AlxCoCrNiMo high-entropy alloys: Role of B2/σ phase balance AlxCoCrNiMo高熵合金的腐蚀磨损协同作用:B2/σ相平衡的作用
IF 7.9 2区 材料科学
Materials & Design Pub Date : 2026-03-01 Epub Date: 2026-02-05 DOI: 10.1016/j.matdes.2026.115625
Fengbo Li , Conghui Zhang
{"title":"Corrosion–wear synergy in AlxCoCrNiMo high-entropy alloys: Role of B2/σ phase balance","authors":"Fengbo Li ,&nbsp;Conghui Zhang","doi":"10.1016/j.matdes.2026.115625","DOIUrl":"10.1016/j.matdes.2026.115625","url":null,"abstract":"<div><div>High-entropy alloys (HEAs) show great potential for extreme environments due to their multi-element synergy and properties. We studied the CoCrNiMo system, incorporating varying Al amounts to develop HEAs. Using multi-scale computations and experiments, we examined how Al content affects microstructure, mechanical properties, tribological behavior, and corrosion resistance. Our results indicate that increasing Al content promotes the formation of the B2 phase while suppressing the growth of the σ phase. The phase composition evolved from FCC + σ (at x = 0) to B2 + σ (at x ≥ 0.5), ultimately forming a B2-dominated multiphase structure (at x = 2.0). Consequently, the alloy’s hardness first increased and then decreased. The Al0.5 alloy achieves the highest hardness both at room temperature and high temperature, with a hardness value of 936.9 ± 17.56 HV at room temperature and 819 ± 0.5 HV at 650 ℃. However, corrosion resistance steadily decreased with increased Al. This decline occurred because the higher Al content raised the proportion of the Cr/Mo-depleted B2 phase, destabilizing the protective passive film. The Al0.5 alloy exhibited the best synergistic resistance to corrosion-wear due to its optimal balance of good corrosion resistance and high hardness. In contrast, higher Al content diminished the alloy’s overall resistance under complex service conditions by increasing the B2 phase proportion. These findings highlight that an optimal B2/σ phase balance—achieved at intermediate Al content—can significantly enhance corrosion–wear synergy. This work provides practical guidance for the compositional design of HEAs used in corrosive and mechanically demanding environments such as marine and chemical industries.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"263 ","pages":"Article 115625"},"PeriodicalIF":7.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A sponge scaffold with microchannels to accelerate bone repair 带微通道的海绵支架,加速骨修复
IF 7.9 2区 材料科学
Materials & Design Pub Date : 2026-03-01 Epub Date: 2026-01-31 DOI: 10.1016/j.matdes.2026.115598
Lei Luo , Xiaoyu Wu , Ye Zhu , Yurong Chen , Bin Zhu , Yining Gong , Raghvendra Bohara , Dali He , Yazhong Bu , Liang Yan
{"title":"A sponge scaffold with microchannels to accelerate bone repair","authors":"Lei Luo ,&nbsp;Xiaoyu Wu ,&nbsp;Ye Zhu ,&nbsp;Yurong Chen ,&nbsp;Bin Zhu ,&nbsp;Yining Gong ,&nbsp;Raghvendra Bohara ,&nbsp;Dali He ,&nbsp;Yazhong Bu ,&nbsp;Liang Yan","doi":"10.1016/j.matdes.2026.115598","DOIUrl":"10.1016/j.matdes.2026.115598","url":null,"abstract":"<div><div>The field of bone defect repair continues to face numerous challenges. Therefore, the development of effective bone regeneration materials remains urgently needed. This study fabricated a microchannel sponge scaffold (MS) with the assistance of 3D printing. Experimental results showed that MS increased clot porosity and mechanical stability. And MS-treated blood clots significantly enhanced cell migration compared with ordinary clots. In in vitro cell experiments, the MS loaded with blood clots and vascular endothelial growth factor (VEGF) significantly upregulated the expression levels of osteogenesis- and angiogenesis-related genes, promoting both angiogenesis as well as osteogenic differentiation. <em>In vivo</em> hemostasis experiments revealed that the MS significantly reduced blood loss and hemostasis time, when compared with commercially available gelatin hemostatic sponges (C-Sponge). Furthermore, <em>in vivo</em> experiments utilizing a rat cranial defect model indicated that the MS provided substantial support for bone defects and stimulated bone tissue formation. At 8 weeks post-transplantation, the Blood-UMS600-V group had the highest Bone Mineral Density (BMD) and Bone Volume Fraction (BV/TV) with significant differences from other groups. Histological staining revealed accelerated bone repair mechanisms involving increased collagen deposition and enhanced angiogenesis. Conclusively, MS holds clinical potential for treating bone defect bleeding and improving bone healing.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"263 ","pages":"Article 115598"},"PeriodicalIF":7.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multifunctional carbon-veil grid design for impact damage monitoring and tolerance in GFRP and CFRP laminates GFRP和CFRP复合材料冲击损伤监测与容限的多功能碳膜网格设计
IF 7.9 2区 材料科学
Materials & Design Pub Date : 2026-03-01 Epub Date: 2026-02-02 DOI: 10.1016/j.matdes.2026.115608
Ozan Can Zehni , Ali Kandemir
{"title":"Multifunctional carbon-veil grid design for impact damage monitoring and tolerance in GFRP and CFRP laminates","authors":"Ozan Can Zehni ,&nbsp;Ali Kandemir","doi":"10.1016/j.matdes.2026.115608","DOIUrl":"10.1016/j.matdes.2026.115608","url":null,"abstract":"<div><div>This study presents a materials-by-design strategy based on fully embedded carbon-veil grid architectures for high-sensitivity impact damage monitoring in glass- and carbon-fibre-reinforced polymer (GFRP and CFRP) laminates. Integrated as part of the laminate, the architecture exploits high-frequency resistance monitoring to capture transient electrical responses during impact, enabling detection of damage initiation at very low energy levels. In GFRP laminates, lightweight 10 g/m<sup>2</sup> carbon-veil grids produced repeatable and spatially resolved resistance responses under low-velocity impacts between 5 and 20 J. Distinct transient resistance signatures were detected even at 5 J, revealing sensitivity to early-stage matrix cracking beyond conventional post-impact measurements. With increasing impact energy, transient and permanent resistance changes increased markedly, reaching very large amplitudes at 20 J due to extensive delamination and grid disruption. In CFRP laminates, electrically insulated 2 g/m<sup>2</sup> carbon-veil grids combined with thermoplastic veils enabled detection of subsurface and through-thickness damage at energies as low as 3 J, even in the absence of visible ultrasonic indications. Joule-heating-assisted thermal imaging provided direct visualisation of electrically damaged regions, while short-beam shear tests showed an approximately 11 % enhancement in interlaminar shear strength. The architecture enables early impact damage detection, severity discrimination, and mechanical enhancement in composite laminates.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"263 ","pages":"Article 115608"},"PeriodicalIF":7.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modular metamaterials with deep learning–enabled customizable stress–strain responses 具有深度学习功能的可定制应力应变响应的模块化超材料
IF 7.9 2区 材料科学
Materials & Design Pub Date : 2026-03-01 Epub Date: 2026-01-30 DOI: 10.1016/j.matdes.2026.115584
Xiaofeng Guo , Miaomiao He , Ikumu Watanabe , Jiaxin Zhou , Takayuki Yamada , Yong Yi , Xiaoyang Zheng
{"title":"Modular metamaterials with deep learning–enabled customizable stress–strain responses","authors":"Xiaofeng Guo ,&nbsp;Miaomiao He ,&nbsp;Ikumu Watanabe ,&nbsp;Jiaxin Zhou ,&nbsp;Takayuki Yamada ,&nbsp;Yong Yi ,&nbsp;Xiaoyang Zheng","doi":"10.1016/j.matdes.2026.115584","DOIUrl":"10.1016/j.matdes.2026.115584","url":null,"abstract":"<div><div>Modular mechanical metamaterials offer unique opportunities for programmable and reconfigurable functionality through simple geometric rearrangements. Inspired by the modularity of Lego blocks, we propose a new class of modular metamaterials composed of three standardized modules—linear, yielding-like, and snap-through buckling elements—that can be assembled into two- and three-dimensional grids to realize diverse nonlinear stress–strain responses. To accelerate design and optimization, we integrate deep learning (DL) with the metamaterial design process. A convolutional neural network-based predictor rapidly estimates the stress–strain curves of given modular configurations, achieving a prediction accuracy of <span><math><msup><mi>R</mi><mn>2</mn></msup><mo>&gt;</mo><mn>0.999</mn></math></span>. Furthermore, a conditional variational autoencoder-based inverse designer enables the automatic generation of modular configurations that match target stress–strain curves, demonstrating high fidelity (<span><math><msup><mi>R</mi><mn>2</mn></msup><mo>≈</mo><mn>0.97</mn></math></span>). The proposed DL framework allows rapid, scalable, and reprogrammable design of nonlinear mechanical responses without exhaustive simulations or manual tuning. This study establishes a universal, data-driven strategy for the inverse design of modular metamaterials, paving the way toward intelligent, reconfigurable material systems for applications in soft robotics and adaptive structures.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"263 ","pages":"Article 115584"},"PeriodicalIF":7.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metabolically targeted NIR-II theranostic nanoplatform enabling efficient synergistic phototherapy and chemotherapy for Alveolar echinococcosis 代谢靶向NIR-II治疗纳米平台,为肺泡棘球蚴病提供有效的协同光疗和化疗
IF 7.9 2区 材料科学
Materials & Design Pub Date : 2026-03-01 Epub Date: 2026-01-31 DOI: 10.1016/j.matdes.2026.115597
Zenghao Zhao , Bingshuai Zhou , Jun Li , Meiling Wang , Chi Zhang , Jiabao Xiong , Zhong Du , Wenbao Zhang , Biao Dong , Nuernisha Alifu
{"title":"Metabolically targeted NIR-II theranostic nanoplatform enabling efficient synergistic phototherapy and chemotherapy for Alveolar echinococcosis","authors":"Zenghao Zhao ,&nbsp;Bingshuai Zhou ,&nbsp;Jun Li ,&nbsp;Meiling Wang ,&nbsp;Chi Zhang ,&nbsp;Jiabao Xiong ,&nbsp;Zhong Du ,&nbsp;Wenbao Zhang ,&nbsp;Biao Dong ,&nbsp;Nuernisha Alifu","doi":"10.1016/j.matdes.2026.115597","DOIUrl":"10.1016/j.matdes.2026.115597","url":null,"abstract":"<div><div>Alveolar echinococcosis (AE) is a malignant tumor-like parasitic disease whose treatment is limited by poor lesion accessibility and insufficient chemotherapeutic efficacy. Herein, a metabolic-targeted NIR-II theranostic nanoplatform was rationally designed to integrate photothermal therapy (PTT), photodynamic therapy (PDT), and chemotherapy for AE treatment. The Au@Si@ABZSO/ICG@P nanoparticles (ASAIP NPs) feature a gold nanorod core for efficient photothermal conversion, a mesoporous silica layer for co-loading albendazole sulfoxide (ABZSO) and indocyanine green (ICG), and a poly (lactic-co-glycolic acid) shell enabling preferential hepatic lesion accumulation via metabolic affinity. NIR-II fluorescence imaging allows accurate lesion visualization and guides spatiotemporally controlled therapy. Under photothermal activation, on-demand ABZSO release is achieved, while ICG simultaneously mediates PTT and PDT, producing enhanced synergistic antiparasitic effects. This work demonstrates a metabolically targeted, multimodal nanoplatform that improves therapeutic precision and efficacy against AE.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"263 ","pages":"Article 115597"},"PeriodicalIF":7.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent advances in reinforced honeycomb mechanical metamaterials: a review 增强蜂窝机械超材料研究进展综述
IF 7.9 2区 材料科学
Materials & Design Pub Date : 2026-03-01 Epub Date: 2026-02-03 DOI: 10.1016/j.matdes.2026.115593
Zhenzhen Cai, Xiaolin Deng
{"title":"Recent advances in reinforced honeycomb mechanical metamaterials: a review","authors":"Zhenzhen Cai,&nbsp;Xiaolin Deng","doi":"10.1016/j.matdes.2026.115593","DOIUrl":"10.1016/j.matdes.2026.115593","url":null,"abstract":"<div><div>Honeycomb structures, as a class of ultra-lightweight mechanical metamaterials, achieve their exceptional mechanical performance predominantly through the carefully engineered geometry of their cellular architecture, rather than solely through the intrinsic properties of the constituent materials. While the intrinsic mechanical properties of the base material—such as stiffness and strength—also influence the overall response, their contribution is generally secondary to that of the structural configuration. This review systematically summarizes the major advancements in honeycomb structure design, with a focus on reinforced two-dimensional geometric configurations aimed at developing new cellular architectures with diversified and optimized mechanical properties. The paper first revisits the classical honeycomb topologies, then discusses the crashworthiness of traditional concave hexagonal honeycombs and their common improvement strategies. Furthermore, a clear classification framework is established according to design scale. Reinforced macroscopic designs are categorized into hierarchical, graded, curved, foam-filled, hybrid, and symmetric/asymmetric configurations. The review also explores the influence mechanisms of critical loading parameters and geometric characteristics, along with a summary of mainstream manufacturing techniques and their practical applications. Finally, the paper highlights key design trends and future challenges in improving the mechanical performance of honeycomb structures, providing insights into advancing collision safety and structural resilience.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"263 ","pages":"Article 115593"},"PeriodicalIF":7.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Topology optimization design of titanium alloy outer cylinder lug structure for landing gear 起落架钛合金外筒耳结构拓扑优化设计
IF 7.9 2区 材料科学
Materials & Design Pub Date : 2026-03-01 Epub Date: 2026-01-26 DOI: 10.1016/j.matdes.2026.115562
Jiale Shi , Zhipeng Li , Zhen Zhuang , Fu Li , Lingbo Zhang , Quhao Li , Yunfeng Luo
{"title":"Topology optimization design of titanium alloy outer cylinder lug structure for landing gear","authors":"Jiale Shi ,&nbsp;Zhipeng Li ,&nbsp;Zhen Zhuang ,&nbsp;Fu Li ,&nbsp;Lingbo Zhang ,&nbsp;Quhao Li ,&nbsp;Yunfeng Luo","doi":"10.1016/j.matdes.2026.115562","DOIUrl":"10.1016/j.matdes.2026.115562","url":null,"abstract":"<div><div>While A-100 ultra-high-strength steel is widely employed in landing gear, its mass poses a constraint for advancing aircraft performance. To overcome this, the present research introduces two key innovations: the substitution with a lightweight titanium alloy and the development of an integrated topology and shape optimization framework, specifically applied to the outer cylinder lug. This approach yielded an optimal design that reduces mass by 28.4% and confines the maximum stress to 860.6 MPa, safely under the 875 MPa allowable threshold. A comprehensive experimental validation, involving full-scale static, fatigue, and post-fatigue residual strength tests, was conducted following a complete design-to-test workflow, confirming the design’s practical robustness. The findings underscore that the integrated methodology achieves substantial mass savings while ensuring structural integrity and durability, providing a critical reference for engineering future landing gear components.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"263 ","pages":"Article 115562"},"PeriodicalIF":7.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimized low-temperature heat treatment to enhance the mechanical properties of ceramic-reinforced TWIP steel matrix composites 优化低温热处理工艺,提高陶瓷增强TWIP钢基复合材料的力学性能
IF 7.9 2区 材料科学
Materials & Design Pub Date : 2026-03-01 Epub Date: 2026-01-27 DOI: 10.1016/j.matdes.2026.115566
Guojin Sun , Qi Wang
{"title":"Optimized low-temperature heat treatment to enhance the mechanical properties of ceramic-reinforced TWIP steel matrix composites","authors":"Guojin Sun ,&nbsp;Qi Wang","doi":"10.1016/j.matdes.2026.115566","DOIUrl":"10.1016/j.matdes.2026.115566","url":null,"abstract":"<div><div>This work explores the use of an improved low-temperature heat treatment procedure to improve the mechanical properties of large-sized ceramic-reinforced TWIP (Twinning-Induced Plasticity) steel matrix composites. The results obtained demonstrate that the ceramic-reinforced TWIP composite’s strength and ductility are significantly improved with low-temperature heat treatment, especially at 400 °C. The ductility, which is determined by the displacement at maximum force, improved by more than 40%, while the bending strength increased by more than 200 MPa to reach about 1000 MPa. The mechanical performance improvements in ceramic-reinforced TWIP steel matrix composites can be primarily attributed to the optimization of the TWIP steel matrix through precise heat treatment. The enhancement is the result of the synergistic effects of twin-induced plasticity (TWIP) and precipitation strengthening mechanisms, which have been carefully engineered through the controlled thermal processes. Precipitate clustering at grain boundaries occasioned an apparent change in its mechanical properties as the heat treatment temperature rose over 400 °C, compromising both strength and ductility. The findings offer significant guidance for facilitating the development of high-performance TWIP steel matrix composites in demanding engineering applications through shedding illumination on the relationship between ceramic reinforcement, the application of heat, and microstructural evolution.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"263 ","pages":"Article 115566"},"PeriodicalIF":7.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermosensitive chitosan hydrogel encapsulating exosomes inhibits NLRP3 activation to promote diabetic foot ulcer healing 包封外泌体的热敏壳聚糖水凝胶抑制NLRP3激活促进糖尿病足溃疡愈合
IF 7.9 2区 材料科学
Materials & Design Pub Date : 2026-03-01 Epub Date: 2026-01-26 DOI: 10.1016/j.matdes.2026.115561
Xinnan Song , Chenglin Sun , Fei Meng , Xiaohong Zhang , Lixin Yang
{"title":"Thermosensitive chitosan hydrogel encapsulating exosomes inhibits NLRP3 activation to promote diabetic foot ulcer healing","authors":"Xinnan Song ,&nbsp;Chenglin Sun ,&nbsp;Fei Meng ,&nbsp;Xiaohong Zhang ,&nbsp;Lixin Yang","doi":"10.1016/j.matdes.2026.115561","DOIUrl":"10.1016/j.matdes.2026.115561","url":null,"abstract":"<div><div>The study investigated the therapeutic potential of thermosensitive chitosan hydrogels encapsulating adipose-derived mesenchymal stem cell-derived exosomes (ADMSCs-Exos) for enhancing wound healing in diabetic foot ulcers (DFUs). Hydrogels prepared at varying concentrations were characterized for gelation behavior and structural properties, and Exos were isolated and validated through biomarker analysis. The encapsulated Exos significantly inhibited NLRP3 inflammasome formation and activation <em>in vitro</em>, reducing the expression of NLR family pyrin domain-containing 3 (NLRP3), caspase-1, and interleukin (IL)-1β. Exos also promoted macrophage polarization toward the M2 phenotype, thereby supporting tissue repair. <em>In vivo</em>, the Hydrogel-Exo treatment group demonstrated a 90% wound healing efficiency, demonstrating a statistically significant improvement compared with the control group in DFU models (<em>P</em> &lt; 0.0001). Mechanistic analysis revealed that Exos hindered the interaction between NLRP3, caspase-1, and apoptosis-associated speck-like protein containing a CARD (ASC), which was further confirmed by gene knockouts. This study innovatively combined a thermosensitive chitosan hydrogel with ADMSC-derived exosomes for the treatment of DFU, significantly accelerating wound healing by inhibiting the NLRP3 inflammasome pathway and promoting M2 macrophage polarization. These findings provide new experimental evidence and a potential therapeutic strategy for the clinical application of exosomes in chronic inflammatory diseases.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"263 ","pages":"Article 115561"},"PeriodicalIF":7.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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