Advanced Functional Materials最新文献_第2页

Interfacial Stability Engineering of Proton Exchange Membrane Water Electrolyzer Anodes 质子交换膜水电解槽阳极的界面稳定性工程

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2026-11-10 DOI: 10.1002/adfm.79548

Ning Yu, Qianxi Lv, Weijia Zhou, Yongming Chai, Bin Dong

{"title":"Interfacial Stability Engineering of Proton Exchange Membrane Water Electrolyzer Anodes","authors":"Ning Yu, Qianxi Lv, Weijia Zhou, Yongming Chai, Bin Dong","doi":"10.1002/adfm.79548","DOIUrl":"https://doi.org/10.1002/adfm.79548","url":null,"abstract":"Proton exchange membrane water electrolysis (PEMWE) is central to renewable hydrogen production, yet anode durability remains difficult to predict from half‐cell catalyst metrics alone. In membrane electrode assemblies (MEAs), acidic oxygen evolution reaction (OER) catalysts must remain active while staying coupled to electron, proton, water and oxygen transport networks. This Review frames PEMWE anode degradation as a multilevel interfacial stability problem. It first defines the near‐surface stability window of Ir/Ru active sites through valence evolution, hydroxylation, lattice‐oxygen participation, reconstruction and metal dissolution. It then shows how this window is reshaped in MEAs by catalyst‐layer percolation, ionomer distribution, pore architecture, porous transport layer (PTL)/catalyst‐layer contact, membrane contamination, metal migration and dynamic operating stresses. Layered diagnostic strategies are summarized to trace macroscopic performance decay back to specific interfacial instability pathways. Future directions are discussed in terms of standardized evaluation, realistic operating environments and data‐driven materials‐interface‐device optimization. This interfacial framework provides a basis for designing durable, non‐noble‐metal PEMWE anodes for practical renewable hydrogen production.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"14 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Six‐Electron‐Storage Polynuclear Quinoxaline Derivatives with Multiple S ‐Propanoic Acid Side‐Groups for High‐Capacity Aqueous Redox Flow Batteries 具有多个S -丙酸侧基的六电子存储多核喹啉衍生物用于高容量水氧化还原液流电池

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2026-11-10 DOI: 10.1002/adfm.79601

Guochun Ding, Zhihu You, Qianchuan Yu, Tianyu Shen, Zuoao Wu, Pengbo Zhang, Yuzhu Liu, Sheng Wen, Zuoxiu Tie, Yichao Yan, Lianbo Ma, Zhong Jin

{"title":"Six‐Electron‐Storage Polynuclear Quinoxaline Derivatives with Multiple S ‐Propanoic Acid Side‐Groups for High‐Capacity Aqueous Redox Flow Batteries","authors":"Guochun Ding, Zhihu You, Qianchuan Yu, Tianyu Shen, Zuoao Wu, Pengbo Zhang, Yuzhu Liu, Sheng Wen, Zuoxiu Tie, Yichao Yan, Lianbo Ma, Zhong Jin","doi":"10.1002/adfm.79601","DOIUrl":"https://doi.org/10.1002/adfm.79601","url":null,"abstract":"Aqueous organic redox flow batteries are promising for constructing large‐scale energy storage systems with inherent safety and eco‐friendliness, but restricted by limited capacity and cyclability. Herein, we design and synthesize two types of six‐electron‐storage triquinoxalinylene derivatives functionalized with six or three S ‐propionic acid side groups, namely HATN‐HSPA or HATN‐TSPA, both demonstrating a reversible three‐step six‐electron storage capability. The extended π ‐conjugation structure of triquinoxalinylene redox core and rational modification of S ‐propionic acid groups bring them high electrochemical reversibility and stability. The strong solubilizing effect of hexa‐substituted S ‐propanoic acid groups rendered HATN‐HSPA a maximum solubility of 1.26 m (i.e., a charge storage concentration of 7.56 m ) and a theoretical capacity (202.62 Ah L −1 ), which are over three times those of traditional organic active molecules with single‐ or two‐electron storage processes. The flow batteries grounded in nearly saturated HATN‐HSPA anolyte achieved a record‐breaking capacity of 150 Ah L −1 . The flow batteries grounded in 0.5 m HATN‐HSPA anolyte also released high‐capacity retention of 98.4% after 600 cycles (or 60 days), with a capacity decrement of 0.0027% cycle −1 (or 0.027% day −1 ). This work presents a multi‐electron molecular engineering methodology for developing high‐storage and durable multi‐electron‐storage organic species for scalable and sustainable grid‐scale energy storage.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"14 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Trap‐Mediated Photonic Synapses Based on Cs 2 AgBiBr 6 /ZnO x Heterojunctions for Audiovisual Physical Reservoir Computing 基于c2agbibr6 /ZnO x异质结的阱介导光子突触用于视听物理储层计算

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2026-11-10 DOI: 10.1002/adfm.79538

Kaikai Gao, Zelin Cao, Mengna Wang, Bo Yang, Zhongqiang Wang, Songling Wang, Bai Sun, Jinyou Shao

{"title":"Trap‐Mediated Photonic Synapses Based on Cs 2 AgBiBr 6 /ZnO x Heterojunctions for Audiovisual Physical Reservoir Computing","authors":"Kaikai Gao, Zelin Cao, Mengna Wang, Bo Yang, Zhongqiang Wang, Songling Wang, Bai Sun, Jinyou Shao","doi":"10.1002/adfm.79538","DOIUrl":"https://doi.org/10.1002/adfm.79538","url":null,"abstract":"Emulating biological sensory processing in hardware requires synaptic devices with tunable dynamics and multimodal integration capability. However, heterogeneous physical signals are difficult to encode uniformly in a single synaptic device. Herein, we construct an optically programmable photonic synapse (CZH‐PS) based on Cs 2 AgBiBr 6 /ZnO x (defect‐type) heterostructure, where abundant oxygen vacancy (Ov) deep traps in ZnO x dominate the synaptic plasticity. Photoexcited electrons injected from the perovskite into ZnO x are stored in Ov trap states and thermally released, producing a persistent photocurrent whose decay kinetics are optically tunable. This mechanism underpins a rich repertoire of synaptic behaviors, including short‐term/long‐term memory (STM/LTM), Ebbinghaus forgetting, and the habituation/sensitization of the Aplysia gill‐withdrawal reflex under dual‐wavelength programming. Moreover, the nonlinear, history‐dependent excitatory postsynaptic current (EPSC) serves as a physical reservoir for temporal information processing. With 4‐bit optical pulse coding, a reservoir computing system is constructed that achieves recognition accuracies of 91.7% and 95.0% for letter and audio classification tasks, respectively. These results establish trap‐mediated photonic synapses as a versatile hardware platform for bimodal bio‐inspired computing.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"12 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Highly Efficient and Stable Flexible Quantum‐Dot Light‐Emitting Diodes With Excellent Bending Resistance 具有优异抗弯性能的高效稳定柔性量子点发光二极管

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2026-11-10 DOI: 10.1002/adfm.79607

Jing Xie, Dan Zhou, Xueyu Yu, Qi Dong, Jiayang Mo, Daocheng Pan, Bingsuo Zou, Heng Zhang

{"title":"Highly Efficient and Stable Flexible Quantum‐Dot Light‐Emitting Diodes With Excellent Bending Resistance","authors":"Jing Xie, Dan Zhou, Xueyu Yu, Qi Dong, Jiayang Mo, Daocheng Pan, Bingsuo Zou, Heng Zhang","doi":"10.1002/adfm.79607","DOIUrl":"https://doi.org/10.1002/adfm.79607","url":null,"abstract":"Flexible quantum‐dot light‐emitting diodes (F‐QLEDs) hold great promise for future wearable electronics and foldable display applications, yet their efficiency and stability remain inferior to those of their rigid counterparts. Here, we demonstrate very efficient and stable F‐QLEDs by using a PET/Ag/IZO substrate and an oxide‐layer‐free Ga 60 In 40 top electrode. Due to well‐matched energy levels and high electrical conductivity of the two electrodes, charge injection balance of F‐QLED is significantly improved. As a result, we obtained F‐QLEDs with an impressive external quantum efficiency (EQE) of 30.01% and an exceptional T 95 operational lifetime of 20 966 h at 1000 cd/m 2 , which are all the best values ever reported for F‐QLEDs. Moreover, benefiting from deformation‐tolerant capability of the liquid Ga 60 In 40 , our F‐QLEDs can also exhibit negligible efficiency degradation after bending at an ultra‐low radius of 1 mm, highlighting their excellent bending resistance. On this basis, we further fabricated high performance large‐area F‐QLEDs and double‐sided emitting F‐QLEDs (both with EQEs > 28%), demonstrating the excellent scalability of our device. We believe that the high‐performance, bendable, and scalable F‐QLEDs demonstrated here will paving the way for practical adoption of F‐QLEDs in next‐generation wearable and deformable displays.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"7 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Photodetectors Based on Two‐Dimensional Materials: From Sensory Health Monitoring to Cognitive Neuromorphic Computing 基于二维材料的光电探测器：从感觉健康监测到认知神经形态计算

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2026-11-10 DOI: 10.1002/adfm.79476

Rui Xu, Jiajun Song, Wai‐Yeung Wong, Li Wang, Feng Yan

{"title":"Photodetectors Based on Two‐Dimensional Materials: From Sensory Health Monitoring to Cognitive Neuromorphic Computing","authors":"Rui Xu, Jiajun Song, Wai‐Yeung Wong, Li Wang, Feng Yan","doi":"10.1002/adfm.79476","DOIUrl":"https://doi.org/10.1002/adfm.79476","url":null,"abstract":"Driven by advances in wearable electronics and artificial intelligence, photodetectors have become central to modern sensing technologies. Two‐dimensional (2D) materials have emerged as promising platforms for advanced optoelectronics, owing to their atomic‐scale thickness, widely tunable bandgaps, strong light‐matter interactions, and inherent mechanical flexibility. Although sensory health monitoring and cognitive neuromorphic computing are currently evolving as distinct domains, they represent a continuous technological trajectory from passive data acquisition to active in‐sensor processing. This review provides a comprehensive overview of 2D material‐based photodetectors, bridging flexible healthcare devices and advanced artificial visual systems. First, fundamental photodetection mechanisms, advanced synthesis methods, and device performance enhancement strategies are systematically elucidated. Subsequently, recent progress in flexible photodetectors for health monitoring is summarized. To overcome the power, latency, and data‐transfer limitations of conventional von Neumann architectures, neuromorphic optoelectronic devices are further discussed, particularly artificial optical synapses capable of emulating biological perception‐memory‐processing pipelines for low‐power biomimetic vision and in‐sensor computing. Finally, future challenges are critically assessed, including scalable manufacturing, long‐term stability in biointegrated environments, stretchable devices for suppressing motion artifacts, and multimodal sensory fusion. This review delineates a promising path toward physiological cognitive computing and imperceptible intelligent optoelectronics for precision medicine and edge‐AI diagnostics.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"20 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Crack–Defect Landscapes Enable Multimodal Memristive Switching in WS 2 Mono‐Bilayers 裂纹-缺陷景观使ws2单双能级的多模态记忆开关成为可能

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2026-11-10 DOI: 10.1002/adfm.79516

Anjali Sharma, Moritz Quincke, Yadu Chandran, Bhumit Luhar, Rajib Sahu, Christian Kübel, Ute Kaiser, Viswanath Balakrishnan

{"title":"Crack–Defect Landscapes Enable Multimodal Memristive Switching in WS 2 Mono‐Bilayers","authors":"Anjali Sharma, Moritz Quincke, Yadu Chandran, Bhumit Luhar, Rajib Sahu, Christian Kübel, Ute Kaiser, Viswanath Balakrishnan","doi":"10.1002/adfm.79516","DOIUrl":"https://doi.org/10.1002/adfm.79516","url":null,"abstract":"While nano or micro cracks are often unavoidable during the scalable growth of 2D materials, their role and interactions with vacancies in facilitating variable memristive switching are generally overlooked in device applications. Addressing device‐to‐device and cyclic variability in 2D memristor demands a mechanistic understanding of vacancy dynamics and their conduction pathways. We unveil how point defects and intergranular cracks modulate dynamic memristor behavior in mono‐bilayer WS 2 lateral devices associated with varied sulfur vacancy concentrations, ranging from nearly pristine to ∼10 14 cm −2 , as confirmed by aberration‐corrected electron microscopic and spectroscopic investigations. The crack boundaries act as preferential sites for vacancy migration and charged species, facilitating resistive switching in polycrystalline like WS 2 mono‐bilayers. The observed conductance switching originate from Schottky barrier modulation at the WS 2 metal interface and the redistribution of vacancies within the channel. To enhance the device performance, controlled thermal annealing in distinct environments has been performed. The devices exhibited distinguishable switching for 800 cycles with consistent resistance ratios followed by onset of toggling state and later collapsing to trap state. These findings establish a direct correlation between atomic‐scale defects and memristive performance, providing fundamental insights into vacancy–crack interactions that govern charge transport and stability in 2D materials.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"17 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Physics‐Grounded Materials Artificial Intelligence for Reliable Materials Discovery (Adv. Funct. Mater. 90/2026) 用于可靠材料发现的人工智能（adf . function）。板牙。90/2026)

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2026-11-10 DOI: 10.1002/adfm.79233

Yuhang Wang, Qian Wang, Seong‐Hoon Jang, Hao Li

引用次数: 0

Poisson's Ratio‐Driven Control of Myogenic Differentiation and Maturation in Auxetic Metamaterials under Dynamic Mechanical Stimulation 在动态机械刺激下，泊松比驱动的生成性超材料的肌源性分化和成熟控制

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2026-11-10 DOI: 10.1002/adfm.79363

Maria Kalogeropoulou, Prabhdeep Kaur, Monica Boffito, Pierpaolo Fucile, Gianluca Ciardelli, Lorenzo Moroni

{"title":"Poisson's Ratio‐Driven Control of Myogenic Differentiation and Maturation in Auxetic Metamaterials under Dynamic Mechanical Stimulation","authors":"Maria Kalogeropoulou, Prabhdeep Kaur, Monica Boffito, Pierpaolo Fucile, Gianluca Ciardelli, Lorenzo Moroni","doi":"10.1002/adfm.79363","DOIUrl":"https://doi.org/10.1002/adfm.79363","url":null,"abstract":"Skeletal muscle regeneration requires scaffolds that accommodate the remarkable mechanical heterogeneity of different muscle types while supporting tissue development. Auxetic metamaterials—structures with negative Poisson's ratio that expand laterally when stretched—offer superior mechanical properties including enhanced energy absorption and high yield strain capacity. However, their effects on muscle differentiation under dynamic loading remain unexplored. This study systematically investigated how Poisson's ratio influences skeletal muscle development by designing, fabricating, and mechanically characterizing nine auxetic geometries via melt extrusion printing with a medical‐grade poly(L‐lactide‐co‐ε‐caprolactone) (PLLA/PCL) copolymer copolymer (PLC). Three geometries with distinct Poisson's ratios (tetrachiral ≈ 0, arrowhead ≈ −0.3, Lozenge ≈ −0.68) were selected for biological evaluation. The auxetic scaffolds were loaded with C2C12 myoblasts encapsulated in fibrin hydrogels and underwent cyclic tensile strain (0%–3%) for 3 h daily over 10 days. Gene expression analysis revealed geometry‐dependent differences in differentiation and fiber‐type commitment that were associated with distinct Poisson's ratio profiles. By comparing scaffold geometries spanning a broad range of Poisson's ratio values while maintaining similar constituent material and fabrication conditions, this work demonstrates that negative Poisson's ratio and the mechanical environments generated by auxetic architectures may represent important mechanobiological cues for skeletal muscle engineering.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"12 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 Microenvironment‐Feedback Cascaded Hydrogel for Regenerative Repair of Infected Diabetic Wounds 微环境反馈级联水凝胶用于糖尿病感染伤口的再生修复

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2026-11-10 DOI: 10.1002/adfm.79551

Meilin Qiao, Qirui Fang, Xinyue Huang, Ruibing Yu, Yuan Chen, Junhao Pan, Yuteng Chu, Maier Shi, Yi Hua, Hong Wang, Huawei Zhang, Yue Cai, Xuanrong Sun

{"title":"A Microenvironment‐Feedback Cascaded Hydrogel for Regenerative Repair of Infected Diabetic Wounds","authors":"Meilin Qiao, Qirui Fang, Xinyue Huang, Ruibing Yu, Yuan Chen, Junhao Pan, Yuteng Chu, Maier Shi, Yi Hua, Hong Wang, Huawei Zhang, Yue Cai, Xuanrong Sun","doi":"10.1002/adfm.79551","DOIUrl":"https://doi.org/10.1002/adfm.79551","url":null,"abstract":"Infected diabetic wound repair is hindered by a hostile microenvironment of heavy bacterial burden, persistent oxidative stress, toxin‐driven inflammation, and hypoxia. Here we report a microenvironment‐feedback cascaded hydrogel, termed HL‐10, for infected diabetic wound repair. HL‐10 is formed via dynamic Schiff base crosslinking between L‐arginine ‐modified chitosan and aldehyde‐functionalized F127, with erythrocyte membrane‐hybridized, polymyxin B‐modified and perfluorohexane (PFH)‐loaded liposomes (Rφ‐PLipo‐PFH) embedded within the hydrogel network. The chitosan‐based network first suppresses bacterial growth and biofilm formation. As the acidic and reactive oxygen species (ROS)‐rich conditions trigger matrix degradation, the hydrogel scavenges local ROS and generates nitric oxide to alleviate oxidative stress and inflammation. This degradation process simultaneously exposes the embedded liposomes, which neutralize bacterial toxins and reduce the LPS‐induced M1 macrophage phenotype, while the PFH core provides a sustained oxygen supply to counter hypoxia. In a Pseudomonas aeruginosa ‐infected diabetic model, HL‐10 treatment accelerated wound repair and was accompanied by attenuation of AGE‐RAGE/PI3K‐Akt signaling, restoration of angiogenesis, and improved tissue remodeling, demonstrating a systematic biomaterial approach for managing refractory wounds.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"17 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Environmentally Stable Hydrogel‐Based Biomimetic Leaf for Hyperspectral Camouflage 环境稳定的水凝胶仿生叶片用于高光谱伪装

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2026-11-10 DOI: 10.1002/adfm.79579

Yuanxi Chang, Xiufen Liu, Yangyi Chen, Yan Jia, Haifeng Cheng, Mei Zu

{"title":"Environmentally Stable Hydrogel‐Based Biomimetic Leaf for Hyperspectral Camouflage","authors":"Yuanxi Chang, Xiufen Liu, Yangyi Chen, Yan Jia, Haifeng Cheng, Mei Zu","doi":"10.1002/adfm.79579","DOIUrl":"https://doi.org/10.1002/adfm.79579","url":null,"abstract":"Hydrogel‐based hyperspectral camouflage faces a fundamental trade‐off: water is essential for replicating the diagnostic absorption bands of vegetation, yet its high mobility inevitably causes dehydration, ice nucleation, and spectral distortion. Inspired by plant polyol‐mediated water binding, we report a biomimetic leaf that integrates spectral modulation units (composite dyes and silicon dioxide (SiO 2 ) microspheres) with an ethylene glycol (EG)–water hydrogen‐bonding network in a polyacrylamide matrix. EG locks water into a bound state via hydrogen bonds, reducing its activity and suppressing evaporation and ice crystallization. The optimized leaf achieves a spectral angle cosine of 0.995 against natural Pittosporum leaves (400–1000 nm) and a full‐range (400–2500nm) correlation coefficient of 0.986 against the mean spectrum. It resists dehydration (25°C/40% RH, 2 h) and rehydrates within 14.5 h (25°C/90% RH), mimicking leaf transpiration–moisture cycles. Furthermore, it remains unfrozen and flexible at −20°C, and maintains mechanical integrity after repeated freeze–thaw cycles (−70 to 25°C). Notably, after 4 h of xenon‐lamp aging, its color difference (Δ E = 6.32) is much lower than natural leaves (Δ E = 16.93), indicating superior photostability. Overall, water‐state engineering offers a route to balance spectral fidelity and environmental stability in the design of hyperspectral camouflage materials.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"58 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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