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Cost-Effective Symmetric PbSe-Based Device for Thermoelectric Cooling 具有成本效益的对称pbse热电冷却器件
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-04-29 DOI: 10.1002/adma.202502705
Liqing Xu, Tao Hong, Shibo Liu, Sining Wang, Dongrui Liu, Tianhang Zhou, Yu Xiao, Li-Dong Zhao
{"title":"Cost-Effective Symmetric PbSe-Based Device for Thermoelectric Cooling","authors":"Liqing Xu, Tao Hong, Shibo Liu, Sining Wang, Dongrui Liu, Tianhang Zhou, Yu Xiao, Li-Dong Zhao","doi":"10.1002/adma.202502705","DOIUrl":"https://doi.org/10.1002/adma.202502705","url":null,"abstract":"Thermoelectric cooling technology has broad applications but is limited by the high cost of tellurium (Te) in commercially available Bi<sub>2</sub>Te<sub>3</sub>-based thermoelectric materials. Herein, a cost-effective symmetric PbSe-based device constructed from 7 pairs of Pb<sub>0.988</sub>Cu<sub>0.002</sub>Se (p-type) and Pb<sub>1.02</sub>Cu<sub>0.002</sub>Se (n-type) is presented, which demonstrates impressive cooling temperature difference (Δ<i>T</i><sub>C</sub>) of 32.8 and 41.0 K with the hot side maintained at 303 and 343 K, respectively. This low-cost symmetric PbSe-based device exhibits superior cost-effectiveness (Δ<i>T</i>/cost) for near-room-temperature thermoelectric cooling compared to other Bi<sub>2</sub>Te<sub>3</sub>-based devices. Its high cooling performance primarily stems from an advanced carrier and phonon transport properties in p-type Pb<sub>0.988</sub>Cu<sub>0.002</sub>Se. Specifically, Pb vacancy and Cu substitution in Pb<sub>0.988</sub>Cu<sub>0.002</sub>Se act as strong p-type dopants that effectively optimize carrier density, resulting in a maximum power factor of 28.69 µW cm<sup>−1</sup> K<sup>−2</sup> at room temperature. Moreover, the mobile Cu atoms within the lattice significantly impede phonon propagation, leading to a low room-temperature lattice thermal conductivity of 1.10 W m<sup>−1</sup> K<sup>−1</sup>. Finally, the room-temperature figure of merit (<i>ZT</i>) and average <i>ZT</i> value in p-type Pb<sub>0.988</sub>Cu<sub>0.002</sub>Se can reach 0.6 and 0.68 at 300–573 K, surpassing previous p-type PbSe-based polycrystals. This work emphasizes the significant potential of a cost-effective PbSe compound for near-room-temperature cooling applications.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"81 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143884987","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
Thermo-Electric-Mechanical Coupling Selects Barrier Layer for Advanced Bismuth Telluride Thermoelectric Generator 先进碲化铋热电发电机热电-机械耦合阻挡层的选择
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-04-29 DOI: 10.1002/adma.202503580
Liya Miao, Qiang Zhang, Minhui Yuan, Ruyuan Li, Min Wang, Xiaojian Tan, Jiehua Wu, Guo-Qiang Liu, Jun Jiang
{"title":"Thermo-Electric-Mechanical Coupling Selects Barrier Layer for Advanced Bismuth Telluride Thermoelectric Generator","authors":"Liya Miao, Qiang Zhang, Minhui Yuan, Ruyuan Li, Min Wang, Xiaojian Tan, Jiehua Wu, Guo-Qiang Liu, Jun Jiang","doi":"10.1002/adma.202503580","DOIUrl":"https://doi.org/10.1002/adma.202503580","url":null,"abstract":"The long-term stability of thermoelectric generators, including those based on Bi<sub>2</sub>Te<sub>3</sub>, is hindered by the lack of ideal thermoelectric barrier materials (TEbMs). Conventional selection methods for TEbMs mainly rely on trial-and-error, which is time-consuming and does not reveal the underlying mechanisms. In this study, a new design principle for selecting TEbMs based on thermo–electric–mechanical coupling is proposed. By combining the phase diagram predictions with the thermal expansion coefficients and electrical resistivities of the potential reactants, the Ni<sub>2</sub>SbTe<sub>2</sub> and NiTe<sub>2</sub> compounds are identified as ideal TEbMs for (Bi,Sb)<sub>2</sub>Te<sub>3</sub> and Bi<sub>2</sub>(Te,Se)<sub>3</sub>, respectively, leading to interfaces with high thermal stability, low contact resistivity, and high strength. The fabricated thermoelectric generator achieves a competitive conversion efficiency of 7.1% and a power density of 0.49 W cm<sup>−2</sup> at hot-side and cold-side temperatures of 523 and 296 K, respectively. Moreover, performance degradation is negligible after 200 h of cycling. This work demonstrates progress toward stable high-performance service, provides the foundation for applications in low-grade heat recovery, and offers new insights for more thermoelectric generators.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"48 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143885301","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
Simultaneous Isotropic Omnidirectional Hypersensitive Strain Sensing and Deep Learning-Assisted Direction Recognition in a Biomimetic Stretchable Device (Adv. Mater. 17/2025) 同时各向同性全向超敏应变传感和深度学习辅助方向识别的仿生可拉伸装置(Adv. Mater. 17/2025)
IF 27.4 1区 材料科学
Advanced Materials Pub Date : 2025-04-29 DOI: 10.1002/adma.202570126
Muzi Xu, Jiaqi Zhang, Chaoqun Dong, Chenyu Tang, Fangxin Hu, George G. Malliaras, Luigi G. Occhipinti
{"title":"Simultaneous Isotropic Omnidirectional Hypersensitive Strain Sensing and Deep Learning-Assisted Direction Recognition in a Biomimetic Stretchable Device (Adv. Mater. 17/2025)","authors":"Muzi Xu,&nbsp;Jiaqi Zhang,&nbsp;Chaoqun Dong,&nbsp;Chenyu Tang,&nbsp;Fangxin Hu,&nbsp;George G. Malliaras,&nbsp;Luigi G. Occhipinti","doi":"10.1002/adma.202570126","DOIUrl":"https://doi.org/10.1002/adma.202570126","url":null,"abstract":"<p><b>Biomimetic Isotropic Omnidirectional Intelligent Strain Sensor</b></p><p>Inspired by human fingerprints, an isotropic omnidirectional strain sensor in a heterogeneous skin-compatible soft substrate is proposed. The design as an involute of a circle structure achieves hypersensitivity and enables intelligent direction discrimination ability for applications in healthcare, soft robotics and more. More details can be found in article number 2420322 by Muzi Xu, Luigi G. Occhipinti and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"37 17","pages":""},"PeriodicalIF":27.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adma.202570126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143884074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Superior Energy Storage Performance in a Self-Organized Trirelaxor-Antiferroelectric Nanocomposite Over a Wide Temperature Range 宽温度范围内自组织三弛豫-反铁电纳米复合材料的优异储能性能
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-04-29 DOI: 10.1002/adma.202502788
Jingzhe Xu, Yongbin Liu, Dong Wang, Li He, Lisheng Zhong, Jinghui Gao, Ming Wu, Ruifeng Yao, Nan Zhang, Xiaojie Lou, Shengtao Li, Xiaobing Ren
{"title":"Superior Energy Storage Performance in a Self-Organized Trirelaxor-Antiferroelectric Nanocomposite Over a Wide Temperature Range","authors":"Jingzhe Xu, Yongbin Liu, Dong Wang, Li He, Lisheng Zhong, Jinghui Gao, Ming Wu, Ruifeng Yao, Nan Zhang, Xiaojie Lou, Shengtao Li, Xiaobing Ren","doi":"10.1002/adma.202502788","DOIUrl":"https://doi.org/10.1002/adma.202502788","url":null,"abstract":"A fundamental paradox in energy storage dielectrics lies in the challenge of achieving superior performance consistently across both room and elevated temperatures. This is addressed by designing a self-organized nanocomposite (1−x)(Ba,Sr)(Ti,Sn)O<sub>3</sub>-xBi<sub>1.5</sub>ZnNb<sub>1.5</sub>O<sub>7</sub> composed of nano-sized antiferroelectric(AFE) particles embedded into a trirelaxor(TRE) matrix through nanoscale phase separation process. The optimal composition at x = 0.11 exhibits outstanding energy storage performance from room temperature (energy density = 8.5 J cm<sup>−3</sup>, efficiency = 94.8%, and figure of merit of 167 J cm<sup>−3</sup>) up to 200 °C (energy density = 4.85 J cm<sup>−3</sup>, efficiency &gt;90% and figure of merit of 49 J cm<sup>−3</sup>), outperforming existing Pb-free dielectrics. High-resolution transmission electron microscopy and synchrotron x-ray diffractometry reveal that the coexisting nanometric antiferroelectric particles and the trirelaxor nanodomains sustain over a wide temperature range. Piezoresponse force microscopy and phase-field simulation show that hysteresis-free switching of trirelaxor nanodomains enables enhanced polarization and low hysteretic loss. Resistivity shows a 2–3 order of magnitude increases accompanying significant increase in breakdown strength up to high temperatures, attributable to deep charge trapping effect at high-density TRE/AFE interfaces as evidenced by thermally stimulated depolarization current. These favorable effects in the nano-composite are responsible for its high energy storage performance up to high temperatures.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"9 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143885303","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
Advancing Self-Assembled Molecules Toward Interface-Optimized Perovskite Solar Cells: from One to Two 向界面优化的钙钛矿太阳能电池推进自组装分子:从一到二
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-04-29 DOI: 10.1002/adma.202502032
Tanghao Liu, Chuanyao Luo, Ruiqin He, Zhuoqiong Zhang, Xiaohui Lin, Yimu Chen, Tom Wu
{"title":"Advancing Self-Assembled Molecules Toward Interface-Optimized Perovskite Solar Cells: from One to Two","authors":"Tanghao Liu, Chuanyao Luo, Ruiqin He, Zhuoqiong Zhang, Xiaohui Lin, Yimu Chen, Tom Wu","doi":"10.1002/adma.202502032","DOIUrl":"https://doi.org/10.1002/adma.202502032","url":null,"abstract":"Perovskite solar cells (PSCs) have rapidly gained prominence as a leading candidate in the realm of solution-processable third-generation photovoltaic (PV) technologies. In the high-efficiency inverted PSCs, self-assembled monolayers (SAMs) are often used as hole-selective layers (HSLs) due to the advantages of high transmittance, energy level matching, low non-radiative recombination loss, and tunable surface properties. However, SAMs have been recognized to suffer from some shortcomings, such as incomplete coverage, weak bonding with substrate or perovskite, instability, and so on. The combination of different SAMs or so-called co-SAM is an effective strategy to overcome this challenge. In this Perspective, the latest achievements in molecule design, deposition method, working principle, and application of the co-SAM are discussed. This comprehensive overview of milestones in this rapidly advancing research field, coupled with an in-depth analysis of the improved interface properties using the co-SAM approach, aims to offer valuable insights into the key design principles. Furthermore, the lessons learned will guide the future development of SAM-based HSLs in perovskite-based optoelectronic devices.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"46 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143885307","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
Decoupling Lithium Reutilization Behavior under Different Discharge Rates for Anode-Free Lithium Metal Batteries 不同放电速率下无阳极锂金属电池的解耦锂再利用行为
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-04-29 DOI: 10.1002/adma.202503582
Shuo Zhang, Chong Yan, Ye Xiao, Yi-Hui Wu, Jia-Qi Huang
{"title":"Decoupling Lithium Reutilization Behavior under Different Discharge Rates for Anode-Free Lithium Metal Batteries","authors":"Shuo Zhang, Chong Yan, Ye Xiao, Yi-Hui Wu, Jia-Qi Huang","doi":"10.1002/adma.202503582","DOIUrl":"https://doi.org/10.1002/adma.202503582","url":null,"abstract":"Anode-free lithium metal battery (AFLMB) has become an excellent candidate for long endurance electric vehicles and electric low altitude aircraft, profiting from its high energy density as well as outstanding manufacturing safety. However, the limitation at high discharge rates of AFLMBs is shrouded in mystery, yet to achieve more attention. Herein, the limitation of fast discharge for AFLMBs is dissected exhaustively, and a symptomatic strategy to break the limit is put forward, in order to eliminate the inevitable mismatch that lies in the inferior performance of AFLMBs. A “volcano-type” curve of capacity retention of AFLMBs is discovered with the discharge rate increased. Systematic investigation revealed that the overlapped spatial relationship between fresh deposited Li and residue Li<sup>0</sup> facilitated the utilization of “recoverable Li<sup>0</sup>” (Li<sup>0</sup>) at the prophase of discharge rate increase. However, further enhanced discharge rate induced large concentration polarization (<i>η</i><sub>conc</sub>), reflecting limited Li<sup>+</sup> diffusion. Enabling the electrolyte to rapidly transport Li<sup>+</sup> by lowering <i>η</i><sub>conc</sub> increased the optimal discharge rate as well as the cycling stability of AFLMBs. This work reveals the rate-determining step for high-rate discharge and expands the employment boundary of AFLMBs under harsh conditions, providing a significant complement of present knowledge with respect to the power performance of AFLMBs.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"52 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143889510","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
Structured Light Projection Using Image Guide Fibers for In Situ Photo-biofabrication 利用图像引导纤维进行原位光生物制造的结构光投射
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-04-29 DOI: 10.1002/adma.202419350
Parth Chansoria, Michael Winkelbauer, Shipin Zhang, Jakub Janiak, Hao Liu, Dimitar Boev, Andrea Morandi, Rachel Grange, Marcy Zenobi-Wong
{"title":"Structured Light Projection Using Image Guide Fibers for In Situ Photo-biofabrication","authors":"Parth Chansoria, Michael Winkelbauer, Shipin Zhang, Jakub Janiak, Hao Liu, Dimitar Boev, Andrea Morandi, Rachel Grange, Marcy Zenobi-Wong","doi":"10.1002/adma.202419350","DOIUrl":"https://doi.org/10.1002/adma.202419350","url":null,"abstract":"Light-based biofabrication techniques have revolutionized the field of tissue engineering and regenerative medicine. Specifically, the projection of structured light, where the spatial distribution of light is controlled at both macro and microscale, has enabled precise fabrication of complex three dimensional structures with high resolution and speed. However, despite tremendous progress, biofabrication processes are mostly limited to benchtop devices which limit the flexibility in terms of where the fabrication can occur. Here, a Fiber-assisted Structured Light (FaSt-Light) projection apparatus for rapid in situ crosslinking of photoresins is demonstrated. This approach uses image-guide fiber bundles which can project bespoke images at multiple wavelengths, enabling flexibility and spatial control of different photoinitiation systems and crosslinking chemistries and also the location of fabrication. Coupling of different sizes of fibers and different lenses attached to the fibers to project small (several mm) or large (several cm) images for material crosslinking is demonstrated. FaSt-Light allows control over the cross-section of the crosslinked resins and enables the introduction of microfilaments which can further guide cellular infiltration, differentiation, and anisotropic matrix production. The proposed approach can lead to a new range of in situ biofabrication techniques which improve the translational potential of photofabricated tissues and grafts.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"9 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143885253","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
Crossing the Dimensional Divide with Optoelectronic Tweezers: Multicomponent Light-Driven Micromachines with Motion Transfer in Three Dimensions (Adv. Mater. 17/2025) 用光电镊子跨越维度鸿沟:具有三维运动传递的多组件光驱动微机械(Adv. Mater. 17/2025)
IF 27.4 1区 材料科学
Advanced Materials Pub Date : 2025-04-29 DOI: 10.1002/adma.202570130
Gong Li, Bingrui Xu, Xiaopu Wang, Jiangfan Yu, Yifan Zhang, Rongxin Fu, Fan Yang, Hongcheng Gu, Yuchen Huang, Yujie Chen, Yanfeng Zhang, Zhuoran Wang, Guozhen Shen, Yeliang Wang, Huikai Xie, Aaron R. Wheeler, Jiafang Li, Shuailong Zhang
{"title":"Crossing the Dimensional Divide with Optoelectronic Tweezers: Multicomponent Light-Driven Micromachines with Motion Transfer in Three Dimensions (Adv. Mater. 17/2025)","authors":"Gong Li,&nbsp;Bingrui Xu,&nbsp;Xiaopu Wang,&nbsp;Jiangfan Yu,&nbsp;Yifan Zhang,&nbsp;Rongxin Fu,&nbsp;Fan Yang,&nbsp;Hongcheng Gu,&nbsp;Yuchen Huang,&nbsp;Yujie Chen,&nbsp;Yanfeng Zhang,&nbsp;Zhuoran Wang,&nbsp;Guozhen Shen,&nbsp;Yeliang Wang,&nbsp;Huikai Xie,&nbsp;Aaron R. Wheeler,&nbsp;Jiafang Li,&nbsp;Shuailong Zhang","doi":"10.1002/adma.202570130","DOIUrl":"https://doi.org/10.1002/adma.202570130","url":null,"abstract":"<p><b>Light-Driven Micromachines with Motion Transfer in 3D</b></p><p>In article number 2417742, Shuailong Zhang, Jiafang Li, and co-workers present light-driven multi-component micromachines that facilitate 3D motion transfer across different planes. These micromachines, fabricated using standard photolithography combined with direct laser writing, are assembled and actuated via programmable light patterns within an optoelectronic tweezers system. Utilizing charge-induced repulsion and dielectrophoretic levitation effects, the micromachines enable highly efficient mechanical rotation and effective inter-component motion transfer in three dimensions.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"37 17","pages":""},"PeriodicalIF":27.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adma.202570130","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143884076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanofibrous Guidance Conduits with Multiple Gradient Cues for Spinal Cord Repair 多梯度线索的纳米纤维引导导管用于脊髓修复
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-04-29 DOI: 10.1002/adma.202503892
Xindan Zhang, Wen Guo, Jiangang Zhang, Feng Xiong, Zehao Yao, Jiaqi Lin, Shuyun Hu, Qingsheng Liu, Feng Tian, Nana Zhao, Yonglai Lu, Jiliang Zhai, Yunfeng Lu, Jiajia Xue
{"title":"Nanofibrous Guidance Conduits with Multiple Gradient Cues for Spinal Cord Repair","authors":"Xindan Zhang, Wen Guo, Jiangang Zhang, Feng Xiong, Zehao Yao, Jiaqi Lin, Shuyun Hu, Qingsheng Liu, Feng Tian, Nana Zhao, Yonglai Lu, Jiliang Zhai, Yunfeng Lu, Jiajia Xue","doi":"10.1002/adma.202503892","DOIUrl":"https://doi.org/10.1002/adma.202503892","url":null,"abstract":"Spinal cord injury (SCI) is a debilitating condition that leads to severe disabilities and imposes significant economic and social burdens. Current therapeutic strategies primarily focus on symptom management, with limited success in promoting full neurological recovery. In response to this challenge, the design of novel guidance conduits incorporating multiple gradient cues, inspired is reported by biological processes, to enhance spinal cord repair. These conduits are fabricated using electrospinning and masked coaxial electrospraying, a simple yet effective method that integrates topological, haptotactic, and chemotactic cues into a single scaffold. The synergy of these cues significantly promoted cell migration, neural stem cell differentiation into neurons, and axonal extension, resulting in substantial improvements in spinal cord regeneration and functional recovery in a rat model. Single-nucleus RNA sequencing further demonstrated that the guidance conduit inhibited fibroblast proliferation, preserved microglial homeostasis, restored cellular proportions, and facilitated the regeneration of neuronal axons, dendrites, and synapses. This work presents an innovative, versatile platform for fabricating tissue scaffolds that integrate multiple gradient cues, offering a promising strategy for SCI treatment and broader tissue regeneration applications.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"40 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143885302","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 Multimodal Humidity Adaptive Optical Neuron Based on a MoWS2/VOx Heterojunction for Vision and Respiratory Functions 基于MoWS2/VOx异质结的多模态湿度自适应光学神经元的视觉和呼吸功能
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-04-29 DOI: 10.1002/adma.202417793
Abdul Momin Syed, Dhananjay D. Kumbhar, Hanrui Li, Manoj Kumar Rajbhar, Dayanand Kumar, Pratibha Pal, Nimer Wehbe, Mohamed ben Hassine, Nazek El-Atab
{"title":"A Multimodal Humidity Adaptive Optical Neuron Based on a MoWS2/VOx Heterojunction for Vision and Respiratory Functions","authors":"Abdul Momin Syed, Dhananjay D. Kumbhar, Hanrui Li, Manoj Kumar Rajbhar, Dayanand Kumar, Pratibha Pal, Nimer Wehbe, Mohamed ben Hassine, Nazek El-Atab","doi":"10.1002/adma.202417793","DOIUrl":"https://doi.org/10.1002/adma.202417793","url":null,"abstract":"Advancements in computing have progressed from near-sensor to in-sensor computing, culminating in the development of multimodal in-memory computing, which enables faster, energy-efficient data processing by performing computations directly within the memory devices. A bio-inspired multimodal in-memory computing system capable of performing real-time low power processing of multisensory signals, lowering data conversion and transmission across several modules in conventional chips is introduced. A novel Cu/MoWS<sub>2</sub>/VO<i><sub>x</sub></i>/Pt based multimodal memristor is characterized by an ON/OFF ratio as high as 10<sup>8</sup> with consistent and ultralow operating voltages of ±0.2 surpassing conventional single-mode memory functions. Apart from observing electrical synaptic behavior, photonic depression and humidity mediated optical synaptic learning is also demonstrated. The heterojunction with MoWS<sub>2</sub> also enables reconfigurable modulation in both memory and optical synaptic functionalities with changing humidity. This behavior provides tunable conductance modulation capabilities emulating synaptic transmission in biological neurons while showing potential in respiratory detection module for healthcare application. The humidity sensing capability is implemented to demonstrate vision clarity using a convolutional neural network (CNN), with different humidity levels applied as a data augmentation preprocessing method. This proposed multimodal functionality represents a novel platform for developing artificial sensory neurons, with significant implications for non-contact human–computer interaction in intelligent systems.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"8 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143885255","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
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