Advanced Materials最新文献_第7页

Over Tenfold Increase in Current Amplification Due to Anisotropic Polymer Chain Alignment in Organic Electrochemical Transistors 有机电化学晶体管中各向异性聚合物链排列导致电流放大增加十倍以上

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-06-02 DOI: 10.1002/adma.202420323

Olivier Bardagot, Pablo Durand, Shubhradip Guchait, Han-Yan Wu, Isabelle Heinzen, Wissal Errafi, Victor Bouylout, Alessandra Pistillo, Chi-Yuan Yang, Gonzague Rebetez, Priscila Cavassin, Badr Jismy, Julien Réhault, Simone Fabiano, Martin Brinkmann, Nicolas Leclerc, Natalie Banerji

{"title":"Over Tenfold Increase in Current Amplification Due to Anisotropic Polymer Chain Alignment in Organic Electrochemical Transistors","authors":"Olivier Bardagot, Pablo Durand, Shubhradip Guchait, Han-Yan Wu, Isabelle Heinzen, Wissal Errafi, Victor Bouylout, Alessandra Pistillo, Chi-Yuan Yang, Gonzague Rebetez, Priscila Cavassin, Badr Jismy, Julien Réhault, Simone Fabiano, Martin Brinkmann, Nicolas Leclerc, Natalie Banerji","doi":"10.1002/adma.202420323","DOIUrl":"https://doi.org/10.1002/adma.202420323","url":null,"abstract":"Organic electrochemical transistors (OECTs) are central to the development of highly sensitive (bio)sensors, energy-efficient neuromorphic devices, and high-precision electrophysiological monitoring systems. With growing interest in these strategic electronic devices, a novel PBTTT polymer bearing single-ether side chains (PBTTT-8O) in OECTs is investigated. Pristine isotropic non-aligned OECT performance matches state-of-the-art transconductance, highlighting the potential of single ethers for designing high-performance organic mixed ionic-electronic conductors (OMIECs). Moreover, a 13× enhancement of current output is achieved by anisotropic polymer chain alignment of PBTTT-8O, opening doors to unprecedented device sensitivity. Compared to pristine ones, aligned OECTs afford a 6× increase in the normalized transconductance (gmL/Wd), reaching an unprecedented 2 580 S cm−1. Such improvement is mainly due to a gain in carrier mobility µ, as evidenced by four distinct methods. In addition, aligned OECTs exhibit faster doping front propagation, ON switching, and OFF switching compared to pristine ones. This study hence reports a versatile and easily transferable approach to concomitantly boost signal amplification and accelerate the response time of bioelectronic devices.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"54 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144193095","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

Quantifying the Effects of Geometric Parameters on the Elastic Properties of Multilayer Graphene Platelet Films 几何参数对多层石墨烯血小板膜弹性性能影响的量化研究

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-06-02 DOI: 10.1002/adma.202502546

Penghao Qi, Xindong Chen, Hanxing Zhu, Yongtao Lyu, Bu Zhang, Qing Peng, Xiqiao Feng, Tongxiang Fan, Di Zhang

{"title":"Quantifying the Effects of Geometric Parameters on the Elastic Properties of Multilayer Graphene Platelet Films","authors":"Penghao Qi, Xindong Chen, Hanxing Zhu, Yongtao Lyu, Bu Zhang, Qing Peng, Xiqiao Feng, Tongxiang Fan, Di Zhang","doi":"10.1002/adma.202502546","DOIUrl":"https://doi.org/10.1002/adma.202502546","url":null,"abstract":"Multilayer graphene platelet films (MGPFs) are widely studied for their exceptional mechanical, electrical, and chemical properties. The elastic properties and deformation mechanisms of MGPFs are highly sensitive to their geometric parameters, including graphene platelet size, graphene area fraction, and layer count. Despite extensive experimental and theoretical efforts, systematically quantifying these effects remains a significant challenge, severely hindering the design of high-performance MGPFs. Here, realistic random 3D periodic representative volume element (RVE) models of MGPFs are constructed to perform simulations, quantify the effects of different geometric parameters on all their five independent elastic properties, and uncover the dominant deformation mechanisms. The results reveal that the dimensionless platelet size, graphene area fraction, and number of platelet layers significantly affect the elastic properties, with detailed quantifications provided for their relationships. The effects of defects on the elastic properties are also explored, offering insights into the dominant deformation mechanisms. Validation against experimental data confirms that the developed RVE models and dimensionless results apply to various multilayer laminate composites, including MGPFs, MXene, graphene oxide films, and nacre-like materials. The findings provide a robust framework and pave the way for optimizing the design of MGPFs and other laminate composites, enabling their potential in diverse applications.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"28 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144193099","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

Synergistic Genetic and Chemical Engineering of Probiotics for Enhanced Intestinal Microbiota Regulation and Ulcerative Colitis Treatment 增强肠道菌群调节和治疗溃疡性结肠炎的益生菌协同遗传和化学工程研究

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-06-01 DOI: 10.1002/adma.202417050

Jiani Jiang, Yi Ma, Liang Zhou, Wenfang Han, Ying Liang, Jiangyan Dong, Yuqin Ding, Wen Li, Qi Lei, Jiangtao Li, Wei Zhu, Qinlu Lin

{"title":"Synergistic Genetic and Chemical Engineering of Probiotics for Enhanced Intestinal Microbiota Regulation and Ulcerative Colitis Treatment","authors":"Jiani Jiang, Yi Ma, Liang Zhou, Wenfang Han, Ying Liang, Jiangyan Dong, Yuqin Ding, Wen Li, Qi Lei, Jiangtao Li, Wei Zhu, Qinlu Lin","doi":"10.1002/adma.202417050","DOIUrl":"https://doi.org/10.1002/adma.202417050","url":null,"abstract":"Live bacterial therapeutics (LBT) hold significant promise for treating ulcerative colitis (UC) by utilizing engineered microorganisms to restore mucosal barrier function, modulate microbiota imbalances, and enhance immunity. However, challenges such as low bacterial survival under harsh gastrointestinal conditions, difficulties in achieving long-term colonization, and unclear therapeutic targets limit their effectiveness. To address these issues, a novel approach is proposed that integrates genetic and chemical engineering for intestinal flora regulation in UC treatment. This strategy employs bacterial programmability and gene editing to produce bactericidal agents that dynamically modulate the intestinal microecology and utilize controlled chemical modifications to enhance bacterial resistance. Using Escherichia coli Nissle 1917 (EcN) as a model, a polyelectrolyte composite coating is developed that significantly increased bacterial survival in the gastrointestinal tract—40-fold in the stomach and 74-fold in the small intestine. Additionally, EcN::mcmA is engineered to overproduce iron-carrier microcins (MccM) with a “Trojan horse” mechanism to target and disrupt pathogenic bacteria. In a dextran sulfate sodium (DSS)-induced mouse UC model, EcN::mcmA@P/O treatment effectively reduced inflammation and improved intestinal flora regulation, presenting a promising and potentially safer long-term solution for UC.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"53 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192796","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

Exploiting Brownian Motion of Plasmonic Nanoparticles Using Optical Printing Approach for on-Demand Physical Unclonable Functions 利用光学打印方法利用等离子体纳米粒子的布朗运动实现按需物理不可克隆功能

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-06-01 DOI: 10.1002/adma.202503976

Jang-Kyun Kwak, Changgyun Moon, Seong-Gyun Im, Taewoo Kang, Heesung Jeong, Byeong-Seok Moon, Hyoungshick Kim, Seok Joon Kwon, Sunkook Kim, Dong-Hwan Kim

{"title":"Exploiting Brownian Motion of Plasmonic Nanoparticles Using Optical Printing Approach for on-Demand Physical Unclonable Functions","authors":"Jang-Kyun Kwak, Changgyun Moon, Seong-Gyun Im, Taewoo Kang, Heesung Jeong, Byeong-Seok Moon, Hyoungshick Kim, Seok Joon Kwon, Sunkook Kim, Dong-Hwan Kim","doi":"10.1002/adma.202503976","DOIUrl":"https://doi.org/10.1002/adma.202503976","url":null,"abstract":"An on-demand fabrication method for additive physical unclonable functions (PUFs), a hardware-based security primitive, is inevitably required, especially considering increasingly miniaturized microelectronic devices. An optical printing approach is regarded as an alternative method to fabricate functional nano/microscale patterns against conventional methods due to its superior fabrication flexibility. However, owing to the Brownian motion of nanoparticles, achieving highly precise and selective printing persists an ongoing obstacle for the applicability of optical printing methods. Here, it is shown that the optical printing approach possesses plenty of room to fabricate on-demand PUFs by exploiting the obstacle from the perspective of randomness. To demonstrate this, an optical PUF based on a mesoscopic lattice pattern consisting of optically printed gold nanoparticles is proposed. Comprehensive analyses on physical features occurring naturally and multi-modal keys generated from them reveal that both exhibit randomness. Through a ternary bit system and key integration approach, the capability of the physical unclonable function using as few as 25 nanoparticles can be ensured in terms of the amount of information, complexity, uniqueness, and encoding capacity. The versatility of optical printing regarding the usability of a broad range of substrates and the ability to create arbitrary patterns with tunable dimensions are also shown.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"134 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192843","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

Functional Fluid-Based Soft Robotic Actuation 基于功能流体的软机器人驱动

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-06-01 DOI: 10.1002/adma.202502669

Chao Zhang, Yiman Duan, Zhongdong Jiao, Yi Zhu, Bing Xu, Huayong Yang, Junhui Zhang

{"title":"Functional Fluid-Based Soft Robotic Actuation","authors":"Chao Zhang, Yiman Duan, Zhongdong Jiao, Yi Zhu, Bing Xu, Huayong Yang, Junhui Zhang","doi":"10.1002/adma.202502669","DOIUrl":"https://doi.org/10.1002/adma.202502669","url":null,"abstract":"Soft robots actuated by fluids offer a series of inherent benefits, including safe human–robot interaction, cost-effectiveness, and geometry adaptability for manipulating delicate objects, making them highly promising in wearable devices, medical equipment, and bio-inspired robots, etc. However, the foremost challenge in fluidic actuation lies in developing standardized, universal actuation methods that are flexible, portable, powerful, fast, low-cost, and safe, rather than still relying on existing rigid pumps and valves originally developed for traditional mechatronic systems. Recent advancements in responsive fluid materials have enabled the emergence of novel functional fluid actuation technologies that convert electrical, magnetic, thermal, chemical, and acoustic energies into fluidic energy without mechanical movable components. These technologies have great potential to provide flexible, portable, and powerful fluidic actuation customized for soft robotics. Here, functional fluid actuation generated from different energies, and their basic principles, structure designs, and robotic applications are introduced. Finally, the advantages and disadvantages of different functional fluid actuation are discussed, and their future trends are prospected. It is hoped this review can provide guidance for the development of fluidic actuation technology specifically tailored for soft robotics.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"19 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192841","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

Oxygen-Assisted CVD Growth of High-Quality Twisted Bilayer Graphene 氧辅助CVD生长高质量双扭曲层石墨烯

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-06-01 DOI: 10.1002/adma.202506242

Mengya Liu, Shuo Wang, Haojie Huang, Xudong Xue, Xiahong Zhou, Zhongqiang Chen, Shan Liu, Xitong Liu, Jichen Dong, Wei Niu, Yunqi Liu, Liping Wang, Gui Yu

{"title":"Oxygen-Assisted CVD Growth of High-Quality Twisted Bilayer Graphene","authors":"Mengya Liu, Shuo Wang, Haojie Huang, Xudong Xue, Xiahong Zhou, Zhongqiang Chen, Shan Liu, Xitong Liu, Jichen Dong, Wei Niu, Yunqi Liu, Liping Wang, Gui Yu","doi":"10.1002/adma.202506242","DOIUrl":"https://doi.org/10.1002/adma.202506242","url":null,"abstract":"Twisted bilayer graphene (tBLG) garners significant interest due to its unconventional superconductivity and correlated insulator behavior. However, challenges persist in preparing high-quality tBLG with clean interfaces and a broad range of twist angles. Herein, a chemical vapor deposition (CVD) method is presented that utilizes an oxygen-assisted strategy to grow high-quality tBLG with twist angles ranging from 0° to 30°. The continuous and stable oxygen supply not only facilitates rapid graphene growth, but also overcomes the self-limiting growth of monolayer graphene on liquid Cu. Consequently, the growth rate of tBLG reaches a record of 450 µm h−1, with 86.9% of the tBLG grown with the assistance of the oxide substrate. The proportion of tBLG with small twist angles (0° < 𝜃 ≤ 3°) improves to ≈9.15%, one of the highest percentages for CVD-grown tBLG within this range. Density functional theory calculations explain in detail the assisted effect of oxygen on the rapid growth and twist angle distribution of tBLG. Furthermore, the presence of a clear moiré superlattice, ultrahigh Hall mobility of 20 616 cm2 V−1 s−1, weak localization effect, and Shubnikov-de Haas oscillations corroborate the high-quality of tBLG. The research offers a new and feasible way of growing tBLG.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"10 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192844","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

Atomically-Thin Freestanding Racetrack Memory Devices 自动薄的独立式赛道存储设备

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-06-01 DOI: 10.1002/adma.202505707

Ke Gu, Prajwal Rigvedi, Peng Wang, Zihan Yin, Hakan Deniz, Andrea Migliorini, Stuart S.P. Parkin

{"title":"Atomically-Thin Freestanding Racetrack Memory Devices","authors":"Ke Gu, Prajwal Rigvedi, Peng Wang, Zihan Yin, Hakan Deniz, Andrea Migliorini, Stuart S.P. Parkin","doi":"10.1002/adma.202505707","DOIUrl":"https://doi.org/10.1002/adma.202505707","url":null,"abstract":"Advances in freestanding membranes allow novel heterostructures to be formed from distinct families of materials in 2D or 3D configurations. Recently, this technique has been used to form a 3D racetrack memory device by transferring a complex magnetic thin film heterostructure, in the form of a membrane, onto a corrugated surface. The membrane is released using a water-soluble oxide layer (Sr3Al2O6). The magnetic structure within the membrane is supported by a thin buffer layer (MgO), which decouples the magnetic structure from the receiving surface. Here it is shown that ultrathin freestanding racetrack membranes can be formed without any buffer layer and that the current-induced motion of magnetic domain walls within the transferred racetrack is highly efficient. Furthermore, the absence of any buffer layer enables local engineering of the racetracks via their direct coupling with pre-patterned platinum underlayers on which they are placed. The presence or absence of the Pt underlayer allows for local modulation of the current and field-induced manipulation of the racetrack magnetization. In addition, the ultrathin freestanding membranes exhibit excellent flexibility and enable highly reliable racetrack devices. The findings highlight the potential of freestanding magnetic heterostructure membranes for advanced spintronic applications.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"36 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192846","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

Heteronanoarchitecture of Ti3C2Tx MXene and Amorphous MOF for Exceptional Durability in Electro-Ionic Soft Actuator Ti3C2Tx MXene的异质结构和非晶MOF在电离子软驱动器中的卓越耐久性

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-06-01 DOI: 10.1002/adma.202500479

Manmatha Mahato, Jaehwan Kim, Myung-Joon Lee, Seongjun Jo, Gwonmin Kim, Sanghee Nam, Ji-Seok Kim, Van Hiep Nguyen, Mousumi Garai, Hyunjoon Yoo, Daniel Saatchi, Zakir Ullah, Chi Won Ahn, Yury Gogotsi, Il-Kwon Oh

{"title":"Heteronanoarchitecture of Ti3C2Tx MXene and Amorphous MOF for Exceptional Durability in Electro-Ionic Soft Actuator","authors":"Manmatha Mahato, Jaehwan Kim, Myung-Joon Lee, Seongjun Jo, Gwonmin Kim, Sanghee Nam, Ji-Seok Kim, Van Hiep Nguyen, Mousumi Garai, Hyunjoon Yoo, Daniel Saatchi, Zakir Ullah, Chi Won Ahn, Yury Gogotsi, Il-Kwon Oh","doi":"10.1002/adma.202500479","DOIUrl":"https://doi.org/10.1002/adma.202500479","url":null,"abstract":"The assembly of 2D nanosheets with other functional nanomaterials enables the creation of materials with unique property combinations that cannot be achieved in single-phase materials. In particular, a combination of inorganic and organic components provides a pathway to structures offering highly durable ionic and electronic conductivity simultaneously. Here, a controlled growth of amorphous metal–organic framework (aMOF) in the interlayer spaces of Ti3C2Tx MXene for enhancing oxidation stability and accelerating fast ion transport is reported. The hydrophilic terminations of MXene provide support for the continuous growth of iron-based aMOF in the available interlayer 2D slits. Effective electronic interactions involving hydrogen bonding, coordination, and esterification in-between the open surfaces of MXene and nanoporous aMOF enhance the electrochemical strength of MXene–aMOF hybrid electrodes and allow the design of extremely durable electro-ionic soft actuators. The MXene–aMOF exhibits a fivefold increment in electroactuation compared to a conventional poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) soft actuator, with robust stability up to 50 000 cycles in open air. Using the MXene–aMOF soft actuator, a deformable morphing surface with reversibly adjustable shapes and patterns is demonstrated.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"46 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192712","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

Liquid Metal-Vitrimer Conductive Composite for Recyclable and Resilient Electronics 用于可回收和弹性电子产品的液态金属-玻璃体导电复合材料

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-06-01 DOI: 10.1002/adma.202501341

Dong Hae Ho, Meng Jiang, Ravi Tutika, Joshua C. Worch, Michael D. Bartlett

{"title":"Liquid Metal-Vitrimer Conductive Composite for Recyclable and Resilient Electronics","authors":"Dong Hae Ho, Meng Jiang, Ravi Tutika, Joshua C. Worch, Michael D. Bartlett","doi":"10.1002/adma.202501341","DOIUrl":"https://doi.org/10.1002/adma.202501341","url":null,"abstract":"Electronic devices are ubiquitous in modern society, yet their poor recycling rates contribute to substantial economic losses and worsening environmental impacts from electronic waste (E-waste) disposal. Here, recyclable and healable electronics are reported through a vitrimer-liquid metal (LM) microdroplet composite. These electrically conductive, yet plastic-like composites display mechanical qualities of rigid thermosets and recyclability through a dynamic covalent polymer network. The composite exhibits a high glass transition temperature, good solvent resistance, high electrical conductivity, and recyclability. The vitrimer synthesis proceeds without the need for a catalyst or a high curing temperature, which enables facile fabrication of the composite materials. The as-synthesized vitrimer exhibits a fast relaxation time with reconfigurability and shape memory. The electrically conductive composite exhibits high electrical conductivity with LM volume loading as low as 5 vol.%. This enables the fabrication of fully vitrimer-based circuit boards consisting of sensors and indicator LEDs integrated with LM-vitrimer conductive wiring. Electrical self-healing and thermally triggered material healing are further demonstrated with the composites. The vitrimer and LM-composite provide a pathway toward fully recyclable, mechanically robust, and reconfigurable electronics, thus advancing the field of electronic materials.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"47 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192789","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

Spatially Resolved Observation of Ferroelectric-to-Paraelectric Phase Transition in a Two-Dimensional Halide Perovskite 二维卤化物钙钛矿铁电-准电相变的空间分辨观察

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-06-01 DOI: 10.1002/adma.202506270

Tae Hyun Jung, Yunseung Kuk, June Hee Shin, Jihyun Lee, Jiyoon Leem, Seong Bin Bae, Jeong Bin Cho, Sang Woo Lee, Taek Rim Kim, Hyeokju Kang, Yong Soo Kim, Myung-Hwa Jung, Joon I. Jang, Kang Min Ok, Sang Mo Yang

{"title":"Spatially Resolved Observation of Ferroelectric-to-Paraelectric Phase Transition in a Two-Dimensional Halide Perovskite","authors":"Tae Hyun Jung, Yunseung Kuk, June Hee Shin, Jihyun Lee, Jiyoon Leem, Seong Bin Bae, Jeong Bin Cho, Sang Woo Lee, Taek Rim Kim, Hyeokju Kang, Yong Soo Kim, Myung-Hwa Jung, Joon I. Jang, Kang Min Ok, Sang Mo Yang","doi":"10.1002/adma.202506270","DOIUrl":"https://doi.org/10.1002/adma.202506270","url":null,"abstract":"2D halide perovskite ferroelectrics have garnered significant attention due to their potential applications and intriguing fundamental properties. However, their temperature-dependent ferroelectric behaviors, particularly at the nanoscale, remain poorly understood. In this study, the nanoscale ferroelectric domain evolution with temperature and ferroelectric-to-paraelectric phase transition in (BA)2(MA)Pb2Br7 films are investigated using piezoresponse force microscopy (PFM). Angle-resolved lateral PFM (LPFM) reveals a complex in-plane ferroelectric domain structure. Temperature-dependent LPFM measurements clearly show that the Curie temperature (TC) is ≈353 K, as confirmed by other macroscopic measurements. Notably, it is observed that the ferroelectric-to-paraelectric phase transition initiates locally even below TC. As the temperature increases, large ferroelectric domains fragment into smaller ones and the regions with the novel LPFM phase signal emerge, indicating a local phase transition. Furthermore, temperature-dependent LPFM spectroscopy demonstrates a progressive weakening of the ferroelectricity. The analysis based on Landau–Ginzburg–Devonshire theory identifies a second-order phase transition, consistent with the gradual evolution of nanoscale ferroelectric domains observed in LPFM images. This spatially resolved observation of phase transition provides critical insights into the temperature-dependent ferroelectric properties of 2D halide perovskite ferroelectrics and establishes a foundational framework for their future device applications.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"36 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192710","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