Materials Today最新文献

High strain rate compressive deformation behavior of nickel microparticles 镍微粒的高应变速率压缩变形行为

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-05-17 DOI: 10.1016/j.mattod.2025.05.014

Bárbara Bellón , Lalith Kumar Bhaskar , Tobias Brink , Raquel Aymerich-Armengol , Dipali Sonawane , Dominique Chatain , Gerhard Dehm , Rajaprakash Ramachandramoorthy

{"title":"High strain rate compressive deformation behavior of nickel microparticles","authors":"Bárbara Bellón , Lalith Kumar Bhaskar , Tobias Brink , Raquel Aymerich-Armengol , Dipali Sonawane , Dominique Chatain , Gerhard Dehm , Rajaprakash Ramachandramoorthy","doi":"10.1016/j.mattod.2025.05.014","DOIUrl":"10.1016/j.mattod.2025.05.014","url":null,"abstract":"<div><div>Understanding the mechanical properties of metals at extreme conditions is essential for the advancement of miniaturized technologies. As dimensions decrease, materials will experience higher strain rates at the same applied velocities. Moreover, the interplay effects of strain rates and temperatures are often overlooked and could have critical effects in applications. In this study, for the first time, the rate-dependent and temperature-dependent mechanical response of nickel microparticles has been investigated. The microparticles were obtained by solid-state dewetting of nickel thin films deposited on c-sapphire. They exhibit self-similar shapes with identical sets of planes, facilitating straightforward comparison between particles. This research represents the first in-depth analysis of the mechanical properties of nickel single crystal dewetted microparticles across six orders of magnitude at room temperature and three orders of magnitude at 128 K. Molecular dynamics simulations (MD) were conducted in parallel on particles with the same faceting. In this work, the gap between experiments and simulations has been reduced to one order of magnitude in size and 3 orders of magnitude in the strain rates. Thermal activation parameter analysis and MD simulations were employed to ascertain whether homogeneous or heterogeneous dislocation nucleation was the dominant mechanism controlling deformation in the particles.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"87 ","pages":"Pages 90-102"},"PeriodicalIF":21.1,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254373","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

Programmable magnetic hydrogel robots with drug delivery and physiological sensing capabilities 具有药物输送和生理传感能力的可编程磁水凝胶机器人

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-05-16 DOI: 10.1016/j.mattod.2025.05.008

Hegeng Li , Shaojun Jiang , Qiyu Deng , Wei Li , Weixin Zhang , Hengjia Zhu , Zhipeng Zhao , Yiyuan Zhang , Liqiu Wang , Lizhi Xu

{"title":"Programmable magnetic hydrogel robots with drug delivery and physiological sensing capabilities","authors":"Hegeng Li , Shaojun Jiang , Qiyu Deng , Wei Li , Weixin Zhang , Hengjia Zhu , Zhipeng Zhao , Yiyuan Zhang , Liqiu Wang , Lizhi Xu","doi":"10.1016/j.mattod.2025.05.008","DOIUrl":"10.1016/j.mattod.2025.05.008","url":null,"abstract":"<div><div>Magnetic hydrogels are promising materials for the construction of magnetic soft robots applied in robotic systems and implantable devices. However, programming geometric shapes and magnetization profiles of magnetic hydrogel robots (MHRs), as well as integrating functional modules into robotic systems, remain challenging. Here, we report an assembly strategy for MHRs with programmable magnetization profiles and geometries, constructed from discrete integration of magnetized hydrogels and a patterned elastomer membrane based on covalent crosslinking. The resulting robots exhibit sophisticated deformations under varying magnetic fields, enabling effective carrying and delivery of solid drugs. Moreover, the proposed fabrication method preserves the highly porous and hydrophilic microstructures of the hydrogels, facilitating loading, adhesion, and transport of liquid drugs in combination with magnetic properties. Besides, integrating ultrathin and multifunctional microfabricated electronics into the MHRs is also achieved for physiological sensing and simulation, which has negligible effects on their intrinsic mechanics and deformability. The introduction of these magnetic materials and fabrication methods can shed new insights for the development of advanced biomedical tools and robotic systems.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"87 ","pages":"Pages 66-76"},"PeriodicalIF":21.1,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254420","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

Adaptively-generated multivalent active sites suppress destructive phase transition in high-nickel layered oxide cathodes 自适应生成的多价活性位点抑制高镍层状氧化物阴极的破坏性相变

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-05-16 DOI: 10.1016/j.mattod.2025.05.016

Yi Li , Xiaolin Zhao , Qinwen Cui , Yaxin Huang , Youwei Wang , Erhong Song , Zhengyang Zhou , Yong Yang , Jianjun Liu

{"title":"Adaptively-generated multivalent active sites suppress destructive phase transition in high-nickel layered oxide cathodes","authors":"Yi Li , Xiaolin Zhao , Qinwen Cui , Yaxin Huang , Youwei Wang , Erhong Song , Zhengyang Zhou , Yong Yang , Jianjun Liu","doi":"10.1016/j.mattod.2025.05.016","DOIUrl":"10.1016/j.mattod.2025.05.016","url":null,"abstract":"<div><div>Phase stability of high-nickel layered materials is crucial for enhancing the cyclic performance of lithium-ion batteries. The successive phase transition, accompanied by lattice contraction and stretching in high-nickel cathodes, results in continuous accumulation of lattice strain and structural destruction. Here, we propose a novel approach of adaptively-generated multivalent transition metal disordering to inhibit the destructive phase transitions in layered materials. To demonstrate feasibility, we design a binary high-nickel cathode material, LiNi<sub>0.85</sub>Fe<sub>0.15</sub>O<sub>2</sub>(LNF8515), which utilizes the variable valence of Fe to prevent the successive phase transition through charge delocalization. Effective regulation of the redox mechanism of transition metals through potentiostatic control is essential to mitigate significant continuous phase changes resulting from polarization. In LNF8515, the absence of Li<sup>+</sup>/Ni<sup>2+</sup> anti-site defects enables the material to achieve an initial capacity of 217.8 mAh g<sup>−1</sup>. LNF8515 does not undergo continuous phase transition, resulting in improved cycling stability and reduced strain. In-situ XRD, grazing incident wide angle X-ray scattering and first-principles studies indicate that adaptively-generated multivalence of Fe<sup>2+</sup>, Fe<sup>3+</sup>, and Fe<sup>4+</sup> prevent charge localization, suppressing the continuum phase transition. This study paves a new avenue to improve the cyclic stability of high-nickel oxide cathodes.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"87 ","pages":"Pages 114-124"},"PeriodicalIF":21.1,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254436","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

Lymph node-targeted cyclosporine A alleviates myocarditis in lupus mice by inhibiting CD68 + macrophage-driven lymphangiogenesis 淋巴结靶向环孢素A通过抑制CD68 +巨噬细胞驱动的淋巴管生成来缓解狼疮小鼠心肌炎

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-05-16 DOI: 10.1016/j.mattod.2025.05.001

R. Ganugula , M. Arora , N.K. Nuthalapati , S. Pingali , M.N.V. Ravi Kumar

{"title":"Lymph node-targeted cyclosporine A alleviates myocarditis in lupus mice by inhibiting CD68 + macrophage-driven lymphangiogenesis","authors":"R. Ganugula , M. Arora , N.K. Nuthalapati , S. Pingali , M.N.V. Ravi Kumar","doi":"10.1016/j.mattod.2025.05.001","DOIUrl":"10.1016/j.mattod.2025.05.001","url":null,"abstract":"<div><div>Lupus myocarditis, a severe and often underdiagnosed complication of systemic lupus erythematosus (SLE), remains challenging to treat due to the complex inflammatory processes involved. While lymphangiogenesis has been implicated in lupus nephritis, its role in myocarditis is not well understood. This study investigates the potential of lymph node-targeted cyclosporine A (CsA) as a therapeutic approach for lupus myocarditis. Using a lupus mouse model, we explored the effects of localized immunosuppression through polymer nanoparticles designed to deliver CsA with lymph node-targeting functionality (P2Ns-GA-CsA), CsA without targeting (P2Ns-CsA), and a commercial CsA formulation as controls. Our results demonstrate that P2Ns-GA-CsA significantly alleviates inflammation in lupus myocarditis, as evidenced by a reduction in macrophage infiltration (CD68 + cells) and lower levels of pro-inflammatory cytokines. Histological analysis revealed improvements in cardiac function and a decrease in myocardial fibrosis. Moreover, P2Ns-GA-CsA inhibited pathological lymphangiogenesis by downregulating VEGF-C and VEGFR3 expression, restoring lymphatic vessel density. Additionally, treatment enhanced PGC1α signaling, improving metabolic regulation and further suppressing inflammation. This study highlights the involvement of inflammation-driven lymphangiogenesis in lupus myocarditis and demonstrates that P2Ns-GA-CsA provides superior anti-inflammatory, cardioprotective, and anti-lymphangiogenic effects. These findings suggest that targeted immunosuppressive therapies could offer a promising strategy for managing cardiovascular complications in lupus.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"87 ","pages":"Pages 49-65"},"PeriodicalIF":21.1,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254608","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 rigid-flexible gel interlayer with Li+-conducting/e−-insulating properties for dendrite-free solid-state lithium metal batteries 一种用于无枝晶固态锂金属电池的具有Li+导电/e−绝缘性能的刚柔凝胶夹层

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-05-16 DOI: 10.1016/j.mattod.2025.05.011

Lei Zhang , Ning Wang , Jianxing Wang , Yuzhen Dang , Runguo Zheng , Zhiyuan Wang , Jiangmin Jiang , Yanhua Cui , Yongmin Wu , Hongyu Sun , Quanchao Zhuang , Yanguo Liu , Xueliang Sun

{"title":"A rigid-flexible gel interlayer with Li+-conducting/e−-insulating properties for dendrite-free solid-state lithium metal batteries","authors":"Lei Zhang , Ning Wang , Jianxing Wang , Yuzhen Dang , Runguo Zheng , Zhiyuan Wang , Jiangmin Jiang , Yanhua Cui , Yongmin Wu , Hongyu Sun , Quanchao Zhuang , Yanguo Liu , Xueliang Sun","doi":"10.1016/j.mattod.2025.05.011","DOIUrl":"10.1016/j.mattod.2025.05.011","url":null,"abstract":"<div><div>Solid-state lithium metal batteries (SSLMBs) have garnered significant attention due to their high energy density. However, the development of these batteries is hindered by the problematic growth of lithium dendrites, posing safety concerns. This study addresses this issue by introducing an organic–inorganic gel interlayer (GI) between garnet-type Li<sub>6.4</sub>La<sub>3</sub>Zr<sub>1.4</sub>Ta<sub>0.6</sub>O<sub>12</sub> (LLZTO) and Li metal using a simple, cost-effective, and scalable in-situ thermal polymerization method. The GI features a three-dimensional cross-linked network and LLZTO particles, enhancing interfacial ionic contact and facilitating Li<sup>+</sup> migration and diffusion at the interface. The electron-insulating nature of the GI prevents the growth of Li dendrites toward solid-state electrolytes and accommodates changes in Li volume during the plating and stripping process. Additionally, the electrochemical cycling forms a LiF-rich interphase, promoting uniform Li deposition. Consequently, Li symmetric cells exhibit a high critical current density of 1.9 mA cm<sup>−2</sup> and an extended cycling life of 600 h at 1.5 mA cm<sup>−2</sup>. SSLMBs, when coupled with LiFePO<sub>4</sub>, LiNi<sub>0.5</sub>Co<sub>0.2</sub>Mn<sub>0.3</sub>O<sub>2</sub>, and carbon fluoride (CF) cathodes, showcase outstanding electrochemical performance. The insights gained into interface properties and the demonstrated facile strategy in this work have the potential to accelerate the development of artificial interlayers for SSLMBs, ultimately leading to batteries with superior electrochemical performance.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"87 ","pages":"Pages 77-89"},"PeriodicalIF":21.1,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254422","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

Self-Powered Implantable and Ingestible Devices: Harvesting Energy Within the Body 自供电的可植入和可摄取装置：在体内收集能量

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-05-15 DOI: 10.1016/j.mattod.2025.05.006

Nasim Golafshan , Santanu Patra , Nghia Dinh Huynh , Nikolaj Gadegaard , Anja Boisen

{"title":"Self-Powered Implantable and Ingestible Devices: Harvesting Energy Within the Body","authors":"Nasim Golafshan , Santanu Patra , Nghia Dinh Huynh , Nikolaj Gadegaard , Anja Boisen","doi":"10.1016/j.mattod.2025.05.006","DOIUrl":"10.1016/j.mattod.2025.05.006","url":null,"abstract":"<div><div>Energy harvesting inside the body opens new research area into self-powered implantable and ingestible devices. These technologies are gaining attention as alternatives to batteries, offering lower health risks. In this review, we discuss the most important characteristics for the implantable and ingestible devices such as miniaturization, biocompatibility and efficiency in relation to their <em>in vivo</em> applications. We analyzed how energy can be harvested within the body using internally triggered mechanisms like mechanical, thermal, and biochemical energy harvesting approaches. In each section, a general overview of the fundamentals of the energy harvesters was introduced followed by the applications of the energy harvesters in implantable and ingestible devices. It also discusses how these energy sources can power implantable and ingestible devices. While promising, current energy harvesting technologies face significant challenges and limitations that must be addressed before these devices can be clinically applied. Lastly, key challenges and potential solutions are discussed from both clinical and practical perspectives.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"87 ","pages":"Pages 403-421"},"PeriodicalIF":21.1,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254259","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

Implantable and wearable triboelectric nanogenerators as a novel platform for biomedical antibacterial applications 植入式和可穿戴摩擦电纳米发电机作为生物医学抗菌应用的新平台

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-05-13 DOI: 10.1016/j.mattod.2025.05.005

Jingjing Wang , Xiancun Meng , Li Fu , Jiaxin Ding , Junxuan Li , Lin Wang , Yanmin Zhou , Shichao Niu

{"title":"Implantable and wearable triboelectric nanogenerators as a novel platform for biomedical antibacterial applications","authors":"Jingjing Wang , Xiancun Meng , Li Fu , Jiaxin Ding , Junxuan Li , Lin Wang , Yanmin Zhou , Shichao Niu","doi":"10.1016/j.mattod.2025.05.005","DOIUrl":"10.1016/j.mattod.2025.05.005","url":null,"abstract":"<div><div>Bacterial infections and antibiotic resistance pose escalating threats to global public health. Consequently, there is a critical need for novel antibacterial strategies and materials that circumvent bacterial resistance. Among emerging solutions, triboelectric nanogenerators (TENGs) have attracted significant attention as a promising physical antibacterial technology due to their efficient self-powered capability, flexible design, and broad applicability. Despite significant progress in applying TENG-based electrical stimulation (ES) in antibacterial applications, challenges persist in fully understanding its antibacterial mechanisms and enhancing its efficiency. This review comprehensively presents the latest advancements in implantable and wearable TENGs for biomedical antibacterial applications. It examines the antibacterial mechanisms of TENG-based ES, summarizes current strategies for enhancing the antibacterial performance of TENGs through integration with other technologies, and explores their applications in wound healing, deep tissue and implant-associated infections, wearable electronic devices, and personal protective equipment. Finally, the review highlights the key challenges in biomedical antibacterial applications and discusses potential solutions, offering valuable insights for future development and innovation.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"87 ","pages":"Pages 378-402"},"PeriodicalIF":21.1,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254372","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

Bioinspired artificial phototaxis and phototropism enabled by photoresponsive smart materials 由光响应智能材料实现的仿生人工趋光性和光性

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-05-13 DOI: 10.1016/j.mattod.2025.05.004

Xiao Yang , Yuanhao Chen , Faxin Wang , Sensheng Chen , Zhilong Cao , Yufan Feng , Ling Wang , Wei Feng

{"title":"Bioinspired artificial phototaxis and phototropism enabled by photoresponsive smart materials","authors":"Xiao Yang , Yuanhao Chen , Faxin Wang , Sensheng Chen , Zhilong Cao , Yufan Feng , Ling Wang , Wei Feng","doi":"10.1016/j.mattod.2025.05.004","DOIUrl":"10.1016/j.mattod.2025.05.004","url":null,"abstract":"<div><div>Some living organisms exhibit unique phototaxis and phototropism capabilities that demonstrate intelligent self-regulation through feedback mechanisms arising from their dynamic interactions with sunlight. Taking advantage of emerging photoresponsive smart materials capable of converting light energy into autonomous movement, researchers have been committed to developing bioinspired artificial phototaxis and phototropism with their potential applications, which have influenced various research fields ranging from materials science to chemistry, physics, engineering, medicine, and biology. This review systematically summarizes recent progress in bioinspired artificial phototaxis and phototropism enabled by diverse photoresponsive smart materials, detailing the phototactic behaviors of micro/nanomotors, liquid droplets, and soft robotics. The fundamental design principles and driving mechanisms behind them are elucidated in detail. Existing challenges and future development perspectives are also discussed. It is anticipated that this up-to-date review will provide a comprehensive overview of artificial phototaxis and phototropism to inspire further research into the construction, functionalization, and practical application of innovative systems with intelligent phototaxis and phototropism across a broad horizon.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"87 ","pages":"Pages 348-377"},"PeriodicalIF":21.1,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254443","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

The advances on scaling-up of photocatalytic and photoelectrochemical hydrogen production and field demonstration 光催化、光电化学制氢规模化及现场示范研究进展

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-05-12 DOI: 10.1016/j.mattod.2025.05.003

Xinxin Lu , Jiale Ye , Wenguang Tu , Zebiao Li , Shiyao Cao , Shan Yu , Ying Zhou , Hangzhou Wang

{"title":"The advances on scaling-up of photocatalytic and photoelectrochemical hydrogen production and field demonstration","authors":"Xinxin Lu , Jiale Ye , Wenguang Tu , Zebiao Li , Shiyao Cao , Shan Yu , Ying Zhou , Hangzhou Wang","doi":"10.1016/j.mattod.2025.05.003","DOIUrl":"10.1016/j.mattod.2025.05.003","url":null,"abstract":"<div><div>In the global pursuit of sustainable energy solutions, solar-driven water splitting for hydrogen production has emerged as a promising approach and attracted substantial attention, owing to its potential for clean and renewable energy resource. Photocatalytic and photoelectrochemical (PEC) water splitting are two pivotal strategies that have shown remarkable progress in laboratory research. Nonetheless, transitioning from lab-scale breakthroughs to large-scale deployment remains a formidable challenge, with a complex array of technical and engineering issues. This review aims to provide an overview of the current state-of-the-art progress in scaling up photocatalytic and PEC-based hydrogen production systems, with particular emphasis on field demonstration efforts. More importantly, to understand the critical challenges associated with scaling up these technologies will give insights into the strategies essential for overcoming these obstacles during this transition. By summarizing the successes and the impediments encountered during the scaling-up and field demonstration phases, this review contributes to the broader understanding of the journey towards large-scale implementation of solar-driven water splitting for sustainable hydrogen production.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"87 ","pages":"Pages 329-347"},"PeriodicalIF":21.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254255","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

Defect-induced enhanced Raman scattering of two-dimensional materials 二维材料缺陷诱导的增强拉曼散射

IF 21.1 1区材料科学

Materials Today Pub Date : 2025-05-12 DOI: 10.1016/j.mattod.2025.04.013

Hanyuan Ma , Lingxiao Yu , Ruitao Lv

{"title":"Defect-induced enhanced Raman scattering of two-dimensional materials","authors":"Hanyuan Ma , Lingxiao Yu , Ruitao Lv","doi":"10.1016/j.mattod.2025.04.013","DOIUrl":"10.1016/j.mattod.2025.04.013","url":null,"abstract":"<div><div>Two-dimensional (2D) materials have emerged as compelling candidates for noble-metal-free surface-enhanced Raman scattering (SERS) substrates due to their atomic-scale thickness, tunable electronic properties, superior optical characteristics, and biocompatibility. While noble metal substrates rely on the electromagnetic mechanism (EM), defect engineering of 2D materials offers a transformative strategy to amplify their molecular sensing capabilities through the chemical mechanism (CM). This review article introduces defect-induced enhanced Raman scattering (DiERS) as a novel paradigm, where engineered defects in 2D materials—such as vacancies, dopants, grain boundaries, and heterostructures—precisely regulate charge transfer processes and molecular interactions. We systematically analyze defect generation methods across graphene and transition metal dichalcogenides (TMDCs), emphasizing scalable synthesis techniques (e.g., CVD, plasma etching) and advanced characterization tools (STEM, STM, CAFM) for atomic-level defect visualization. The core mechanisms of DiERS are elucidated through two critical pathways: (1) light-matter interactions, where defects modulate band structures to enhance resonant charge transfer, and (2) defect-matter interactions, involving defect-mediated adsorption and dipole effects that amplify molecular polarization. Furthermore, we highlight the potential applications of DiERS in ultrasensitive detection of environmental toxins (e.g., heavy metal ions, dyes), food contaminants (pesticides, additives), and biomedical diagnostics (neurotransmitters, viral proteins), achieving detection limits as low as 10<sup>-18</sup> M. Challenges and future directions—including large-scale defect uniformity, standardized quantification protocols, and AI-driven spectral analysis—are discussed to advance DiERS toward next-generation molecular diagnostics and industrial scalability.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"87 ","pages":"Pages 287-303"},"PeriodicalIF":21.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254444","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