{"title":"Miniaturizing Laser-Induced Graphene for Biosensors by Spatial Control of Initiation and Side-Selective Microfabrication on Commercial Polymers (Adv. Mater. Technol. 7/2026)","authors":"Soumalya Ghosh, Mirza Sahaluddin, Moataz Abdulhafez, May Yoon Pwint, Xinyan Tracy Cui, Mostafa Bedewy","doi":"10.1002/admt.70845","DOIUrl":"https://doi.org/10.1002/admt.70845","url":null,"abstract":"<p><b>Laser-Induced Graphene</b></p><p>The cover image highlights the fabrication of miniaturized laser-induced graphene (LIG) for flexible microelectrode arrays, where focused laser irradiation transforms polymers into conductive graphene patterns. The resulting electrodes are capable of electrochemical sensing of neurotransmitters such as dopamine, illustrating the integration of laser nanomanufacturing, flexible bioelectronics, and high-sensitivity neurochemical detection. More details can be found in the Research Article by Mostafa Bedewy and co-workers (10.1002/admt.202502433).\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"11 7","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/admt.70845","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147714957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hydrogel-Based Functional Materials: Classifications, Properties, and Applications","authors":"Zeyu Zhang, Zao Cheng, Patrizio Raffa","doi":"10.1002/admt.202502505","DOIUrl":"https://doi.org/10.1002/admt.202502505","url":null,"abstract":"<p>Hydrogel-based conductive materials have garnered increasing attention in the field of smart wearable devices due to their excellent flexibility, multifunctionality, and biocompatibility. This review provides a comprehensive overview of recent advancements in the development of functional conductive hydrogels. The discussion begins with key design strategies, including the rational selection of monomer systems and conductive components that form the structural and functional basis of these materials. This is followed by an in-depth examination of their multifunctional properties, such as mechanical toughness, autonomous self-healing, anti-swelling behavior, intrinsic adhesion, environmental responsiveness, and recyclability. The broad and expanding range of applications is then explored, spanning flexible wearable electronics, underwater communication, and energy-efficient smart windows, highlighting their potential in future soft electronic systems. Finally, the remaining challenges in achieving true multifunctionality and durability are addressed, along with recommendations and perspectives to guide future research directions.</p>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"11 7","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/admt.202502505","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147715095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Toward 4R Electronics: Liquid-Metal-Enabled Thin Film, and Field-Effect Transistors for Sustainability and E-Waste Reduction","authors":"Elahe Parvini, Abdollah Hajalilou","doi":"10.1002/admt.202502412","DOIUrl":"https://doi.org/10.1002/admt.202502412","url":null,"abstract":"<div>\u0000 \u0000 <p>The rapid generation of electronic waste (e-waste) underscores the urgent need for device technologies that are designed with circularity and sustainability in mind. Conventional field-effect transistors (FETs), dominated by rigid silicon and oxide semiconductors, have fueled decades of technological progress but remain inherently brittle, inflexible, and difficult to recycle. These limitations hinder their integration into emerging fields such as soft robotics, wearable systems, and bioelectronics, while contributing substantially to the global e-waste burden. Gallium-based liquid metals (LMs) have recently emerged as transformative building blocks for next-generation FETs, combining metallic conductivity, fluidic deformability, room-temperature processability, and recyclability. Their multifunctional nature enables their deployment as electrodes, interconnects, dielectrics, and even semiconducting components, while their fluidity imparts self-healing, reconfigurable, and repairable features. This review examines the transition from solid-state to LM-enabled FETs, emphasizing strategies in structural engineering, intrinsically stretchable materials, and LM-based composites that merge electronic performance with mechanical adaptability. Special focus is placed on the 4R framework—resilient operation, repairability, recyclability, and renewable design principles—as pathways to advance sustainable transistor technologies and mitigate e-waste. By uniting high performance with adaptability and closed-loop reusability, LM-enabled transistors represent a paradigm shift toward 4R electronics for a sustainable future.</p>\u0000 </div>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"11 7","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147715049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hydrogel Confinement Strategies for 3D Cell Culture in Microfluidic Systems","authors":"Soohyun Kim, Min Seok Lee, Sung Kyun Lee","doi":"10.1002/admt.202501909","DOIUrl":"https://doi.org/10.1002/admt.202501909","url":null,"abstract":"<p>3D hydrogel-based cell culture systems are widely used to replicate native tissue microenvironments and study multicellular responses. In particular, microfluidic devices incorporating spatially confined hydrogel regions enable precise compartmentalization, dynamic perfusion, and multiplexed assay configurations. To achieve stable hydrogel localization within open channel networks, diverse confinement strategies have been developed, including micropillar arrays, capillary pinning via phaseguides, stepped-height structures, porous membrane integration, and support-free methods based on surface tension or sacrificial barriers. These designs allow open access to adjacent culture compartments, facilitating coculture and interface-specific cellular interactions. This review categorizes hydrogel confinement strategies by structural principles and evaluates their advantages and limitations regarding geometric flexibility, ease of fabrication, and biological functionality. In addition, the fabrication methods used to implement these structures are discussed in detail, covering photolithography, 3D printing, micromilling for mold-based soft lithography, and direct thermoforming of thermoplastic substrates. Representative commercial platforms are also introduced to demonstrate practical implementations. By integrating insights from structural design and manufacturing perspectives, this review provides a comprehensive guide for researchers to select or engineer 3D hydrogel culture chips tailored to diverse experimental demands in biomedical research and organ-on-a-chip applications.</p>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"11 7","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/admt.202501909","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147715296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Chip-Integrated Gas Sensors with Tunable Diode Laser Absorption Spectroscopy","authors":"Changlong Du, Xingyu Liu, Qiyue Lang, Siyu Liu, Chenghao Li, Zunyue Zhang, Jiaqi Wang, Tiegen Liu, Zhenzhou Cheng","doi":"10.1002/admt.202501609","DOIUrl":"https://doi.org/10.1002/admt.202501609","url":null,"abstract":"<p>Optical gas sensors utilizing tunable diode laser absorption spectroscopy (TDLAS) have been a prominent research focus over the past decades because of their significant potential for detecting toxic and flammable gases, monitoring greenhouse gases, and diagnosing diseases. Among current optical sensing platforms, photonic chips are particularly promising due to their ability to integrate multiple optical functions onto a single chip using CMOS-compatible fabrication. Furthermore, many integrated optical materials, such as silicon, silicon nitride, and chalcogenide glass, can be extended to the mid-infrared band, facilitating the development of sensitive volatile organic compounds (VOCs) fingerprint sensors. In the past decade, tremendous novel gas sensing techniques of chip-integrated gas sensors with TDLAS have emerged quickly, driven by enormous demands from the internet of things, wearable devices, and point-of-care diagnosis. In this paper, basic knowledge, state-of-the-art techniques, and cutting-edge applications of chip-integrated gas sensors are comprehensively reviewed with TDLAS, and their prospects. It is hoped that this review can serve as a helpful reference for researchers in fields of gas sensing, laser spectroscopy, integrated optics, and their applications.</p>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"11 7","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147715177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maheswari Arunachalam, Kwang-Soon Ahn, Kai Zhu, Soon Hyung Kang
{"title":"Advancing Photo(Electro)Chemical Water Splitting: The Promise of Atomically Dispersed Single-, Dual-, and Alloy-Site Catalysts","authors":"Maheswari Arunachalam, Kwang-Soon Ahn, Kai Zhu, Soon Hyung Kang","doi":"10.1002/admt.202500926","DOIUrl":"https://doi.org/10.1002/admt.202500926","url":null,"abstract":"<div>\u0000 \u0000 <p>Single-atom catalysts (SACs) have rapidly gained prominence as an emerging class of electrocatalysts for water splitting, owing to their uniform and precisely defined active sites. By maintaining uniform reaction pathways, SACs minimize the formation of unwanted byproducts, thus exhibiting extremely high selectivity and atomic efficiency. A key determinant of SAC performance lies in the interfacial interaction between the isolated metal atoms and the supporting material under strong metal–support coordination, which is vital for maintaining long-term activity. However, despite these benefits, reproducibly synthesizing SACs with high metal loadings while retaining uniform dispersion remains a significant challenge. To address the intrinsic challenges of SACs, recent research has expanded into dual-atom catalysts (DACs) and single-atom alloy catalysts (SAACs), providing synergistic active sites and combining the benefits of SACs with bimetallic systems. This review systematically explores the latest advancements in synthesis methods and innovations for SACs for electrochemical water splitting. Additionally, it examines the evolution of catalyst design, emphasizing the unique structural and electronic characteristics of single-site, dual-site, and alloyed SAC systems and highlighting their critical roles in accelerating water-splitting reaction kinetics as well as the prevailing challenges and outlining promising directions for advancing hydrogen production via water electrolysis.</p>\u0000 </div>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"11 7","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147715232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hao Zhao, Xieli Zhang, Wasid Ullah Khan, Marcin Karbarz, Qiang Zhang
{"title":"Research Progress in Electrochemical Sweat Sensors Driven by Advanced Materials and Structural Design for Health Monitoring","authors":"Hao Zhao, Xieli Zhang, Wasid Ullah Khan, Marcin Karbarz, Qiang Zhang","doi":"10.1002/admt.202502468","DOIUrl":"https://doi.org/10.1002/admt.202502468","url":null,"abstract":"<div>\u0000 \u0000 <p>With rapid progress in skin-interfaced sensing and microfluidic sampling, sweat sensors have emerged as promising platforms for non - invasive physiological monitoring. This review traces the evolution of sweat analysis and provides a mechanism-driven overview of electrochemical sweat sensors, covering signal transduction principles, materials and interface engineering, and system-level integration from sweat sampling to electrical readout. We particularly emphasize how functional materials—ranging from fabrication electrodes, interfaces, and carrier materials—govern sensitivity, selectivity, stability, and wearable robustness. We summarize recent advances across representative material classes and device architectures. Despite encouraging proof-of-concept demonstrations, large-scale translation remains challenging due to reliable sweat sampling and standardization, sensor drift and biofouling, manufacturing complexity and cost, and limited clinical validation. Integrated low-power sensing systems combined with self-powered strategies and data-driven analytics may accelerate the deployment of sweat-based monitoring in digital health applications.</p>\u0000 </div>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"11 7","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147715298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Revolutionary Optical Imaging Enabled by Vectorial and Flat Optics","authors":"Yinghui Guo, Mingbo Pu, Mingfeng Xu, Fei Zhang, Xiaoyin Li, Xiong Li, Xiaoliang Ma, Xiangang Luo","doi":"10.1002/admt.202502338","DOIUrl":"https://doi.org/10.1002/admt.202502338","url":null,"abstract":"<div>\u0000 \u0000 <p>Revolutionary optical imaging enabled by vectorial and flat optics marks a transformative paradigm that unites subwavelength photonic engineering, full-vector light-field control (amplitude, phase, and polarization), and planar optical architectures. Conventional imaging systems, constrained by curved-optics geometry and scalar diffraction theory, face intrinsic trade-offs among spatial resolution, field of view (FOV), and system compactness. By harnessing flat optical elements such as metasurfaces and catenary-phase devices together with vectorial manipulation, this emerging field transcends those limitations. The review highlights three fundamental breakthroughs: (1) Abrupt phase shifts in subwavelength scale enabling ultrathin, wide-FOV planar imaging; (2) Evanescent–propagating wave conversion under appropriate near-field coupling conditions, and vectorial optical synthetic apertures achieving far-field super-resolution beyond the diffraction limit; (3) Computational optics that integrates sensing and computing in a unified physical platform. These advances enable intelligent, programmable imaging systems that transcend the limitations of traditional optics, with applications spanning biomedical nanoscopy, remote sensing, and quantum information.</p>\u0000 </div>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"11 7","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147715281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rongrong Gong, Yi Chen, Minseong Kim, Mitch Guijun Li
{"title":"Direct Laser Writing of Functional Materials for Wearable Human-Machine Interaction: Mechanisms, Materials, and Applications","authors":"Rongrong Gong, Yi Chen, Minseong Kim, Mitch Guijun Li","doi":"10.1002/admt.202501560","DOIUrl":"https://doi.org/10.1002/admt.202501560","url":null,"abstract":"<div>\u0000 \u0000 <p>Direct laser writing (DLW) uses tightly confined laser beams to trigger photothermal, photochemical, and ultrafast photophysical processes. It enables mask-free, sub-micrometer patterning of functional materials on diverse substrates under ambient conditions. Wide material compatibility, fine feature control, and low heat input make DLW attractive for wearable human-machine interaction (HMI). These systems are soft, skin-conformal devices that monitor physiological and environmental signals in real time. This review surveys DLW-derived materials and architectures for wearable HMI devices. It provides a system-level perspective and highlights manufacturing-structure-property-performance relationships that guide the design of DLW-enabled wearables. We first outline the main laser-material interaction mechanisms, then classify DLW-derived materials into six families: carbon-based frameworks, metals and alloys, metal oxides, polymers and composites, 2D materials, and hybrids. For each family, we link manufacturing routes, microstructures, key properties, and device performance. Next, we map these materials onto five building blocks of wearable platforms: sensors, energy modules, communication components, feedback interfaces, and fully integrated systems. We cover mechanical, pressure, strain, humidity, temperature, gas, optical, biochemical, and multimodal sensors. Performance is benchmarked in terms of sensitivity, detection limit and range, response and recovery time, and stability under realistic deformation and wear. Finally, we discuss remaining challenges and future directions. Key issues include throughput and scalability, mechanical durability, biocompatibility, and standards for long-term reliability. We highlight emerging strategies such as multi-beam and roll-to-roll DLW, hybrid workflows with printing and 3D structuring, sustainable precursors and advanced nanocomposites, and AI-guided design and process control. Together, these directions aim to accelerate DLW-enabled wearables from laboratory prototypes to everyday wearable HMI systems.</p>\u0000 </div>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"11 7","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147715050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Colloidal Wet Coating Techniques of Two-Dimensional Materials","authors":"Kyeonghun Jeong, Dongwook Lee","doi":"10.1002/admt.202501805","DOIUrl":"https://doi.org/10.1002/admt.202501805","url":null,"abstract":"<div>\u0000 \u0000 <p>Two-dimensional (2D) materials such as graphene, transition metal dichalcogenides (TMDCs), and MXenes exhibit unique physicochemical properties due to atomic-scale thickness and structural anisotropy. To integrate these materials into functional devices, wet-coating techniques have emerged as scalable, cost-effective strategies for assembling uniform 2D films from colloidal dispersions. This review categorizes major wet-coating techniques, including Langmuir-Blodgett (LB) assembly, layer-by-layer (LbL) assembly, spin-coating, dropcasting, spray coating, and recently developed rapid drying protocols, according to their driving mechanisms and process characteristics. Key interfacial interactions and deposition parameters are discussed to elucidate film formation and failure modes. Functional demonstrations across electronics, membranes, and energy devices are reviewed to illustrate the practical utility of these methods. The review concludes with an outlook on such technologies for industrial scalability. This framework aims to guide the rational selection and optimization of wet-coating methods for diverse applications in optoelectronics, membranes, and energy devices built on 2D materials.</p>\u0000 </div>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"11 6","pages":""},"PeriodicalIF":6.4,"publicationDate":"2026-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}