{"title":"Atomistic Insights into Gradient Architecture Driven Strengthening in Additively Manufactured Cu–Ni Stepwise Graded Structures","authors":"Rohit Singh, Jinoop Arackal Narayanan","doi":"10.1002/admi.70675","DOIUrl":"https://doi.org/10.1002/admi.70675","url":null,"abstract":"<p>In this study, Molecular Dynamics (MD) simulations are employed to compare the mechanical behavior of additively manufactured Cu-Ni Functionally Graded Materials (FGMs) as a function of the functional gradient design. Two gradient architectures, a stepwise graded architecture and a layer-by-layer gradient, are explicitly modeled to analyze their influence on deformation and strengthening mechanisms. The stepwise graded architecture exhibits approximately 30% higher tensile strength compared to the alternate-layer deposition approach. This improvement is attributed to repeated thermal cycling during layer deposition, which enhances atomic diffusion and promotes more uniform Ni redistribution across layers. Radial Distribution Function (RDF) analysis confirms atomic-scale mobility at interlayer interfaces, leading to improved metallurgical bonding. Layer-specific tensile simulations reveal that increasing Ni content progressively enhances tensile strength, reaching a maximum of approximately 900 MPa, accompanied by reduced ductility, consistent with experimental trends. Dislocation analysis identifies the formation of sessile dislocations, including stair-rod, hirth, and Frank dislocations, whose increased density with higher Ni content restricts atomic mobility and contributes to strengthening. The present work provides a comparative and qualitative atomistic analysis of gradient architecture effects and offers mechanistic insights into strengthening behavior.</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 20","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.70675","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258042","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}
Bruno Ferreira Brischi, Gabriela Frajtag, João Pedro da Silva Mariano, Laís Fernanda Medeiros Ruela, Gustavo Duarte Verçosa, Camila Desiderio Fernandes, Murilo Santhiago, Letícia Mariê Minatogau Ferro, Leandro Merces
{"title":"Molybdenum Disulfide Bilayers Hybridized With Reduced Graphene Oxide Nanosheets for Enhanced Hydrogen Evolution Reaction (Adv. Mater. Interfaces 20/2026)","authors":"Bruno Ferreira Brischi, Gabriela Frajtag, João Pedro da Silva Mariano, Laís Fernanda Medeiros Ruela, Gustavo Duarte Verçosa, Camila Desiderio Fernandes, Murilo Santhiago, Letícia Mariê Minatogau Ferro, Leandro Merces","doi":"10.1002/admi.70677","DOIUrl":"https://doi.org/10.1002/admi.70677","url":null,"abstract":"<p><b>Hydrogen Evolution</b></p><p>Seven looks captivating. There are the Seven Wonders of the World, seven colors in the rainbow, seven days a week, and seven swans a-swimming, among many others. In the Research Article (DOI: 10.1002/admi.70639), Leandro Merces and co-workers just unveiled a very special one: 2D material hybrids with a 7-atom thickness, displaying outstanding properties for hydrogen evolution and expanding opportunities for future strain-, twist-, and defect-engineering.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 20","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.70677","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258739","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":"MXene-Based Electrocatalysts for Sustainable Nitrogen Conversion: From Ammonia Oxidation to Nitrogen and Nitrate Reduction","authors":"Afaf Salah Eid, Alaa M. Ibrahim, Soon Hyung Kang","doi":"10.1002/admi.70704","DOIUrl":"https://doi.org/10.1002/admi.70704","url":null,"abstract":"<p>2D transition-metal carbides and nitrides, known as MXenes, have emerged as promising electrocatalysts for nitrogen-related reactions, including ammonia oxidation (AOR), nitrogen reduction (NRR), and nitrate reduction (NO<sub>3</sub>RR). Their appeal stems from a layered architecture, abundant active sites, tunable surface chemistry, and high electrical conductivity. Key physicochemical properties—including controllable surface terminations (–O, –OH, –F), defect-rich surfaces, and flexible electronic structures—facilitate intermediate adsorption and activation while enhancing charge-transfer kinetics. Recent synthesis methods, such as HF etching and fluorine-free Lewis acid approaches, enable precise control over functionalities that dictate catalytic performance. Furthermore, engineering strategies like heteroatom doping, defect engineering, and hybrid composite formation are explored to optimize activity, selectivity, and durability. Ti<sub>3</sub>C<sub>2</sub>T<sub>X</sub> remains the most extensively studied platform due to its versatility and performance. This review provides a comprehensive overview of advancements in MXene-based catalysts for NO<sub>3</sub>RR, NRR, and AOR, highlighting the relationships between reaction mechanisms, electronic structures, and synthesis strategies. Finally, current challenges and future perspectives for the rational design of efficient, scalable, and sustainable MXene catalysts for nitrogen-related energy applications are discussed.</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 20","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.70704","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258025","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":"On-Skin Wireless Vibratory Interfaces by Stretchable Multilayer Circuits","authors":"Jiawei Liu, Yanfeng Hou, Shengkang Fu, Maoxin Yang, Hongbiao Sun, Yi Huang, ZhiBo Wang, Xiqiang Luo, Chengliang Tao, Qing Tang, Jiangxin Wang","doi":"10.1002/admi.70679","DOIUrl":"https://doi.org/10.1002/admi.70679","url":null,"abstract":"<p>Emerging technologies in soft electronics are facilitating seamless interactions with the human body's neural network. Among various sensory modalities, vibratory stimulation offers distinct advantages as a feedback strategy in wearable and implantable systems. However, existing devices face challenges of limited battery life, noncompliant device architecture, and complicated circuit designs, particularly for devices requiring adaptive fitting to various curved surfaces of the human body. In this study, we present a wireless and stretchable electronic device with multilayer circuits using elastic and printable metallic inks. The wireless vibratory interfaces were designed with a compact and soft circuit, which directly converts electromagnetic power to produce vibrotactile stimulation. Patterns of the mechanical vibration were highly programmable by frequency-shift keying (FSK) modulation of the input signals. The wireless and soft vibratory interfaces have excellent mechanical compliance, maintaining their functionalities under large deformations. Together with a fabric signal transmitter fabricated from elastic conductive fibers, we demonstrate a smart and interactive on-skin device, which translates spatial information into perceptible tactile cues to navigate visually impaired users through unstructured environments. The developed device holds significant promise for applications in sensory substitution, human-machine interfaces, and biomedical treatments.</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 20","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.70679","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259059","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}
Sang-Mi Jeong, Hee Sung Seo, Taekyung Lim, Jonguk Yang, Sanghyun Ju
{"title":"Photothermal Heat Spreading for Uniform Pixel Activation in NIR Laser-Driven Thermochromic Liquid Crystal Displays","authors":"Sang-Mi Jeong, Hee Sung Seo, Taekyung Lim, Jonguk Yang, Sanghyun Ju","doi":"10.1002/admi.70680","DOIUrl":"https://doi.org/10.1002/admi.70680","url":null,"abstract":"<p>In this study, a pixelated full-color display based on a near-infrared (NIR) laser-driven thermochromic liquid crystal (TLC) was developed. TLCs exhibit temperature-dependent colors through Bragg reflection induced by variations in the helical pitch of their cholesteric structure. However, a Gaussian temperature distribution originating from the heating center causes color nonuniformity within the activated region (rainbow effect), while lateral heat diffusion to adjacent regions limits the realization of pixelated displays. To address these challenges, a pixelated multilayer structure (TLC/Graphite/Al/PDMS/Glass) was fabricated by integrating a graphite layer for NIR photothermal conversion with an Al thin film serving as an in-plane heat spreader. The pixel size and spacing were optimized to achieve RGB color separation, visual color distinguishability, and thermal isolation. As a result, red (∼27°C), green (∼29°C), and blue (∼31°C) colors were clearly generated without mutual interference, enabling the reproduction of complex full-color images. The proposed TLC-based photothermally driven display enables full-color image generation via non-contact optical actuation, eliminating the need for electrical wiring and demonstrating potential for next-generation form-factor display applications, including smart windows, anti-counterfeiting tags, and wearable devices.</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 20","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.70680","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259083","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":"Deep Eutectic Solvent-Enhanced PEDOT: PSS/NR Foam Piezoresistive Sensor for High-Sensitivity Wearable Devices and Sleep Monitoring Applications","authors":"Shun Zhang, Jizu Ma, Peng Yu, Lei Tan, Yan Xu","doi":"10.1002/admi.70669","DOIUrl":"https://doi.org/10.1002/admi.70669","url":null,"abstract":"<p>The increasing demand for human motion monitoring draws significant attention to high-sensitivity wearable devices. Conductive polymer PEDOT: PSS has been widely utilized in wearable sensors. However, the presence of PSS has a significant impact on the electrical conductivity and sensitivity of these sensors. To address this, a high-performance DES/PEDOT: PSS/NR foam piezoresistive sensor is developed by rationally composing natural rubber latex, PEDOT: PSS, and a deep eutectic solvent (DES). As a cost-effective and biocompatible solvent, DES interacts strongly with PEDOT: PSS, inducing the microscopic detachment of PSS from PEDOT and increasing contact opportunities for conductive PEDOT. Through these interactions, the electrical conductivity of the foam sensor is enhanced by nearly 3.9 times, while its sensitivity is improved by approximately 4.5 times. The as-prepared foam possesses excellent mechanical properties, including superior flexibility and elasticity. Furthermore, the synergistic effect of DES and PEDOT: PSS enables the foam sensor to have a wide response range (0–180 kPa), high sensitivity (11.18 kPa<sup>−1</sup>), rapid response (57 ms), and recovery time (55 ms). The sensor effectively monitors various human activities and joint movements. It detects subtle movements, such as breathing, and performs exceptionally well in sleep monitoring. In summary, the prepared DES/PEDOT: PSS/NR foam sensor shows great potential in wearable devices and beyond.</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 19","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.70669","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125737","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}
Wencke Krings, Stanislav N. Gorb, Ellen Schulz-Kornas
{"title":"Dental Microwear Texture Analysis on Radular Teeth","authors":"Wencke Krings, Stanislav N. Gorb, Ellen Schulz-Kornas","doi":"10.1002/admi.70665","DOIUrl":"https://doi.org/10.1002/admi.70665","url":null,"abstract":"<p>Dental wear is a well-established proxy for inferring diet, habitat, and climatic conditions in vertebrate ecology, yet its proxy potential in invertebrates remains unexplored. Here, we introduce confocal disc-scanning microscopy–based 3D surface texture analysis combined with dental microwear texture analysis as a quantitative approach for assessing wear in the radular teeth of the gastropod <i>Vittina turrita</i>. Controlled feeding experiments exposed snails to substrates simulating biofilm-feeding conditions. Fine and superfine substrates produced uniform material loss, reflected by reduced surface mean height (<i>Sa</i>) and increased surface peak density (<i>Spd</i>), indicating consistent abrasion accompanied by extensive surface fragmentation. In contrast, coarser substrates resulted in fewer but more severe tooth–substrate interactions, generating irregular material loss marked by fractures, partial spalling, and crack formation. These damage modes were captured by increased <i>Sa</i>, reduced <i>Spd</i>, and elevated void volume of valleys (<i>Vvv</i>). Wear severity was greatest in older teeth, where erosion of the calcium-rich protective coating exposed the chitinous core; here, elevated <i>Sa</i> values likely resulted from fiber-scale failure during substrate impacts. The results show that wear reflects substrate interactions and material structural responses, providing a first controlled calibration step toward its future use as a proxy for substrate interaction and ecology.</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 19","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.70665","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125809","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}
Pan Wu, Kanghao Xie, Jiajie Qi, Xiaorui Zheng, Kaihui Liu, Xuedong Bai, Li Wang
{"title":"Controlled Growth of Boron Nitride in Various Phases","authors":"Pan Wu, Kanghao Xie, Jiajie Qi, Xiaorui Zheng, Kaihui Liu, Xuedong Bai, Li Wang","doi":"10.1002/admi.202600008","DOIUrl":"https://doi.org/10.1002/admi.202600008","url":null,"abstract":"<p>Boron nitride (BN) exists in multiple structural phases, including hexagonal (hBN), rhombohedral (rBN), cubic (cBN), and amorphous (aBN), each characterized by distinct sp<sup>2</sup> or sp<sup>3</sup> bonding configurations, stacking periodicities, and thermodynamic stabilities. These structural variations yield exceptional electronic, optical, and mechanical properties while imposing rigorous thermodynamic and kinetic constraints on their targeted synthesis. This review comprehensively summarizes recent progress in the phase-selective growth of BN. For the sp<sup>2</sup>-hybridized phases, precise management of adatom surface diffusion and edge-attachment kinetics, coupled with substrate symmetry breaking, has enabled the aligned coalescence of hBN islands into wafer-scale single crystals and the templated stabilization of rBN with exclusive ABC stacking. For sp<sup>3</sup>-bonded cBN, overcoming the massive energetic barrier of this metastable phase requires either extreme high-pressure high-temperature thermodynamic driving forces or localized energetic ion activation combined with strain-absorbing, lattice-matched templates. For aBN, low-temperature deposition routes effectively quench adatom mobility, kinetically trapping species into conformal, ultrathin disordered networks prioritized for advanced dielectric integration. Emerging research must address the thermodynamic limitations of scalable reactors, the atomic-level control of point defects, and the perfection of translational registry at interfaces to fully translate laboratory-quality BN into reliable technological applications.</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 19","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.202600008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125837","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}
Ridha Zerdoumi, Felix Thelen, Quentin Bizot, Aleksander Kostka, Rico Zehl, Florian Lourens, Yanyan Liang, Matous Mrovec, Ralf Drautz, Wolfgang Schuhmann, Alfred Ludwig
{"title":"Surface Segregation in Compositionally Complex Ag-Au-Pd-Pt Solid Solutions: Insights From High-Throughput Experimentation and Atomistic Simulations","authors":"Ridha Zerdoumi, Felix Thelen, Quentin Bizot, Aleksander Kostka, Rico Zehl, Florian Lourens, Yanyan Liang, Matous Mrovec, Ralf Drautz, Wolfgang Schuhmann, Alfred Ludwig","doi":"10.1002/admi.70660","DOIUrl":"https://doi.org/10.1002/admi.70660","url":null,"abstract":"<p>The activity of compositionally complex electrocatalysts depends on their surface composition, which can be different from the volume composition. In solid solutions, surface segregation under vacuum can be estimated based on the surface energy of the constituent elements. Upon exposure to ambient conditions, the surface reactivity of the elements, particularly their tendency to oxidize, is also important. Here, we investigate differences between the surface and volume composition of a model noble metal system, Ag-Au-Pd-Pt, fabricated by co-sputter deposition in the form of thin-film materials libraries (MLs), spanning a compositional range of Ag<sub>12-55</sub>Au<sub>7-50</sub>Pd<sub>6-60</sub>Pt<sub>7-58.</sub> The volume compositions of 684 measurement areas of these libraries were determined with energy dispersive X-ray spectroscopy (EDX). For each library, a set of nine selected areas was additionally measured by X-ray photoelectron spectroscopy (XPS), to determine the surface compositions, i.e., the first few nanometers of the films. The XPS data reveal near-surface segregation of Ag up to 8 at.% and Pt depletion of similar magnitude. The results were further validated by large-scale molecular dynamics/Monte-Carlo simulations using accurate machine learning interatomic potentials (MLIP), providing theoretical insights of surface segregation under vacuum conditions across the quaternary composition space.</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 19","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.70660","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125843","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":"A Single-Solvent Acetone Strategy for Surface Enhancement and Robust Bonding in PMMA Microfluidic Devices","authors":"Sadık Koç, H. Cumhur Tekin","doi":"10.1002/admi.70613","DOIUrl":"https://doi.org/10.1002/admi.70613","url":null,"abstract":"<p>Microfluidic technologies enable portable, low-volume, and cost-effective diagnostic platforms, yet their widespread adoption remains limited by fabrication complexity and reliance on cleanroom infrastructure. Polymethyl methacrylate (PMMA) is an attractive material due to its optical transparency, biocompatibility, and affordability; however, conventional fabrication methods such as laser engraving and micromilling often induce surface roughness and defects that compromise device performance. Here, we present a single-solvent strategy that utilizes pure acetone as both a surface enhancement and bonding agent for laser-ablated PMMA. Controlled acetone treatment combined with thermal conditioning transforms rough, damaged channel surfaces into smooth, optically clear interfaces. Subsequent acetone-assisted bonding enables the formation of uniform, high-strength interfaces without additional reagents or complex processing steps. The resulting microfluidic channels exhibit surface properties comparable to bulk PMMA and achieve bonding strengths up to ∼27.3 MPa, approaching the intrinsic tensile strength of the material. The method supports channel dimensions as small as 88 µm × 132 µm and demonstrates excellent mechanical stability under high centrifugal forces with reliable sealing performance. This approach provides a rapid, scalable, and cost-effective route for fabricating high-performance PMMA microfluidic devices, substantially lowering barriers to broader adoption.</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 19","pages":""},"PeriodicalIF":4.5,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.70613","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125840","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}