Advanced Functional Materials最新文献_第10页

Biomimetic Grooved Spinneret Enables High‐Performance Regenerated Silk Fibers Surpassing Natural Silkworm Silk 仿生开槽喷丝器使高性能再生丝纤维超越天然蚕丝

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-07-11 DOI: 10.1002/adfm.202513610

Lulu Tian, Ziyu Shao, Nifang Zhao, Mingrui Wu, Weiwei Gao, Hao Bai

{"title":"Biomimetic Grooved Spinneret Enables High‐Performance Regenerated Silk Fibers Surpassing Natural Silkworm Silk","authors":"Lulu Tian, Ziyu Shao, Nifang Zhao, Mingrui Wu, Weiwei Gao, Hao Bai","doi":"10.1002/adfm.202513610","DOIUrl":"https://doi.org/10.1002/adfm.202513610","url":null,"abstract":"Natural silk fibers, particularly silkworm and spider silks, demonstrate remarkable strength and toughness, yet face limited applications attributed to their non‐uniform mechanical properties. Regenerated silk fibers (RSFs), uniformly produced by artificial spinning, thus hold potential as alternatives to natural silks. However, the mechanical properties of RSFs are often inferior to natural silks due to the challenge of replicating their hierarchical nanofibril structure. Here, a grooved spinneret, inspired by the structural features of a spider's spinneret, is demonstrated to greatly enhance the shear force in the wet spinning process, which effectively increases the pre‐assembly of regenerated silk proteins and therefore improves both the content and alignment of β‐sheets within the silk. Consequently, the biomimetic RSFs (BRSFs) exhibit a hierarchical nanofibril structure akin to that of natural silkworm silk, yielding a tensile strength of 558.1 ± 25.2 MPa, even surpassing silkworm silk (439.2 ± 68.9 MPa). Significantly, the toughness of the BRSFs reaches 103.7 ± 20.9 MJ m−3, nearly three times that of silkworm silk (37.5 ± 7.1 MJ m−3). This work provides a facile and effective biomimetic approach for producing strong and tough RSFs, with the potential to upcycle silk waste into high‐value products, showing substantial environmental and economic advantages for sustainability.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"44 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603452","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

Electrically Binary and Ternary Convertible CMOS Inverter and Logic Gate Using Complementary Field‐Effect Transistors Based on Vertically Stacked MoS2/WSe2 n‐/p‐ Field‐Effect Transistors 基于垂直堆叠MoS2/WSe2 n /p场效应晶体管的互补场效应晶体管的电二、三元可转换CMOS逆变器和逻辑门

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-07-11 DOI: 10.1002/adfm.202510164

Changwook Lee, Dongyoung Kim, Eunyeong Yang, Jiwon Ma, Kibum Kang, Jiwon Chang

{"title":"Electrically Binary and Ternary Convertible CMOS Inverter and Logic Gate Using Complementary Field‐Effect Transistors Based on Vertically Stacked MoS2/WSe2 n‐/p‐ Field‐Effect Transistors","authors":"Changwook Lee, Dongyoung Kim, Eunyeong Yang, Jiwon Ma, Kibum Kang, Jiwon Chang","doi":"10.1002/adfm.202510164","DOIUrl":"https://doi.org/10.1002/adfm.202510164","url":null,"abstract":"In this work, electrically binary and ternary reconfigurable complementary metal‐oxide‐semiconductor (T‐CMOS) inverter that achieves stable multivalued logic (MVL) is presented. The device is realized through vertical integration of chemical vapor deposition‐grown MoS2 n‐channel and WSe2 p‐channel metal‐oxide‐semiconductor field‐effect transistors (MOSFETs) in a complementary FETs (CFETs) configuration, combined with a gate‐tunable MoS₂ resistive element that enables a well‐defined intermediate logic state via constant‐current operation. The unique combination of vertically stacked 2D MOSFETs and an electrically tunable resistive element allows for precise control over the voltage transfer characteristic and dynamic switching between binary and ternary modes. Furthermore, these T‐CMOS inverters are integrated in large‐scale to demonstrate ternary logic gates, including NAND (NMIN) and NOR (NMAX), thereby validating the scalability and potential for compact and energy‐efficient MVL circuits.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"22 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603542","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 Liquid Crystal Elastomer‐Based Reconfigurable Rigid Foldable Origami Enabled by Hybrid Surface‐Induced Alignment 基于可编程液晶弹性体的可重构刚性可折叠折纸，由混合表面诱导对齐实现

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-07-11 DOI: 10.1002/adfm.202513461

Zongxuan Wu, Wei Zhang, Wentao Xu, Quanming Chen, Mingxuan Liu, Yanjun Liu, Qingfeng Zhang, Wei Hu, Danqing Liu, Yan‐Qing Lu, Dan Luo

{"title":"Programmable Liquid Crystal Elastomer‐Based Reconfigurable Rigid Foldable Origami Enabled by Hybrid Surface‐Induced Alignment","authors":"Zongxuan Wu, Wei Zhang, Wentao Xu, Quanming Chen, Mingxuan Liu, Yanjun Liu, Qingfeng Zhang, Wei Hu, Danqing Liu, Yan‐Qing Lu, Dan Luo","doi":"10.1002/adfm.202513461","DOIUrl":"https://doi.org/10.1002/adfm.202513461","url":null,"abstract":"Rigid foldable origami, valued for its geometric programmability, load‐bearing capacity, and reconfigurability, is essential for applications in architecture, engineering, and biomedicine. Liquid crystal elastomer (LCE)‐based active origami offers reversible deformation, large actuation strain, and multi‐stimuli responsiveness but has been limited by alignment technology, hindering high‐resolution voxel‐to‐voxel alignment in 2D and vertical directions. Herein, a hybrid alignment strategy combining photoalignment and vertical polyimide (PI) alignment via a patterned mask is proposed, enabling precise molecular control in monolithic LCE films. This approach allows high‐resolution fabrication of voxel units in various forms, achieving precise control over folding patterns, curvature, angles, and kinetics. Several thermally and photo‐responsive LCE origamis in simulations and experiments are demonstrated, along with an LCE Miura‐ori‐based microwave metasurface that supports 46.8 times its weight and modulates microwave frequency and reflectance with 8.81 dB depth at 24.28 GHz. This strategy advances applications in biomimetic devices, deployable structures, and reconfigurable electromagnetic systems.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"47 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603336","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

Enabling Stable Zn Anodes Through Solvation and Interphase Regulation by Dual‐Functional Organic Additives 双功能有机添加剂通过溶剂化和界面调节实现稳定的锌阳极

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-07-11 DOI: 10.1002/adfm.202510936

Saba Hazoor, Yuan Tang, Ruihao Luo, Muhammad Sajid, Yahan Meng, Mohsin Ali, Nawab Ali Khan, Dongyang Shen, Touqeer Ahmad, Aoun Raza, Xingxing Li, Wei Chen

{"title":"Enabling Stable Zn Anodes Through Solvation and Interphase Regulation by Dual‐Functional Organic Additives","authors":"Saba Hazoor, Yuan Tang, Ruihao Luo, Muhammad Sajid, Yahan Meng, Mohsin Ali, Nawab Ali Khan, Dongyang Shen, Touqeer Ahmad, Aoun Raza, Xingxing Li, Wei Chen","doi":"10.1002/adfm.202510936","DOIUrl":"https://doi.org/10.1002/adfm.202510936","url":null,"abstract":"The stability of Zn anode in aqueous Zn‐ion batteries (AZIBs) is severely compromised by dendrite growth, side reactions, and hydrogen evolution reactions (HER), resulting in poor cycling performance and low Coulombic efficiency (CE). Herein, a dual‐functional organic additive (DFOA) is introduced in the electrolyte to simultaneously modulate Zn2+ solvation and Zn‐electrolyte interphase for high‐performance AZIBs. Spectroscopic analysis and density functional theory calculations reveal that succinic anhydride (SA), as a representative DFOA, weakens Zn2+–H2O interactions and strengthens Zn2+–succinate anion coordination by partially replacing H2O molecules in Zn2+ solvation shell, thereby reducing desolvation energy and suppressing HER and corrosion. Succinate anions derived from DFOA preferentially adsorb onto the Zn surface and promote the formation of a stable solid–electrolyte interphase (SEI). As a result, Zn||Zn symmetric cells exhibit prolonged cycling stability exceeding 7100 h at 1 mAh cm−2, while Zn||Cu asymmetric cells maintain highly stable plating/stripping with an excellent CE of 99.7% over 6300 cycles. Furthermore, the Zn||NH4V4O10 (NVO) full cells with DFOA demonstrate 99.9% average CE (ACE) and retain 86% of their capacity after 3000 cycles. This work identifies an effective and practical DFOA strategy for stabilizing Zn anodes, offering a viable route toward high‐performance and long‐life aqueous Zn‐ion batteries.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"740 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603339","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

Rational Manipulation of Fluorination Sites Enables 19.58% Efficiency Binary Organic Solar Cells with Optimized Energy Levels and Improved Charge Transfer 合理操纵氟化位点使19.58%的效率二元有机太阳能电池具有优化的能量水平和改进的电荷转移

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-07-11 DOI: 10.1002/adfm.202511914

Kaihuai Tu, Yao Chen, Tainan Duan, Shengnan Duan, Dingqin Hu, Lei Liu, Gengsui Tian, Teng Gu, Heng Liu, Xinhui Lu, Chaisa Uragami, Hideki Hashimoto, Peihao Huang, Zeyun Xiao

{"title":"Rational Manipulation of Fluorination Sites Enables 19.58% Efficiency Binary Organic Solar Cells with Optimized Energy Levels and Improved Charge Transfer","authors":"Kaihuai Tu, Yao Chen, Tainan Duan, Shengnan Duan, Dingqin Hu, Lei Liu, Gengsui Tian, Teng Gu, Heng Liu, Xinhui Lu, Chaisa Uragami, Hideki Hashimoto, Peihao Huang, Zeyun Xiao","doi":"10.1002/adfm.202511914","DOIUrl":"https://doi.org/10.1002/adfm.202511914","url":null,"abstract":"Recent advancements in organic solar cells (OSCs) have been driven by Y‐series acceptors and their derivatives. Investigations on the types/quantities of central halogen atoms and terminal halogen atoms sites have achieved significant progress. However, the influence of central halogen atomic sites on the photovoltaic performance of acceptors remain understudied. In this work, two asymmetric acceptors (CH‐o2F and CH‐m2F) with distinct central‐core fluorination substitution sites are rationally designed based on the structurally symmetric CH‐6F, employing density functional theory calculations and molecular dynamics simulations. The theoretical insights revealing better‐matched energy levels and the potential for improved molecular stacking motivated further experimental investigations. The upshift of lowest unoccupied molecular orbital and blue shift of ultraviolet absorption, leading to a higher open‐circuit voltage. The femtosecond transient absorption spectroscopy test shows that the faster exciton diffusion and dissociation in PM6:CH‐m2F film. Their good miscibility, enhanced charge mobility, and reduced recombination further contributed to increased fill factor and short‐circuit current density. The synergistic effect of energy level modulation and molecular stacking optimization achieved a boosted power conversion efficiency of 19.58% in binary OSCs. This study highlights the critical role of precise fluorination site manipulation in tuning optoelectronic properties and provides new opportunities for high efficiency OSCs materials.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"14 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603345","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

Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production 双金属纳米颗粒作为光催化制氢的助催化剂

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-07-11 DOI: 10.1002/adfm.202506279

Yufen Chen, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Jordi Llorca, Lluís Soler

引用次数: 0

Interlayer‐Crosslinkable Hole Transport Layer Achieved Highly Efficient and Stable Perovskite Solar Cells 层间-可交联空穴传输层实现高效稳定的钙钛矿太阳能电池

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-07-11 DOI: 10.1002/adfm.202510279

Zheng Wang, Jiakang Zhang, G. Krishnamurthy Grandhi, Muhua Zou, Paola Vivo, Zhongmin Zhou, Haichang Zhang

{"title":"Interlayer‐Crosslinkable Hole Transport Layer Achieved Highly Efficient and Stable Perovskite Solar Cells","authors":"Zheng Wang, Jiakang Zhang, G. Krishnamurthy Grandhi, Muhua Zou, Paola Vivo, Zhongmin Zhou, Haichang Zhang","doi":"10.1002/adfm.202510279","DOIUrl":"https://doi.org/10.1002/adfm.202510279","url":null,"abstract":"Dopant‐free small‐molecule hole‐transport materials (HTMs) in inverted perovskite solar cells often suffer from interfacial degradation during solution processing, which compromises charge extraction and device stability. Here, a reactive molecular engineering strategy is presented involving two concurrent reactions: i) radical polymerization of Apronal into a vertically distributed poly(Apronal) (P‐Apronal) network within the perovskite layer, and ii) interfacial thiourea formation via nucleophilic addition between primary amines of Apronal and isothiocyanate (‐NCS) groups in a newly designed HTM, CAZ‐NCS. The ‐NCS moieties, spatially confined within the HTL, undergo thiourea formation with Apronal's amine groups at the buried interface during spin‐coating and thermal annealing, while the vinyl groups of Apronal simultaneously polymerize into a vertically extended network. This chemically cohesive interface boosts both operational robustness and charge extraction. Devices incorporating CAZ‐NCS‐P achieve a power conversion efficiency of 23.52% and retain 94% of their initial performance after 600 h of continuous illumination (T80 = 1951 h). This self‐adaptive and spatially programmed interfacial crosslinking strategy offers a new paradigm for stabilizing buried interfaces in solution‐processed optoelectronic devices.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"12 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603443","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

DNA Nanotechnology‐Engineered Supramolecular Hydrogel Biosensor for Cancer Diagnosis via Extracellular Vesicles DNA纳米技术-通过细胞外囊泡进行癌症诊断的超分子水凝胶生物传感器

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-07-11 DOI: 10.1002/adfm.202512115

Jianpu Tang, Zhen Cui, Qian Li, Bin Ke, Peifeng Liu, Dayong Yang, Chi Yao

{"title":"DNA Nanotechnology‐Engineered Supramolecular Hydrogel Biosensor for Cancer Diagnosis via Extracellular Vesicles","authors":"Jianpu Tang, Zhen Cui, Qian Li, Bin Ke, Peifeng Liu, Dayong Yang, Chi Yao","doi":"10.1002/adfm.202512115","DOIUrl":"https://doi.org/10.1002/adfm.202512115","url":null,"abstract":"Cancer‐associated extracellular vesicles (EVs) are promising as liquid biopsy biomarkers for early cancer diagnosis to reduce cancer‐related mortality, yet their clinical utility remains hampered by cumbersome workflows and insufficient diagnostic accuracy. Herein, these limitations are addressed with a DNA nanotechnology‐engineered supramolecular hydrogel biosensor that integrates EV recognition, isolation, enrichment, and detection into a rapid assay (30 min vs hours for conventional methods). The biosensor leverages a sequence‐programmable DNA hydrogel matrix, constructed via gene‐like precision in supramolecular assembly, to spatially organize polyvalent aptamers for efficient EV capture. Crucially, the cancer‐associated miRNA‐21 and membrane protein epithelial cell adhesion molecule (EpCAM) synergistically trigger cascaded assembly of DNA probes, generating three‐color fluorescence signals for semi‐quantitative dual‐marker analysis. Remarkably, the biosensor demonstrates exceptional correlation with gold‐standard techniques methods, with Pearson's coefficients of 0.987 for miRNA‐21 and 0.999 for EpCAM. The dual‐marker approach minimizes false negatives and achieves 100% accuracy in distinguishing breast cancer patients from healthy donors in serum samples. By unifying molecular recognition, signal amplification, and multiplexed detection in a single material platform, this work advances EV‐based liquid biopsy through a chemistry‐driven design, offering a scalable, rapid, and ultrasensitive tool for early cancer diagnosis.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"22 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603444","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

Near‐Field Optical Detection of Defect‐Stabilized Metallic Islands at the Verwey Transition in Fe3O4 Fe3O4中Verwey跃迁缺陷稳定金属岛的近场光学检测

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-07-11 DOI: 10.1002/adfm.202507075

Kajal Tiwari, Mostafa Ibrahim Shehata Marzouk, Ke Xiao, Malleswararao Tangi, Stuart Stephen Papworth Parkin

{"title":"Near‐Field Optical Detection of Defect‐Stabilized Metallic Islands at the Verwey Transition in Fe3O4","authors":"Kajal Tiwari, Mostafa Ibrahim Shehata Marzouk, Ke Xiao, Malleswararao Tangi, Stuart Stephen Papworth Parkin","doi":"10.1002/adfm.202507075","DOIUrl":"https://doi.org/10.1002/adfm.202507075","url":null,"abstract":"Magnetite (Fe3O4) undergoes a metal‐to‐insulator transition (MIT) at the Verwey transition that is accompanied by significant structural distortions. This archetypical transition is extensively studied due to its highly correlated nature. Here, the formation of defect‐stabilized metallic islands is shown at the MIT that we directly image using high‐resolution scattering‐type scanning near‐field optical microscopy in the mid‐infrared (MIR) to terahertz (THz) spectral range. The transition to the insulating state on cooling is accompanied by the formation of remnant metallic islands just a few hundred nm in extent within less than 1 K of the MIT. Notably, these islands occur at similar places on repeated cooling cycles, suggesting the presence of pinning centers. Temperature‐dependent low‐frequency MIR and THz optical responses show a similarly sharp MIT, indicating a clear first‐order transition. On the other hand, as compared to the MIR signal, a reduction in the THz signal at temperatures above the MIT is indicative of short‐range ordering consistent with the formation of polarons. The findings highlight the importance of nanoscale optical imaging in understanding the electronic properties of strongly correlated materials.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"13 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603448","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

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials 通过层间成分调整单个粘土纳米片的介电性能：迈向纳米驻极体材料

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-07-11 DOI: 10.1002/adfm.202509093

Sebastian Gödrich, Paul Markus, Matthias Stöter, Bernhard Biersack, Rainer Schobert, Josef Breu, Georg Papastavrou

{"title":"Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials","authors":"Sebastian Gödrich, Paul Markus, Matthias Stöter, Bernhard Biersack, Rainer Schobert, Josef Breu, Georg Papastavrou","doi":"10.1002/adfm.202509093","DOIUrl":"https://doi.org/10.1002/adfm.202509093","url":null,"abstract":"To exploit the full potential of clays for electronic applications, a deeper understanding of how their dielectric properties can be tuned in a defined manner is essential. So far, most attention has been paid to the surface chemistry of clay platelets and their mechanical properties. Important properties, like electrical breakdown voltages, have been studied only on the macroscopic scale and not on the level of single platelets. One open important question that must be addressed is how far the dielectric properties, such as the breakdown characteristics, can be tuned by the composition of the interlayer. By using scanning probe techniques, it became possible to study individual platelets of the synthetic hectorite. Their interlayer composition is varied by encapsulating different cations between the silicate monolayers, besides sodium, ammonium, and an organic dye. The electrical breakdown characteristics of the monolayers and functional double stacks of hectorite are determined at the single platelet level. The use of these clay‐based materials as electrets is evaluated by creating defined charge patterns at the nm‐level and recording their isothermal potential decay. Thereby, the charge retention properties of the different clay compounds are determined.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"4 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603456","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