首页 > 最新文献

Advanced Functional Materials最新文献

英文 中文
Monolithic Integration of Printable PVDF-TrFE Piezoelectric Multifunctional Devices: From Sensing to Actuation 可印刷 PVDF-TrFE 压电多功能器件的单片集成:从传感到驱动
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-20 DOI: 10.1002/adfm.202413500
Yeji Lee, Vineeth Kumar Bandari, Varun Paul Paliakkara, Sheila Monteiro Augusto, Rico Ehrler, Olav Hellwig, Sebastian Amann, Klaus Stöwe, Robert Thalheim, Oliver G. Schmidt
This study demonstrates the development of multifunctional printable piezoelectric actuators using PVDF-TrFE and PEDOT:PSS, capable of operating at low voltages and supporting a wide range of applications. By leveraging the high piezoelectric coefficient of PVDF-TrFE and the conductivity of PEDOT:PSS, the actuators exhibit stable performance with precise inkjet printing deposition and optimized waveform parameters. The fabrication process integrates inkjet printing and standard lithography, enabling monolithic integration for high-performance actuation and multifunctional sensing. The PVDF-TrFE-based actuators achieve low-voltage operation (as low as 50 V), efficient energy transfer, and mechanical stability. Enhancing the beta phase of PVDF-TrFE resulted in a deflection of ≈600 µm and vortex generation, crucial for lift in aerial robotic applications. Durability tests confirmed minimal performance degradation after 2,300 actuation cycles. Beyond mechanical deflection, the actuators exhibit sound detection and strain sensing capabilities. Experimental evaluations validated their ability to differentiate sound frequencies, detect muscle strain, and replicate bio-inspired flight dynamics. A preliminary proof of concept for a double-wing structure demonstrated lift generation at low voltages and resonant frequencies. The results indicate that these piezoelectric actuators are well-suited for miniaturized robotic applications, particularly in aerial locomotion and multifunctional sensing, opening new possibilities for innovations in micro-robotics, wearables, and aerial robotics.
本研究展示了使用 PVDF-TrFE 和 PEDOT:PSS 开发的多功能可打印压电致动器,这种致动器能够在低电压下工作,支持广泛的应用。利用 PVDF-TrFE 的高压电系数和 PEDOT:PSS 的导电性,该致动器通过精确的喷墨打印沉积和优化的波形参数表现出稳定的性能。该制造工艺集成了喷墨打印和标准光刻技术,实现了高性能致动器和多功能传感的单片集成。基于 PVDF-TrFE 的致动器实现了低压工作(低至 50 V)、高效的能量传递和机械稳定性。通过增强 PVDF-TrFE 的β相,可产生≈600 µm 的挠度和涡流,这对空中机器人应用中的升力至关重要。耐久性测试表明,经过 2300 次致动循环后,性能下降幅度极小。除机械挠度外,致动器还具有声音检测和应变传感能力。实验评估验证了它们区分声音频率、检测肌肉应变和复制生物启发飞行动力学的能力。双翼结构的初步概念验证表明,在低电压和共振频率下可产生升力。研究结果表明,这些压电致动器非常适合微型机器人应用,特别是在空中运动和多功能传感方面,为微型机器人、可穿戴设备和空中机器人的创新开辟了新的可能性。
{"title":"Monolithic Integration of Printable PVDF-TrFE Piezoelectric Multifunctional Devices: From Sensing to Actuation","authors":"Yeji Lee, Vineeth Kumar Bandari, Varun Paul Paliakkara, Sheila Monteiro Augusto, Rico Ehrler, Olav Hellwig, Sebastian Amann, Klaus Stöwe, Robert Thalheim, Oliver G. Schmidt","doi":"10.1002/adfm.202413500","DOIUrl":"https://doi.org/10.1002/adfm.202413500","url":null,"abstract":"This study demonstrates the development of multifunctional printable piezoelectric actuators using PVDF-TrFE and PEDOT:PSS, capable of operating at low voltages and supporting a wide range of applications. By leveraging the high piezoelectric coefficient of PVDF-TrFE and the conductivity of PEDOT:PSS, the actuators exhibit stable performance with precise inkjet printing deposition and optimized waveform parameters. The fabrication process integrates inkjet printing and standard lithography, enabling monolithic integration for high-performance actuation and multifunctional sensing. The PVDF-TrFE-based actuators achieve low-voltage operation (as low as 50 V), efficient energy transfer, and mechanical stability. Enhancing the beta phase of PVDF-TrFE resulted in a deflection of ≈600 µm and vortex generation, crucial for lift in aerial robotic applications. Durability tests confirmed minimal performance degradation after 2,300 actuation cycles. Beyond mechanical deflection, the actuators exhibit sound detection and strain sensing capabilities. Experimental evaluations validated their ability to differentiate sound frequencies, detect muscle strain, and replicate bio-inspired flight dynamics. A preliminary proof of concept for a double-wing structure demonstrated lift generation at low voltages and resonant frequencies. The results indicate that these piezoelectric actuators are well-suited for miniaturized robotic applications, particularly in aerial locomotion and multifunctional sensing, opening new possibilities for innovations in micro-robotics, wearables, and aerial robotics.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"22 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678414","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
Enhanced Voltage-Controlled Magnetic Anisotropy and Field-Free Magnetization Switching Achieved with High Work Function and Opposite Spin Hall Angles in W/Pt/W SOT Tri-Layers 在 W/Pt/W SOT 三层膜中利用高功函数和相反自旋霍尔角实现增强型电压控制磁各向异性和无磁场磁化切换
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-20 DOI: 10.1002/adfm.202416570
Yu-Chia Chen, Qi Jia, Yifei Yang, Yu-Han Huang, Deyuan Lyu, Thomas J. Peterson, Jian-Ping Wang
Voltage-Gated Spin-Orbit-Torque (VGSOT) Magnetic Random-Access Memory (MRAM) is a promising candidate for reducing writing energy and improving writing speed in emerging memory and in-memory computing applications. However, conventional Voltage Controlled Magnetic Anisotropy (VCMA) approaches are often inefficient due to the low VCMA coefficient at the CoFeB/MgO interface. Additionally, traditional heavy metal/perpendicular magnetic anisotropy (PMA) ferromagnet bilayers require an external magnetic field to overcome symmetry constraints and achieve deterministic SOT switching. Here, a novel and industry-compatible SOT underlayer for next-generation VGSOT MRAM by employing a composite heavy metal tri-layer with a high work function is presented. This approach achieves a VCMA coefficient exceeding 100 fJ V−1m−1 through electron depletion effects, which is ten times larger than that observed with a pure W underlayer. Furthermore, it is demonstrated that this composite heavy metal SOT underlayer facilitates the integration of VCMA with opposite spin Hall angles, enabling field-free SOT switching in industry-compatible PMA CoFeB/MgO systems.
电压门控自旋轨道力矩(VGSOT)磁随机存取存储器(MRAM)是新兴存储器和内存计算应用中降低写入能耗和提高写入速度的理想选择。然而,由于 CoFeB/MgO 接口的压控磁各向异性 (VCMA) 系数较低,传统的压控磁各向异性 (VCMA) 方法往往效率不高。此外,传统的重金属/垂直磁各向异性(PMA)铁磁体双层膜需要外部磁场来克服对称性限制并实现确定性 SOT 开关。本文介绍了一种新颖且与工业兼容的 SOT 底层,该底层适用于下一代 VGSOT MRAM,采用了具有高功函数的复合重金属三层。这种方法通过电子耗尽效应实现了超过 100 fJ V-1m-1 的 VCMA 系数,是纯 W 底层的十倍。此外,研究还证明这种复合重金属 SOT 底层有助于集成具有相反自旋霍尔角的 VCMA,从而在工业兼容的 PMA CoFeB/MgO 系统中实现无场 SOT 开关。
{"title":"Enhanced Voltage-Controlled Magnetic Anisotropy and Field-Free Magnetization Switching Achieved with High Work Function and Opposite Spin Hall Angles in W/Pt/W SOT Tri-Layers","authors":"Yu-Chia Chen, Qi Jia, Yifei Yang, Yu-Han Huang, Deyuan Lyu, Thomas J. Peterson, Jian-Ping Wang","doi":"10.1002/adfm.202416570","DOIUrl":"https://doi.org/10.1002/adfm.202416570","url":null,"abstract":"Voltage-Gated Spin-Orbit-Torque (VGSOT) Magnetic Random-Access Memory (MRAM) is a promising candidate for reducing writing energy and improving writing speed in emerging memory and in-memory computing applications. However, conventional Voltage Controlled Magnetic Anisotropy (VCMA) approaches are often inefficient due to the low VCMA coefficient at the CoFeB/MgO interface. Additionally, traditional heavy metal/perpendicular magnetic anisotropy (PMA) ferromagnet bilayers require an external magnetic field to overcome symmetry constraints and achieve deterministic SOT switching. Here, a novel and industry-compatible SOT underlayer for next-generation VGSOT MRAM by employing a composite heavy metal tri-layer with a high work function is presented. This approach achieves a VCMA coefficient exceeding 100 fJ V<sup>−1</sup>m<sup>−1</sup> through electron depletion effects, which is ten times larger than that observed with a pure W underlayer. Furthermore, it is demonstrated that this composite heavy metal SOT underlayer facilitates the integration of VCMA with opposite spin Hall angles, enabling field-free SOT switching in industry-compatible PMA CoFeB/MgO systems.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"78 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678409","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
Biosensor-Based Microfluidic Platforms for Rapid Clinical Detection of Pathogenic Bacteria 基于生物传感器的微流控平台用于病原菌的快速临床检测
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-20 DOI: 10.1002/adfm.202411484
Ying Hou, Zhen Liu, Haina Huang, Chengming Lou, Zhiwei Sun, Xiaoyan Liu, Jinbo Pang, Shenguang Ge, Zenan Wang, Weijia Zhou, Hong Liu
Pathogenic bacteria are commonly found in food, water, and soil, posing significant public health challenges globally. Therefore, early, rapid, and highly sensitive strategies for monitoring the bacterial proliferation are crucial for ensuring public health, medical diagnosis, and food safety. Compared to traditional techniques, microfluidic platforms provide powerful detective tools characterized by high integration, high throughput, ease of operation, low reagent consumption, and high sensitivity. Driven by substantial commercial demand, research and development in microfluidic-based rapid detection methods and technologies has progressed significantly derived by the interdisciplinary integration of multiple disciplines. In this review, progress in clinical detection of pathogenic bacteria with microfluidic biosensors, including microfluidic devices for point-of-care (POC) testing, is summarized. Strategies for pathogenic bacteria detection, containing their advantages and disadvantages are discussed in detail. Advanced platforms for capturing and detecting pathogenic bacteria, such as microchannels, microarrays, digital microfluidics (DMF) and paper-based platforms, are highlighted. The accomplishments and shortcomings of these microfluidic devices are also summarized. Additionally, case studies of biosensor‑based microfluidic devices used for detecting diseases caused by bacterial imbalances are listed. Finally, possible research perspectives for further development in highly effective biosensor‑based microfluidics for clinical detection of pathogenic bacteria are proposed.
致病细菌通常存在于食物、水和土壤中,对全球公共卫生构成重大挑战。因此,早期、快速和高灵敏度的细菌扩散监测策略对于确保公共卫生、医疗诊断和食品安全至关重要。与传统技术相比,微流控平台提供了强大的检测工具,具有高集成度、高通量、易操作、低试剂消耗和高灵敏度等特点。在大量商业需求的推动下,基于微流控的快速检测方法和技术的研究与开发在多学科的交叉融合下取得了显著进展。本综述总结了利用微流体生物传感器(包括用于床旁检测(POC)的微流体设备)对致病菌进行临床检测的进展。详细讨论了病原菌检测策略及其优缺点。重点介绍了捕获和检测病原菌的先进平台,如微通道、微阵列、数字微流控(DMF)和纸质平台。还总结了这些微流控设备的成就和不足。此外,还列举了用于检测细菌失衡引起的疾病的基于生物传感器的微流控装置的案例研究。最后,提出了进一步开发基于生物传感器的高效微流控技术用于临床病原菌检测的可能研究前景。
{"title":"Biosensor-Based Microfluidic Platforms for Rapid Clinical Detection of Pathogenic Bacteria","authors":"Ying Hou, Zhen Liu, Haina Huang, Chengming Lou, Zhiwei Sun, Xiaoyan Liu, Jinbo Pang, Shenguang Ge, Zenan Wang, Weijia Zhou, Hong Liu","doi":"10.1002/adfm.202411484","DOIUrl":"https://doi.org/10.1002/adfm.202411484","url":null,"abstract":"Pathogenic bacteria are commonly found in food, water, and soil, posing significant public health challenges globally. Therefore, early, rapid, and highly sensitive strategies for monitoring the bacterial proliferation are crucial for ensuring public health, medical diagnosis, and food safety. Compared to traditional techniques, microfluidic platforms provide powerful detective tools characterized by high integration, high throughput, ease of operation, low reagent consumption, and high sensitivity. Driven by substantial commercial demand, research and development in microfluidic-based rapid detection methods and technologies has progressed significantly derived by the interdisciplinary integration of multiple disciplines. In this review, progress in clinical detection of pathogenic bacteria with microfluidic biosensors, including microfluidic devices for point-of-care (POC) testing, is summarized. Strategies for pathogenic bacteria detection, containing their advantages and disadvantages are discussed in detail. Advanced platforms for capturing and detecting pathogenic bacteria, such as microchannels, microarrays, digital microfluidics (DMF) and paper-based platforms, are highlighted. The accomplishments and shortcomings of these microfluidic devices are also summarized. Additionally, case studies of biosensor‑based microfluidic devices used for detecting diseases caused by bacterial imbalances are listed. Finally, possible research perspectives for further development in highly effective biosensor‑based microfluidics for clinical detection of pathogenic bacteria are proposed.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"60 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673682","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
4D Direct Laser Writing for Intelligent Micromachines 用于智能微型机械的 4D 直接激光写入技术
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-20 DOI: 10.1002/adfm.202414571
Linlin Wang, Huayang Sai, Yi-Yang Tang, Bin Li, Lei Wang, Yunyue Yang, Kai-Cheng Yang, Pengyu Lv, Huiling Duan, Tian-Yun Huang
Intelligent micromachines are devices with sizes ranging from submillimeters to nanometers, capable of performing complex tasks adaptively at small scales. Smart micromachines have recently been developed that exhibit shape-morphing capability in response to various stimuli to adapt to their environment. However, for such micromachines to be effective in harsh environments, micromachines should be more than adaptive. Essentially, they must exhibit a high degree of intelligence, characterized by enhanced locomotion capability, self-adaptability, programmability, reconfigurability, and multifunctionality. 4D direct laser writing has enabled the rapid prototyping of stimulus-responsive adaptive micromechanisms and diverse functional microcomponents, including microscale sensors, actuators, data processors, memory structures, and power-supply structures. This review provides a comprehensive overview of the current state of the art in 4D microprinting technology based on two-photon polymerization for the intelligentization of micromachines. Further, it offers insights into the fabrication of intelligent micromachines via the integration of diverse functional components through the 4D direct laser writing technology.
智能微型机械是一种尺寸从亚毫米到纳米不等的设备,能够在小尺度上自适应地执行复杂的任务。最近开发出的智能微型机械具有形状变形能力,能对各种刺激做出反应,以适应环境。然而,要使这类微型机械在恶劣的环境中发挥有效作用,微型机械不仅要具有适应能力,还必须具有很高的稳定性。从根本上说,它们必须表现出高度的智能性,其特点是具有更强的运动能力、自适应能力、可编程能力、可重新配置能力和多功能性。四维激光直接写入技术实现了刺激响应型自适应微机械和各种功能微部件的快速原型制作,包括微型传感器、致动器、数据处理器、存储器结构和电源结构。本综述全面概述了基于双光子聚合技术的 4D 微打印技术在实现微型机械智能化方面的最新进展。此外,它还对通过 4D 直接激光写入技术集成各种功能组件来制造智能微型机械提出了见解。
{"title":"4D Direct Laser Writing for Intelligent Micromachines","authors":"Linlin Wang, Huayang Sai, Yi-Yang Tang, Bin Li, Lei Wang, Yunyue Yang, Kai-Cheng Yang, Pengyu Lv, Huiling Duan, Tian-Yun Huang","doi":"10.1002/adfm.202414571","DOIUrl":"https://doi.org/10.1002/adfm.202414571","url":null,"abstract":"Intelligent micromachines are devices with sizes ranging from submillimeters to nanometers, capable of performing complex tasks adaptively at small scales. Smart micromachines have recently been developed that exhibit shape-morphing capability in response to various stimuli to adapt to their environment. However, for such micromachines to be effective in harsh environments, micromachines should be more than adaptive. Essentially, they must exhibit a high degree of intelligence, characterized by enhanced locomotion capability, self-adaptability, programmability, reconfigurability, and multifunctionality. 4D direct laser writing has enabled the rapid prototyping of stimulus-responsive adaptive micromechanisms and diverse functional microcomponents, including microscale sensors, actuators, data processors, memory structures, and power-supply structures. This review provides a comprehensive overview of the current state of the art in 4D microprinting technology based on two-photon polymerization for the intelligentization of micromachines. Further, it offers insights into the fabrication of intelligent micromachines via the integration of diverse functional components through the 4D direct laser writing technology.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"11 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673717","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
From Original Ferrocene-Based Small-Molecule Design to Multifunctional Supramolecular Bactericides: Their Efficient Applications in Controlling Biofilm-Associated Bacterial Infections 从基于二茂铁的原始小分子设计到多功能超分子杀菌剂:在控制生物膜相关细菌感染中的高效应用
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-20 DOI: 10.1002/adfm.202418415
Haicong Zhao, Xinyu He, Jinghan Yang, Min Liu, Xue Chen, Peiyi Wang
Conventional bactericides struggle with biofilm barriers and inefficient deposition on hydrophobic leaves, resulting in undesirable control of plant bacterial diseases. To overcome these challenges, an innovative ferrocene-based small-molecule (FccA8R) is conceived, featuring biofilm disruption capabilities. Further optimizing FccA8R with seven-membered oligosaccharide-involved host–guest supramolecular strategy creates two kinds of biocompatible multifunctional supramolecular nanospheres (FccA8R@β-CD and FccA8R@HP-β-CD). This manipulation efficiently eradicates mature biofilm barriers while enhancing droplet retention on hydrophobic leaves. At a concentration of 56.64 µg mL−1, the two materials remove Xanthomonas-biofilms by 76.32–76.83%, notably surpassing that of single FccA8R (57.96%). Their versatility extends to the enhanced inhibition of bacterial motility, extracellular enzymes secretion, and exopolysaccharides production, all reducing the bacterial virulence. In vivo pot experiments, FccA8R@β-CD and FccA8R@HP-β-CD demonstrate workable control efficacies of 48.91–52.03% against rice bacterial blight at 200 µg mL−1, superior to the commercial thiodiazole-copper-20%SC (36.42%) and FccA8R-0.1%Tween (39.54%). Furthermore, these supramolecular assemblies disclose broad-spectrum bactericidal efficacy (71.45–73.19%) against kiwifruit canker, significantly higher than thiodiazole-copper-20%SC (43.05%) and FccA8R-0.1%Tween (57.24%). Besides, supramolecular bactericides are safe for plants and non-target organisms like zebrafish and earthworms. Briefly, this research builds a key foundation for creating green bactericides from small-molecule conception to eco-friendly supramolecular assemblies, realizing the prevention of bacterial diseases and environmental safety.
传统的杀菌剂在生物膜障碍和疏水性叶片上的低效沉积方面举步维艰,导致对植物细菌病害的控制效果不理想。为了克服这些挑战,我们设想了一种创新的二茂铁基小分子(FccA8R),它具有破坏生物膜的能力。将 FccA8R 与七元寡糖参与的主客体超分子策略进一步优化,创造出两种生物相容性多功能超分子纳米球(FccA8R@β-CD 和 FccA8R@HP-β-CD)。这种操作方法能有效清除成熟的生物膜屏障,同时提高液滴在疏水叶片上的滞留率。在浓度为 56.64 µg mL-1 时,这两种材料对黄单胞菌生物膜的去除率为 76.32%-76.83%,明显超过了单一 FccA8R 的去除率(57.96%)。它们的多功能性还包括增强对细菌运动、胞外酶分泌和外多糖生成的抑制,所有这些都降低了细菌的毒力。在体内盆栽实验中,FccA8R@β-CD 和 FccA8R@HP-β-CD 在 200 µg mL-1 的剂量下对水稻细菌性枯萎病的防治效果为 48.91%-52.03%,优于商品化的硫唑-铜-20%SC(36.42%)和 FccA8R-0.1%Tween (39.54%)。此外,这些超分子组合物对猕猴桃腐烂病的广谱杀菌效力(71.45%-73.19%)显著高于硫唑-铜-20%SC(43.05%)和 FccA8R-0.1%Tween (57.24%)。此外,超分子杀菌剂对植物和斑马鱼、蚯蚓等非靶标生物都是安全的。简而言之,该研究为从小分子构想到生态友好型超分子组装物的绿色杀菌剂的研制奠定了重要基础,实现了细菌疾病防治和环境安全。
{"title":"From Original Ferrocene-Based Small-Molecule Design to Multifunctional Supramolecular Bactericides: Their Efficient Applications in Controlling Biofilm-Associated Bacterial Infections","authors":"Haicong Zhao, Xinyu He, Jinghan Yang, Min Liu, Xue Chen, Peiyi Wang","doi":"10.1002/adfm.202418415","DOIUrl":"https://doi.org/10.1002/adfm.202418415","url":null,"abstract":"Conventional bactericides struggle with biofilm barriers and inefficient deposition on hydrophobic leaves, resulting in undesirable control of plant bacterial diseases. To overcome these challenges, an innovative ferrocene-based small-molecule (FccA8R) is conceived, featuring biofilm disruption capabilities. Further optimizing FccA8R with seven-membered oligosaccharide-involved host–guest supramolecular strategy creates two kinds of biocompatible multifunctional supramolecular nanospheres (FccA8R@<i>β</i>-CD and FccA8R@HP-<i>β</i>-CD). This manipulation efficiently eradicates mature biofilm barriers while enhancing droplet retention on hydrophobic leaves. At a concentration of 56.64 µg mL<sup>−1</sup>, the two materials remove <i>Xanthomonas-</i>biofilms by 76.32–76.83%, notably surpassing that of single FccA8R (57.96%). Their versatility extends to the enhanced inhibition of bacterial motility, extracellular enzymes secretion, and exopolysaccharides production, all reducing the bacterial virulence. In vivo pot experiments, FccA8R@<i>β</i>-CD and FccA8R@HP-<i>β</i>-CD demonstrate workable control efficacies of 48.91–52.03% against rice bacterial blight at 200 µg mL<sup>−1</sup>, superior to the commercial thiodiazole-copper-20%SC (36.42%) and FccA8R-0.1%Tween (39.54%). Furthermore, these supramolecular assemblies disclose broad-spectrum bactericidal efficacy (71.45–73.19%) against kiwifruit canker, significantly higher than thiodiazole-copper-20%SC (43.05%) and FccA8R-0.1%Tween (57.24%). Besides, supramolecular bactericides are safe for plants and non-target organisms like zebrafish and earthworms. Briefly, this research builds a key foundation for creating green bactericides from small-molecule conception to eco-friendly supramolecular assemblies, realizing the prevention of bacterial diseases and environmental safety.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"170 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678412","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
High-Performance Ultrasensitive Flexible Piezoelectric Thin Film Sensors via a Cost-Effective Transfer Strategy 通过经济高效的转移策略实现高性能超灵敏柔性压电薄膜传感器
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-20 DOI: 10.1002/adfm.202414211
Qianqian Xu, Miao Jia, Peiqiong Zhou, Yan Zhang, Wei Guo, Senfeng Zhao, Hanmin Zeng, Jianxun Zhang, Mingyang Yan, Shumiao Jiang, Kechao Zhou, Dou Zhang, Chris Bowen
Currently, reported physical or chemical methods to produce flexible perovskite thin films rely on the use of expensive single crystal substrates or large-scale precision equipment. Here, a high-performance ultrasensitive piezoelectric sensor via a cost-effective strategy is developed to enable the release of lead zirconate titanate (PZT) thin films from an inexpensive mica substrate, which are subsequently transferred to a flexible polyethylene terephthalate substrate. The weak van der Waals interaction between the mica/La0.7Sr0.3MnO3 heterostructures minimizes mechanical clamping effects and provides favorable lattice and thermal matching conditions for the growth of high-quality thin films. The transferred thin films exhibit significantly improved mechanical and functional properties, including an outstanding piezoelectric response (474.2 pm V−1) and an excellent mechanical flexibility, with a bending radius up to 1 mm. The sensor formed via the new transfer strategy exhibits a highly sensitive response to wide-angle bending (110 mV degree−1) and small pressure changes (1.8 V kPa−1), and is successfully employed for real-time breathing monitoring and wireless gesture recognition, thereby demonstrating its significant potential in applications related to flexible electronics.
目前,所报道的生产柔性包晶体薄膜的物理或化学方法依赖于使用昂贵的单晶基底或大型精密设备。在这里,我们通过一种具有成本效益的策略开发了一种高性能超灵敏压电传感器,使锆钛酸铅(PZT)薄膜从廉价的云母基底上释放出来,然后将其转移到柔性聚对苯二甲酸乙二醇酯基底上。云母/La0.7Sr0.3MnO3 异质结构之间微弱的范德华相互作用将机械夹持效应降至最低,并为高质量薄膜的生长提供了有利的晶格和热匹配条件。转移薄膜的机械和功能特性得到了明显改善,包括出色的压电响应(474.2 pm V-1)和卓越的机械柔韧性,弯曲半径可达 1 毫米。通过新的转移策略形成的传感器对广角弯曲(110 mV degree-1)和微小压力变化(1.8 V kPa-1)具有高灵敏度响应,并成功用于实时呼吸监测和无线手势识别,从而证明了其在柔性电子相关应用中的巨大潜力。
{"title":"High-Performance Ultrasensitive Flexible Piezoelectric Thin Film Sensors via a Cost-Effective Transfer Strategy","authors":"Qianqian Xu, Miao Jia, Peiqiong Zhou, Yan Zhang, Wei Guo, Senfeng Zhao, Hanmin Zeng, Jianxun Zhang, Mingyang Yan, Shumiao Jiang, Kechao Zhou, Dou Zhang, Chris Bowen","doi":"10.1002/adfm.202414211","DOIUrl":"https://doi.org/10.1002/adfm.202414211","url":null,"abstract":"Currently, reported physical or chemical methods to produce flexible perovskite thin films rely on the use of expensive single crystal substrates or large-scale precision equipment. Here, a high-performance ultrasensitive piezoelectric sensor via a cost-effective strategy is developed to enable the release of lead zirconate titanate (PZT) thin films from an inexpensive mica substrate, which are subsequently transferred to a flexible polyethylene terephthalate substrate. The weak van der Waals interaction between the mica/La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> heterostructures minimizes mechanical clamping effects and provides favorable lattice and thermal matching conditions for the growth of high-quality thin films. The transferred thin films exhibit significantly improved mechanical and functional properties, including an outstanding piezoelectric response (474.2 pm V<sup>−1</sup>) and an excellent mechanical flexibility, with a bending radius up to 1 mm. The sensor formed via the new transfer strategy exhibits a highly sensitive response to wide-angle bending (110 mV degree<sup>−1</sup>) and small pressure changes (1.8 V kPa<sup>−1</sup>), and is successfully employed for real-time breathing monitoring and wireless gesture recognition, thereby demonstrating its significant potential in applications related to flexible electronics.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"14 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673685","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
Women in Renewable Energy 可再生能源领域的女性
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-20 DOI: 10.1002/adfm.202417502
Samrana Kazim, Thuc-Quyen Nguyen
<p>The demand for sustainable and renewable energy is increasing due to the depletion of fossil fuels and the global climate crisis. Thus, the need for affordable, clean, safe energy conversion and storage systems that are sustainable is vital and requires new approaches and disruptive technologies to contribute to global energy production. This inspires researchers and engineers from multidisciplinary research areas to discover novel materials for energy conversion and storage. Moreover, it is paramount to unveil their structure–property–performance relationship and fundamental processes of energy materials and devices.</p><p>This special issue on Women in Renewable Energy encompasses 3 reviews and 15 research articles on the most updated research progress in renewable energy conversion and storage areas conducted by leading female researchers globally. It covers a broad range of innovative functional materials discovery, synthetic methodologies, structure–property relationships, and their applications in organic solar cells, perovskite solar cells, rechargeable batteries, and capacitors.</p><p>For energy conversion, organic and perovskite solar cells (PSCs) are emerging photovoltaic (PV) technology that has advanced due to their tunable optoelectronic properties. These technologies are solution-processable and can be fabricated using cost-effective commercially available coating techniques representing a substantial benefit for lowering manufacturing costs. This emerging PV technology minimizes the levelized cost of electricity and energy payback time as compared to the silicon PV technology.<sup>[</sup><span><sup>2</sup></span><sup>]</sup> So far, halide PSCs have achieved a certified record power conversion efficiency<sup>[</sup><span><sup>1</sup></span><sup>]</sup> (PCE) of 26.7% for single-junction solar cells, while for single-junction organic solar cells (OSCs) reached 19.2%. In both types of solar cells, the exploration of new absorber and charge transport materials, new device designs, fabrication techniques is particularly relevant to improving the efficiency and stability of not only single-junction but also multi-junction tandem solar cells.</p><p>In high-efficiency tandem solar cells, wide-bandgap perovskites as the top cell are desirable, which requires a large amount of Br concentration in the composition of the perovskite to expand the bandgap; however, the photo instability and heterogeneous halide distribution are brought on by a rise in Br concentration. Nogueira et al. report that the addition of MACl destabilizes the intermediate phases and favors the formation of wide-bandgap perovskites with high crystallinity and homogenizes the distribution of halides, thus improving the performance of PSCs (2307104). Similarly, for low-bandgap perovskite, Petrozza et al. explore that alloying formamidinium lead iodide (FAPbI<sub>3</sub>) perovskite absorber with small amount of Br<sup>−</sup> anion increases the radiative recombinati
由于化石燃料的枯竭和全球气候危机,对可持续和可再生能源的需求与日俱增。因此,对经济、清洁、安全、可持续的能源转换和储存系统的需求至关重要,需要新的方法和颠覆性技术来促进全球能源生产。这激励着来自多学科研究领域的研究人员和工程师去发现用于能源转换和储存的新型材料。本特刊以 "女性在可再生能源领域 "为主题,收录了 3 篇综述和 15 篇研究文章,介绍了全球顶尖女性研究人员在可再生能源转换和储存领域取得的最新研究进展。在能源转换方面,有机太阳能电池和光致发光太阳能电池(PSCs)是新兴的光伏(PV)技术,因其可调的光电特性而得到发展。这些技术可进行溶液加工,并可使用具有成本效益的商用涂层技术进行制造,这对降低制造成本大有裨益。与硅光伏技术相比,这种新兴的光伏技术最大程度地降低了平准化电力成本,缩短了能源回收时间。[2] 到目前为止,卤化物 PSC 单结太阳能电池的功率转换效率[1] 已达到 26.7% 的认证记录,而单结有机太阳能电池(OSC)的功率转换效率则达到 19.2%。在这两种类型的太阳能电池中,探索新的吸收体和电荷传输材料、新的器件设计和制造技术对于提高单结串联太阳能电池和多结串联太阳能电池的效率和稳定性尤为重要。在高效串联太阳能电池中,希望使用宽带隙的包晶石作为顶层电池,这就需要在包晶石的成分中加入大量的溴浓度以扩大带隙;然而,溴浓度的增加会带来光不稳定性和卤化物的异质分布。Nogueira 等人报告说,添加 MACl 会破坏中间相的稳定性,有利于形成具有高结晶度的宽带隙包晶体,并使卤化物分布均匀,从而提高 PSC 的性能 (2307104)。同样,对于低带隙透辉石,Petrozza 等人研究发现,将碘化甲脒铅 (FAPbI3) 透辉石吸收体与少量溴阴离子合金化可提高辐射重组产率和半导体光稳定性,有利于光子学应用 (2308545)。为了进一步替代有毒的铅(Pb),Paola 等人综述了低维、宽带隙的透辉石启发材料,如卤化物elpasolite、空位有序双透辉石、基于pnictogen的金属卤化物、Ag-Bi-I 系列材料,以及它们在光伏领域内外的设备性能、Paola 等人回顾了这些材料在光伏领域内外的器件性能,以及它们的缺陷驱动光学和电荷载流子传输特性 (2307-441)。同样,Leppert、Hutter 等人报告说,Cs2AgBiBr6 包晶石的大带隙和间接带隙限制了其高效采光,而通过机械化学合成将 50% 的 Bi3+ 替换为 Fe3+,可将其从间接转变为直接转变,并在 2.通过密度泛函理论计算(2306106),可以观察到由于引入 Fe3+ 后导带降低,在 2.我们需要最大限度地减少重组损耗,并提高整体性能。减少肖克利-雷德-霍尔(Shockley-Read-Hall)和界面重组可大大提高开路电压(VOC)和填充因子(FF),使太阳能电池更接近理论上的肖克利-奎塞尔(Shockley-Queisser)极限。在一篇综述中,Kazim 等人展示了引入 MXenes 对太阳能电池和电池的益处。在太阳能电池中,MXenes 可以控制电荷传输界面和过氧化物晶粒的表面,从而提高 FF 和 Voc;而在电池中,MXenes 已被用作电极材料 (2315694)。同样,Loi 等人发现了一种由共价单层(Br-2PACz)和非共价润湿层(4CzNH3I)组成的自组装双层,作为铅/硒基 pi-n 太阳能电池的 HTL,以提高性能和稳定性(2306571)。
{"title":"Women in Renewable Energy","authors":"Samrana Kazim, Thuc-Quyen Nguyen","doi":"10.1002/adfm.202417502","DOIUrl":"https://doi.org/10.1002/adfm.202417502","url":null,"abstract":"&lt;p&gt;The demand for sustainable and renewable energy is increasing due to the depletion of fossil fuels and the global climate crisis. Thus, the need for affordable, clean, safe energy conversion and storage systems that are sustainable is vital and requires new approaches and disruptive technologies to contribute to global energy production. This inspires researchers and engineers from multidisciplinary research areas to discover novel materials for energy conversion and storage. Moreover, it is paramount to unveil their structure–property–performance relationship and fundamental processes of energy materials and devices.&lt;/p&gt;\u0000&lt;p&gt;This special issue on Women in Renewable Energy encompasses 3 reviews and 15 research articles on the most updated research progress in renewable energy conversion and storage areas conducted by leading female researchers globally. It covers a broad range of innovative functional materials discovery, synthetic methodologies, structure–property relationships, and their applications in organic solar cells, perovskite solar cells, rechargeable batteries, and capacitors.&lt;/p&gt;\u0000&lt;p&gt;For energy conversion, organic and perovskite solar cells (PSCs) are emerging photovoltaic (PV) technology that has advanced due to their tunable optoelectronic properties. These technologies are solution-processable and can be fabricated using cost-effective commercially available coating techniques representing a substantial benefit for lowering manufacturing costs. This emerging PV technology minimizes the levelized cost of electricity and energy payback time as compared to the silicon PV technology.&lt;sup&gt;[&lt;/sup&gt;&lt;span&gt;&lt;sup&gt;2&lt;/sup&gt;&lt;/span&gt;&lt;sup&gt;]&lt;/sup&gt; So far, halide PSCs have achieved a certified record power conversion efficiency&lt;sup&gt;[&lt;/sup&gt;&lt;span&gt;&lt;sup&gt;1&lt;/sup&gt;&lt;/span&gt;&lt;sup&gt;]&lt;/sup&gt; (PCE) of 26.7% for single-junction solar cells, while for single-junction organic solar cells (OSCs) reached 19.2%. In both types of solar cells, the exploration of new absorber and charge transport materials, new device designs, fabrication techniques is particularly relevant to improving the efficiency and stability of not only single-junction but also multi-junction tandem solar cells.&lt;/p&gt;\u0000&lt;p&gt;In high-efficiency tandem solar cells, wide-bandgap perovskites as the top cell are desirable, which requires a large amount of Br concentration in the composition of the perovskite to expand the bandgap; however, the photo instability and heterogeneous halide distribution are brought on by a rise in Br concentration. Nogueira et al. report that the addition of MACl destabilizes the intermediate phases and favors the formation of wide-bandgap perovskites with high crystallinity and homogenizes the distribution of halides, thus improving the performance of PSCs (2307104). Similarly, for low-bandgap perovskite, Petrozza et al. explore that alloying formamidinium lead iodide (FAPbI&lt;sub&gt;3&lt;/sub&gt;) perovskite absorber with small amount of Br&lt;sup&gt;−&lt;/sup&gt; anion increases the radiative recombinati","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"18 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673691","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
Multifunctional Molecule Passivated Quasi-2D Perovskite Film for Efficient and Stable Luminescent Solar Concentrator 用于高效稳定发光太阳能聚光器的多功能分子钝化准二维过氧化物薄膜
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-20 DOI: 10.1002/adfm.202413553
Mingze Sun, Ying Chen, Shubing Tian, Mingming Zhang, Haokun Jiang, Kang Liu, Jixiang Xu, Fangxu Dai, Lei Wang, Zhongmin Zhou, Jun Xing
Quasi−2D perovskite films with multiple quantum well structures can provide a large Stokes shift and efficient photoluminescence (PL), which have great potential in the application of luminescent solar concentrators (LSCs). However, its low photoelectric conversion efficiency and poor stability remain obstacles to commercial application. Here, a multifunctional molecule additive octyltriphenylphosphonium bromide is introduced to prepare high-quality perovskite LSCs. The multifunctional molecule can simultaneously passivate perovskite cations and anions, reducing the defect sites and improving the photoluminescence quantum yield (PLQY) of the perovskite nanocrystals. Triphenylphosphine groups with high steric hindrance effect can hinder ion migration; the hydrophobic properties of the long alkyl chain prevent water erosion, which together improves the stability of the perovskite films. The multifunctional molecule passivated perovskite film has a high PLQY of 100% and retains 96% of the initial PL intensity after 30 days of indoor storage. The perovskite LSC device achieves a maximum optical efficiency of 6.5% at a geometric factor of 3.1. The findings open a new way to boost the performance of perovskite-based LSCs.
具有多重量子阱结构的准二维过氧化物薄膜可提供较大的斯托克斯偏移和高效的光致发光(PL),在发光太阳能聚光器(LSCs)的应用中具有巨大潜力。然而,其较低的光电转换效率和较差的稳定性仍然是商业应用的障碍。本文引入了一种多功能分子添加剂辛基三苯基溴化膦来制备高质量的过氧化物激光聚光器。这种多功能分子能同时钝化透辉石阳离子和阴离子,减少缺陷位点,提高透辉石纳米晶体的光量子产率(PLQY)。具有高立体阻碍效应的三苯基膦基团可阻碍离子迁移;长烷基链的疏水特性可防止水的侵蚀,这两点共同提高了透辉石薄膜的稳定性。多功能分子钝化包晶石薄膜的 PLQY 高达 100%,在室内存放 30 天后仍能保持 96% 的初始 PL 强度。在几何因子为 3.1 的条件下,该包晶 LSC 器件的最大光学效率达到了 6.5%。这些发现为提高基于包晶的 LSC 性能开辟了一条新途径。
{"title":"Multifunctional Molecule Passivated Quasi-2D Perovskite Film for Efficient and Stable Luminescent Solar Concentrator","authors":"Mingze Sun, Ying Chen, Shubing Tian, Mingming Zhang, Haokun Jiang, Kang Liu, Jixiang Xu, Fangxu Dai, Lei Wang, Zhongmin Zhou, Jun Xing","doi":"10.1002/adfm.202413553","DOIUrl":"https://doi.org/10.1002/adfm.202413553","url":null,"abstract":"Quasi−2D perovskite films with multiple quantum well structures can provide a large Stokes shift and efficient photoluminescence (PL), which have great potential in the application of luminescent solar concentrators (LSCs). However, its low photoelectric conversion efficiency and poor stability remain obstacles to commercial application. Here, a multifunctional molecule additive octyltriphenylphosphonium bromide is introduced to prepare high-quality perovskite LSCs. The multifunctional molecule can simultaneously passivate perovskite cations and anions, reducing the defect sites and improving the photoluminescence quantum yield (PLQY) of the perovskite nanocrystals. Triphenylphosphine groups with high steric hindrance effect can hinder ion migration; the hydrophobic properties of the long alkyl chain prevent water erosion, which together improves the stability of the perovskite films. The multifunctional molecule passivated perovskite film has a high PLQY of 100% and retains 96% of the initial PL intensity after 30 days of indoor storage. The perovskite LSC device achieves a maximum optical efficiency of 6.5% at a geometric factor of 3.1. The findings open a new way to boost the performance of perovskite-based LSCs.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"25 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673715","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
Heterogeneous Growth of 3D Printed Polymer Network for Multi-Material Integration 用于多材料集成的 3D 打印聚合物网络的异质生长
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-20 DOI: 10.1002/adfm.202415638
Hongfeng Mu, Ziyin Wang, Xiaona Xu, Hui Yuan, Kaihang Zhang, Yihao Zhang, Xuxu Yang, Jingjun Wu, Qian Zhao, Tao Xie, Zizheng Fang, Ning Zheng
3D printing has been highly pursued owing to its effortless fabrication of custom-defined geometries, yet the integration of multi-material with diverse properties in one printed object remains challenging. In this work, a digital light 3D-printed polymer network that is capable of heterogeneous growth to seamlessly integrate multi-material is designed. This is accomplished through orthogonal photochemistry design, where visible light is utilized to initiate radical polymerization of acrylates for 3D printing. Inspired by plants’ phototropism due to uneven auxin distribution, UV light is employed to induce spatiotemporal catalyst generation for promoting network heterogeneous growth. In this process, it is found that the UV-generated catalyst effectively facilitates the hydrolysis of ketals to produce hydroxyls, which can further serve as “growing sites” to initiate the ring-opening polymerization of polycaprolactone. This enables precise manipulation of both shape and mechanical properties in 3D-printed objects. The distinctive heterogeneous growth mechanism of 3D printing enables the production of multi-material components using a single resin.
三维打印因其可轻松制造定制的几何形状而备受追捧,但要在一个打印物体中整合具有不同特性的多种材料仍是一项挑战。在这项工作中,我们设计了一种数字光三维打印聚合物网络,它能够异质生长,无缝集成多种材料。这是通过正交光化学设计实现的,即利用可见光引发丙烯酸酯的自由基聚合,从而实现 3D 打印。受植物因助剂分布不均而产生的向光性的启发,利用紫外线诱导时空催化剂的生成,以促进网络异质生长。在这一过程中,研究人员发现紫外线产生的催化剂能有效促进酮的水解,从而产生羟基,羟基可进一步作为 "生长点",启动聚己内酯的开环聚合。这样就能精确控制三维打印物体的形状和机械性能。三维打印技术独特的异质生长机制使其能够使用单一树脂生产多种材料的部件。
{"title":"Heterogeneous Growth of 3D Printed Polymer Network for Multi-Material Integration","authors":"Hongfeng Mu, Ziyin Wang, Xiaona Xu, Hui Yuan, Kaihang Zhang, Yihao Zhang, Xuxu Yang, Jingjun Wu, Qian Zhao, Tao Xie, Zizheng Fang, Ning Zheng","doi":"10.1002/adfm.202415638","DOIUrl":"https://doi.org/10.1002/adfm.202415638","url":null,"abstract":"3D printing has been highly pursued owing to its effortless fabrication of custom-defined geometries, yet the integration of multi-material with diverse properties in one printed object remains challenging. In this work, a digital light 3D-printed polymer network that is capable of heterogeneous growth to seamlessly integrate multi-material is designed. This is accomplished through orthogonal photochemistry design, where visible light is utilized to initiate radical polymerization of acrylates for 3D printing. Inspired by plants’ phototropism due to uneven auxin distribution, UV light is employed to induce spatiotemporal catalyst generation for promoting network heterogeneous growth. In this process, it is found that the UV-generated catalyst effectively facilitates the hydrolysis of ketals to produce hydroxyls, which can further serve as “growing sites” to initiate the ring-opening polymerization of polycaprolactone. This enables precise manipulation of both shape and mechanical properties in 3D-printed objects. The distinctive heterogeneous growth mechanism of 3D printing enables the production of multi-material components using a single resin.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"22 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678415","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 Moisture-Proof, Anti-Fouling, and Low Signal Attenuation All-Nanofiber Triboelectric Sensor for Self-Powered Respiratory Health Monitoring 用于自供电呼吸健康监测的防潮、防污和低信号衰减全纳米纤维三电传感器
IF 19 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2024-11-20 DOI: 10.1002/adfm.202415421
Xiao Chen, Xiao Peng, Chuanhui Wei, Zixun Wang, Jin He, Hengrui Sheng, Tao Jiang, Kai Dong
Breathing is an important physiological health indicator of the human body. Real time and long-term monitoring with low attenuation of human respiratory health status is of great significance. However, the working performance of respiratory sensors typically placed at the mouth and nose of the human body is greatly affected by exhaled moisture and small pollutants. Here, an all-nanofiber self-powered respiratory sensor (ASRS) with a multi-layer stacking structure is developed based on contact electrification or triboelectrification effect. By spraying method to chemically graft low surface energy octadecyltrichlorosilane (OTS) small molecules onto the surface of nanofibers, the ASRS is endowed with excellent superhydrophobicity and self-cleaning properties, making it free from the influence of high humidity and small particle pollutants in exhaled gas. Due to the gradient variation of contact interface with increasing pressure, the ASRS exhibits a multi-stage linear sensitivity response trend, which has high pressure response sensitivity of 0.048 kPa−1. In addition, the ASRS is further integrated on a smart mask for real-time and long-term monitoring of respiratory health status, including age and gender of subjects, physical activity status, and sleep apnea syndrome. This work provides an effective self-powered sensing strategy for daily physiological monitoring, proactive healthcare, and early disease warning.
呼吸是人体重要的生理健康指标。对人体呼吸健康状况进行低衰减的实时和长期监测具有重要意义。然而,通常置于人体口鼻部位的呼吸传感器的工作性能会受到呼出的湿气和微小污染物的极大影响。在此,我们基于接触电化或三电化效应,开发了一种具有多层堆叠结构的全纳米纤维自供电呼吸传感器(ASRS)。通过喷涂法将低表面能的十八烷基三氯硅烷(OTS)小分子化学接枝到纳米纤维表面,使其具有优异的超疏水和自清洁性能,从而不受高湿度和呼出气体中微小颗粒污染物的影响。由于接触界面随压力增加而梯度变化,ASRS 呈现出多级线性灵敏度响应趋势,其压力响应灵敏度高达 0.048 kPa-1。此外,ASRS 还被进一步集成到智能面罩上,用于实时和长期监测呼吸健康状况,包括受试者的年龄和性别、体力活动状态和睡眠呼吸暂停综合征。这项工作为日常生理监测、前瞻性医疗保健和早期疾病预警提供了一种有效的自供电传感策略。
{"title":"A Moisture-Proof, Anti-Fouling, and Low Signal Attenuation All-Nanofiber Triboelectric Sensor for Self-Powered Respiratory Health Monitoring","authors":"Xiao Chen, Xiao Peng, Chuanhui Wei, Zixun Wang, Jin He, Hengrui Sheng, Tao Jiang, Kai Dong","doi":"10.1002/adfm.202415421","DOIUrl":"https://doi.org/10.1002/adfm.202415421","url":null,"abstract":"Breathing is an important physiological health indicator of the human body. Real time and long-term monitoring with low attenuation of human respiratory health status is of great significance. However, the working performance of respiratory sensors typically placed at the mouth and nose of the human body is greatly affected by exhaled moisture and small pollutants. Here, an all-nanofiber self-powered respiratory sensor (ASRS) with a multi-layer stacking structure is developed based on contact electrification or triboelectrification effect. By spraying method to chemically graft low surface energy octadecyltrichlorosilane (OTS) small molecules onto the surface of nanofibers, the ASRS is endowed with excellent superhydrophobicity and self-cleaning properties, making it free from the influence of high humidity and small particle pollutants in exhaled gas. Due to the gradient variation of contact interface with increasing pressure, the ASRS exhibits a multi-stage linear sensitivity response trend, which has high pressure response sensitivity of 0.048 kPa<sup>−1</sup>. In addition, the ASRS is further integrated on a smart mask for real-time and long-term monitoring of respiratory health status, including age and gender of subjects, physical activity status, and sleep apnea syndrome. This work provides an effective self-powered sensing strategy for daily physiological monitoring, proactive healthcare, and early disease warning.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"71 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678413","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
期刊
Advanced Functional Materials
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1