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Science China(Technological Sciences) 2024年第9期67卷 2954-2964页

作者： YANG WenGuang wang wenhao TENG XiangYu QIAO ZeZheng YU HaiBo School of Electromechanical and Automotive Engineering Yantai UniversityYantai 264005China State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China

The development of microengineered hydrogels has opened up unlimited possibilities for designing complex structures at the microscale. In this study, we constructed an origami-inspired tubular structure with controlled mechanical buckling based on optically induced electrokinetics(OEK). By inducing a stress gradient in the thickness, a tubular structure can be formed from a poly(ethylene glycol) diacrylate(PEGDA) hydrogel film of various shapes that have been custom fabricated. To achieve an ideal three-dimensional(3D) structure, the amplitude of the tubular structure can be controlled by adjusting the aspect ratios or polymerization time. Furthermore, the tubular structure can be manipulated for the collection and transportation of *** summary, we provide an effective method for designing 3D structures at the micro-nano scale. This forming method holds great potential for achieving various functions in tissue engineering, drug packaging, and transportation in the future.

关键词： origami-inspired tubular structures optically induced electrokinetics microfabrication mechanical buckling

Hybrid nanoarchitectonics of TiO_(2)/aramid nanofiber membranes with softness and durability for photocatalytic dye degradation

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Chinese Chemical Letters 2024年第7期35卷 188-191页

作者： wenhao wang Guangpu Zhang Qiufeng wang Fancang Meng Hongbin Jia Wei Jiang Qingmin Ji Herbert Gleiter Institute for Nanoscience School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China School of Chemical Engineering Nanjing University of Science&TechnologyNanjing 210094China Nantong Junjiang Material Science and Technology Co. Ltd.Haimen 226136China

TiO_(2)-based films are one of the most attractive photocatalysts owing to their highly cost-effective ***,most TiO_(2)-based photocatalytic films for dye degradation are in the form of robust films(without flexibility),TiO_(2)coatings on carbon matrix(with leakage risk),or surface-covered TiO_(2)hybrids(not favorite to contact with external molecules).Therefore,the development of durable and highly efficient TiO_(2)photocatalytic films for dye degradation is still ***,we fabricated soft photocatalytic hybrid membranes(TANFs)from TiO_(2)nanotubes(Ti NT)and aramid nanofiber(ANF)by a facile vacuum filtration *** similar morphology and dimension of Ti NT and ANF enable them intricately intertwine with each other in the membrane *** an appropriate mixing ratio,the TANF exhibited significantly improved optical and mechanical *** used for dye degradation,the membrane showed excellent photocatalytic performance and could keep stable activity and integrated state for repeated usage.

关键词： Titanium dioxide nanotube Aramid nanofiber Flexible hybrid membrane Photocatalysis Dye degradation

Woven fabric triboelectric nanogenerators for human-computer interaction and physical health monitoring

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Nano Research 2024年第6期17卷 5540-5548页

作者： Yu Miao Mengjuan Zhou Jia Yi Yanyan wang Guangjin Tian Hongxia Zhang Wenlong Huang wenhao wang Ronghui Wu Liyun Ma College of Textile and Clothing Xinjiang UniversityUrumqi 830046China College of Textiles Donghua UniversityShanghai 201620China College of Physics Xiamen UniversityXiamen 201620China Department of Bioengineering Imperial College LondonLondon SW72AZUK

Triboelectric nanogenerator(TENG)converts mechanical energy into valuable electrical energy,offering a solution for future energy *** an indispensable part of TENG,textile TENG(T-TENG)has incredible advantages in harvesting biomechanical energy and physiological signal ***,the application of T-TENG is restricted,partly because the fabric structure parameter and structure on T-TENG performance have not been fully *** study comprehensively investigates the effect of weaving structure on fabric TENGs(F-TENGs)for direct-weaving yarn TENGs and post-coating fabric *** direct-weaving F-TENGs,a single-yarn TENG(Y-TENG)with a core-sheath structure is fabricated using conductive yarn as the core layer yarn and polytetrafluoroethylene(PTFE)filaments as the sheath *** fabrics with five different sets of parameters were designed and *** post-coating F-TENGs,fabrics with weaving structures of plain,twill,satin,and reinforced twill were fabricated and coated with conductive silver ***,the twill F-TENGs have the best electrical outputs,followed by the satin F-TENGs and plain weave ***,the increase of the Y-TENG gap spacing was demonstrated to improve the electrical output ***,T-TENGs are demonstrated for human-computer interaction and self-powered real-time *** systematic work provides guidance for the future T-TENG’s design.

关键词： single-yarn triboelectric nanogenerators woven fabric triboelectric nanogenerators fabric weaving structures and parameters human-computer interaction physical health monitoring

Inhalable iron redox cycling powered nanoreactor for amplified ferroptosis-apoptosis synergetic therapy of lung cancer

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Nano Research 2024年第6期17卷 5435-5451页

作者： Linjing Wu wenhao wang Mengqin Guo Fangqin Fu Wenhua wang Tszching Sung Meihong Zhang Ziqiao Zhong Chuanbin Wu Xin Pan Zhengwei Huang College of Pharmacy Jinan UniversityGuangzhou 511436China School of Pharmaceutical Sciences Sun Yat-sen UniversityGuangzhou 510006China

Fenton reaction centered ferroptosis-apoptosis synergetic therapy has emerged as a promising tumor elimination ***,the low intracellular Fenton level and accumulation of therapeutics at the lesion site greatly limit the efficacy of ferroptosis *** overcome these two bottlenecks,an inhalable metal polyphenol network(MPN)-hybrid liposome,encoded as LDG,was proposed for enhancing the intracellular Fenton reaction level by co-delivering the ferroptosis inducer dihydroartemisinin(DHA)and the ferrous ion(Fe2+)donor *** synthesized LDG had excellent nebulization performance which significantly improved the accumulation in the lungs,about 8.2 times of intravenous *** terms of anticancer mechanisms,MPN raised the intracellular level of Fe2+by constructing iron cycling in the weakly acidic environment of *** by Fe2+,DHA with peroxide-bridge structure underwent a high level of Fenton-like reaction,promoted the production of intracellular reactive oxygen species(ROS)and induced strong ferroptosis while cooperating with *** exhibited extraordinary antitumor ability in an orthotopic lung tumor model,whose tumor inhibition efficiency was 1.53(P=0.0014)and 1.32(P=0.0183)times of the LG group(liposomes coated with gallic acid(GA)-Fe MPN)and LD group(liposomes loaded with DHA),respectively,showing the strongest anticancer *** conclusion,the constructed MPN-hybrid liposomes could be a potent custom nanoplatform for pulmonary delivery and underscored the great potential of ferroptosis-apoptosis synergetic therapy.

关键词： lung cancer pulmonary delivery ferroptosis metallic polyphenol network

Simultaneous determination of five plant hormones in cotton leaves using QuEChERS combined with HPLC‒MS/MS

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Journal of Cotton Research 2024年第2期7卷 163-176页

作者： wang wenhao SONG Xianpeng wang Dan MA Yajie SHAN Yongpan REN Xiangliang HU Hongyan WU Changcai YANG Jun MA Yan National Key Laboratory of Cotton Biobreeding and Integrated Utilization Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangHenan 455000China College of Agriculture Hebei Agricultural UniversityBaodingHebei 071000China Zhengzhou Research Base National Key Laboratory of Cotton Biobreeding and Integrated UtilizationZhengzhou UniversityZhengzhouHenan 450001China Western Agricultural Research Center Chinese Academy of Agricultural SciencesChangjiXinjiang 831100China

Background Plant hormones profoundly influence cotton growth,development,and responses to various ***,there is a pressing need for an efficient assay to quantify these hormones in *** this groundbreaking study,we have established QuEChERS-HPLC‒MS/MS method,for the simultaneous detection of multiple plant hormones in cotton leaves,allowing the analysis and quantification of five key plant *** Sample extraction and purification employed 0.1%acetic acid in methanol and C18 for optimal recovery of plant *** method applied to cotton demonstrated excellent linearity across a concentration range of 0.05–1 mg・L−1,with linear regression coefficients exceeding *** limits of quantification(LOQs)were 20μg・kg−1 for GA3 and 5μg・kg−1 for the other four plant *** rates for the five plant hormones matrix spiked at levels of 5,10,100,and 1000μg・kg−1 were in the range of 79.07%to 98.97%,with intraday relative standard deviations(RSDs)ranging from 2.11%to 8.47%.The method was successfully employed to analyze and quantify the five analytes in cotton leaves treated with plant growth *** The study demonstrates that the method is well-suited for the determination of five plant hormones in *** exhibits excellent selectivity and sensitivity in detecting field samples,thus serving as a robust tool for indepth research into cotton physiology.

关键词： Cotton Plant hormones QuEChERS HPLC‒MS/MS

Circular polarization-selective optical,photothermal,and optofluidic effects in chiral metasurfaces

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Photonics Research 2024年第2期12卷 331-340页

作者： CUIPING MA PENG YU ZHIMIN JING YISONG ZHU PEIHANG LI wenhao wang HONGXING XU YANNING ZHANG LIANG PAN TAE-YOUL CHOI ARUP NEOGI ALEXANDER OGOVOROV ZHIMING wang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore School of Physics and Technology Center for Nanoscience and NanotechnologyWuhan UniversityWuhan 430072China Department of Mechanical Engineering University of North TexasDentonTexas 76207USA Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute Ohio UniversityAthensOhio 45701USA

Circular dichroism (CD) is extensively used in various material systems for applications including biological detection,enantioselective catalysis,and chiral *** paper introduces a chiral absorptive metasurface that exhibits a circular polarization-selective effect in dual bands-positive and negative CD peaks at short wavelengths and long wavelengths,***,we uncover that this phenomenon extends beyond the far-field optical response,as it is also observed in the photothermal effect and the dynamics of thermally induced fluid *** carefully engineering the metasurface design,we achieve two distinct CD signals with high g factors (1) at the wavelengths of 877 nm and 1045 nm,*** findings presented in this study advance our comprehension of CD and offer promising prospects for enhancing chiral light–matter interactions in the domains of nanophotonics and optofluidics.

关键词： chiral catalysis circular

基于TiO_(2)/Ag/TiO_(2)结构的高透光红外隐身薄膜研究

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稀有金属材料与工程 2024年第8期53卷 2259-2266页

作者：王龙汪刘应王文豪刘顾葛超群王滨许可俊中国人民解放军火箭军工程大学智剑实验室陕西西安710025

为了解决可见光与红外兼容隐身的光学特性选择调控难题,基于TiO_(2)/Ag/TiO_(2)堆叠膜层结构集成诱导透射、辐射抑制等光学效应协同作用,提出一种可见光高透射与红外低辐射兼容的新型隐身材料,并开展结构特征对可见光透过率与红外反射... 详细信息

为了解决可见光与红外兼容隐身的光学特性选择调控难题,基于TiO_(2)/Ag/TiO_(2)堆叠膜层结构集成诱导透射、辐射抑制等光学效应协同作用,提出一种可见光高透射与红外低辐射兼容的新型隐身材料,并开展结构特征对可见光透过率与红外反射率的影响机制研究,进而优化设计与制备高透光红外隐身薄膜结构,并对其兼容性隐身性能测试表征。研究表明,经优化设计的TiO_(2)/Ag/TiO_(2)结构各膜层厚度为30/18/35 nm时,石英基底样品的可见光平均透射率与中远红外平均反射率分别可达81.51%、90.78%,具备高水平的可见光透视与高温红外辐射抑制能力;柔性(C10H8O4)n(PET)基底样品的可见光平均透射率与中远红外平均反射率分别可达65.68%、84.46%,具备较好的透视度、遮阳与红外辐射抑制综合能力,并有高柔性曲面共形能力。该研究成果可为多频谱兼容光学隐身材料设计及应用提供重要的技术支撑。

关键词：多频谱兼容隐身高透光红外低辐射膜层结构

弱光触发下GaAs光电导开关的载流子输运和热失效机制

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电工技术学报 2024年第7期39卷 2153-2160页

作者：司鑫阳徐鸣王文豪常家豪王铖杰西安理工大学应用物理系西安710048

弱光触发下高倍增砷化镓光电导开关(GaAs PCSS)内以丝状电流为表现形式的载流子输运机制对其瞬态工作特性和寿命研究有重要意义。该文基于有限元方法构建了GaAs PCSS的物理模型,结合丝状电流的生热机制对1.5μJ弱光触发下开关的瞬态输... 详细信息

弱光触发下高倍增砷化镓光电导开关(GaAs PCSS)内以丝状电流为表现形式的载流子输运机制对其瞬态工作特性和寿命研究有重要意义。该文基于有限元方法构建了GaAs PCSS的物理模型,结合丝状电流的生热机制对1.5μJ弱光触发下开关的瞬态输出电流和晶格温度进行了仿真分析,考察了偏置电场对GaAs PCSS输出特性的影响。通过不同时刻开关内部的瞬态电场、电子浓度和晶格温度等方面研究了高倍增模式下GaAs PCSS的光生载流子输运过程和损伤机理。结果表明,高密度丝状电流的存在伴随于高场畴的产生和发展。开关内部电场越高,负微分效应引起的载流子聚束现象越明显,相应的电子浓度和晶格温度值也越高;在浓度达1017 cm^(-3)数量级的等离子体通道中,阳极附近电场强度和晶格温度最大值分别为220 kV/cm和821.92 K。

关键词： GaAs 光电导开关高倍增模式丝状电流输运机制

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基于不同材料体系的吸波超材料研究进展

稀有金属材料与工程 2024年第3期53卷 856-869页

作者：王文豪王龙汪刘应刘顾葛超群许可俊王伟超胡灵杰火箭军工程大学智剑实验室陕西西安710025

吸波材料在国防和民生领域发挥着至关重要的作用,但是传统吸波材料因质量大、频带窄已难以满足日益复杂的电磁环境。融合了结构设计思路的吸波超材料以“薄、轻、宽、强”和动态可调、极化角度不敏感等突出优势,助推了电磁吸波领域的飞... 详细信息

吸波材料在国防和民生领域发挥着至关重要的作用,但是传统吸波材料因质量大、频带窄已难以满足日益复杂的电磁环境。融合了结构设计思路的吸波超材料以“薄、轻、宽、强”和动态可调、极化角度不敏感等突出优势,助推了电磁吸波领域的飞速发展。本文首先阐明了超材料吸波的原理和方法,明确几何结构设计对电磁吸波性能的重要影响。其次,详细讨论了碳基、水基、金属基和无机化合物基等材料体系下吸波超材料的发展现状,指明目前发展趋势以主动调谐、轻质宽频、多波段兼容为主线。最后总结了目前的发展瓶颈并展望了未来重点研究方向,为吸波超材料优化设计提供了思路。

关键词：超材料电磁吸波研究进展

计及混合交易模式的多区域互联电力系统碳排放流计算方法

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电网技术 2024年第9期48卷 3535-3543,I0001页

作者：唐爱红余文晗张莹瞿子涵王庆铭王文浩武汉理工大学自动化学院湖北省武汉市430070 国网湖北省电力有限公司电力科学研究院湖北省武汉市430077

为理清在多区域互联系统中各子区域间的混合交易对碳流分布的影响,该文提出了一种计及混合交易模式的多区域互联电力系统碳排放流计算方法。首先采用分裂法的思想,将原多区域互联电力系统转化为直观的双边交易系统。再根据潮流追踪法,... 详细信息

为理清在多区域互联系统中各子区域间的混合交易对碳流分布的影响,该文提出了一种计及混合交易模式的多区域互联电力系统碳排放流计算方法。首先采用分裂法的思想,将原多区域互联电力系统转化为直观的双边交易系统。再根据潮流追踪法,将联营交易等效为多笔虚拟双边交易,成功将网损分至每笔交易,实现双边交易网络与联营交易网络的解耦。然后根据每笔交易的特性,得出新交易网络的运行参数,分别计算出各网络中的支路碳流率与负荷碳流率,进而计算出原多区域互联系统的碳流分布。算例结果显示,与传统的碳流计算法相比,上述方法能够反映出不同混合交易模式对系统碳流分布的影响,有效地避免不同交易耦合所造成的“碳泄露”,并能向电力用户展示碳排放的构成信息,具有较高的实用价值。

关键词：多区域互联交易模式碳流率碳流分布