摘要：This paper is concerned with the scaled formation control problem for multi-agent systems(MASs)over fixed and switching ***,a modified resilient dynamic event-triggered(DET)mechanism involving an auxiliary dynamic variable(ADV)based on sampled data is *** the proposed DET mechanism,a random variable obeying the Bernoulli distribution is introduced to express the idle and busy situations of communication ***,the operation of absolute value is introduced into the triggering condition to effectively reduce the formation ***,a scaled formation control protocol with the proposed resilient DET mechanism is designed over fixed and switching *** scaled formation error system is modeled as a time-varying delay ***,several sufficient stability criteria are derived by constructing appropriate Lyapunov-Krasovskii functionals(LKFs).A co-design algorithm based on the sparrow search algorithm(SSA)is presented to design the control gains and triggering parameters ***,numerical simulations of multiple unmanned aerial vehicles(UAVs)are presented to validate the designed control method.

摘要：The paper designed a bionic woven tracheal stent and the stent was a multi-layer tubular structure with a transverse ***( PDO) monofilament and β-hydroxybutyrate and β-hydroxyvalerate copolymers/polylactic( PHBV/PLA) multifilament were chosen as the tissue engineering tracheal stent materials,and chitosan was chosen as the coating material. This study selected appropriate basic fabric structures and prepared the tracheal stent by setting reasonable weaving parameters,then treated the sample with coating and heat setting. Radical compression performances of the horizontal pipeline and longitudinal pipeline of this tracheal stent were investigated,and the experimental results showed that the stent had good performance on radial supporting force and elastic recovery,which meant it could supply adequate supports for cell growth and tissue regeneration of tracheal lesions; the horizontal pipeline could provide a good experimental foundation for reconstruction of the cartilage ring.

摘要：显示器是现代电子产品中人与机器交互的重要媒介.将显示器与纺织品相结合,已成为下一代智能可穿戴设备领域备受瞩目的方向之一.然而,从传统的刚性显示器向基于纺织品的柔性显示器过渡面临着诸多挑战,比如对显示器的纺织柔性化设计与精确集成技术的要求不断提高.这篇综述将重点概述这一领域最前沿的研究成果,主要涉及发光原理、典型材料以及结构设计的相互关联,其中纺织品和电子显示系统的无缝集成是本文的重点.此外,我们还将探索纺织品电子显示器的预期发展轨迹,并强调纱线发光器件的重要作用,以及微电子工程的集成方法和技术所带来的主要挑战.

摘要：一维二氧化锆纳米纤维(ZrO_(2)NFs)作为一种重要的无机材料,以其独特的结构特性、优异的化学/热稳定性,以及杰出的光学/电子性能而备受关注.生物模板法、相转化法、离心纺丝法和静电纺丝法是合成ZrO_(2)NFs的简便且高度通用的方法,在隔热、空气过滤、水净化、催化剂载体、染料敏化电池和锂离子电池等新兴应用领域具有巨大的潜力.本文对多孔、中空、层状、甚至三维自组装等多种结构的ZrO_(2)NFs的合成策略进行了详细的描述和分析.此外,本文还讨论了近年来打破陶瓷脆性、构建柔性ZrO_(2)NFs的革命性进展及其变形机制.接着介绍了ZrO_(2)NFs在隔热、环境修复、催化、电池等领域的应用成果.最后,我们提供了关于ZrO_(2)NFs的全面总结、关键挑战和未来展望.本文对未来新型ZrO_(2)NFs的研究具有一定的指导意义.

摘要：静电纺丝技术是制备纳米纤维膜的一种有效、简易方法,广泛用于基于能量收集的可穿戴电子器件.然而,由于超低的性能以及难以建立稳定的温差,其在热电领域的应用鲜有报道.本文结合静电纺丝技术和表面涂层的方法设计了具有优异拉伸性能和热电性能的高取向有机/无机复合纳米纤维膜.取向结构有利于载流子的快速传输,与无序结构的纳米纤维膜相比,其热电功率因子增加了7倍.此外,基于独特的取向纳米纤维结构,我们设计了新颖的辐射冷却-光热加热电极用于制备光驱动热电器件,为构建薄膜热电器件面内温差提供了一种新思路.而且,通过将两个高取向有机/无机复合纳米纤维膜正交堆叠,组装了用于识别人体关节复杂运动的多方向应变传感器.这些研究将推动静电纺纳米纤维基热电器件在下一代可穿戴电子器件领域的发展和应用.

摘要：碳材料通常用于太阳能水蒸发,因为它们可以吸收宽带光并有效地产生热量.然而,具有光滑表面的传统碳材料受到大约10%的中等反射的限制,损失了反射能量.在此,我们提出了一种多界面策略,以提高碳纳米纤维(CNFs)的固有光吸收,从而实现更高效的太阳能驱动水净化.通过简单的牺牲模板方法,在CNFs中引入分级孔来构建多个界面得到高表面粗糙度碳纳米纤维(HPCNFs).由于高表面粗糙度和源自分级孔的丰富内部空气介电界面,HPCNFs在宽带光(300–2500 nm)吸收显著改善,高达97.62%,这使得在1个太阳光照下的太阳光转换为蒸汽的效率达到96.13%,蒸发率高达1.78 kg m^(-2)h^(−1),超过了大多数相关的纯碳材料.当用于太阳能水蒸发脱盐时,HPCNF膜表现出对离子的高度排斥(<0.05 mg L^(−1)盐离子),并以每天11.18 kg m^(-2)的速率从湖中产生淡水,足以满足4–5个人的日常需求.这项工作为高效碳基太阳能水蒸发材料的设计提供了一种简便策略.

摘要：Owing to the excellent redox reversibility and structural diversity,polytriphenylamine(PTPAn)has been regarded as one of the promising cathode candidates for sodium-ion ***,it still suffers from the bulk aggregation and low operating capacity in practical *** by the in-situ polymerization,leaf-like PTPAn nanosheets are uniformly introduced on the surface of carbon nanofibers(CNFs)to form the free-standing CNF@PTPAn composite ***,the formation mechanism of the leaf-on-branch structure of CNF@PTPAn composites is systematically explored,confirming that the controlling of oxidation rate and growth degree plays crucial roles in tuning the morphology and active material content of the composite *** by the capacity-cutting analysis,the effective coupling between the active PTPAn and conductive CNFs can provide fast electron/ion-shuttling channels and deepen the electrochemical reaction *** 50mAg^(-1),the capacity of the optimized CNF@PTPAn composite can reach 105mAh g^(-1),with a stable rate capability of 78mAh g^(-1)even at 400mAg^(-1)after 500 cycles in a half *** detailed kinetic analysis confirms that the ion-storage behaviors in the lowvoltage region can be tailored for the improved capacitive contribution and diffusion ***,the flexible CNF-based full cell with CNF@PTPAn as the cathode and CNFs as the anode exhibits a high energy density of 60Wh kg^(-1)at 938Wkg^(-1).Based on this,the rational design is expected to provide more possibilities to obtain advanced freestanding electrode systems.

摘要：Solar-driven vapor generation by localized solar heating of a photothermal material is an environmentally friendly approach for seawater desalination and wastewater *** this work,inspired by the leaf transpiration in nature,we designed a novel bionic leaf to realize highly efficient solar vapor *** leaf-inspired three-dimensional(3D)material structure had a hydrophilic polyvinyl alcohol(PVA)foam layer(equivalence to the mesophyll tissue layer in a leaf)with high porosity and low thermal conductivity,a photothermal polypyrrole(PPy)layer(equivalence to the chlorophyll layer in a leaf)coated on the PVA foam,and a micro/nano-scale porous hydrophobic surface layer(equivalence to the stomal layer in a leaf).The PVA network had microchannels for water transportation and reducing water evaporation enthalpy,the PPy layer absorbed and converted solar energy to heat water locally,and the hydrophobic porous surface layer enhanced the rate of vapor *** asfabricated vapor generator based on the bionic-leaf structure achieved an impressive high evaporation rate of 3.09 kg m^(−2) h^(−1) under one sun irradiation(1 kW m^(−2)).The prototype vapor generator desalinated and purified brine and seawater successfully under natural *** solar vapor generator based on the biomimetic structure provides a potential low-cost and highly efficient water purification technology to help mitigate the global water crisis using sustainable energy.