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：This paper presents a systematic investigation and demonstration of a K-band circularly polarized liquidcrystal-based phased array(LCPA),including the design,over-the-air(OTA)in-array calibration,and experimental *** LCPA contains 16 phase-shifting radiating channels,each consisting of a circularly polarized stacked patch antenna and a liquid-crystal-based phase shifter(LCPS)based on a loaded differential line *** to its slow-wave properties,the LCPS exhibits a maximum phase-shifting range of more than 360°with a figure of merit of 78.3(°)·dB^(-1)based on a liquid crystal layer with a thickness of only 5μ***,an automatic OTA calibration based on a state ergodic method is proposed,which enables the extraction of the phase-voltage curve of every individual LCPA *** proposed LCPA is manufactured and characterized with a total profile of only 1.76 mm,experimentally demonstrating a scanned circularly polarized beam from-40°to+40°with a measured peak gain of 12.5 dBic and a scanning loss of less than 2.5 *** bandwidth of the LCPA,which satisfies the require-ments of port reflection(|S_(11)|)<-15 dB,an axial ratio(AR)<3 dB,beam squinting<3°,and a gain variation<2.2 dB,spans from 25.5 to 26.0 *** total efficiency is about 34%,which represents a new state of the *** use of the demonstrated low-profile LCPA to support circularly polarized scanning beams,along with the systematic design and calibration methodology,holds potential promise for a variety of millimeter-wave applications.

摘要：对柔性电子设备日益增长的需求使得开发具有高灵敏度和高线性度的传感器更加迫切.由于拉伸应变下不可逆结构损伤诱导电阻线性急剧增加,现有的可拉伸应变传感器难以完美地同时实现这两个特性.针对这一问题,本文提出了一种兼具表面褶皱和体相梯度孔隙的新型分级互连结构,利用水热活化机制精确控制纳米级褶皱间距,通过调控相分离中热力学和动力学行为构筑出体相梯度多孔结构,通过改变器件两侧曲率实现各向异性特征,深入研究各种设计的功效、量化几何结构对灵敏度的有效贡献和追踪形态演变.基于器件显著的灵敏度和各向异性,所制备的传感器能够有效监测静态和动态位移、表面运动、二维应变信号变化以及预测液位随时间变化.本工作为实现高质量的感知能力提供了一种广泛适用、适应性强、可扩展且具有成本效益的方法.

摘要：氢键有机框架材料(HOFs)在催化领域具有巨大的潜力,但其孔道空间在去除溶剂后易塌陷,限制了其在光催化能源转换和存储方面的应用.本研究采用孔道分割策略成功设计并合成了一种稳定孔道结构、高效光催化CO_(2)还原活性的HOF催化剂.H4TBAPy分子通过与HOF孔道中大量的CH…π相互作用锚定自身,并将HOF的大孔道分隔成多个小空间,显著增加了HOF框架的稳定性.同时,富电子属性的H4TBAPy分子提升了HOF体系中电子的传输速率,从而提高了催化活性.这项研究为设计稳定、高性能的HOFs光催化剂提供了新策略.

摘要：The growth of data and Internet of Things challenges traditional hardware,which encounters efficiency and power issues owing to separate functional units for sensors,memory,and *** this study,we designed an a-phase indium selenide(a-In_(2)Se_(3))transistor,which is a two-dimensional ferroelectric semiconductor as the channel material,to create artificial optic-neural and electro-neural synapses,enabling cutting-edge processing-in-sensor(PIS)and computing-in-memory(CIM)*** an optic-neural synapse for low-level sensory processing,the a-In_(2)Se_(3)transistor exhibits a high photoresponsivity(2855 A/W)and detectivity(2.91×10^(14)Jones),facilitating efficient feature *** high-level processing tasks as an electro-neural synapse,it offers a fast program/erase speed of 40 ns/50μs and ultralow energy consumption of 0.37 aJ/*** AI vision system using a-In_(2)Se_(3)transistors has been *** achieved an impressive recognition accuracy of 92.63%within 12 epochs owing to the synergistic combination of the PIS and CIM *** study demonstrates the potential of the a-In_(2)Se_(3)transistor in future vision hardware,enhancing processing,power efficiency,and AI applications.

摘要：单价Ag+或Li+引入到类金刚石结构的MQ22-(M=Ga,In;Q=S,Se)阴离子基团中能合成出良好的二阶非线性光学(NLO)晶体材料.然而,这些晶体分别面临着较低的抗激光损伤阈值(LIDT)或二氧化硅易被腐蚀等缺点,严重限制了其在高功率激光应用中的实用性.在本研究中,基于类金刚石结构的ZnSe,我们采用[Se_(4)Zn_(13)]Se_(2)4→[ClRb_(3)Ba]Se_(24)非常规的聚阳离子取代策略,设计并合成了一种新型的盐包硫属化合物[Rb_(3)BaCl][In_(8)Se_(14)](1).化合物1属于压缩黄铜矿型硒化物并保持了与AgInSe_(2)相同的晶体对称性(I-42d空间群).值得注意的是,由于InSe_(4)四面体结构单元的平行排列,化合物1具有相位匹配的强二次谐波(SHG)响应(2.0倍于AgGaS_(2)@2.90μm).此外,聚阳离子[Rb_(3)BaCl]^(4+)的引入促进了光学带隙(2.02 eV)的增强,有效地避免了对2.09μm激光的双光子吸收;同时结合较低的热膨胀系数,使得化合物1表现出高的LIDT(3.2倍于AgGaS2@2.09μm).本研究验证了在类金刚石结构中进行聚阳离子取代的可行性,并成功获得了性能优异的中远红外NLO材料.

摘要：这份报纸为为分系统的骚乱拒绝问题的解决之可能性没被假定的交换非线性的系统的一个班调查全球骚乱拒绝的问题。骚乱被假定是有完全未知的频率，阶段和振幅的正弦曲线。作为为非交换式的系统的内部模型的经典概念的延期，首先，一个交换内部模型被建议。第二，以便在学习下面解决这个问题，一个适应控制方法根据多重 Lyapunov 函数方法被建立。另外，分系统的适应州反馈的控制器被设计并且与一条切换的法律合并了 asymptotically 拒绝未知骚乱。最后，一个例子被提供表明建议设计方法的有效性。

摘要：Cobalt nanoparticles(NPs)catalysts are extensively used in heterogeneous catalytic reactions,and the addition of alkali metal promoters is a common method to modulate the catalytic performance because the catalyst's surface structures and morphologies are sensitive to the addition of ***,the underlying modulation trend remains ***,the adsorption of alkali metal promoters(Na and K)on the surfaces of face-centered-cubic(FCC)and hexagonal-closest packed(HCP)polymorphous cobalt was systematically investigated using density functional ***,the effect of alkali promoters on surface energies and nanoparticle morphologies was revealed on the basis of Wulff *** FCC-Co,the exposed area of the(111)facet in the nanoparticle increases with the adsorption coverage of alkali metal ***,the(311),(110),and(100)facets would disappear under the higher adsorption coverage of alkali *** HCPCo,the Wulff morphology is dominated by the(0001)and(1011)facets and is independent of the alkali metal adsorption *** work provides insights into morphology modulation by alkali metal promoters for the rational design and synthesis of cobalt-based nanomaterials with desired facets and morphologies.

摘要：A tri-port MIMO antenna designed for Micro/Pico-Cell application is *** is based on printed elements with X-shaped arms,which are oriented to 0°,120° and240° in the azimuth *** arms of these elements are connected,with which a selfdecoupled structure is *** mutual coupling between adjacent elements is below-15 ***,it size is compact and bidirectional radiation patterns with around 4dBi Gain and 92° 3dB beam width is achieved,which can provide good pattern diversity and full azimuth coverage in real applications.

摘要：基于空间电荷转移(TSCT)的热激活延迟荧光(TADF)材料因其可同时实现小的单重态-三重态分裂能(ΔEST)和快速的辐射速率(kf)而受到广泛关注,但对这类材料的合理设计仍面临挑战.本工作使用极化连续介质模型和量子力学与分子力学结合的方法,对咔唑基TSCTTADF材料在液相和固相中的光物理性质进行了理论研究,阐明其实验性能的差异并揭示分子设计规则.研究表明给体(D)、受体(A)单元平面度逐渐增强的分子表现出D和A单元之间的距离减小、分子内相互作用增强,导致其在固相中有利的辐射过程;并且A单元平面度的增强显著限制了分子的拉伸和旋转振动,减少了非辐射损失,有助于分子性能的提高.此外,这类分子的前线轨道分布显示出明显的分离,有利于实现较小的ΔEST.这些新的理论认识可以对TSCT-TADF材料的结构-性能关系提供深入的光物理见解,为设计和探索高性能TADF材料提供有效策略.