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Tailoring Light–Matter Interactions in Overcoupled Resonator for Biomolecule Recognition and Detection

Nano-Micro Letters 2025年第1期17卷 262-280页

作者： Dongxiao Li Hong Zhou Zhihao Ren cheng xu chengkuo Lee Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Center for Intelligent Sensors and MEMS(CISM) National University of SingaporeSingapore 117608Singapore

Plasmonic nanoantennas provide unique opportunities for precise control of light–matter coupling in surface-enhanced infrared absorption(SEIRA)spectroscopy,but most of the resonant systems realized so far suffer from the obstacles of low sensitivity,narrow bandwidth,and asymmetric Fano resonance ***,we demonstrated an overcoupled resonator with a high plasmon-molecule coupling coefficient(μ)(OC-Hμresonator)by precisely controlling the radiation loss channel,the resonator-oscillator coupling channel,and the frequency detuning *** observed a strong dependence of the sensing performance on the coupling state,and demonstrated that OC-Hμresonator has excellent sensing properties of ultra-sensitive(7.25%nm^(−1)),ultra-broadband(3–10μm),and immune asymmetric Fano *** characteristics represent a breakthrough in SEIRA technology and lay the foundation for specific recognition of biomolecules,trace detection,and protein secondary structure analysis using a single array(array size is 100×100μm^(2)).In addition,with the assistance of machine learning,mixture classification,concentration prediction and spectral reconstruction were achieved with the highest accuracy of 100%.Finally,we demonstrated the potential of OC-Hμresonator for SARS-CoV-2 *** findings will promote the wider application of SEIRA technology,while providing new ideas for other enhanced spectroscopy technologies,quantum photonics and studying light–matter interactions.

关键词： Plasmonic nanoantennas Light-matter interaction Surface-enhanced infrared absorption Overcoupled Biosensing

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Hybrid algorithm for project scheduling with capacity constraint

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Journal of Systems Engineering and Electronics 2008年第5期19卷 1041-1046页

作者： cheng xu Wu cheng Dept. of Automation Tsinghua Univ. Beijing 100084 P. R. China China Academy of Electronics Information Technology Beijing 100041 P. R. China

Motivated by the projects constrained by space capacity and resource transporting time, a project scheduling probIem with capacity constraint was modeled. A hybrid algorithm is proposed, which uses the ideas of bi-level scheduling and project decomposition technology, and the genetic algorithm and tabu search is combined. Topological reordering technology is used to improve the efficiency of evaluation. Simulation results show the proposed algorithm can obtain satisfied scheduling results in acceptable time.

关键词： project scheduling capacity constraint heuristic algorithm bi-level scheduling.

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SOME INVERSE OPTIMIZATION PROBLEMS ON NETWORK

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Journal of Systems Science & Complexity 2013年第3期26卷 350-364页

作者： xu cheng xu Xiaoming School of Management University of Shanghai for Science and Technology College of Mathematics Qingdao University

In this paper,the authors consider some inverse problems on network,such as the inverse transport problems with gains(IGTP) and the inverse linear fractional minimum cost flow problem(IFFP).Firstly,the authors give the mathematics model of(IGTP) and an efficient method of solving it under l_1 norm;Secondly,taking advantage of the optimality conditions,the authors consider the(IFFP) and give a simple method of solving ***,an numerical example test is also developed.

关键词： Dual problem fractional minimum cost flow problem gain network inverse problem.

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Improved mass relations of mirror nuclei

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Nuclear Science and Techniques 2024年第9期35卷 178-185页

作者： cheng xu Man Bao Department of Physics University of Shanghai for Science and TechnologyShanghai 200093China

In this study,we revisit the previous mass relations of mirror nuclei by considering 1/N-and 1/Z-dependent terms and the shell effect across a *** root-mean-squared deviation is 66 keV for 116 nuclei with neutron number N≥10,as com-pared with experimental data compiled in the AME2020 *** predicted mass excesses of 173 proton-rich nuclei,including 98 unknown nuclei,are tabulated in the Supplemental Material herein with competitive accuracy.

关键词： Nuclear mass Mirror nuclei Proton-rich nuclei

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Special issue:innovative nuclear energy technology

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Frontiers in Energy 2021年第4期15卷 791-792页

作者： xu cheng Institute of Applied Thermofluidics Karlsruhe Institute of Technology76131 KarlsruheGermany

Nuclear energy plays an important role in the long-term energy *** to World Nuclear Association(WNA),the nuclear power installation in China will approximate 400 GWe by *** achieve high performance of the future nuclear reactors with respect to safety,sustainability,and economy,extensive research activities are ongoing worldwide to develop advanced nuclear energy systems and related ***,it is important to match the needs in countries where there are high expectations for nuclear technology and in countries where rich expertise and research findings exist.

关键词： energy approximate finding

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六硝基六氮杂异伍兹烷微球的声流控制备工艺及性能表征

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西安交通大学学报 2025年第1期59卷 183-193页

作者：刘硕程许王燕兰张松张传禹韦学勇西安交通大学机械工程学院西安710049 陕西应用物理化学研究所应用物理化学重点实验室西安710061 西安交通大学仪器科学与技术学院西安710049

针对当前六硝基六氮杂异伍兹烷(CL-20)微球制备中粒径较大且均匀性差的问题,提出了一种能够控制液滴生成模式的声流控技术。该技术将液滴微流控技术与声表面波技术相结合,提高了含能乙酸乙酯液滴的尺寸均匀性,利用溶剂-非溶剂重结晶法... 详细信息

针对当前六硝基六氮杂异伍兹烷(CL-20)微球制备中粒径较大且均匀性差的问题,提出了一种能够控制液滴生成模式的声流控技术。该技术将液滴微流控技术与声表面波技术相结合,提高了含能乙酸乙酯液滴的尺寸均匀性,利用溶剂-非溶剂重结晶法制备了微米级CL-20/NC含能微球。采用高速相机对液滴生成过程进行监测,结果显示,声表面波技术能有效控制液滴生成模式的转变,避免液滴生成过程中因材料析出和通道堵塞等原因引起的液滴生成模式的不可控转变,实现了液滴均匀连续的生成。使用场发射扫描电镜对具有不同CL-20含量、不同NC含量和不同粒径的微球形貌进行了表征,结果显示,通过降低CL-20含量、增加NC含量或增大微球粒径等方式,可以降低微球的表面粗糙度,减少表面缺陷,同时在声表面波技术辅助下,微球粒径变异系数从39.33%降至7.51%,极大地提高了微球的均匀性。通过X射线衍射仪和热质量分析仪对具有不同粒径的CL-20/NC微球的晶体结构和热力学性能进行了表征,结果显示,中位粒径为20μm的微球(分解峰温为229.04℃)的热稳定性优于中位粒径为7μm的微球(分解峰温为228.22℃)的热稳定性,而中位粒径为7μm的微球的反应剧烈程度与能量密度较大,其损失质量率(84.3%)和放热量(12.05 mW/mg)均高于中位粒径为20μm的微球的损失质量率(80.2%)和放热量(8.84 mW/mg)。声流控技术成功制备了粒径更小且均匀性显著提高的CL-20/NC含能微球,为高能量密度材料的优化设计与应用提供了重要参考。

关键词：声流控技术 CL-20/NC含能微球粒径变异系数热力学性能

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An Efficient Three-Factor Privacy-Preserving Authentication and Key Agreement Protocol for Vehicular Ad-Hoc Network

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China Communications 2021年第12期18卷 315-331页

作者： Tao xu cheng xu Zisang xu School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China Key Laboratory for Embedded and Network Computing of Hunan Province Changsha 410082China

As an indispensable part of the Intelli-gent Transportation System(ITS),the vehicular ad-hoc network(VANET)has attracted widespread atten-tion from academia and *** order to ensure the security of VANET,vehicles need to be authen-ticated before accessing the *** existing authentication protocols in VANET adopt the Trusted Authority(TA)with centralized structure which is re-sponsible for the authentication tasks of all ***,the large-scale network consume a lot of computing resources,which leads to unacceptable de-lay in message transmission in *** reducing the computational cost of TA,an efficient three-factor privacy-preserving authentication and key agreement protocol was proposed in our *** from before,the RoadSide Unit(RSU)no longer acts as an intermediate node but is responsible for assisting user authentication,which lead to the computational cost of TA is very *** formal and informal analysis,our protocol demonstrates excellent ***-pared with previous studies,our work emerges advan-tages and superiorities in the following aspects:com-putational cost,communication cost,security proper-ties and functions,message loss ratio,and message *** data and evidence indicate that our protocol is an ideal choice for large-scale VANET.

关键词： authentication vehicular ad-hoc network security three-factor

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Number-phase quantization of a mesoscopic RLC circuit

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Chinese Physics B 2012年第2期21卷 114-116页

作者： xu cheng-Lin Department of Mathematics Yunnan Normal UniversityKunming 650092China

With the help of the time-dependent Lagrangian for a damped harmonic oscillator, the quantization of mesoscopic RLC circuit in the context of a number-phase quantization scheme is realized and the corresponding Hamiltonian operator is obtained. Then the evolution of the charge number and phase difference across the capacity are obtained. It is shown that the number-phase analysis is useful to tackle the quantization of some mesoscopic circuits and dynamical equations of the corresponding operators.

关键词： mesoscopic RLC circuit number-phase quantization Lagrangian function

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Bioinspired 3D flexible devices and functional systems

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National Science Review 2024年第3期11卷 271-295页

作者： xu cheng Zhangming Shen Yihui Zhang Applied Mechanics Laboratory Department of Engineering Mechanics Tsinghua University Laboratory of Flexible Electronics Technology Tsinghua University

Flexible devices and functional systems with elaborated three-dimensional(3D) architectures can endow better mechanical/electrical performances, more design freedom, and unique functionalities, when compared to their two-dimensional(2D) counterparts. Such 3D flexible devices/systems are rapidly evolving in three primary directions, including the miniaturization, the increasingly merged physical/artificial intelligence and the enhanced adaptability and capabilities of heterogeneous *** challenges exist in this emerging research area, such as relatively poor controllability in the locomotion of soft robotic systems, mismatch of bioelectronic interfaces, and signal coupling in multi-parameter sensing. By virtue of long-time–optimized materials, structures and processes, natural organisms provide rich sources of inspiration to address these challenges, enabling the design and manufacture of many bioinspired 3D flexible devices/systems. In this Review, we focus on bioinspired 3D flexible devices and functional systems, and summarize their representative design concepts, manufacturing methods, principles of structure-function relationship and broad-ranging applications. Discussions on existing challenges, potential solutions and future opportunities are also provided to usher in further research efforts toward realizing bioinspired 3D flexible devices/systems with precisely programmed shapes,enhanced mechanical/electrical performances, and high-level physical/artificial intelligence.

关键词： bioinspired designs biomimetic 3D structures 3D flexible electronics 3D functional systems direct 3D manufacture 2D-to-3D assembly

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Experimental and numerical investigation of failure mode in geometrically imperfect DP590 steel

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Science China(Technological Sciences) 2015年第3期58卷 476-484页

作者： ZHUANG XinCun xu cheng ZHAO Zhen Institute of Forming Technology & Equipment School of Materials Science and Engineering Shanghai Jiaotong University

Various microstructure-level finite element models were generated according to the real microstructure of DP590 steel to capture the mechanical behavior and fracture *** failure mode of the dual-phase(DP)steels,mainly resulting from microstructure-level inhomogeneity and initial geometrical imperfection,was predicted using the plastic strain localization *** addition,dog-bone-type tensile test specimens with different edge qualities were prepared and the deformation processes were recorded using a digital image correlation *** the steel exhibited no initial geometrical imperfection,void initiation was triggered by decohesion between martensite and ferrite which was predicted based on the severe strain concentration,or tensile stress in areas where stress triaxiality and strain values were *** failure was caused by shear localization in the ***,the initial geometrical imperfections severely affected the overall ductility and failure mode of the *** initial geometrical imperfections were deeply ingrained,an incipient crack began at the site of initial geometrical imperfection,and then caused progressive damage throughout the microstructure,from the area of shear localization to the final ***,the depth of the geometrical imperfection was the critical factor in determining whether internal decohesion or a local crack plays a dominant role.

关键词： representative volume element dual-phase(DP) steel geometrical imperfection failure mode

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