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| 1 | Ultrafast all-optical terahertz modulation based on an inverse-designed metasurface显示文摘Metasurface plays a key role in various terahertz metadevices,while the designed terahertz metasurface still lacks flexibility and variety.On the other hand,inverse design has drawn plenty of attention due to its flexibility and robustness in the application of photonics.This provides an excellent opportunity for metasurface design as well as the development of multifunctional,high-performance terahertz devices.In this work,we demonstrate that,for the first time,a terahertz metasurface supported by the electromagnetically induced transparency(EIT)effect can be constructed by inverse design,which combines the particle swarm optimization algorithm with the finite-difference time-domain method.Incorporating germanium(Ge)film with inverse-designed metasurface,an ultrafast EIT modulation on the picosecond scale has been experimentally verified.The experimental results suggest a feasibility to build the terahertz EIT effect in the metasurface through an optimization algorithm of inverse design.Furthermore,this method can be further utilized to design multifunctional and high-performance terahertz devices,which is hard to accomplish in a traditional metamaterial structure.In a word,our method not only provides a novel way to design an ultrafast all-optical terahertz modulator based on artificial metamaterials but also shows the potential applications of inverse design on the terahertz devices. | WEIBAO HE MINGYU TONG ZHONGJIE XU YUZE HU XIANG’AI CHENG TIAN JIANG | 2021 | Photonics Research2021，9，6： | 4 |
| 2 | Proactive Personalized Services Through Fog-Cloud Computing in Large-Scale IoT-Based Healthcare Application显示文摘With the development of medical sensors and IoT, personalized service assisted elder and patient living is a critical service in IoT-based healthcare application. However, the scale and complexity of personalized service is increasing because of ubiquitous deployment of various kinds of medical sensors, which cause response time increase and resource waste. Therefore, leveraging the advantage of complex event processing(CEP) in data stream processing, we propose a hierarchical fog-cloud computing CEP architecture for personalized service to accelerate response time and reduce resource waste. Firstly, we introduce the proposed architecture, which includes sensor layer, fog layer and cloud layer. Secondly, we propose a series of optimizations for the architecture, there are a partitioning and clustering approach and a communication and parallel processing policy to optimize the fog and cloud computing. Finally, we implement a prototype system based on the architecture named Fog Cep Care. Experimental result shows that Fog Cep Care is superior to the traditional IoT-based healthcare application. | Shuqing He Bo Cheng Haifeng Wang Yuze Huang Junliang Chen | 2017 | China Communications2017，14，11： | 0 |
| 3 | CIDP: a multi-functional platform for designing CRISPR sgRNAs显示文摘Dear Editor,Compared with traditional technologies affecting gene expression,changing DNA sequences of target genes is one of the most outstanding characters of CRISPR(Clustered Regularly Interspaced Short Palindromic Repeats).Single-guide RNAs(sgRNAs)guiding endonuclease Cas to target sites is a crucial step of CRISPR-Cas system for changing DNA sequences.An ideal sgRNA should only bind to the target gene.However,similar sequences of non-target sites can also be recognized leading to off-target effects[1]. | Dong Xu Jin Zhang Xianjia Zhao Yuze Hou Heling Jiang Wenchuang He Xiongfeng Ma Weihua Pan | 2023 | Horticulture Research2023，10，7： | 0 |
| 4 | Exciton diffusion and dissociation in organic and quantum-dot solar cells显示文摘For the process of photovoltaic conversion in organic solar cells(OSCs)and quantum-dot solar cells(QDSCs),three of four steps are determined by exciton behavior,namely,exciton generation,exciton diffusion,and exciton dissociation.Therefore,it is of great importance to regulate exciton behavior in OSCs and QDSCs for achieving high power conversion efficiency.Due to the rapid development in materials and device fabrication,great progress has been made to manage the exciton behavior to achieve prolonged exciton diffusion length and improved exciton dissociation in recent years.In this review,we first introduce the parameters that affect exciton behavior,followed by the methods to measure exciton diffusion length.Then,we provide an overview of the recent advances with regard to exciton behavior investigation in OSCs and QDSCs,including exciton lifetime,exciton diffusion coefficient,and exciton dissociation.Finally,we propose future directions in deepening the understanding of exciton behavior and boosting the performance of OSCs and QDSCs. | Dan He Miao Zeng Zhenzhen Zhang Yang Bai Guichuan Xing Hui-Ming Cheng Yuze Lin | 2023 | SmartMat2023，4，6： | 0 |
| 5 | Interpreting the biochemical specificity of mouse spinal cord by confocal raman microspectral imaging显示文摘Interpreting the biochemical specifcity of spinal cord tissue is the essential requirement for underst.anding the biochemical mechanisms during spinal-cord-related pathological course.In this work,a longitudinal study was implemented to reveal a precise linkage betwoen the spectral features and the molecular composition in er vivo mouse spinal cord tissue by microspectral Raman imaging.It was testified that lipid-rich white matter could be distinguished from gray matter not only by the lipid Raman peaks at 1064,1300,1445 and 1660 cm^(-1),but also by protein(1250 and 1328 cm^(-1))and saccharides(913 and 1137 cm^(-1))distributions.K-means cluster analysis was further applied to visualize the morphological basis of spinal cord tissue by chemical components and their dist ribution patterns.T wo-dimensional chemical images were then generated to visualize the contrast between two different tissue types by integrating the intensitics of the featured Raman bands.All the obtained results ilustrated the biochemical characteristics of spinal cord tssue,as well as some specific substance variances bet ween different tssue types,which formed a solid basis for the molecular investigation of spinal cord pathologi cal alterations. | Yuze Gong Zhuowen Liang Yaning Yin Jiwei Song Xueyu Hu Kaige Wang Qingli He Zhe Wang Jintao Bai Shuang Wang | 2017 | Journal of Innovative Optical Health Sciences2017，，5： | 0 |
| 6 | Aging Behavior and Creep Characteristics of CACB显示文摘Cement asphalt composite binder(CACB)is a type of composite binder composed of cement,asphalt,water,and various additives through curing,whose creep properties are influenced by asphalt aging.By CACB creep tests at various aging times,the creep compliance curves of the material were obtained.Curves of the test results were fitted by the creep compliance of Burgers model revised by fractional derivative,and the effects of asphalt aging and mix proportions on the CACB creep properties were analyzed.This study demonstrates that as aging time increased,the ability of the CACB to resist instant elastic deformation and viscous flow deformation was enhanced,the amount of its elastic components increased but the viscous components were reduced,and the material deformability decreased,exhibiting deforming properties similar to elastic materials.The effects of asphalt aging on the CACB viscoelastic mechanical properties were great during the initial aging stage(within 12 h)and became weaker during the later aging stage(over 12 h).During the initial aging stage,the CACB creep deformability could be enhanced by increasing asphalt application.However,during the later aging stage,asphalt application had little effect on creep deformability. | Yunliang Li Yuze Liu Lei Xu Xin He Haijiao Sun | 2020 | Journal of Harbin Institute of Technology(New Series)2020，27，2： | 0 |
| 7 | Software debugging analysis based on developer behavior data显示文摘1 Introduction Software debugging is one of the most costly activities in sof-ware development process.It mainly consists of four core tasks,namely fault detection,fault localization,fault understanding and fault fixing.Among them,fault localization normally re-quires the longest time and the largest efforts[1]. | Bo YANG Qian YU Huai LIU Yuze HE Chao LIU | 2021 | Frontiers of Computer Science2021，15，1： | 0 |
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