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| 1 | On the treatment of solid boundary in smoothed particle hydrodynamics显示文摘As a popular meshfree particle method,the smoothed particle hydrodynamics(SPH) has suffered from not being able to di-rectly implement the solid boundary conditions.This influences the SPH approximation accuracy and hinders its further de-velopment and application to engineering and scientific problems.In this paper,a coupled dynamic solid boundary treatment(SBT) algorithm has been proposed,after investigating the features of existing SPH SBT algorithms.The novelty of the cou-pled dynamic SBT algorithm includes a new repulsive force between approaching fluid and solid particles,and a new numeri-cal approximation scheme for estimating field functions of virtual solid particles.The new SBT algorithm has been examined with three numerical examples including a typical dam-break flow,a dam-break flow with a sharp-edged obstacle,and a water entry problem.It is demonstrated that SPH with this coupled dynamic boundary algorithm can lead to accurate results with smooth pressure field,and that the new SBT algorithm is also suitable for complex and even moving solid boundaries. | LIU MouBin SHAO JiaRu CHANG JianZhong | 2012 | Science China(Technological Sciences)2012，55，1： | 29 |
| 2 | Three-dimensional chiral microstructures fabricated by structured optical vortices in isotropic material显示文摘Optical vortices,a type of structured beam with helical phase wavefronts and‘doughnut’-shaped intensity distributions,have been used to fabricate chiral structures in metals and spiral patterns in anisotropic polarization-dependent azobenzene polymers.However,in isotropic polymers,the fabricated microstructures are typically confined to non-chiral cylindrical geometry due to the two-dimensional‘doughnut’-shaped intensity profile of the optical vortices.Here we develop a powerful strategy to realize chiral microstructures in isotropic material by coaxial interference of a vortex beam and a plane wave,which produces threedimensional(3D)spiral optical fields.These coaxial interference beams are generated by designing contrivable holograms consisting of an azimuthal phase and an equiphase loaded on a liquid-crystal spatial light modulator.In isotropic polymers,3D chiral microstructures are achieved under illumination using coaxial interference femtosecond laser beams with their chirality controlled by the topological charge.Our further investigation reveals that the spiral lobes and chirality are caused by interfering patterns and helical phase wavefronts,respectively.This technique is simple,stable and easy to perform,and it offers broad applications in optical tweezers,optical communications and fast metamaterial fabrication. | Jincheng Ni Chaowei Wang Chenchu Zhang Yanlei Hu Liang Yang Zhaoxin Lao Bing Xu Jiawen Li Dong Wu Jiaru Chu | 2017 | Light(Science & Applications)2017，6，1： | 28 |
| 3 | Experimental study on the seismic behavior of high strength concrete fi lled double-tube columns显示文摘To study the seismic behavior of high strength concrete fi lled double-tube(CFDT) columns,each consisting of an external square steel tube and an internal circular steel tube,quasi-static tests on eight CFDT column specimens were conducted.The test variables included the width-to-thickness ratio(β1) and the area ratio(β2) of the square steel tube,the wall thickness of the circular steel tube,and the axial force(or the axial force ratio) applied to the CFDT columns.The test results indicate that for CFDT columns with a square steel tube with β1 of 50.1 and 24.5,local buckling of the specimen was found at a drift ratio of 1/150 and 1/50,respectively.The lateral force-displacement hysteretic loops of all specimens were plump and stable.Reducing the width-to-thickness ratio of the square steel tube,increasing its area ratio,or increasing the wall thickness of the internal circular steel tube,led to an increased fl exural strength and deformation capacity of the specimens.Increasing the design value of the axial force ratio from 0.8 to 1.0 may increase the fl exural strength of the specimens,while it may also decrease the ultimate deformation capacity of the specimen with β1 of 50.1. | Qian Jiaru Li Ningbo Ji Xiaodong Zhao Zuozhou | 2014 | Earthquake Engineering and Engineering Vibration2014，13，1： | 12 |
| 4 | Bioinspired micro/nanostructured surfaces prepared by femtosecond laser direct writing for multi-functional applications显示文摘manufacturing of biomimetic micro/nanostructures due to its specific advantages including high precision,simplicity,and compatibility for diverse materials in comparison with other methods(e.g.ion etching,sol-gel process,chemical vapor deposition,template method,and self-assembly).These biomimetic micro/nanostructured surfaces are of significant interest for academic and industrial research due to their wide range of potential applications,including self-cleaning surfaces,oil-water separation,and fog collection.This review presents the inherent relationship between natural organisms,fabrication methods,micro/nanostructures and their potential applications.Thereafter,we throw a list of current fabrication strategies so as to highlight the advantages of FLDW in manufacturing bioinspired microstructured surfaces.Subsequently,we summarize a variety of typical bioinspired designs(e.g.lotus leaf,pitcher plant,rice leaf,butterfly wings,etc)for diverse multifunctional micro/nanostructures through extreme femtosecond laser processing technology.Based on the principle of interfacial chemistry and geometrical optics,we discuss the potential applications of these functional micro/nanostructures and assess the underlying challenges and opportunities in the extreme fabrication of bioinspired micro/nanostructures by FLDW.This review concludes with a follow up and an outlook of femtosecond laser processing in biomimetic domains. | Yiyuan Zhang Yunlong Jiao Chuanzong Li Chao Chen Jiawen Li Yanlei Hu Dong Wu Jiaru Chu | 2020 | International Journal of Extreme Manufacturing2020，2，3： | 9 |
| 5 | Improved design of special boundary elements for T-shaped reinforced concrete walls显示文摘This study examines the design provisions of the Chinese GB 50011-2010 code for seismic design of buildings for the special boundary elements of T-shaped reinforced concrete walls and proposes an improved design method.Comparison of the design provisions of the GB 50011-2010 code and those of the American code ACI 318-14 indicates a possible deficiency in the T-shaped wall design provisions in GB 50011-2010.A case study of a typical T-shaped wall designed in accordance with GB 50011-2010 also indicates the insufficient extent of the boundary element at the non-flange end and overly conservative design of the flange end boundary element.Improved designs for special boundary elements of T-shaped walls are developed using a displacement-based method.The proposed design formulas produce a longer boundary element at the non-flange end and a shorter boundary element at the flange end, relative to those of the GB 50011-2010 provisions.Extensive numerical analysis indicates that T-shaped walls designed using the proposed formulas develop inelastic drift of 0.01 for both cases of the flange in compression and in tension. | Ji Xiaodong Liu Dan Qian Jiaru | 2017 | Earthquake Engineering and Engineering Vibration2017，16，1： | 8 |
| 6 | Quasi-phase-matching-division multiplexing holography in a three-dimensional nonlinear photonic crystal显示文摘Nonlinear holography has recently emerged as a novel tool to reconstruct the encoded information at a new wavelength,which has important applications in optical display and optical encryption.However,this scheme still struggles with low conversion efficiency and ineffective multiplexing.In this work,we demonstrate a quasi-phasematching(QPM)-division multiplexing holography in a three-dimensional(3D)nonlinear photonic crystal(NPC).3D NPC works as a nonlinear hologram,in which multiple images are distributed into different Ewald spheres in reciprocal space.The reciprocal vectors locating in a given Ewald sphere are capable of fulfilling the complete QPM conditions for the high-efficiency reconstruction of the target image at the second-harmonic(SH)wave.One can easily switch the reconstructed SH images by changing the QPM condition.The multiplexing capacity is scalable with the period number of 3D NPC.Our work provides a promising strategy to achieve highly efficient nonlinear multiplexing holography for high-security and high-density storage of optical information. | Pengcheng Chen Chaowei Wang Dunzhao Wei Yanlei Hu Xiaoyi Xu Jiawen Li Dong Wu Jianan Ma Shengyun Ji Leran Zhang Liqun Xu Tianxin Wang Chuan Xu Jiaru Chu Shining Zhu Min Xiao Yong Zhang | 2021 | Light(Science & Applications)2021，10，8： | 5 |
| 7 | A bio-inspired approach for cognitive radio networks显示文摘The recent increasing interest in cognitive radio networks has motivated the study and development of new approaches capable of coping with the intrinsic challenges of this kind of network,such as dynamic spectrum availability,distributed and heterogeneous network architectures,and soaring complexity.The bio-inspired approaches,with appealing characteristics such as autonomy,adaptation and collective intelligence of collaborative individuals,have been extensively studied.This paper presents a comprehensive survey of bio-inspired approaches for cognitive radio networks,emphasizing their domains of application.Specifically,ant colony optimization and particle warm optimization are further investigated with examples and numerical simulation. | HE ZhiQiang NIU Kai QIU Tao SONG Tao XU WenJun GUO Li LIN JiaRu | 2012 | Chinese Science Bulletin2012，57，28： | 5 |
| 8 | Engineered Functional Surfaces by Laser Microprocessing for Biomedical Applications显示文摘Metallic biomaterials are increasingly being used in various medical applications due to their high strength,fracture resistance,good electrical conductivity,and biocompatibility.However,their practical applications have been largely limited due to poor surface performance.Laser microprocessing is an advanced method of enhancing the surface-related properties of biomaterials.This work demonstrates the capability of laser microprocessing for biomedical metallic materials including magnesium and titanium alloys,with potential applications in cell adhesion and liquid biopsy.We investigate laser-material interaction,microstructural evolution,and surface performance,and analyze cell behavior and the surface-enhanced Raman scattering(SERS)effect.Furthermore,we explore a theoretical study on the laser microprocessing of metallic alloys that shows interesting results with potential applications.The results show that cells exhibit good adhesion behavior at the surface of the laser-treated surface,with a preferential direction based on the textured structure.A significant SERS enhancement of 6×10^3 can be obtained at the laser-textured surface during Raman measurement. | Guoqing Hu Kai Guan Libin Lu Jiaru Zhang Nie Lu Yingchun Guan | 2018 | Engineering2018，4，6： | 5 |
| 9 | Efficient full-path optical calculation of scalar and vector diffraction using the Bluestein method显示文摘Efficient calculation of the light diffraction in free space is of great significance for tracing electromagnetic field propagation and predicting the performance of optical systems such as microscopy,photolithography,and manipulation.However,existing calculation methods suffer from low computational efficiency and poor flexibility.Here,we present a fast and flexible calculation method for computing scalar and vector diffraction in the corresponding optical regimes using the Bluestein method.The computation time can be substantially reduced to the sub-second level,which is 105 faster than that achieved by the direct integration approach(~hours level)and 102 faster than that achieved by the fast Fourier transform method(~minutes level).The high efficiency facilitates the ultrafast evaluation of light propagation in diverse optical systems.Furthermore,the region of interest and the sampling numbers can be arbitrarily chosen,endowing the proposed method with superior flexibility.Based on these results,full-path calculation of a complex optical system is readily demonstrated and verified by experimental results,laying a foundation for real-time light field analysis for realistic optical implementation such as imaging,laser processing,and optical manipulation. | Yanlei Hu Zhongyu Wang Xuewen Wang Shengyun Ji Chenchu Zhang Jiawen Li Wulin Zhu Dong Wu Jiaru Chu | 2020 | Light(Science & Applications)2020，9，1： | 4 |
| 10 | Dynamic Airy imaging through high_efficiency broadband phase microelements by femtosecond laser direct writing显示文摘Manipulating Airy beams to symmetric Airy beams(SABs)with abruptly autofocusing and self accelerating properties has attracted much attention.With such a particular propagation dynamic,SABs may provide great potential in dynamic signal imaging.On the other hand,the generation of SABs by spatial light modulators suffers from the limitations of phase gradient accuracy,low optical efficiency(<40%),and a bulky footprint.Therefore,exploring imaging applications and optimal generation methods of these Airy-type beams deserves further research.Here,based on the coordinate transformation of SAB,an asymmetric Airy beam(AAB)is realized.Symmetric/asymmetric cubic phase microplates(SCPPs/ACPPs)are designed and fabricated for generating SAB/AAB.The SCPP/ACPP demonstrates superior performance:compact construction(60μm × 60μm × 1.1μm),continuous variation of phase,high efficiency(~81%at 532 nm),and broadband operation from 405 to 780 nm.Dynamic imaging under monochromatic and polychromatic lights is realized by the SAB/AAB,indicating various results at different propagation distances with a certain initial signal.Further investigation reveals that the SCPP on a soft substrate maintains its physical dimensions and optical properties unchanged during stretching.Our work enables wide potential applications in integrated optics,beam manipulation,and imaging. | ZE CAI XINBO QI DENG PAN SHENGYUN JI JINCHENG NI ZHAOXIN LAO CHEN XIN JIAWEN LI YANLEI HU DONG Wu JIARU CHI | 2020 | Photonics Research2020，8，6： | 3 |
| 11 | Damage detection test of a substructure model of the National Swimming Center显示文摘In order to detect the damage locations of complex spatial structures, a sensor region-based damage detection approach was developed based on the damage locating vectors method. A normalized damage locating index was introduced to identify the damage regions. An experiment on damage detection of a substructure model of the National Swimming Center 'Water Cube' was carried out. Two damage patterns were involved in the experiment. The test model was excited by using hammer impacts. Acceleration responses of the undamaged and damaged structure model were measured. Modal parameters were identified from the acceleration responses by utilizing the eigensystem realization algorithm (ERA). By using the developed sensor region-based method, the damage regions of the substructure model were located. The results show that the proposed method is able to effec- tively locate the damage regions. | QIAN JiaRu JI XiaoDong ZHANG WeiJing XU LongHe FU XueYi GU Lei | 2008 | Science China(Technological Sciences)2008，51，7： | 3 |
| 12 | Experimental seismic behavior of squat shear walls with precast concrete hollow moulds显示文摘This study proposes an innovative precast shear wall system, called an EVE precast hollow shear wall structure (EVE-PHSW). Precast panels in EVE-PHSW are simultaneously precast with vertical and horizontal holes. Noncontact lap splices of rebars are used in vertical joints connecting adjacent precast panels for automated prefabrication and easy in situ erection. The seismic behavior of EVE walls was examined through a series of tests on six wall specimens with aspect ratios of 1.0~1.3. Test results showed that EVE wall specimens with inside cast-in situ concrete achieved the desired “strong bending and weak shear” and failed in shear mode. Common main diagonal cracks and brittle shear failure in squat cast-in situ walls were prevented. Inside cast-in situ concrete could signifi cantly improve the shear strength and stiff ness of EVE walls. The details of boundary elements (cast-in situ or prefabricated) and vertical joints (contiguous or spaced) had little eff ect on the global behavior of EVE walls. Noncontact lap splices in vertical joints could enable EVE walls to exhibit stable load-carrying capacity through extensive deformations. Evaluation on design codes revealed that both JGJ 3-2010 and ACI 318-14 provide conservative estimation of shear strength of EVE walls, and EVE walls achieved shear strength reserves comparative to cast-in situ walls. The recommended eff ective stiff ness for cast-in situ walls in ASCE 41-17 appeared to be appropriate for EVE walls. | Han Wenlong Zhao Zuozhou Qian Jiaru Zhang Yingbao Ma Tao | 2019 | Earthquake Engineering and Engineering Vibration2019，18，4： | 3 |
| 13 | Seismic behavior of steel tube–double steel plate–concrete composite walls: Experimental tests显示文摘 | Xiaodong Ji Feiming Jiang Jiaru Qian | 2013 | Journal of Constructional Steel Research2013，，： | 2 |
| 14 | Recognition of high-specificity hERG K+ channel inhibitor-induced arrhythmia in cardiomyocytes by automated template matching显示文摘Cardiovascular disease(CVD)is the number one cause of death in humans.Arrhythmia induced by gene mutations,heart disease,or hERG K+channel inhibitors is a serious CVD that can lead to sudden death or heart failure.Conventional cardiomyocyte-based biosensors can record extracellular potentials and mechanical beating signals.However,parameter extraction and examination by the naked eye are the traditional methods for analyzing arrhythmic beats,and it is difficult to achieve automated and efficient arrhythmic recognition with these methods.In this work,we developed a unique automated template matching(ATM)cardiomyocyte beating model to achieve arrhythmic recognition at the single beat level with an interdigitated electrode impedance detection system.The ATM model was established based on a rhythmic template with a data length that was dynamically adjusted to match the data length of the target beat by spline interpolation.The performance of the ATM model under long-term astemizole,droperidol,and sertindole treatment at different doses was determined.The results indicated that the ATM model based on a random rhythmic template of a signal segment obtained after astemizole treatment presented a higher recognition accuracy(100%for astemizole treatment and 99.14%for droperidol and sertindole treatment)than the ATM model based on arrhythmic multitemplates.We believe this highly specific ATM method based on a cardiomyocyte beating model has the potential to be used for arrhythmia screening in the fields of cardiology and pharmacology. | Hao Wang Hongbo Li Xinwei Wei Tao Zhang Yuting Xiang Jiaru Fang Peiran Wu Xi Xie Ping Wang Ning Hu | 2021 | Microsystems & Nanoengineering2021，7，2： | 2 |
| 15 | Molecular Mechanism of Induction on Apoptosis of Human Esophageal Cancer HCE-4 Cells by Active Components from Astragalus membranaceus显示文摘[Objectives] To investigate the pharmacologic effects of active components from A. membranaceus on human esophageal cancer HCE-4 cells and its apoptosis mechanism. [Methods] The viabilities of HCE-4 cells were measured by MTT assay. The induction of active components from A. membranaceus on apoptosis of HCE-4 cells was detected by Annexin V-FITC/PI double staining. The apoptotic-related protein expression levels were determined by Western blotting. [Results] Formononetin and astragaloside IV suppressed the proliferation of HCE-4 cells in a dose-dependent manner. The Annexin V-FITC/PI double staining results showed that formononetin and astragaloside IV could induce HCE-4 cells apoptosis in a time-dependent manner. The Western blotting results showed that formononetin and astragaloside IV could significantly down-regulate p-AKT,pro-caspase-3,and increase cle-caspase-3 protein expression in HCE-4 cells. [Conclusions]Active components from A. membranaceus such as formononetin and astragaloside IV significantly inhibited the proliferation of human esophageal cancer HCE-4 cells by inducing mitochondrial dependent apoptosis via AKT signaling pathway. | Jiaru WANG Yinghua LUO Xianji PIAO Chang LIU Yi ZHANG Hao WANG Jinqian LI Wanting XU Yang LIU Yiqin WU Chenghao JIN | 2018 | Medicinal Plant2018，9，1： | 2 |
| 16 | A survey on one-bit compressed sensing: theory and applications显示文摘 | Zhilin LI Wenbo XU Xiaobo ZHANG Jiaru LIN | 2018 | Frontiers of Computer Science2018，12，2： | 2 |
| 17 | Unsourced Multiple Access for 6G Massive Machine Type Communications显示文摘Unsourced multiple access(UMA)is a multi-access technology for massive,low-power,uncoordinated,and unsourced Machine Type Communication(MTC)networks.It ensures transmission reliability under the premise of high energy efficiency.Based on the analysis of the 6G MTC key performance indicators(KPIs)and scenario characteristics,this paper summarizes its requirements for radio access networks.Following this,the existing multiple access models are analyzed under these standards to determine UMA's advantages for 6G MTC according to its design characteristics.The critical technology of UMA is the design of its multiple-access coding scheme.Therefore,the existing UMA coding schemes from different coding paradigms are further summarized and compared.In particular,this paper comprehensively considers the energy efficiency and computational complexity of these schemes,studies the changes of the above two indexes with the increase of access scale,and considers the trade-off between the two.It is revealed by the above analysis that some guiding rules of UMA coding design.Finally,the open problems and potentials in this field are given for future research. | Yuanjie Li Jincheng Dai Zhongwei Si Kai Niu Chao Dong Jiaru Lin Sen Wang Yifei Yuan | 2022 | China Communications2022，19，3： | 2 |
| 18 | MIMO Capacity Bounds with Doubly Correlated Rician Channel in Geometrical Channel Model显示文摘 | Li Yonghua He Zhiqiang Lv Tiejun Lin Jiaru | 2010 | China Communications2010，7，5： | 2 |
| 19 | Analysis of China's Oil and Gas Policy in 2015显示文摘The reforms in oil and gas sector have been accelerated in 2015. The reform of mineral rights has begun and 6 oil and gas exploration zones in Xinjiang Autonomous Region have served as the tender pilots, breaking through the requirements on the resources varieties, exploration phase and enterprise qualification. The right of importing and using of the crude oil has been gradually relaxed and 13 local refineries have obtained the right to use imported crude oil of 55.1888 million tons per year. The natural gas price for non-residential use was unified and a universal price was set for the incremental supply and existing supply. The Shanghai Petroleum and Gas Exchange(SHPGX) was established and laid foundation for the market mechanism to determine the price. The government governance has undergone continuous adjustments such as regulating the tax instead of charging the fees, streamlining administration and delegating power to the lower levels.The Guidelines on Deepening the Reform of State-owned Enterprises was released, symbolizing the accomplishment of the overall planning of the SOE reform. | Chen Jiaru | 2016 | China Oil & Gas2016，23，1： | 1 |
| 20 | Semi-Implantable Bioelectronics显示文摘Developing techniques to effectively and real-time monitor and regulate the interior environment of biological objects is significantly important for many biomedical engineering and scientific applications, including drug delivery, electrophysiological recording and regulation of intracellular activities. Semi-implantable bioelectronics is currently a hot spot in biomedical engineering research area, because it not only meets the increasing technical demands for precise detection or regulation of biological activities, but also provides a desirable platform for externally incorporating complex functionalities and electronic integration. Although there is less definition and summary to distinguish it from the well-reviewed non-invasive bioelectronics and fully implantable bioelectronics, semi-implantable bioelectronics have emerged as highly unique technology to boost the development of biochips and smart wearable device. Here, we reviewed the recent progress in this field and raised the concept of “Semi-implantable bioelectronics”, summarizing the principle and strategies of semi-implantable device for cell applications and in vivo applications, discussing the typical methodologies to access to intracellular environment or in vivo environment, biosafety aspects and typical applications. This review is meaningful for understanding in-depth the design principles, materials fabrication techniques, device integration processes, cell/tissue penetration methodologies, biosafety aspects, and applications strategies that are essential to the development of future minimally invasive bioelectronics. | Jiaru Fang Shuang Huang Fanmao Liu Gen He Xiangling Li Xinshuo Huang Hui-jiuan Chen Xi Xie | 2022 | Nano-Micro Letters2022，14，7： | 1 |
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