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Grating Interference Ultra-Precision Measurement Technology Applied to High-End Equipment 认领 引用 被引量：1
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作者 Hongzhong Liu Bingheng Lu Zhuangde Jiang 《Engineering》 SCIE EI CSCD 2026年第6期333-353,共21页
This paper presents a comprehensive review of the development and advancements in ultra-precision grating displacement sensors,emphasizing their fundamental measurement theories,technology evolu-tions,device developme... This paper presents a comprehensive review of the development and advancements in ultra-precision grating displacement sensors,emphasizing their fundamental measurement theories,technology evolu-tions,device development,current applications,and future trends.Grating displacement sensors,utiliz-ing optical interference and photoelectric conversion principles,deliver exceptional resolution and accuracy,making them vital in high-precision fields such as semiconductor manufacturing,aerospace,advanced metrology,and microfabrication.The review examines key innovations in grating sensor tech-nologies,including the integration of digital interference measurement methods,advanced signal demodulation techniques,and the application of pseudo-random binary codes for absolute displacement measurements.Furthermore,the paper assesses the impact of novel materials,sensor designs,and minia-turization on sensor performance,particularly in enhancing sensitivity,reducing environmental suscep-tibility,and improving long-term stability.A comparison of domestic and international research progress in grating sensor technologies is provided,identifying critical gaps and emerging research areas.Looking ahead,the outlook for the field underscores the potential for integration into digital twin techniques,arti-ficial intelligence(AI),and hybrid sensor systems that combine displacement measurement with other sensing capabilities.The paper concludes by addressing challenges in the field,such as improving the signal-to-noise(SNR)ratio,enhancing sensor integration,and reducing production costs,while also spotlighting opportunities for further innovations to meet the escalating demands for ultra-precision measurements in next-generation manufacturing and other advanced applications.This review aims to provide a thorough understanding of the current state of ultra-precision grating displacement sensors and their potential to shape the future of high-precision measurement technologies. 展开更多
关键词 Grating displacement sensors Optical interference Ultra-precision measurement Advanced manufacturing Signal processing
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Combined effects of interference fit size and installation speed on fatigue property of CFRP/Ti double-lap joint with interference bushing 认领 引用
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作者 Yingjiang GUO Zengqiang CAO +5 位作者 Shuaijia KOU Minghao ZHANG Lu YAN Xinglong GONG Yuanzhuo HE Lubin HUO 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第7期401-421,共21页
The application of interference bushings in Carbon Fiber Reinforced Polymer(CFRP)joints has demonstrated significant potential in enhancing fatigue life performance.However,the lack of in-depth research on key install... The application of interference bushings in Carbon Fiber Reinforced Polymer(CFRP)joints has demonstrated significant potential in enhancing fatigue life performance.However,the lack of in-depth research on key installation process parameters—particularly interference fit size and installation speed—has limited broader application of this technique.To fill in this gap,this study designed a series of experiments to investigate the effects of these two parameters on the fatigue performance of CFRP/Ti double-lap joints.This study utilized stress wave separation technology to accurately measure the installation displacement,speed,and resistance under varying installation speeds.Real-time structural damage monitoring was conducted through circumferential strain measurements and acoustic emission analysis.By establishing a correlation among installation parameters,damage characteristics,and fatigue life outcomes,the study reveals that a smaller interference fit size combined with a higher installation speed can effectively reduce installationinduced damage and significantly enhance joint fatigue performance. 展开更多
关键词 Acoustic emission CFRP/Ti joints Fatigue life Installation speed Interference bushing Interference fit size
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Fractal-Based Acoustic Metamaterials Coupling with Micro-Perforation for Low-Frequency Sound Absorption 认领 引用
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作者 Dongxing Cao Liming Wang +3 位作者 Junru Wang Jianfei Wang Xiangying Guo Shuai Huang 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2026年第2期201-217,共17页
Acoustic metamaterials(AMs)exhibit outstanding sound absorption performance due to their customizable design.In this work,a low-frequency sound-absorbing metamaterial plate,which combines a fractal-based labyrinth aco... Acoustic metamaterials(AMs)exhibit outstanding sound absorption performance due to their customizable design.In this work,a low-frequency sound-absorbing metamaterial plate,which combines a fractal-based labyrinth acoustic metamaterial(FLAM)and a micro-perforation panel,is proposed.The theoretical,simulation,and experimental methods are used to comprehensively examine the sound absorption performance.A triangular fractal curve is first introduced,and the combined FLAM model is constructed.An equivalent straight channel model is developed to study the effects of the structural parameters on the sound absorption coefficients.The finite element analysis(FEA)is further conducted to validate the theoretical results.All the findings indicate that the proposed combined FLAM exhibits excellent sound absorption performance at a deep sub-wavelength scale,with absorption coefficients of 0.89,0.98,and 1.00 for the first three fractal orders,respectively.Finally,the prototypes are fabricated,and the impedance tube experiments are conducted,yielding results that align closely with both analytical and FEA results.Notably,the sound absorption performance of large-area sound-absorbing plates is also investigated by splicing two/four FLAMs together,demonstrating a relative absorption bandwidth exceeding 35%.This work offers a viable alternative to low-frequency sound-absorbing materials for potential engineering applications. 展开更多
关键词 Fractal-based acoustic metamaterial(AM) Low-frequency sound absorption Deep sub-wavelength Impedance tube experiment
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Low-frequency signal inversion and reconstruction via the spatial structure regularization 认领 引用
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作者 Wei-wei Gu Hao Li +2 位作者 Dong-feng Zhao Peng-fei Wang Guo-fa Li 《Applied Geophysics》 SCIE CSCD 2026年第1期125-137,429,共13页
Low-frequency signals play a crucial role in seismic inversion of thin-layer structure and reservoir prediction.However,during seismic exploration,the low-frequency signals are often contaminated,distorted,or even mis... Low-frequency signals play a crucial role in seismic inversion of thin-layer structure and reservoir prediction.However,during seismic exploration,the low-frequency signals are often contaminated,distorted,or even missing due to acquisition limitations,processing artifacts,and ambient noise.Although compressive sensing theory-based sparse inversion can partially recover low-frequency signals,the reconstruction results suffer from significant non-uniqueness.To address this challenge,we propose a sparse inversion approach incorporating spatial structural regularization to enhance low-frequency signal recovery.Due to the interference among seismic waveforms,spatial reflection structure exhibits frequency dependency.Consequently,the spatial structure estimated directly from seismic data differs significantly from the actual low-frequency spatial structure.Therefore,the proposed method estimates spatial reflection structure from seismic data in the neighboring frequency band of the low-frequency signals to be recovered,aiming to reduce the impact of frequency dependency on estimation accuracy.Subsequently,both the sparse structure of reflection coefcients and spatial structure of low-frequency signals are incorporated as regularization terms into the inversion framework,enabling geologically guided recovery of low-frequency components.The proposed method was successfully applied in the Tarim Oileld,eectively restoring low-frequency signals and providing reliable foundational seismic data for reservoir prediction. 展开更多
关键词 Spatial structure Structure tensor Low-frequency signals Sparse inversion
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Dynamic evolution of stress interference during the multi-layer exploitation of sand-shale interacted continental shale oil reservoirs 认领 引用
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作者 Qi-Xing Zhang Bing Hou +2 位作者 Liao-Yuan Zhang Bin-Tao Zheng Zhen-Yu Wang 《Petroleum Science》 SCIE EI CAS CSCD 2026年第6期3384-3407,共24页
Accurate prediction of stress evolution induced by production pressure depletion after hydraulic fracturing is essential for efficient development of stacked continental shale reservoirs.This study establishes a three... Accurate prediction of stress evolution induced by production pressure depletion after hydraulic fracturing is essential for efficient development of stacked continental shale reservoirs.This study establishes a three-dimensional stress sensitivity and flow coupling framework to characterize intra-layer and interlayer stress evolution during shale oil development.A 3D discrete fracture network(DFN)integrating hydraulic and natural fractures was reconstructed from microseismic data obtained during multi-layer fracturing.Based on this,a stress sensitivity model for interbedded sandstone-shale reservoirs and a V-shaped well layout flow model was developed to simulate single-layer(three-well)and three-layer(nine-well)production scenarios.The reconstructed fracture network revealed that hydraulic fractures propagate laterally away from the zipper fracturing side and vertically upward toward low-pressure zones.During multi-layer development on Platform H,fracture intersections between the middle and adjacent layers produced 0-3 MPa pore pressure interference under different production schedules,indicating the need for optimized inter-well and interlayer spacing.Sandstone layers,characterized by higher permeability and porosity,exhibited a greater increase in horizontal stress difference(2.61 MPa)than shale layers(<0.5 MPa).Stress reorientation angles ranged from 5°to 38°in shale and from 16°to 64°in sandstone layers.These results demonstrate that well spacing should be larger in sandstone layers,whereas infill drilling is more suitable within shale intervals.The proposed modeling and analysis approach provides a theoretical and technical basis for optimizing well pattern deployment and maximizing energy utilization in shale oil reservoir development. 展开更多
关键词 Hydraulic fracturing Multi-layer exploitation Sand-shale interbedded layers Geomechanical modeling Interlayer stress interference
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A Stretchable Sandwich Composite Film With Ultra-Broadband Electromagnetic Interference Shielding and High-Performance Photothermal Conversion Capability 认领 引用
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作者 Dan Guo Donglei Li +7 位作者 Bochong Wang Jianyong Xiang Anmin Nie Yingchun Cheng Kun Zhai Tianyu Xue Fusheng Wen Congpu Mu 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期716-728,共13页
With the rapid growth demand for advanced integrated electronic systems,lightweight flexible electromagnetic interference(EMI)shielding films integrated with functional properties,such as excellent mechanical properti... With the rapid growth demand for advanced integrated electronic systems,lightweight flexible electromagnetic interference(EMI)shielding films integrated with functional properties,such as excellent mechanical properties and self-healing capability,are a research focus in high-tech functional materials.Herein,a sandwich-structured aramid nanofibers/silver nanoparticles/waterborne polyurethane(ANF/AgNPs/WPU,AAgW)composite film is fabricated using microwave synthesis combined with spin-coating.AAgW composite film exhibits excellent stretchability,exceptional EMI shielding effectiveness(SE)in the frequency range of 6.0-60.0 GHz,and effcient photothermal conversion.AAgW film exhibits outstanding mechanical properties with a fracture strain of 406.4%.Notably,EMI SE of 40 dB is achieved in an ultra-wide frequency range of 6.0-60.0 GHz when the thickness of AAgW composite film is only 26.0μm.After 100 stretching cycles at 35%strain,the average SE in the X-band remains at 19.6 dB.In addition,the AAgW film possesses an active heating ability through photothermal conversion,and its surface saturation temperature can reach 71℃under a one-sun illumination.The integration of the"shielding-heating"function provides a brand-new solution for simultaneously achieving stretchable ultra-wideband EMI shielding and photothermal conversion.This work shows great promise for applications in advanced wearable devices and high-frequency communication terminals. 展开更多
关键词 electromagnetic interference shielding photothermal conversion silver nanoparticles spin-coating stretch waterborne polyurethane
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High-fidelity full-color self-interference incoherent digital holography via quarter-wave geometric phase optics 认领 引用
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作者 Jae-Won Lee Jin-Hyeok Seo +4 位作者 Jung-Yeop Shin Jing-Wen Bu Kihong Choi Keehoon Hong Hak-Rin Kim 《Opto-Electronic Advances》 SCIE EI CAS CSCD 2026年第1期49-64,共16页
We present a compact self-interference incoherent digital holography(SIDH)system that incorporates a quarter-waveplate(QWP)-based geometric phase(GP)lens to achieve high-fidelity,full-color holographic imaging under b... We present a compact self-interference incoherent digital holography(SIDH)system that incorporates a quarter-waveplate(QWP)-based geometric phase(GP)lens to achieve high-fidelity,full-color holographic imaging under broadband incoherent illumination.Traditional SIDH systems that utilize half-waveplate(HWP)-based GP lenses are hindered by unavoidable triple-wavefront polarization interference,stemming from chromatic dispersion in phase retardation.This interference introduces color-dependent artifacts in the reconstructed images.In contrast,our QWP-based design inherently suppresses such interference by using the non-diffracted beam as the reference,enabling stable dual-wavefront modulation.This approach produces phase-encoded polarization interference patterns that remain spectrally consistent across the red,green,and blue(RGB)channels.Experimental results demonstrate substantial noise suppression and significantly improved full-color image fidelity,supported by channelspecific noise analysis and structural similarity metrics.The system also preserves a simplified optical configuration without active polarization control,allowing for compact integration and cost-effective fabrication.These advantages position the proposed QWP-GP SIDH architecture as a promising solution for portable,real-time digital holographic 3D imaging,with scalable potential in applications such as augmented reality,optical diagnostics,and spectral holography. 展开更多
关键词 self-interference incoherent digital holography digital holography geometric phase lens polarization interference holographic imaging
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Hierarchical Modular Architecture Enabling Intelligent Dynamic Thermal Management and Superior Electromagnetic Interference Shielding 认领 引用
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作者 Qi‑Fan Xuan Pei‑Yan Zhao +7 位作者 Hualong Peng Shan Zhang Bo Cai Fang‑Yu Niu Martin CKoo Xiao‑Bo Sun Xiangyu Jiang Guang‑Sheng Wang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第8期816-830,共15页
Integrated wearable thermal management technologies have greatly enhanced human adaptability to complex environments.However,conventional thermal management strategies,which lack environmental risk perception and stab... Integrated wearable thermal management technologies have greatly enhanced human adaptability to complex environments.However,conventional thermal management strategies,which lack environmental risk perception and stable human-machine interaction,are increasingly inadequate for ensuring personal health.Here,we introduce a hierarchical modular design strategy to develop a wearable intelligent thermal management film with robust electromagnetic interference(EMI)shielding capabilities.A sensitive biomimetic serpentine dual-mode temperature-humidity sensing module is coupled with a low-power electro-/photothermal conversion module to enable intelligent thermal regulation.The resulting thermal management system offers stable and sensitive front-end temperature-humidity monitoring,alongside low-power electrothermal(51.79℃ at 1.5 V)and photothermal(56.38℃ at 45.51 mW cm−2)temperature regulation capabilities.Additionally,the system exhibits outstanding EMI shielding performance,with an EMI SE value of 1600 dB mm-1 at a thickness of just 35μm,ensuring stable signal transmission.The hierarchical modular design enables functional allocation with higher,thereby optimizing material performance while enhancing the decoupling and synergistic effects between different functionalities.These findings provide a scalable and practical pathway for the multifunctional integration and performance optimization of next-generation flexible wearable electronic composites. 展开更多
关键词 MXene Hierarchical modular design Thermal management Temperature-humidity sensing Electromagnetic interference shielding
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Low-Frequency Ultrasonic Array Imaging of Interlayer Voids Hidden in Ballastless Track Structure of High-Speed Railway 认领 引用
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作者 Guopeng Fan Xuefeng Chen +1 位作者 Hao Liu Jiaqing Zheng 《Structural Durability & Health Monitoring》 EI 2026年第4期88-117,共30页
Low-frequency ultrasonic array is commonly used to detect interlayer voids located in high-speed railway ballastless track,which is a typical multilayer concrete bonded structure.The difficulty of detection lies in th... Low-frequency ultrasonic array is commonly used to detect interlayer voids located in high-speed railway ballastless track,which is a typical multilayer concrete bonded structure.The difficulty of detection lies in the fact that the total focusingmethod(TFM)based on a single fixed sound velocity model cannot adapt to the acoustic propagation characteristics of multilayer structures,which is prone to generating artifacts.In addition,the long duration of lowfrequency ultrasonic pulses is prone to causing significant deviations in defect localization.To address these issues,a theoretical model of the layered bonded structure is proposed.The acoustic wave propagation path and travel time calculation are clarified after combining the Fermat’s principle and Snell’s law,and the shortest path ray tracing(SPRT)is proposed,which achieves visual imaging of interlayer voids;The pulse peak delay(PPD)is applied to correct the travel time of low-frequency ultrasonic waves,and the shortest path ray tracing combined with pulse peak delay(PSPRT)is proposed,which significantly improves the localization accuracy of defects.Finally,by integrating the amplitude and phase information of scattered signals,the shortest path ray tracing based on pulse peak delay and sign coherence factor(PPSPRT)is constructed,which significantly enhances the SNR.The test results show that,compared with the conventional TFM,the proposed PPSPRT achieves average SNR improvements of 6.62 dB in numerical simulations and 14.30 dB in field tests,and reduces the average depth localization error of interlayer voids to merely 23.49%and 10.38%of that of TFM under corresponding test conditions,respectively.PPSPRT can provide important guidance for accurate imaging of interlayer voids. 展开更多
关键词 Low-frequency ultrasonic array interlayer voids bonded structure ray tracing localization accuracy
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Hierarchical Manufacturing of Anisotropic and High-Efficiency Electromagnetic Interference Shielding Modules for Smart Electronics 认领 引用
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作者 Shaohong Shi Siwen Deng +6 位作者 Yuheng Jiang Jiabin Chen Lukas Sporrer Fangchao Cheng Quanquan Guo Jingjing Jing Yinghong Chen 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第6期125-139,共15页
To shield electronics from complicated electromagnetic environments caused by wireless electromagnetic waves,achieving elaborately structural manufacturing while not sacrificing electromagnetic interference shielding ... To shield electronics from complicated electromagnetic environments caused by wireless electromagnetic waves,achieving elaborately structural manufacturing while not sacrificing electromagnetic interference shielding performances remains crucial challenges.Herein,we propose a hierarchical manufacturing method that combines the use of 3D printing shear flow field and layer-by-layer assembly for fabricating the structurally customizable and multifunctional polylactic acid@graphene nanoparticle(PLA@GNs)materials.The dynamic behavior of polymer fluids is firstly explored via computational fluid dynamic simulation,and a Weissenberg number is employed to quantitatively analyze the disordered-to-ordered structural evolution of molecular chains and nanoparticles,allowing to tailor the micro-scale ordered structures.Subsequently,the macro-scale 3D architectures of PLA@GNs modules are fabricated by layer-by-layer assembly.Owing to the aligned GNs,the shielding performance reaches 41.2 d B,simultaneously accompanied by a directional thermal conductivity of 3.2 W m-1K-1.Moreover,the potential application of 3D-printed shielding modules in specific civilian frequency bands such as 4G(1800–2100 MHz),Bluetooth(2402–2480 MHz),and 5G(3300–3800 MHz)is fully demonstrated.Overall,this work not only establishes a universal methodology about 3D printing shear flow field-driven orientation of two-dimensional nanoparticles within polymer fluids,but also gives a scientific method for advanced manufacturing of the next-generation electromagnetic functional modules for smart electronics. 展开更多
关键词 3D printing Graphene nanoparticles Hierarchical manufacturing Electromagnetic interference shielding Thermal management
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Inter-hole interference with creep behavior of inclined film cooling holes in complex temperature fields 认领 引用
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作者 Dongxu ZHANG Fengru ZENG +2 位作者 Menghui LV Song WU Zhixun WEN 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第5期364-381,共18页
This study explores the inter-hole interference with the creep behavior of film cooling holes in nickel-based single crystal superalloys under complex temperature fields through combined Conjugate Heat Transfer(CHT)an... This study explores the inter-hole interference with the creep behavior of film cooling holes in nickel-based single crystal superalloys under complex temperature fields through combined Conjugate Heat Transfer(CHT)and Crystal Plasticity Finite Element Method(CPFEM)simulations.The investigation focuses on analyzing the stress distribution around the holes and rupture paths under complex flow conditions.Results show that as the blowing ratio increases,the primary rupture path among multiple holes gradually migrates from the holes in the central region under a uniform temperature field to the holes at the edges.Under the inter-hole interference of the temperature field,the temperature gradient along the wall thickness direction decreases,while the temperature gradient between holes increases.This results in higher temperatures at the edge holes compared to those at the center,leading to reduced creep resistance at the edges.The inter-hole interference of the stress field causes a cold-end stress concentration due to the temperature gradients inside and between the holes,which increases with time.The inter-hole interference of the temperature and stress field jointly governs the creep rupture behavior of the film cooling holes. 展开更多
关键词 Creep behavior Crystal plastic finite element method Inter-hole interference Nickel-based single crystal Rupture path
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Interference of beef matrix in the magnetic separation of Escherichia coli O157:H7 by immunomagnetic beads and the underlying mechanism 认领 引用
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作者 Juan Du Jiangli Guo +2 位作者 Yifan Kang Yijie Li Yanhong Bai 《Food Quality and Safety》 SCIE CAS CSCD 2026年第2期545-556,共12页
Escherichia coli O157:H7 is a major food safety hazard in beef processing and products,and it can even cause death in severe cases.Immunomagnetic separation(IMS) is an effective sample pretreatment strategy for isolat... Escherichia coli O157:H7 is a major food safety hazard in beef processing and products,and it can even cause death in severe cases.Immunomagnetic separation(IMS) is an effective sample pretreatment strategy for isolating and enriching target bacteria from food samples,increasing the sensitivity and accuracy of the assay.In this study,an IMS method for E.coli O157:H7,a key safety factor in beef processing and products,was developed,and the interference of the beef matrix was studied.The developed method was highly specific and showed a capture efficiency of 99.98%±1.65% for E.coli O157:H7 in a buffer system,but it decreased significantly in beef samples,which indicated that the matrix has a negative effect on the IMS.By investigating the structure–function relationship between the physicochemical properties of beef and magnetic separation efficiency,sarcoplasmic and myofibrillar proteins were found to be the primary factors affecting IMS efficiency in a dose-dependent manner.Proteins can alter the probe surface,lowering antibody loading and target-binding affinity and ultimately reducing IMS magnetic separation efficiency.Our study provides a theoretical basis for optimizing IMS pre-treatment protocols and enables the development of targeted strategies to mitigate protein-mediated interference,thereby enhancing the sensitivity and reliability of E.coli O157:H7 detection in ground beef. 展开更多
关键词 Escherichia coli O157:H7 immunomagnetic separation beef myofibrillar protein sarcoplasmic protein interference mechanism
Ultrahigh Electromagnetic Interference Shielding and Integrated Thermal Sensing-encryption Enabled by a Honeycomb-inspired Multifunctional Foam 认领 引用 被引量：1
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作者 Shao-Peng Yu Ya Liu +4 位作者 Ming-Yu Hao Xin Zhang Xu Zhang Yi-Cheng Yuan Zhen-Xiu Zhang 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第2期513-524,I0016,共12页
With the rapid development of intelligent electronic and military equipment,multifunctional flexible materials that integrat electromagnetic interference(EMI)shielding,temperature sensing,and information encryption ar... With the rapid development of intelligent electronic and military equipment,multifunctional flexible materials that integrat electromagnetic interference(EMI)shielding,temperature sensing,and information encryption are urgently required.This study presents a bio-inspired hierarchical composite foam fabricated using supercritical nitrogen foaming technology.This material exhibits a honeycomb structure,with pore cell sizes controllable within a range of 30–92μm by regulating the filler.The carbon fiber felt(CFf)provides efficient reflection of electromagnetic waves,while the chloroprene rubber/carbon fiber/carbon black foam facilitates both wave absorption and temperature monitoring through its optimized conductive network.This synergistic mechanism results in an EMI shielding effectiveness(SE)of 60.06 d B with excellent temperature sensing performance(The temperature coefficient of resistance(TCR)is-2.642%/℃)in the 24–70℃ range.Notably,the material has a thermal conductivity of up to 0.159 W/(m·K),and the bio-inspired layered design enables information encryption,demonstrating the material's potential for secure communication applications.The foam also has tensile properties of up to 5.13 MPa and a tear strength of 33.02 N/mm.This biomimetic design overcomes the traditional limitations of flexible materials and provides a transformative solution for next-generation applications such as flexible electronics,aerospace systems and military equipment,which urgently need integrated electromagnetic protection,thermal management and information security. 展开更多
关键词 Flexibility Cellular structures Electromagnetic interference shielding Temperature sensor Message encryption
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Beyond the surface:Advancing neurorehabilitation with transcranial temporal interference stimulation——clinical applications and future prospects 认领 引用 被引量：1
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作者 Camille E.Proulx Friedhelm C.Hummel 《Neural Regeneration Research》 SCIE CAS CSCD 2026年第5期1987-1988,共2页
Brain lesions,such as those caused by stroke or traumatic brain injury(TBI),frequently result in persistent motor and cognitive impairments that significantly affect the individual patient's quality of life.Despit... Brain lesions,such as those caused by stroke or traumatic brain injury(TBI),frequently result in persistent motor and cognitive impairments that significantly affect the individual patient's quality of life.Despite differences in the mechanisms of injury,both conditions share a high prevalence of motor and cognitive impairments.These deficits show only limited natural recovery. 展开更多
关键词 neurorehabilitation stimulation transcranial temporal interference motor cognitive impairments brain lesionssuch motor cognitive impairmentsthese
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Enhancement of rectification by quantum interference in co-oligomer molecular diodes 认领 引用
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作者 Han-Shuang Zhang Han Ma +4 位作者 Hui-Qing Zhang Xiao-Bei Zhang Jun-Feng Ren Guang-Ping Zhang Gui-Chao Hu 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第4期664-670,共7页
We investigate the rectification property theoretically in co-oligomer diodes integrating a destructive quantum interference(DQI)feature.The results demonstrate that compared to a similar co-oligomer diode without DQI... We investigate the rectification property theoretically in co-oligomer diodes integrating a destructive quantum interference(DQI)feature.The results demonstrate that compared to a similar co-oligomer diode without DQI,the rectification ratio is enhanced by one order of magnitude in the presence of the DQI feature.Mechanism analysis indicates that the high rectification ratio benefits from the strong suppression of transmission in the off-state of the diode by the DQI dip.The strong rectification is attributed to the distinctly asymmetric shift of the DQI dip under bias voltages,which comes out as a result of both bias-induced shift of eigenvalues and redistribution of wave functions of all orbitals.The effect of energy level alignment between the two segments of the co-oligomer on the rectification is also discussed.This work provides a valid way to enhance the performance of intrinsic co-oligomer diodes,a promising approach for molecular circuit design. 展开更多
关键词 quantum interference molecular rectification co-oligomer
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Customized acousto-mechanical metastructure for broadband low-frequency sound absorption and vibration isolation via optimization design 认领 引用
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作者 Zonghan Li Changzhi Hu +1 位作者 Zhiwen Ren Mingji Chen 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第5期596-611,共16页
The demand for noise and vibration control in aerospace and vehicle manufacturing is increasing,but reliable design strategies are still lacking.Here,an integrated acousto-mechanical metastructure is proposed to reali... The demand for noise and vibration control in aerospace and vehicle manufacturing is increasing,but reliable design strategies are still lacking.Here,an integrated acousto-mechanical metastructure is proposed to realize broadband lowfrequency sound absorption and vibration isolation simultaneously.Due to the introduction of bistable substructures,the proposed metastructure achieves quasi-zero stiffness vibration isolation and sound energy dissipation without external loads.Rapid customized design of the optimized metastructure is achieved by the proposed optimization algorithm.An average sound absorption coefficient of 0.8 is realized by optimization design within the frequency range of 350 Hz to 800 Hz.In addition,the proposed acousto-mechanical metastructure exhibits ultra-low broadband vibration isolation performance,with an initial isolation frequency of 40.4 Hz.Theoretical calculations,numerical simulations,and experimental results show that the acoustic performance of the metastructure benefits from the intensive mode density brought by multiple geometric degrees of freedom,while its vibration isolation performance originates from the quasi-zero stiffness beams.Overall,a multi-objective optimization method under a given structural design domain is proposed to optimize the multifunctional metastructure. 展开更多
关键词 Acousto-mechanical metastructure Non-local resonator Sound absorption Vibration isolation Broadband low-frequency
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Carbon Material Films for Flexible and Efficient Electromagnetic Interference Shielding:A Review 认领 引用
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作者 Yu-Xin Chen Ding Zhang +8 位作者 Shi-Ting Wu Yun-Fan Yang Wei-Xue Meng Zhao-Yun Lin Yan Zhang Feng-Mei Guo Ying-Jiu Zhang Yuan-Yuan Shang An-Yuan Cao 《Rare Metals》 SCIE EI CAS CSCD 2026年第1期1-38,共38页
With the rapid development of technology such as the Internet and electronic devices,electromagnetic radiation pollution has become an increasingly prominent issue,which negatively impacts both human health and the no... With the rapid development of technology such as the Internet and electronic devices,electromagnetic radiation pollution has become an increasingly prominent issue,which negatively impacts both human health and the normal operation of equipment.Especially with the rise of wearable and portable electronic devices,flexible and efficient electromagnetic interference(EMI)shielding materials are increasingly demanded.Flexible carbon-based films,with their unique characteristics of high conductivity,good chemical stability,and excellent bending property,ensure stable EMI shielding effectiveness for equipment even under frequent bending and other conditions.In recent years,carbon-based films have been studied in the field of EMI shielding with significant progress,particularly through the elegant design of various structures,such as the construction of porous structures,layered structures,and nanocomposite structures.This review primarily explores the importance of structural design in carbon material films and provides an explanation of the principles of EMI shielding,including the types of carbonbased films,their fabrication methods,and the critical role of internal structural design.In addition,this review also analyzes the advantages of various carbon materials and their suitable structural forms,and based on the current state of research,discusses the future development directions and challenges of flexible carbon material films. 展开更多
关键词 carbon-based film electromagnetic interference shielding flexibility structure design
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Synergistic Effect of MOF@CMC-Derived Magnetic Nanocomposites:Enhancing Electromagnetic Interference Shielding and Joule Heating 认领 引用
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作者 Yingjie Xu Maoye Yu +4 位作者 Jianzhong Guo Xiaofan Ma Shaohua Jiang Mingdeng Wei Lin Chen 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期825-835,共11页
Emerging as attractive alternatives for sustainable,low-cost,and high-performance electromagnetic interference(EMI)shielding,biomass-derived carbon is nonetheless constrained by a limited repertoire of shielding mecha... Emerging as attractive alternatives for sustainable,low-cost,and high-performance electromagnetic interference(EMI)shielding,biomass-derived carbon is nonetheless constrained by a limited repertoire of shielding mechanisms.Herein,a straightforward method was employed to synthesize self-supporting Co nanoparticles embedded in porous N-doped carbon(Co@PNC)composite,which is derived from a film of Co-MOF and sodium carboxymethyl cellulose(Co-MOF@CMC).Benefiting from the synergistic effects between the three-dimensional conductive network formed by porous N-doped carbon and the embedded Co nanoparticles,the Co@PNC composite incorporates abundant heterogeneous interfaces,which collectively enhance both dielectric loss and magnetic losses.Among them,the Co@PNC-3 composite exhibited an exceptional average EMI shielding effectiveness(SE)of 63.5 dB in the X-band at a thickness of 1.2 mm,effectively attenuating 99.99996%of the incident electromagnetic waves.Additionally,it possesses a low density(0.199 g cm-3),with a specific EMI shielding effectiveness value as high as 2496.1 dB cm2 g-1.Meanwhile,the Co@PNC-3 composite demonstrated efficient electro-thermal conversion capabilities,rapidly reaching 158.5℃under a low driving voltage of 4 V,along with excellent flame-retardant properties.This study provides a simple,green,and feasible strategy for the preparation of cellulose-derived composites with high EMI shielding effectiveness and multifunctional properties. 展开更多
关键词 carbon network Co nanoparticle electromagnetic interference shielding MOF@cellulose
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Second-order correlated interference with multi-wavelength thermal-light beams 认领 引用
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作者 De-Sheng Wang Yi-Ning Zhao +5 位作者 Lingxin Kong Su-Heng Zhang Chong Wang Cheng Ren Yuehua Su De-Zhong Cao 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第2期374-382,共9页
A method for correlating thermal light over a wide spectral range is proposed.A multi-wavelength pseudothermal source,prepared by projecting laser beams of multiple wavelengths(650 nm,635 nm,532 nm,and 473 nm)onto a m... A method for correlating thermal light over a wide spectral range is proposed.A multi-wavelength pseudothermal source,prepared by projecting laser beams of multiple wavelengths(650 nm,635 nm,532 nm,and 473 nm)onto a moving thin ground glass plate,is employed in a double-slit interference experiment.The ground glass plate induces random phase differences between light beams of different wavelengths passing through it.This initial random phase difference significantly influences the high-order intensity correlation functions of multi-wavelength thermal beams.Experimentally,second-order correlated interference patterns,including subwavelength interference,of pseudothermal beams with different wavelengths are observed in the intensity correlation measurements.This method facilitates applications of correlated thermal photons in quantum information processing and quantum imaging. 展开更多
关键词 correlated interference multi-wavelength thermal light second-order correlation function
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Altered amplitudes of low-frequency fluctuations in primary open angle glaucoma patients:a resting-state fMRI study 认领 引用
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作者 Yi Huang Hong-Dou Luo +7 位作者 Yong-Qiang Shu Feng Ouyang Yu-Ning Song Yuan-Yuan Wang Xue-Qing Yu Chan Xiong Lu Yang Xu Zhang 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2026年第2期291-301,共11页
AIM:To study the relationships between amplitude of low-frequency fluctuations(ALFF)changes and clinical ophthalmic parameters in patients with primary open angle glaucoma(POAG)and analyze the diagnostic value of ALFF... AIM:To study the relationships between amplitude of low-frequency fluctuations(ALFF)changes and clinical ophthalmic parameters in patients with primary open angle glaucoma(POAG)and analyze the diagnostic value of ALFF.METHODS:Twenty-four POAG patients and 24 healthy controls(HCs)underwent resting-state functional magnetic resonance imaging(rs-fMRI).Nonparametric rank-sum tests were used to compare the ALFF values in the slow-4 and slow-5 bands,and Spearman or Pearson correlation analysis was used to assess the correlation between ALFF changes and clinical ophthalmic parameters in POAG patients.Receiver operating characteristic(ROC)curves were used to evaluate the diagnostic performance of the ALFF.RESULTS:There were 16 males in POAG patients(median age 48y)and 12 males in HCs(median age 39y).Compared with HCs,POAG patients presented increased or decreased ALFF values in different brain regions,and similar changes were observed in mild POAG patients.The ALFF values were correlated with retinal nerve fiber layer(RNFL)thickness,inner limiting membrane-retinal pigment epithelium thickness changes and the degree of visual field defects.Analysis of the diagnostic value of the ALFF via ROC curves revealed that the right medial frontal gyrus[area under the curve(AUC)=0.9063]and superior frontal gyrus(AUC=0.9097)had better diagnostic value than did the optic disc area(AUC=0.8019),visual field index(VFI%,AUC=0.8988)and macular parameters.CONCLUSION:POAG patients present altered cortical function that is significantly correlated with the optic nerve and retinal thickness and had good diagnostic value,which may reflect the underlying neuropathological mechanism of POAG. 展开更多
关键词 primary open angle glaucoma restingstate functional magnetic resonance imaging low-frequency amplitude neurodegenerative disease
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