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Estimation of co-channel interference between cities caused by ducting and turbulence 认领 引用
1
作者 Kai Yang Zhensen Wu +4 位作者 Xing Guo Jiaji Wu Yunhua Cao Tan Qu Jiyu Xue 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第2期293-307,共15页
With the rapid development of the fifth-generation(5 G)mobile communication technology,the application of each frequency band has reached the extreme,causing mutual interference between different modules.Hence,there i... With the rapid development of the fifth-generation(5 G)mobile communication technology,the application of each frequency band has reached the extreme,causing mutual interference between different modules.Hence,there is a requirement for detecting filtering and preventing interference.In the troposphere,over-the-horizon propagation occurs in atmospheric ducts and turbulent media.The effects of both ducting and turbulence can increase the probability of occurrence of long-distance co-channel interference(CCI),in turn,severely affecting the key performance indicators such as system access,handover and drop.In the 5 G era,to ensure communication channels and information security,CCI must be reduced.This paper introduces a scattering parabolic equation algorithm for calculating signal propagation in atmospheric ducts on irregular terrain boundaries.It combines Hitney’s radio physical optical model and Wagner’s nonuniform turbulent scattering model for calculating the tropospheric scattering in an evaporation duct or a surface-based duct.The new model proposes a tropospheric scattering parabolic equation algorithm for various tropospheric duct environments.Finally,as a specific case,the topographical boundaries between several cities in the East China Plain were considered,and the over-the-horizon propagation loss was simulated for various ducting and turbulent environments.The simulation results were used to evaluate whether CCI would occur between cities in a specific environment. 展开更多
关键词 atmospheric duct tropospheric turbulence co-channel interference terrain parabolic equation
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Co-channel interference rejection for MIMO-OFDM systems 认领 引用
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作者 潘云强 孟鑫 +1 位作者 江彬 高西奇 《Journal of Southeast University(English Edition)》 EI CAS 2015年第2期170-174,共5页
A method based on the maximum a posteriori probability （MAP） criterion is proposed to estimate the channel frequency response （CFR） matrix and interference- plus-noise spatial covariance matrix （SCM） for multipl... A method based on the maximum a posteriori probability （MAP） criterion is proposed to estimate the channel frequency response （CFR） matrix and interference- plus-noise spatial covariance matrix （SCM） for multiple input and multiple output orthogonal frequency division multiplexing （MIMO-OFDM） systems. An iterative solution is proposed to solve the MAP-based problem and an interference rejection combining （IRC） receiver is derived to suppress co-channel interference （CCI） based on the estimated CFR and SCM. Furthermore, considering the property of SCM, i. e., Hermitian and semi-definite, two schemes are proposed to improve the accuracy of SCM estimation. The first scheme is proposed to parameterize the SCM via a sum of a series of matrices in the time domain. The second scheme measures the SCM on each subcarrier as a low-rank model while the model order can be chosen through the penalized-likelihood approach. Simulation results are provided to demonstrate the effectiveness of the proposed method. 展开更多
关键词 channel estimation spatial covariance matrix（ SCM ） estimation interference rejection interferencerejection combining （IRC） receiver
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Co-Channel Interference Suppression Techniques for Full Duplex Cellular System 认领 引用 被引量：4
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作者 XIN Yongchao MA Meng +1 位作者 ZHAO Zijun JIAO Bingli 《China Communications》 SCIE CSCD 2015年第S1期18-27,共10页
Co-frequency and co-time full duplex(CCFD) is a promising technique for improving spectral efficiency in next generation wireless communication systems. However, for the applications of CCFD in a cellular network, sev... Co-frequency and co-time full duplex(CCFD) is a promising technique for improving spectral efficiency in next generation wireless communication systems. However, for the applications of CCFD in a cellular network, severe co-channel interference is an essential problem. Specifically, there are two significant interferences, i.e., inter-terminal interference(ITI) and inter-cell interference(ICI), which lead to an obvious performance degradation. In this paper, two techniques are proposed for suppressing the ITI and ICI in a CCFD cellular system, respectively. The first technique is obtained by modeling the three-node CCFD system as the Z-channel. After deriving the sum-capacity of the Z-channel, a sum-capacity-achieving scheme based on successive interference cancellation(SIC) is proposed. The second technique is designed by combining the fractional frequency reuse scheme with CCFD. The performance gains of the proposed two techniques in terms of signalto-interference plus noise ratio(SINR) and sumcapacity are analyzed. Simulation results show that the proposed scheme can achieve significant interference suppression performance and higher system capacity, especially for cell edge users. 展开更多
关键词 co-frequency and co-time full duplex(CCFD) fractional frequency reuse(FFR) successive interference cancellation(SIC) Z-channel
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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 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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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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Ultrahigh Electromagnetic Interference Shielding and Integrated Thermal Sensing-encryption Enabled by a Honeycomb-inspired Multifunctional Foam 认领 引用
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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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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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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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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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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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Multifunctional CNT/cellulose-BN/PVA Composites Integrating Dual-continuous Network Structure with Gradient Conductivity for Electromagnetic Interference Shielding and Joule Heating 认领 引用
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作者 Xiao-Rui Wang Ting-Ting Liu +2 位作者 Cheng-Hua Cui Xin Xu Liang-Qing Zhang 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第3期803-812,I0015,共10页
In this study,an architecture featuring a gradient conductive network structure and three-dimensional dual-continuous network structure is constructed in a carbon nanotubes/cellulose-boron nitride/poly(vinyl alcohol)(... In this study,an architecture featuring a gradient conductive network structure and three-dimensional dual-continuous network structure is constructed in a carbon nanotubes/cellulose-boron nitride/poly(vinyl alcohol)(CNT/cellulose-BN/PVA)composite.Using cellulose aerogel as a template,CNT were incorporated into the cellulose template by vertically impregnating the CNT suspension.Following the impregnation of BN/PVA and high-pressure compression,three-dimensional dual-continuous network structure was successfully constructed in the CNT/cellulose-BN/PVA composite.The comprehensive performance of the composite,including electromagnetic interference(EMI)shielding and Joule heating performance,was investigated.The results indicate that the total EMI shielding effectiveness(SE)for the CNT/cellulose-BN/PVA composite reveals similar values for electromagnetic waves incident from different directions,but totally different shielding mechanisms.For the CNT/cellulose-BN/PVA composite with three impregnation cycles of CNT,the EMI SE values exceeded 39 dB for electromagnetic waves incident from both the high-and low-CNT-content sides.93%of the microwaves were reflected when electromagnetic waves were incident from the high-CNT-content side,while the reflection coefficient decreased to 0.44 for the transverse direction.In addition,the construction of the dual-continuous network structure enabled the composite to exhibit both excellent electrical conductivity and good thermal conductivity simultaneously,endowing the material with good Joule heating performance.CNT/cellulose-BN/PVA composite films have significant potential for application as EMI shielding materials in extremely cold weather. 展开更多
关键词 Cellulose Dual-continuous network structure Gradient conductivity Electromagnetic interference shielding Joule heating
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Grating Interference Ultra-Precision Measurement Technology Applied to High-End Equipment 认领 引用
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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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Quantum pathways interference in nonadiabatic strong-field ionizations driven by elliptically polarized laser pulses 认领 引用
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作者 Yidian Tian Kunlong Liu Yueming Zhou 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第4期79-87,共9页
Ultrafast phenomena initiated by strong-field ionization are commonly interpreted within classical or semiclassical frameworks based on electron trajectories.In this work,we theoretically investigate the energy-resolv... Ultrafast phenomena initiated by strong-field ionization are commonly interpreted within classical or semiclassical frameworks based on electron trajectories.In this work,we theoretically investigate the energy-resolved photoelectron angular distributions in above-threshold ionization(ATI)induced by elliptically polarized ultraviolet(UV)pulses and unravel the underlying dynamics from the perspective of quantum-pathway interference.By numerically solving the threedimensional time-dependent Schrodinger equation,we extract the contributions of the quantum pathways for an electron transitioning from the ground state to the continuum under pulses with different ellipticities.Our results demonstrate that for close-to-circularly polarized UV pulses,two quantum pathways govern the angular distribution for each ATI peak,and their interference produces a cosinusoidal oscillation in the photoelectron angular distributions,which is distinct from the Gaussian characteristic predicted by the traditional tunneling framework.In particular,the corresponding offset angle is shown to depend on the relative phase between these two dominant channels.As the ellipticity decreases,the increasing number of contributing pathways leads to a multiple-peak structure in the photoelectron angular distribution.The present study provides a quantum-mechanical perspective for understanding the angular streaking of nonadiabatic ionization in rotating fields. 展开更多
关键词 nonadiabatic strong-field ionization elliptically polarized field quantum pathways interference angular offset
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Heterolayered Carbonized MXene/Polyimide Aerogel for Low-Reflection Electromagnetic Interference Shielding and Multi-Spectrum Compatible Protection 认领 引用
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作者 Shan Zhang Chen‑Ming Liang +5 位作者 Lu Zhou Juntao Wu Martin CKoo Zongxin Wu Yun‑Tian Chen Guang‑Sheng Wang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第6期702-716,共15页
The advancement of next-generation high-frequency communication systems and stealth detection technologies necessitate the development of efficient,multi-spectrum compatible shielding materials.However,the achievement... The advancement of next-generation high-frequency communication systems and stealth detection technologies necessitate the development of efficient,multi-spectrum compatible shielding materials.However,the achievement of simultaneous high efficiency and low reflectivity across microwave,terahertz,and infrared spectra remains a formidable challenge.Herein,a carbonized MXene/polyimide(C-MXene/PI)aerogel material integrating a spatially coupled hierarchically anisotropic structure with stepwise conductivity gradients was constructed.Electromagnetic waves propagate through the top-down vertical disordered horizontal architecture and progressive conductivity gradient of C-MXene/PI aerogel,undergoing stepwise absorption-dissipation-re-dissipation processes.The C-MXene/PI aerogel exhibits an average electromagnetic interference(EMI)shielding effectiveness of91.0 dB in X-band and a reflection coefficient of 0.40.In the terahertz frequency band,the average EMI shielding performance reaches66.2 dB with a reflection coefficient of 0.33.Furthermore,the heterolayered porous architecture of C-MXene/PI aerogels exhibits low thermal conductivity and reduced infrared emissivity,enabling exceptional infrared stealth capability across the 2-16μm wavelength spectrum.This study provides an feasible strategy for constructing low-reflectivity multi-spectrum compatible shielding materials. 展开更多
关键词 Heterolayered Electromagnetic interference shielding Multi-spectrum Low reflection High efficiency
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High-Resolution Interference Patterns of Dark-Bright Solitons with Positive Mass 认领 引用
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作者 Ling-Zheng Meng Ya-Jie Wu +1 位作者 Yan-Hong Qin Li-Chen Zhao 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第7期1-4,共4页
Matter-wave soliton interferometry has been identified as a promising candidate for precise measurements and has been extensively investigated both theoretically and experimentally.We propose an interferometer based o... Matter-wave soliton interferometry has been identified as a promising candidate for precise measurements and has been extensively investigated both theoretically and experimentally.We propose an interferometer based on the recently reported dark-bright solitons with positive effective mass,which exhibits high-resolution interference patterns.The fringes are much broader than the healing length,facilitating direct probing.Moreover,the self-interference effect is observed,so that experimental manipulations can be applied to a single soliton to achieve interferometry.These results present a novel approach to designing soliton interferometers based on dark-bright solitons,which has the potential to pave the way for future precise measurements of magnetic fields,gravity,and other physical quantities. 展开更多
关键词 gravity direct probingmoreoverthe dark bright solitons positive effective mass precise measurements magnetic fields experimental manipulations interference patterns
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Quantum Interference and Optical Tuning of Self-Trapped Exciton State in Double Halide Perovskite 认领 引用
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作者 Kai-Xuan Xu Xin-Bao Liu +9 位作者 Simin Pang Zhe Zhang Yubin Wang Haonan Chang Jiajun Luo Jiang Tang Qihua Xiong Sheng Meng Shiwu Gao Jun Zhang 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第3期87-101,共15页
Self-trapped excitons(STEs),known for their unique radiative properties,have been harnessed in diverse photonic devices;however,their comprehensive understanding and manipulation remain elusive.In this study,we presen... Self-trapped excitons(STEs),known for their unique radiative properties,have been harnessed in diverse photonic devices;however,their comprehensive understanding and manipulation remain elusive.In this study,we present novel experimental and theoretical evidence revealing the hybrid nature and optical tunability of STE state in Cs2Ag0.4Na0.6InCl6.The detection of the Fano resonance in laser energy-dependent Raman and photoluminescence spectra indicates the emergence of an exciton-phonon hybrid state,arising from robust quantum interference between the discrete phonon and continuum exciton states.Moreover,we demonstrate continuous tuning of this hybrid state with the energy and intensity of the laser field.These findings lay the foundation for a comprehensive understanding of the nature of STE and their potential for state control. 展开更多
关键词 photonic deviceshowevertheir self trapped exciton state optical tuning exciton phonon hybrid state fano resonance photoluminescence spectra quantum interference double halide perovskite
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