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Thickness-Induced Gradient Micro-Wrinkle Pdms/Mxene/Rgo Wearable Strain Sensor with High Sensitivity and Stretchability for Human Motion detection

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SSRN 2024年

作者： Guo, Haoxia Chu, Zhenming Fu, Luming Lv, Yongming Liu, Xiaoman Fan, Xiaoxing Zhang, Wei School of Physics Liaoning University Shenyang110036 China Liaoning Key Laboratory of Optoelectronic Functional Devices and Detection Technology Shenyang110036 China Liaoning Key Laboratory of Semiconductor Light Emitting and Photocatalytic Materials Liaoning University Shenyang110036 China School of Public Health China Medical University Shenyang110122 China

Flexible strain sensors have attracted significant research interest in the fields of health detection, human-machine interaction, and electronic skin by virtue of excellent stretchability, flexibility, skin conformability, and outstanding sensing ability. Despite recent advances in this field, it remains challenging to achieve high-performance strain sensors with high sensitivity, wide strain range, and strong stability. To address this, we innovatively fabricated a high-performance polydimethylsiloxane (PDMS)/MXene/reduced graphene oxide (rGO) strain sensor with excellent strain sensing and superhydrophobicity using a tilt-filtration method and pre-stretching technique, featuring the novel gradient micro-wrinkle structure induced by thickness variation. Owing to the synergistic effect between the material and the microstructure, the sensor exhibits high sensitivity (gauge factor (GF) maximum up to 136,124.40), a wide strain range (up to 300%), and good stability (up to 10,500 cycles). This strain sensor can detect a wide range of human body movements, including large-scale movements and subtle stimuli. Additionally, the strain sensor is accompanied by a rough surface structure and low surface energy, endowing it with superhydrophobicity and corrosion resistance, which can be applied in harsh environments. The gradient micro-wrinkle strain sensors have the potential for practical applications in health detection, electronic skin, and human-machine interaction. © 2024, The Authors. All rights reserved.

关键词： Graphene

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High Refractive Index Localized Surface Plasmon Resonance Sensor Based on Hollow Core Fiber Filled with Gold Nanowires

High Refractive Index Localized Surface Plasmon Resonance Se...

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International Conference on Optical Communications and Networks (ICOCN)

作者： Ailing Zhan Zhiyang Wang Pengxia Sui Pengxiang Chang Engineering Research Center of Optoelectronic Devices and Communication Technology Ministry of Education College of Integrated Circuit Science and Engineering Tianjin University of Technology Tianjin Key Laboratory of Thin Film Electronics and Communication Devices Tianjin China

A localized surface plasmon resonance sensor based on hollow-core fibers for high RI detection is proposed, which has good sensing performance and obtains a high sensitivity of 47623.83 nm/RIU in the RI range of 1.430... 详细信息

ISBN: (数字)9798350367652

ISBN: (纸本)9798350367669

关键词： Q-factor Optical fiber sensors Gold Sensitivity Refractive index Optical fiber networks Resonance

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Scalable matrix ring data center interconnect based on FSO technology

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Optics Express 2025年第12期33卷 25016-25038页

作者： Qian Kong Jianning Su Xiaowei Lu Liming Liu Haijun Yuan School of Electronic and Information Engineering University of Electronic Science and Technology of China Zhongshan Institute Zhongshan 528402 China College of Physics and Optoelectronic Engineering Shenzhen University SZU China Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Shenzhen Key Lab of Micro-Nano Photonic Information Technology State Key Laboratory of Radio Frequency Heterogeneous Integration China

To address escalating data center traffic and scalability issues, this paper introduces a novel hybrid data center network (DCN) architecture using free-space optics (FSO). The proposed three-layer matrix ring topology employs wired intra-layer links and wireless FSO inter-layer connections, reducing cabling and end-to-end delay. An optimized FSO link allocation strategy based on priority principles further enhances performance. Simulations demonstrate significant delay reduction as FSO links increase (up to 35.7%). Comparative analysis against leaf-spine validates the matrix ring’s superiority, showing lower average delays under high loads and markedly better, more predictable delay distributions under bursts of traffic. This work offers a promising approach for flexible, efficient, and scalable future DCNs.

关键词： Heterodyne detection Machine learning Millimeter waves Multicore fibers Ring networks Visible light communications

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Multiple magnetic transitions and complex magnetic structures in Fe2SiSe4 with the sawtooth lattice

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Physical Review B 2023年第22期107卷 224423-224423页

作者： Feihao Pan Xunwu Hu Jiale Huang Bingxian Shi Jinchen Wang Juanjuan Liu Hongxia Zhang Daye Xu Jianfei Qin Hongliang Wang Lijie Hao Kun Cao Peng Cheng Dao-Xin Yao Laboratory for Neutron Scattering and Beijing Key Laboratory of Optoelectronic Functional Materials and MicroNano Devices Department of Physics Renmin University of China Beijing 100872 China State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Center for Neutron Science and Technology School of Physics Sun Yat-sen University Guangzhou 510275 China China Institute of Atomic Energy PO Box-275-30 Beijing 102413 China

The sawtooth lattice shares some structural similarities with the kagome lattice and may attract renewed research interest. Here we report a comprehensive study on the physical properties of Fe2SiSe4, an unexplored member in the olivine chalcogenides with the sawtooth lattice of Fe. Our results show that Fe2SiSe4 is a magnetic semiconductor with band gap of 0.66 eV. It first undergoes an antiferromagnetic transition at Tm1=110 K, then an ferrimagneticlike one at Tm2=50 K, and finally a magnetic transition at Tm3=25 K, which is likely driven by the thermal populations of spin-orbit manifold on the Fe sites. Neutron diffraction analysis reveals a noncollinear antiferromagnetic structure with propagation vector q1=(0,0,0) at Tm2devices and the flat-band effect through chemical doping.

关键词： Magnetic coupling Magnetic interactions Magnetic order Magnetic phase transitions Magnetic susceptibility Magnetism Antiferromagnets Magnetic semiconductors Band structure methods Density functional theory Magnetization measurements Neutron diffraction Specific heat measurements X-ray diffraction

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Highly Efficient Blue Organic Light-Emitting Diode Based on a Pyrene[4,5-d]Imidazole-Pyrene Molecule

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CCS Chemistry 2022年第1期4卷 214-227页

作者： Yulong Liu Xiaxia Man Qing Bai Hui Liu Pengyuan Liu Ying Fu Dehua Hu Ping Lu Yuguang Ma State Key Laboratory of Supramolecular Structure and Materials Department of ChemistryJilin UniversityChangchun 130012 Department of Chemistry College of Arts and SciencesNortheast Agricultural UniversityHarbin 150030 The First Hospital of Jilin University Changchun 130021 Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640

Organic light-emitting diodes(OLEDs),which have been recently utilized in some flat-panel display screens such as mobile phones and televisions,show many merits,including light weight,high flexibility,energy preservation,and so forth,and are considered the next-generation displays and solid-state ***-emitting materials that can be applied in nondoped OLEDs with little efficiency roll-offs at high brightness are of great ***,a highly efficient,blue-emitting material,9-phenyl10-(4-(pyren-1-yl)phenyl)-9H-pyreno[4,5-d]imidazole(PyPI-Py),is achieved using pyrene[4,5-d]imidazole and pyrene as the weak electron donor and electron acceptor,*** nondoped blue OLED exhibits excellent performance with a maximum brightness of 75,687 cd m^(−2),a maximum current efficiency of 13.38 cd A−1,and a maximum external quantum efficiency(ηext)of 8.52%.Moreover,theηext is maintained at 8.35%and 8.05%at a brightness of 10,000 and 50,000 cd m^(−2),respectively,displaying extremely small efficiency roll-offs of 2.0%and 5.5%.The device characteristics are among the highest values for nondoped blue OLEDs and correspond to the best performance obtained for nondoped pyrene-based blue *** superior performance is attributed to the proper donor–acceptor design strategy which results in a quasi-equivalent hybrid local and charge-transfer excited state with the maximum generation of an 82%fraction of singlet excitons.

关键词： pyrene imidazole nondoped OLEDs blue emission efficiency roll-off

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Configuration Design and Interface Reconstruction to Realize the Superior High-Rate Performance for Sodium Layered Oxide Cathodes

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Advanced Energy Materials 2025年

作者： Zhang, Jiandong Yu, Zhaoshi Zhu, Yanbin Cai, Jingyao Wang, Muqin Gao, Pengkun Zhang, Yali Zhang, Naiqing Wang, Deyu Shen, Yan Wang, Mingkui Wuhan National Laboratory for Optoelectronics School of Optoelectronic Science and Engineering Huazhong University of Science and Technology Wuhan430074 China State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150001 China Energy Technology Co. Ltd. Building 1 High-Tech Industrial Park Weishan County Shandong Jining272000 China Key Laboratory of Optoelectronic Chemical Materials and Devices Ministry of Education School of Optoelectronic Materials & Technology Jianghan University Wuhan China

Charge transfer at the electrode/electrolyte interface and mass transfer within the electrode are the two main factors affecting the high-rate performance of O3-type layered oxide cathodes for sodium-ion batteries. Here a multidimensional lanthurization strategy is proposed to construct the surface LaCrO3 heterostructure and create a Cr─O─La configuration for O3-type NaCrO2. The electrified heterogeneous LaCrO3 induces a built-in electric field to accelerate charge transfer at the interface. Meanwhile, the Cr─O─La configuration in the transition metal layer leads to local charge aggregation, weakens the interaction force between Na─O, and reduces the Na+ migration barrier. This strategy significantly improves the electrochemical reaction kinetics and the structural reversibility of the layered oxide cathode. As a result, the designed stoichiometric ratio Na0.94Cr0.98La0.02O2 electrode exhibits remarkable rate performance (101.8 mAh g−1 at 40 C) as well as outstanding cycling stability (83.1% capacity retention at 20 C for 2000 cycles) in a half-cell, along with a competitive full battery performance (89.3% after 500 cycles at 2 C). This study provides a promising route to achieve capacity presentation and retention of layered oxide cathode materials at high-rate. © 2025 Wiley-VCH GmbH.

关键词： Sodium-ion batteries

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Flexible and highly-sensitive pressure sensor based on controllably oxidized MXene

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InfoMat 2022年第9期4卷 60-71页

作者： Yanan Ma Yongfa Cheng Jian Wang Si Fu Mengjun Zhou Yue Yang Baowen Li Xin Zhang Ce-Wen Nan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices&International School of Materials Science and EngineeringWuhan University of TechnologyWuhanChina School of Mathematics Physics and Optoelectronic EngineeringHubei University of Automotive TechnologyShiyanChina Center for Nanoscale Characterization&Devices(CNCD) Wuhan National Laboratory for Optoelectronics(WNLO)Huazhong University of Science and Technology(HUST)WuhanChina Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefeiChina State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijingChina

Conductive Ti_(3)C_(2)T_(x)MXenes have been widely investigated for the construction of flexible and highly-sensitive pressure *** the inevitable oxidation of solution-processed MXene has been recognized,the effect of the irreversible oxidation of MXene on its electrical conductivity and sensing properties is yet to be ***,we construct a highly-sensitive and degradable piezoresistive pressure sensor by coating Ti_(3)C_(2)T_(x)MXene flakes with different degrees of in situ oxidation onto paper substrates using the dipping-drying *** situ oxidation can tune the intrinsic resistance and expand the interlayer distance of MXene *** partially oxidized MXene-based piezoresistive pressure sensor exhibits a high sensitivity of 28.43 kPa^(-1),which is greater than those of pristine MXene,over-oxidized MXene,and state-of-the-art paper-based pressure ***,these sensors exhibit a short response time of 98.3 ms,good durability over 5000 measurement cycles,and a low force detection limit of 0.8 ***,MXene-based sensing elements are easily degraded and environmentally *** MXene-based pressure sensor shows promise for practical applications in tracking body movements,sports coaching,remote health monitoring,and human–computer interactions.

关键词： adjustable sensitivity in situ oxidation interlayer distance MXene pressure sensor

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Anchoring polysulfide with artificial solid electrolyte interphase for dendrite-free and low N/P ratio Li-S batteries

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Journal of Energy Chemistry 2023年第5期80卷 32-39,I0002页

作者： Wei Lu Zhao Wang Guiru Sun Shumin Zhang Lina Cong Lin Lin Siru Chen Jia Liu Haiming Xie Yulong Liu Key Laboratory of Functional Materials Physics and Chemistry Ministry of Education Jilin Normal UniversityChangchun 130103jilinChina College of Information Technology Jilin Engineering Research Center of Optoelectronic Materials and DevicesJilin Normal UniversitySiping 136000JilinChina Department of Mechanical and Materials Engineering Western UniversityChangchun 130024JilinChina School of Chemistry Northeast Normal UniversityLondon N6A 3K7Canada

Lithium sulfur batteries are regarded as a promising candidate for high-energy-density energy storage ***,the lithium metal anode in lithium-sulfur batteries encounters the problem of lithium dendrites and lithium metal consumption caused by polysulfide *** we design a dualfunction PMMA/PPC/LiNO3composite as an artificial solid electrolyte interphase(PMCN-SEI)to protect Li metal *** SEI offers multiple sites of C=O for polysulfide anchoring to constrain corrosion of Li metal *** lithiated polymer group and Li3N in PMCN-SEI can homogenize lithium-ion deposition behavior to achieve a dendrite-free *** a result,the PMCN-SEI protected Li metal anode enables the Li||Li symmetric batteries to maintain over 300 cycles(1300 h)at a capacity of 5 m Ah cm^(-2),corresponding to a cumulative capacity of 3.25 Ah cm^(-2).Moreover,Li-S batteries assembled with 20μm of Li metal anode(N/P=1.67)still deliver an initial capacity of 1166 m A h g-1at ***,introducing polycarbonate polymer/inorganic composite SEI on Li provides a new solution for achieving the high energy density of Li-S batteries.

关键词： Thin Limetal anode Solid electrolyte interphase(SEI) Lithium-sulfur(Li-S)batteries Polymer/inorganic composite Polycarbonate

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Sierpinski Metamaterial for Near-perfect Terahertz Tunable Broadband Absorber Using Vanadium Dioxide

Sierpinski Metamaterial for Near-perfect Terahertz Tunable B...

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2024 Photonics and Electromagnetics Research Symposium, PIERS 2024

作者： Asrafali, B. Khan, Fahim Pavithra, M. Rani, Renuka Zheng, Yaoxian Yogesh, N. An, Yinbing Ouyang, Zhengbiao Shenzhen University THz Technical Research Center of Shenzhen University Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen518060 China Department of Nuclear Physics Tamil Nadu Chennai600 025 India Vellore Institute of Technology School of Electronics Engineering Tamil Nadu Chennai600 127 India Xidian University Hangzhou Institute of Technology Hangzhou311231 China National Institute of Technology Calicut Department of Physics Kerala Kozhikode673601 India

ISBN: (纸本)9798350375909

Metamaterials (MTM's) are well known for their fascinating control over electromagnetic waves. The inclusion of vanadium dioxide (VO2) a tunable phase-changing material, in the MTM's design opens up an additional degree of freedom at terahertz (THz) waveband. In this work, Sierpinski Triangle fractal structure is patterned on the silicon substrate. The frequency dependence of the relative permittivity of VO2 is modeled using the Drude *** to the inclusion of mutli-sized triangles, the proposed pattern exhibits broadband frequency response in the absorption spectrum for TE polarization. The proposed absorber shows near 100% absorbance from 4.2 THz to 5.8 THz and the absorptance bandwidth is 99.37% for VO2 conductivity of 2000 S/m, whereas for 500 S/m, the MTM absorber shows 80%-90% of absorptance from ∼ 4 THz to 6 THz due to the mixed (metallic and insulator) phase of VO2. It is highlighted that the impedance matching condition is implemented to check the reliability of the obtained absorption. We anticipate that the incorporation of the fractal structure in VO2-based metamaterial fulfils the realization of broadband THz devices for communication, imaging and sensing applications. © 2024 IEEE.

关键词： Terahertz waves

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PGC Demodulation Scheme with Improved Robustness to Modulation Depth for Vibration Measurement

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IEEE Photonics technology Letters 2025年

作者： Zhu, Yunlong Jian, Yuanhao Li, Yufeng Yuan, Yonggui Dang, Fanyang Zhu, Yao Zhu, Zheng Zhang, Xiaojun Yang, Jun Harbin Engineering University Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications Ministry of Industry and Information Technology of China College of Physics and Optoelectronic Engineering Harbin150001 China Harbin Engineering University Key Laboratory of In-Fiber Integrated Optics of Ministry of Education College of Physics and Optoelectronic Engineering Harbin150001 China Guangdong University of Technology Guangdong Provincial Key Laboratory of Information Photonics Technology The School of Information Engineering The Advanced Institute of Photonic Technology Guangzhou510006 China

In this letter, the fGLIA (filtered generalized lock-in amplifier) algorithm is introduced to fiber-optic vibration measurement. The filtering procedure of the original fGLIA algorithm is changed, making it more suitable for dynamic signal measurement. Theoretically the proposed demodulation scheme is not influenced by the zeros of the Bessel functions, and can keep a good performance in a wide range of modulation depth. It is compared with PGC-Arctan demodulation scheme by simulations and experiments, showing better robustness to modulation depth error and larger range of applicable modulation depth. The experimental total harmonic distortion of demodulation results remains at about -53dB for the proposed method, while distortions may occur at certain modulation depths for PGC-Arctan. © 1989-2012 IEEE.

关键词： Vibration measurement

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