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Wide Color Gamut and Multi-Band Color Filtration With MIM Structure Plasmonic Filters

ADVANCED MATERIALS TECHNOLOGIES 2025年第8期10卷

作者： Zhu, Jun Wu, Zhongbo Shandong Vocat & Tech Univ Int Studies Sch Intelligent Sci & Control Engn Rizhao 276826 Shandong Peoples R China Guangxi Normal Univ Sch Elect & Informat Engn Sch Integrated Circuits Guilin 541004 Peoples R China Suzhou Univ Sci & Technol Sch Chem & Life Sci Key Lab Adv Electrode Mat Novel Solar Cells Petr & Suzhou 215009 Jiangsu Peoples R China

Color filters are extensively utilized in various applications, including photovoltaic devices, printing, liquid crystal displays, image sensors, digital photography, projection systems, and other optical instruments. In this paper, an F-P cavity structure based on an metal-insulator-metal (Ag-ZnS-Ag) structure is designed. By selecting specific materials and tuning structural parameters, strong coupling effects are formed through the interaction between the Fabry-P & eacute;rot (FP) resonance in the intermediate dielectric cavity and the LSP resonance on the metal surface. This structure can generate a narrow-band resonance peak within the visible light spectrum. By tuning the thickness of the dielectric cavity, color filtration across the 380-700 nm range can be dynamically obtained, enabling continuous multi-band filtering within visible light. Within the visible light range, this structure, functioning as a filter, can achieve a transmission efficiency of up to 56% and a FWHM of 10-24 nm. Additionally, this structure can be used to design wide-color gamut plasma filters for constructing RGB color spaces. When the ZnS thickness is 55 nm, it corresponds to the blue channel of the color space;at 75 nm, it corresponds to the green channel;and at 95 nm, it corresponds to the red channel. This color space can cover 100% of the sRGB color gamut and 99.946% of the Adobe RGB color gamut. In summary, this structure provides a new approach for designing simple, photolithography-free plasma filters that enable multi-band color filtration and exhibit a wide color gamut.

关键词： Fabry-P & eacute rot (FP) resonance localized surface plasmon (LSP) resonance multi-band color filtration RGB color space

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CFMISA: Cross-Modal Fusion of Modal Invariant and Specific Representations for Multimodal Sentiment Analysis 7th

CFMISA: Cross-Modal Fusion of Modal Invariant and Specific R...

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7th Chinese Conference on Pattern Recognition and Computer Vision

作者： Xia, Haiying Chen, Jingwen Tan, Yumei Tang, Xiaohu Guangxi Normal Univ Sch Elect & Informat Engn Guangxi Key Lab Brain Inspired Comp & Intelligent Guilin 541004 Peoples R China Guangxi Normal Univ Educ Dept Guangxi Zhuang Autonomous Reg Key Lab Integrated Circuits & Microsyst Guilin 541004 Peoples R China Guangxi Normal Univ Sch Comp Sci & Engn Guilin 541004 Peoples R China

ISBN: (纸本)9789819785018;9789819785025

Multimodal sentiment analysis aims to identify and understand sentiment using data from different information sources. However, achieving effective fusion of different modalities is challenging due to heterogeneity, information redundancy, and distributional differences between modalities. Previous approaches deal with modal heterogeneity by projecting multiple modalities into a common latent space, but ignore the valuable unique information within each modality, and thus fail to capture rich semantic information of each modality from different perspectives. To address this problem, we propose a framework called CFMISA that effectively learns the commonalities and idiosyncrasies of different modal data, and improves the robustness of sentiment analysis. Specifically, each modality is first mapped to two spaces: a public subspace and a private subspace. Among them, the public subspace contains modality-invariant representations, while the private subspace contains modality-specific representations. Subsequently, we introduce the cross-modal fusion module MCROSS to facilitate effective interaction and fusion between modality-invariant and modality-specific representations, achieving commonality fusion while preserving the diversity of each individual modality. As a result, CFMISA is able to fully exploit the useful information of each modality to achieve more effective fusion and reduce redundant information. Experimental results on the MOSI and MOSEI datasets demonstrate the effectiveness of our proposed CFMISA, outperforming most of existing methods.

关键词： Multimodal sentiment recognition Multimodal representation learning Diversity Cross-modal fusion

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An integrated magnetoimpedance biosensor microfluidic magnetic platform for the evaluation of the cardiac marker cTnI

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ANALYTICAL METHODS 2025年第5期17卷 990-998页

作者： Yang, Zhen Chen, Jingyuan Liu, Mengyu Huang, Jiabao Liang, Jieping Zhu, Mengjiao Shen, Yuanwei Li, Danqing Lei, Chong Sun, Xuecheng Guangxi Normal Univ Sch Elect & Informat Engn Guangxi Key Lab Brain inspired Comp & Intelligent Gulin 541004 Guangxi Peoples R China Guangxi Normal Univ Educ Dept Guangxi Zhuang Autonomous Reg Key Lab Integrated Circuits & Microsyst Guilin 541004 Guangxi Peoples R China Natl Univ Singapore Inst Hlth Innovat & Technol Singapore 117599 Singapore Guizhou Med Univ Affiliated Hosp Guiyang 550009 Peoples R China Shanghai Jiao Tong Univ Sch Elect Informat & Elect Engn Dept Micronano Elect Natl Key Lab Adv Micro & Nano Manufacture Technol Shanghai 200240 Peoples R China Shanghai Univ Microelect Res & Dev Ctr Sch Mechatron Engn & Automat Shanghai 200444 Peoples R China

An integrated magnetoimpedance (MI) biosensor microfluidic magnetic platform was proposed for the evaluation of the cardiac marker, cardiac troponin I (cTnI). This bioanalyte evaluation platform mainly comprised three external permanent magnets (PMs), one MI element, two peelable SiO2 film units and a microfluidic chip (MFC). The MI element was made of micro-electro-mechanical system (MEMS)-based multilayered [Ti (6 nm)/FeNi (100 nm)]5/Cu (400 nm)/[Ti (6 nm)/FeNi (100 nm)]5 thin films and designed as meander structures with closed magnetic flux. The MFC was fabricated using 3D printing and inverted molding techniques, designed with a solution by mixing the reaction region, magnetic separation region and detection region. Peelable SiO2 film units with the same size as the MI sensing element were used as the immunoreactivity interface of the bioanalytes. Two large PMs were placed directly below the MI sensing unit to provide a bias magnetic field, and the smaller PM was embedded in MCF for magnetic separation function. Different concentrations of the biological target (cTnI antigen)-, PBS buffer-, and Dynabeads-labeled polyclonal cTnI antibody solution were injected sequentially into the MCF. After immunoreactivity and magnetic separation, a classical sandwich immunoreaction process occurred on the surface of the monoclonal antibody-modified SiO2 film via self-assembling process in the reaction region of the MFC. The fundamental principle for evaluation of cTnI was based on variations of the MI signal under different concentrations of the biological target coupled with different numbers of Dynabeads. It was demonstrated that the mentioned MI-based magnetic platform could perform quantitative detection analyses over a range of cTnI concentrations (lowest concentration = 0.1 ng mL-1 and highest concentration = 100 ng mL-1). The proposed MI-based magnetic platform provides a sensitive, reliable, stable and reusable bioanalytical platform, and it has potential in future b

关键词： Permanent magnets

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Analysis of Magnetic Properties of Magnetostrictive FeCoGa Thin Film Patterns Grown on Flexible Substrates

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JOURNAL OF ELECTRONIC MATERIALS 2025年第5期54卷 3708-3718页

作者： Yang, Zhen Meng, Ziqin Huang, Jiabao Cao, Jian Zhang, He Sun, Xuecheng Lei, Chong Guangxi Normal Univ Sch Elect & Informat Engn Guangxi Key Lab Brain Inspired Comp & Intelligent Guilin 541004 Peoples R China Guangxi Normal Univ Educ Dept Guangxi Zhuang Autonomous Reg Key Lab Integrated Circuits & Microsyst Guilin 541004 Peoples R China Natl Univ Singapore Inst Hlth Innovat & Technol Singapore 117599 Singapore Guangxi Radio & Televis Technol Ctr Chongzuo Branch Chongzuo 532200 Peoples R China Shanghai Univ Microelect Res & Dev Ctr Sch Mechatron Engn & Automat Shanghai 200444 Peoples R China Shanghai Jiao Tong Univ Sch Elect Informat & Elect Engn Dept Micronano Elect Natl Key Lab Adv Micro & Nano Manufacture Technol Shanghai 200240 Peoples R China

Magnetostrictive thin films deposited on flexible substrates have garnered significant attention due to their diverse applications in flexible magnetoelectronic devices, including flexible magnetic memory devices, sensors, and high-frequency devices. In this work, magnetostrictive FeCoGa thin films were deposited on polyimide (PI), polyester (PET), and mica flexible substrates. The rectangular and dumbbell-shaped thin film patterns with varying sizes were designed and implemented using microelectromechanical systems (MEMS) technology. The films were characterized using scanning electron microscopy (SEM), x-ray diffraction (XRD), vibrating sample magnetometry (VSM), and impedance analyzer. The results showed that magnetostrictive amorphous FeCoGa films were effectively formed on these flexible substrates. The patterns on the PI substrate exhibited low coercivity and the highest quality factor, while the patterns on the mica substrate demonstrated the lowest residual magnetism. The dumbbell-shaped patterns exhibited higher magnetic response sensitivity than the rectangular film patterns. Notably, the variation in resonance frequency between the array patterns was extremely small, at less than 0.18%, indicating excellent reproducibility and consistency of the magnetic properties of the patterns. The results confirmed the superior performance of dumbbell-shaped FeCoGa magnetostrictive film patterns on flexible substrates, providing valuable insights for the design of flexible magnetostrictive sensors.

关键词： Magnetostrictive thin film patterns response sensitivity flexible substrate magnetic properties

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Multifunctional all-nanofiber cloth integrating personal health monitoring and thermal regulation capabilities

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INFOMAT 2025年第1期7卷

作者： Wang, Peng Sun, Guifen Hua, Shuaichuang Yu, Wei Meng, Chuizhou Han, Qing Kim, Jeonghyun Guo, Shijie Shen, Guozhen Li, Yang Hebei Univ Technol Sch Mech Engn State Key Lab Reliabil & Intelligence Elect Equipm Hebei Key Lab Smart Sensing & Human Robot Interact Tianjin 300401 Peoples R China Univ Jinan Sch Mech Engn Jinan Peoples R China Kwangwoon Univ Dept Elect Convergence Engn Seoul South Korea Beijing Inst Technol Sch Integrated Circuits & Elect Beijing 100081 Peoples R China Univ Jinan Sch Informat Sci & Engn Shandong Prov Key Lab Network Based Intelligent Co Jinan Peoples R China Shandong Univ Sch Microelect Jinan 250101 Peoples R China Fudan Univ State Key Lab Integrated Chips & Syst Shanghai Peoples R China

Frequent heat waves and cold spells pose threats to human survival. Herein, we develop a multifunctional all-nanofiber cloth with physiological signal monitoring and personal thermal management capabilities through facile fiber electrospinning and ink printing techniques. The double-sided fabric mat of a thick carbon nanotube network with high solar absorption on top of a thermoplastic polyurethane nanofiber substrate with high solar reflectivity and mid-infrared emissivity offers a contrary thermal management effect of heating or cooling by opposite wearing mode. The integrated fabric strain and temperature sensors for health status evaluation through monitoring physiological signals of respiration and body temperature. By wearing a T-shirt tailored by the developed electronic cloth, the wearer's skin temperature can be actively regulated with cooling by 5.4 degrees C and warming by 3.0 degrees C in hot and cold environments compared to normal clothing, respectively. This platform can inspire further studies in wearable multifunctional permeable *** We develope a multifunctional all-nanofiber cloth with physiological signal monitoring and personal thermal management capabilities through facile fiber electrospinning and ink printing ***

关键词： electrospun nanofiber passive radiative cooling personal thermal management solar heating strain sensor temperature sensor

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GaN/MoO3 n-n heterojunction based anti-humidity gas sensor for NO2 real-time monitoring

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MICROCHEMICAL JOURNAL 2025年 209卷

作者： Hong, Yutao Han, Dan Duan, Qi Li, Donghui He, Xiuli Li, Bing Liang, Hua Li, Hongwei Sang, Shengbo Taiyuan Univ Technol Coll Integrated Circuits Shanxi Key Lab Micro Nano Sensors & Artificial Int Taiyuan 030024 Peoples R China Taiyuan Univ Technol Key Lab Adv Transducers & Intelligent Control Syst Minist Educ Taiyuan 030024 Peoples R China Chinese Acad Sci State Key Lab Transducer Technol Aerosp Informat Res Inst Beijing 100190 Peoples R China Shanxi Med Univ Sch & Hosp Stomatol Shanxi Prov Key Lab Oral Dis Prevent & New Mat Taiyuan 030001 Peoples R China Shanxi Med Univ Chinese Acad Med Sci Shanxi Prov Canc Hosp Shanxi HospCanc Hosp Taiyuan 030000 Peoples R China

Effective and accurate detection of NO2 gas is crucial for protecting the environment and public health. In this work, balsam pear-like GaN/MoO3 porous nanosheets (GaN/MoO3) composites were synthesized by in situ assembling, the hydrothermal method, and the nitridation process to detect NO2. A series of characterization methods were used to manifest the successful synthesis and to analyze the morphology and elemental composition features of GaN/MoO3 composites. The results of the gas-sensing experiments show that, at the operating temperature of 225 degrees C, the gas sensor based on the optimal ratio of GaN/MoO3 composites exhibits a 25-fold lower limit of detection for NO2 than that of MoO3, with a reduction of baseline resistance drift. Further, the response value of the sensor based on GaN/MoO3 composites to 200 ppm NO2 (44.74) is 4.36 times higher than that of the sensor based on pure GaN, with an improvement in stability. Meanwhile, the sensor possessed excellent repeatability, selectivity, stability, and distinguished anti-humidity ability at 15-70 % RH. The improved gas-sensing performance is attributed to the unique microstructure of both GaN and MoO3 and the heterojunction effect between them. In addition, we constructed a real-time NO2 monitoring device based on the gas-sensing characteristic of GaN/MoO3, which realizes the alarm of excessive concentrations of NO2. Overall, this work provides a way to improve the ability of NO2 monitoring for the sensors of MoO3-based composites.

关键词： GaN/MoO 3 n -n heterojunction NO 2 detection Anti-humidity Real-time monitoring

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Self-powered flexible piezoelectric sensor based on magnetically aligned Ni@CF composites

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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 2025年第10期36卷 1-16页

作者： Li, Yinhui Gao, Fei Li, Weidong Yin, Rongyan Li, Qiguo Liang, Jianguo Zhao, Peng Zhao, Hongyan Li, Pengwei Bian, Guibin Taiyuan Univ Technol Coll Integrated Circuits Micronano Syst Res Taiyuan 030024 Shanxi Peoples R China Taiyuan Univ Technol Coll Informat Engn MicroNano Syst Res Ctr Taiyuan 030024 Shanxi Peoples R China Taiyuan Univ Technol Coll Mech & Vehicle Engn Taiyuan 030024 Shanxi Peoples R China Huazhong Univ Sci & Technol State Key Lab Intelligent Mfg Equipment & Technol Wuhan 430074 Hubei Peoples R China Chinese Acad Sci Inst Automat State Key Lab Multimodal Artificial Intelligence S Beijing Peoples R China

Advancements in electronics designed to sense physiological states have shown great promise for personal care applications. However, despite progress in flexible device development, poor adhesion and insufficient sensitivity are still main limitations. Herein, we present a high-performance and flexible piezoelectric sensor fabricated using a nickel-plated short carbon fiber (Ni@CF)/polyacrylonitrile (PAN) composite film. The Ni@CF was aligned within the PAN matrix through a magnetic field-assisted fabrication method. The effects of Ni@CF proportions and orientation degrees on the electrical properties of the Ni@CF/PAN composite film were systematically studied. The output performance of random Ni@CF/PAN flexible piezoelectric sensor first increases and then decreases as the Ni@CF proportion increases, achieving a peak output voltage of 3.99 V and a peak output current of 2.01 mu A when the doping proportion of Ni@CF was 4.0 wt%. The output performance of Ni@CF/PAN flexible piezoelectric sensor is linearly correlated with Ni@CF orientation degree. The output voltage and current of the flexible piezoelectric sensor based on oriented Ni@CF/PAN film are 4.94 V and 2.31 mu A, representing enhancements 27% and 11%, respectively, compared to random Ni@CF/PAN film sensor. The sensitivity of oriented Ni@CF/PAN film sensor is 0.87 V/N, making a 30% improvement than random Ni@CF/PAN film sensor. The response and recovery times of the oriented Ni@CF/PAN sensor are 29 ms and 23 ms, respectively. Furthermore, the durability of the Ni@CF/PAN flexible piezoelectric sensor was measured through a pressing-releasing test of over 10,000 cycles. The feasibility of self-powering was verified by using the Ni@CF/PAN flexible piezoelectric sensor to charge a capacitor, which was then discharged to light up a commercial red LED. Additionally, the Ni@CF/PAN composite film sensor proves effective in monitoring human activity signals from various body parts, including the neck, throat, knee, an

关键词： Piezoelectricity

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3-D Magnetic Angular Sensor Enabled by Spin-Orbit Torque

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IEEE TRANSACTIONS ON MAGNETICS 2025年第4期61卷

作者： Li, Xin Zhan, Wei Guo, Zhe Fan, Xiaoyu Zhou, Chenxi Wang, Yihan Zhang, Shuai You, Long Huazhong Univ Sci & Technol Sch Integrated Circuits Wuhan 430074 Peoples R China Hubei Univ Sch Microelect Wuhan 430062 Peoples R China Hubei Univ Key Lab Intelligent Sensing Syst & Secur Minist Educ Wuhan 430062 Peoples R China Huazhong Univ Sci & Technol Engn Res Ctr Data Storage Syst & Technol Key Lab Informat Storage Syst Minist Educ China Wuhan 430074 Peoples R China Shenzhen Huazhong Univ Sci Technol Res Inst Shenzhen 518000 Peoples R China

The application scenarios of magnetic angular position sensors are extensive, spanning diverse fields, such as navigation, medical devices, robotics, automotive industries, and aerospace. However, the fabrication of 3-D angular sensors presents significant challenges, as it necessitates the integration of sensors with varying orientations and precise orientation correction. In this work, we propose a novel 3-D angular position sensor based on the current-induced spin-orbit torque (SOT) effect, which features a simple and compact heavy metal (HM)/ferromagnetic (FM) heterostructure configuration. Spatial angular detection is accomplished by determining two projection angles, which represent the projection of a magnetic field onto three orthogonal planes within a spatial coordinate system. Compared to both commercially available and recently proposed angular position sensors, our design distinguishes itself by enabling 3-D magnetic field sensing with a single device, while maintaining a straightforward and scalable manufacturing process. Experimental results demonstrate that the angular error of the proposed sensor remains below 1 degrees under magnetic fields of less than 15 Oe.

关键词： Magnetic fields Robot sensing systems Three-dimensional displays Magnetic field measurement Magnetization Sensors Saturation magnetization Magnetic devices Magnetic domains IP networks Magnetic angular position sensor scalability spin-orbit torque (SOT) vectoral magnetic field sensing

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Metasurface-enabled optical encryption and steganography with enhanced information security

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NANOPHOTONICS 2025年第9期14卷 1391-1403页

作者： Xing, Wen Bu, Changke Zhang, Xiaoyi Choi, Duk-Yong Li, Yang Yue, Wenjing Cheng, Jiaqi Li, Zhancheng Chen, Shuqi Gao, Song Univ Jinan Sch Informat Sci & Engn Shandong Key Lab Ubiquitous Intelligent Comp Jinan 250022 Peoples R China Australian Natl Univ Laser Phys Ctr Res Sch Phys Canberra ACT 2601 Australia Shandong Univ Sch Integrated Circuits Jinan 250101 Peoples R China Nankai Univ Sch Phys Tianjin 300071 Peoples R China Nankai Univ TEDA Inst Appl Phys Tianjin 300071 Peoples R China

Metasurfaces have attracted considerable interest in optical encryption due to their remarkable ability to manipulate light at subwavelength scales, however the aspect of encryption security remains an area requiring deeper exploration. Here, we propose and demonstrate metasurface-enabled optical encryption and steganography that provides dual-layer information protection. A secret information is embedded within multiple carrier images using a run-length encoding algorithm, dispersing the data to safeguard it against direct observation and brute-force attacks, thereby establishing the first layer of security. The second layer is achieved by encoding the multiple carrier images onto a silicon metasurface, leveraging light wavelength and polarization to generate diverse optical keys post-steganography. To validate the proposed scheme, several silicon metasurface samples are fabricated and characterized in the visible spectrum. By adjusting various combinations of optical keys, three encrypted carrier images are retrieved with high fidelity and negligible crosstalk, and the concealed secret information is successfully extracted through a corresponding decryption algorithm. The proposed approach enhances optical information security at the hardware level, making it less susceptible to leakage. It is anticipated that the demonstrated advancement will hold significant potential for applications in information security and optical anti-counterfeiting.

关键词： metasurface optical encryption steganography wavelength multiplexing polarization multiplexing

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YOLOv8-G2F: A portable gesture recognition optimization algorithm

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NEURAL NETWORKS 2025年 188卷 107469页

作者： Feng, Zhao Huang, Junjian Zhang, Wei Wen, Shiping Liu, Yangpeng Huang, Tingwen Southwest Univ Coll Elect & Informat Engn Chongqing Key Lab Nonlinear Circuits & Intelligent Chongqing 400715 Peoples R China Univ Technol Sydney Australian AI Inst Fac Engn & Informat Technol Sydney NSW 2007 Australia Shenzhen Univ Adv Technol Fac Comp Sci & Control Engn Shenzhen 518055 Peoples R China

Hand gesture recognition (HGR) is a significant research area with applications in human-computer interaction, artificial intelligence, and more. In the early stage of development of HGR, there are high hardware costs and large usage requirements. To reduce the high cost expenditure and increase the application scenario, deep learning has played a crucial role. With the greater depth perception and more computing power, currently HGR is more about continuous recognition in space based on vedio. But in this article, it considers that there is a growing demand for lightweight networks with high precision for end-to-end HGR applications. In that, it still tends to recognize consecutive video frames and get results quickly. This paper introduces an enhanced network called YOLOv8-G2F, which is based on YOLOv8. It incorporates improved lightweight modules not only replace the traditional convolution module of the network's backbone and neck but also for the C2f module in YOLOv8. The network employs linear transformations, group convolution, and depthwise separable convolution to extract image information using simpler networks. Furthermore, model pruning is also used to further reduce model size and improve accuracy. The improved model achieved a recognition accuracy of 99.2% on the nus-ii gesture dataset with a model size of 2.33 MB. After extensive comparison and ablation experiments, YOLOv8-G2F demonstrated significant progress over existing algorithms.

关键词： HGR YOLOv8 network Lightweight network design Group convolution Depthwise separable convolution Model pruning Deep learning

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