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A Multi-Modality Attention Network for Driver Fatigue Detection Based on Frontal EEG, EDA and PPG Signals

IEEE Journal of Biomedical and Health Informatics 2025年第6期29卷 4009-4022页

作者： Guo, Yuanru Yang, Kunping Wu, Yi Fujian Normal University Key Laboratory of Optoelectronic Science and Technology for Medicine Ministry of Education Fujian Provincial Key Laboratory of Photonics Technology Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application College of Photonic and Electronic Engineering Fuzhou China

Fatigue driving is a common issue that often leads to traffic accidents, which has motivated numerous automatic driving fatigue detection methods based on various sources, especially reliable physiological signals. However, it still faces the challenges of accuracy, robustness and practicality, especially for the cross-subject detection. The fusion of multi-modality data can improve the effective estimation of driving fatigue. In this work, we take the advantages of user-friendly and multi-modality signals to build a Multi-Modality Attention Network (MMA-Net) for driver fatigue detection with frontal electroencephalography (EEG), electrodermal activity (EDA) and photoplethysmography (PPG) signals for a hybrid. Specifically, a signal adaptive coding module (SAC-M) has been constructed to fully excavate spatial-temporal information of signals, combining with an attention-based feature dissimilation module (AFD-M) to further obtain key comprehensive features. In addition, the performances of baseline models and state-of-the-art methods on signal sources with different window lengths are also compared. The cross-subject experiment is performed on two groups of 14 participants in the driving simulation experiment. The experimental results prove the superiority of our proposed method. It is possible to use the MMA-Net for driver fatigue detection with user-friendly multi-modality signals such as our selected frontal EEG, EDA and PPG in real-world applications. © 2013 IEEE.

关键词： Electroencephalography

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Constructing multifunctional deep-blue emitters with weak charge transfer excited state for high-performance non-doped blue OLEDs and single-emissive-layer hybrid white OLEDs

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Chinese Chemical Letters 2024年第10期35卷 175-179页

作者： Hui Liu Xiangyang Tang Zhuang Cheng Yin Hu Yan Yan Yangze Xu Zihan Su Futong Liu Ping Lu State Key Laboratory of Supramolecular Structure and Materials Department of Chemistry Jilin UniversityChangchun 130012China Sichuan Province Key Laboratory of Information Materials and Devices Application College of Optoelectronic EngineeringChengdu University of Information TechnologyChengdu 610225China

Deep-blue emitter with high photoluminescence efficiency(PLQY)is highly desirable in ultra-high definition displays and white solid-state *** this work,two deep-blue phenanthro[9,10]imidazole derivatives,PPIS and PPPIS,with hot exciton property are successfully *** to PPIS,the embedded phenyl bridge in PPPIS is able to effectively increase the overlap of frontier molecular *** consequence,PPPIS shows higher oscillator strength and significantly enhanced *** also achieves better electroluminescence performance in non-doped device,showing deep-blue emission with Commission International de l’Eclairage(CIE)coordinates of(0.153,0.087)and the maximum external quantum efficiency(EQEmax)of 8.5%with minuscule efficiency ***,when PPPIS serves as the host for phosphor PO-01,high-efficiency orange phosphorescent device is obtained with high EQEmax of 29.8%and negligible efficiency roll-off at 1000 cd/m^(2).Further,efficient single-emissive-layer white device is assembled via utilizing PPPIS as a blue emitter as well as the host for PO-01 simultaneously,providing warm-white emission with CIE coordinates of(0.429,0.433)at 1000 cd/m^(2),the forward-viewing EQEmaxof 27.2%and maximum power efficiency(PEmax)of 80.1 lm/W,*** studies can establish a viable design strategy for deep-blue emitters in high-performance non-doped blue OLEDs and hybrid WOLEDs.

关键词： Deep-blue emitters Phenanthro[9,10]imidazole Hot exciton Host Single-emissive-layer white device

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Effect of mono-/divalent metal ions on the conductivity characteristics of DNA solutions transferring through a microfluidic channel

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Chinese Physics B 2023年第11期32卷 161-167页

作者：朱洁薛菁赵伟张琛冯晓强王凯歌 State Key Laboratory of Cultivation Base for Photoelectric Technology and Functional Materials Key Laboratory of Optoelectronic Technology of Shaanxi ProvinceNational Center for International Research of Photoelectric Technology&Nano-functional Materials and ApplicationInstitute of Photonics and Photon-TechnologyNorthwest UniversityXi’an 710069China

Interactions between deoxyribonucleic acid(DNA) and metal ions are vital for maintaining life functions, however,there are still unsolved questions about its mechanisms. It is of great practical significance to study these issues for medical chip design, drug development, health care, etc. In this investigation, the conductivity properties of λ-DNA solutions with mono-/divalent metal ions(Na+, K^(+), Mg^(2+), and Ca^(2+)) are experimentally studied as they are electrically driven through a 5 μm microfluidic channel. Experimental data indicate that the conductivities of λ-DNA solutions with metal ions(M+/M2+) basically tend to reduce firstly and then increase as the voltage increases, of which the turning points varied with the metal ions. When the voltage surpasses turning points, the conductivity of λ-DNA-M+solutions increases with the concentration of metal ions, while that of λ-DNA-M^(2+)solutions decrease. Moreover, the conductivity of λ-DNA-M^(2+)solutions is always smaller than that of λ-DNA-M+solutions, and with high-concentration M^(2+), it is even smaller than that of the λ-DNA solution. The main reasons for the above findings could be attributed to the polarization of electrodes and different mechanisms of interactions between metal ions and λ-DNA molecules. This investigation is helpful for the precise manipulation of single DNA molecules in micro-/nanofluidic space and the design of new biomedical micro-/nanofluidic sensors.

关键词： microfluidics interaction between deoxyribonucleic acid(DNA)and metal ions conductivity-voltage relations asymmetric electrodes

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Manipulating Zr/Ti ratio based on phase diagram for large electrocaloric effects with multiple target operation temperatures in PLZT ceramics

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Journal of Advanced Ceramics 2024年第9期13卷 1422-1431页

作者： Junjie Li Ruowei Yin Zhe Xiong Yizheng Bao Xing Zhang Wenjuan Wu Lezhong Li Yang Bai Sichuan Province Key Laboratory of Information Materials and Devices Application College of Optoelectronic Engineeringand Chengdu IC Valley Industrial CollegeChengdu University of Information TechnologyChengdu 610225China Beijing Advanced Innovation Center for Materials Genome Engineering and Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Chengdu Hongming Electronics Co. Ltd.Chengdu 610199China Key Laboratory of Inorganic Functional Materials and Devices Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201800China Sichuan Meteorological Optoelectronic Sensor Technology and Application Engineering Research Center Chengdu University of Information TechnologyChengdu 610225China

Ferroelectric phase transition has been identified as a promising avenue for designing high-performanceelectrocaloric materials for zero-emission and solid-state refrigeration. However, extensive research has been limited todeveloping ferroelectric materials with large electrocaloric effects near room temperature, preventing them from meetingdiverse refrigeration requirements. In this study, by leveraging the room-temperature phase diagram of the (PbLa)(ZrTi)O_(3)solution, we prepared a series of Pb_(0.775)La_(0.15)Zr_(x)Ti_(1−x)O_(3) bulk ceramics spanning the ferroelectric and relaxor ferroelectricphase regions. This enabled the attainment of various phase transition features and temperatures. Finally, largeelectrocaloric effects, coupled with adjustable operation temperatures ranging from 150 to −45℃, are successfullyachieved through manipulation of the Zr/Ti ratio. This comprehensive range of operation temperatures effectively addressesdiverse refrigeration application requirements, ranging from industrial equipment to freezer cabinets. This work not onlyunderscores the expansion of the electrocaloric refrigeration application domain but also proposes a material designstrategy tailored to meet these evolving demands.

关键词： electrocaloric effect phase transition phase diagram ferroelectric ceramics

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Variational quantum metrology with the Loschmidt echo

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National Science Review 2025年第5期12卷 91-98页

作者： Ran Liu Ze Wu Xiaodong Yang Yuchen Li Hui Zhou Zhaokai Li Yuquan Chen Haidong Yuan Xinhua Peng CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences University of Science and Technology of China Anhui Province Key Laboratory of Scientific Instrument Development and Application University of Science and Technology of China Institute of Quantum Precision Measurement State Key Laboratory of Radio Frequency Heterogeneous Integration College of Physics and Optoelectronic Engineering Shenzhen University Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong) School of Physics Hefei University of Technology Hefei National Laboratory University of Science and Technology of China Department of Mechanical and Automation Engineering The Chinese University of Hong Kong

By leveraging quantum effects, such as superposition and entanglement, quantum metrology promises higher precision than classical strategies. It is, however, a challenging task to achieve the higher precision on practical systems. This is mainly due to difficulties in engineering nonclassical states and performing nontrivial measurements on the system, especially when the number of particles is large. Here we propose a variational scheme with the Loschmidt echo for quantum metrology. By utilizing hardware-efficient ansatzes in the design of variational quantum circuits, the quantum Fisher information(QFI) of the probe state can be extracted from the experimentally measured Loschmidt echo in a scalable manner. This QFI is then used to guide the online optimization of the preparation of the probe state. We experimentally implement the scheme on an ensemble of 10-spin quantum processors and achieve a 12.4-dB enhancement of the measurement precision over the uncorrelated states, which is close to the theoretical limit. The scheme can also be employed on various other noisy intermediate-scale quantum devices, which provides a promising protocol to demonstrate quantum advantages.

关键词： quantum metrology Loschmidt echo variational quantum optimization quantum Fisher information

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Low-Density Parity-Check Codes:Highway to Channel Capacity

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China Communications 2023年第2期20卷 235-256页

作者： Liyuan Song Shuyan Yu Qin Huang Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of EducationFujian Normal UniversityFuzhou 350007China School of Electronic and Information Engineering Beihang UniversityBeijing 100191China

Low-density parity-check(LDPC)codes are not only capacity-approaching,but also greatly suitable for high-throughput ***,they are the most popular codes for high-speed data transmission in the past two *** to the low-density property of their parity-check matrices,the optimal maximum a posteriori probability decoding of LDPC codes can be approximated by message-passing decoding with linear complexity and highly parallel ***,it reveals that the approximation has to carry on Tanner graphs without short cycles and small trapping ***,it demonstrates that well-designed LDPC codes with the aid of computer simulation and asymptotic analysis tools are able to approach the channel ***,quasi-cyclic(QC)structure is introduced to significantly facilitate their high-throughput *** fact,compared to the other capacity-approaching codes,QC-LDPC codes can provide better area-efficiency and *** a result,they are widely applied in numerous communication systems,e.g.,Landsat satellites,Chang’e Chinese Lunar mission,5G mobile communications and so ***’s more,its extension to non-binary Galois fields has been adopted as the channel coding scheme for BeiDou navigation satellite system.

关键词： LDPC codes sparsity high-speed message-passing cycles trapping sets quasi-cyclic

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Surfactant Mediated Microphase Separation in Miscible Block Copolymer of Poly(4-vinyl pyridine-b-hydroxybutylacrylate)

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Chinese Journal of Polymer Science 2023年第6期41卷 897-904,I0007页

作者： Xiang-Yun Xu Yu-Tong Gao Ying-Ying Wang You-Shuang Zhou Bi-Jin Xiong Jin-Tao Zhu Key Laboratory of Materials Chemistry for Energy Conversion and Storage(HUST)of Ministry of Education School of Chemistry and Chemical Engineering.Huazhong University of Science and Technology(HUST)Wuhan 430074China Key Laboratory of Optoelectronic Chemical Materials and Devices(Ministry of Education) Jianghan UniversityWuhan 430056China Key Laboratory of Green Preparation and Application of Functional Materials(Ministry of Education) Hubei Key Laboratory of Polymer MaterialsFaculty of Materials Science and EngineeringHubei UniversityWuhan 430062China

Miscible disordered block copolymers(BCPs)are rarely studied due to the limits in self-assembly into ordered ***,we proposed a facile method for the transformation of disordered miscible BCPs to comb-like BCPs with well-ordered microphase separation structures via blending with amphiphilic *** this work,poly(4-vinyl pyridine-b-hydroxybutylacrylate)(P4VP-b-P4HBA)was applied as a model of miscible disordered BCPs and the microphase separation was induced via blending with surfactants of dodecylbenzene sulfonic acid(DBSA)and 3-pentadecylphenol(PDP).The ordered microstructures including spherical and cylindrical morphologies were confirmed by transmission electron microscopy(TEM)and small angle X-ray scattering(SAXS)*** ordered microstructures thermal sensitive,in which ordered and disordered transformation(ODT)was observed in the blend of P4VP-b-P4HBA and PDP whereas it disappeared in the blend of P4VP-b-P4HBA and *** results show that the thermal stability of the ordered microstructures are strongly depends on the interactions between the miscible BCPs and surfactants,which investigated by in situ SAXS and Fourier transform infrared spectrometer(FTIR).The combination of miscible BCPs and surfactant creates a feasible strategy to fabricate ordered nanostructures,which could be employed to develop complicated nanomaterials.

关键词： ordered disordered vinyl

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Enhanced potassium storage of carbon nanofibers as binderfree anodes enabled by coupling ultra-small amorphous Sb_(2)O_(3),graphene modification and sulfur doping

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Rare Metals 2024年第1期43卷 51-64页

作者： Zhao Huang Yu-Kang Lou Lin Peng Yuan Peng Meng-Meng Wang Ming Zhang College of Railway Transportation Hunan University of TechnologyZhuzhou 412007China College of Semiconductors(College of Integrated Circuits) Changsha Semiconductor Technology and Application Innovation Research InstituteHunan UniversityChangsha 410082China Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China

Considering the intrinsic advantages of natural copiousness and cost-effectiveness of potassium resource,potassium-ion batteries(KIBs) are booming as prospective alternatives to lithium-ion batteries(LIBs) in large-scale energy storage scenarios. Nevertheless, lacking desirable electrodes for reversibly hosting the bulky K+hinders the widespread application of KIBs, and it needs to be urgently solved. Hereon, the porous S-doped Sb_(2)O_(3)-graphene-carbon(SAGC) nanofibers are manufactured through an adjustable and facile approach, which involves electrospinning, in situ etching and sulfuration. The synthesized SAGC is featured by the ultra-small amorphous Sb_(2)O_(3) homogeneously wrapped inside the carbon matrix, as well as the co-incorporation of graphene and sulfur. Tentatively,the SAGC nanofiber sheets are applied as binder-free anodes for KIBs, exhibiting a prominent cycling life(256.72 m Ah·g^(-1) over 150 cycles at 100 m A·g^(-1)) and rate·g^(-1) over 100 cycles at 1 A·g^(-1)). The positive synergy among all the active components accounts for the distinguished performances of the SAGC. By reinforcing the tolerability to the swelling stress, producing the valid electrochemical active sites, and promoting the charge transferring for reversible K+uptake, the SAGC finally renders the excellent cyclability, capacity, and rate capability. Moreover, the extrinsic electrochemical pseudocapacitance characteristics induced by the porous carbon substrate elevate the K-storage capacity of the SAGC as well. It is hoped that the conclusions drawn may offer new insights into a direction for the high-performance binderfree KIB anodes.

关键词： S-doped Sb_(2)O_(3)-graphene-carbon Nanofibers Binder-free Anodes Potassium-ion batteries

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Deep-learning-based photoacoustic finger vein image recognition 11

Deep-learning-based photoacoustic finger vein image recognit...

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optoelectronic Imaging and Multimedia technology XI 2024

作者： Li, Cunhao Cui, Zekun Li, ZhiFang Yu, Biying Wu, Shulian Li, Wangbiao Zhang, Xiaoman Key Laboratory of Optoelectronic Science and Technology for Medicine Ministry of Education Fujian Provincial Key Laboratory of Photonics Technology Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application College of Photonic and Electronic Engineering Fujian Normal University Fujian Fuzhou China

ISBN: (纸本)9781510682061

Compared to traditional identification technology, biometric technology has attracted a lot of attention because it highlights the special physiological characteristics and behavioural patterns of the human body. Among many biometric technologies, finger vein recognition technology is highly resistant to forgery, reliable, and unaffected by changes in skin surface conditions. In this study, a specially designed 128-ring array fast photoacoustic imaging system is used to accurately capture finger vein, muscle and skin images for information acquisition. The image segmentation algorithm in deep learning was used to remove the noise from the images, and then using the uniqueness of finger veins and muscle structures between individuals, the features of each image were automatically extracted using a 2D convolutional neural network to produce the classification results for each image, which were then ensemble to produce the identification results for each subject. © 2024 SPIE.

关键词： Image segmentation

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Classification by VGG-Net for three stages of coagulation dynamic process

Classification by VGG-Net for three stages of coagulation dy...

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2024 International Conference on Next Generation Electronics and Photonics, INGEP 2024

作者： Li, Yao Li, Wangbiao Zhang, Xiaoman Lin, Hui Li, Zhifang Key Laboratory of Optoelectronic Science and Technology for Medicine Ministry of Education Fujian Provincial Key Laboratory of Photonics Technology Fujian Provincial Engineering Technology Research Center of Photoelectric Sensing Application College of Photonic and Electronic Engineering Fujian Normal University Fujian Fuzhou China

In this study, we employed a method integrating Optical Coherence Tomography (OCT) with the Visual Geometry Group (VGG-Net) frameworks within a Convolutional Neural Network (CNN) for quantitative characterization of t... 详细信息

关键词： Coagulation

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