Journal of Nanoelectronics and Optoelectronics最新文献_第8页

Characterization of Heat-Resistant Insulating Impregnating Varnish Based on Bismaleimide/Diamine Copolymer 双马来酰亚胺/二胺共聚物耐热绝缘浸渍清漆的表征

4区工程技术

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-06-01 DOI: 10.1166/jno.2023.3438

Meijun Bao, Hong Zheng, Guowei Zhao, Jiangyang Zhang, Jiahao Shi

{"title":"Characterization of Heat-Resistant Insulating Impregnating Varnish Based on Bismaleimide/Diamine Copolymer","authors":"Meijun Bao, Hong Zheng, Guowei Zhao, Jiangyang Zhang, Jiahao Shi","doi":"10.1166/jno.2023.3438","DOIUrl":"https://doi.org/10.1166/jno.2023.3438","url":null,"abstract":"With the development of high-voltage electrical equipment towards the direction of higher power density and higher voltage level, it will resulting in the temperature-resistant grade of insulating dip varnish. Bismaleimide (BMI) resin used as the matrix resin of dip varnish solution is widely applied due to its good aging resistance, mechanical properties and dielectric properties. Due to the imide ring structure in BMI resin structure, the bonding energy of chemical bonds in the molecule is higher. The resin reacts less at lower temperatures, resulting in the difficulty of forming and processing. The high crosslinking density of condensates results in unsatisfactory mechanical properties of BMI resin and presents a poor toughness. Therefore, this paper uses Michael addition reaction to prepare branched resin with large free volume from binary amine and BMI resin, and explores various properties of its cured products. The results show that: Using different kinds and different contents of binary amines, its insulation performance was further improved. MT-cured sample had the best comprehensive performance, with a minimum dielectric constant of 3.24. The minimum dielectric loss of BAPP cured sample was 0.00135. The maximum volume resistivity of FDA sample was 2.46×10 15 Ω·m and the maximum breakdown field strength of BAPP sample was 29.83 kV/mm; The mechanical properties were significantly improved, and the maximum mechanical strength of the MT samples reached 174.63 MPa.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135143050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fault Diagnosis of Support Vector Machine Analog Circuits Based on Improved Particle Swarm Optimization 基于改进粒子群优化的支持向量机模拟电路故障诊断

4区工程技术

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-06-01 DOI: 10.1166/jno.2023.3417

Junping Yang, Qinghua Song

{"title":"Fault Diagnosis of Support Vector Machine Analog Circuits Based on Improved Particle Swarm Optimization","authors":"Junping Yang, Qinghua Song","doi":"10.1166/jno.2023.3417","DOIUrl":"https://doi.org/10.1166/jno.2023.3417","url":null,"abstract":"The development of electronic circuits requires that the reliability and security of circuit equipment and system operation are also increasing. In addition, due to the complexity of the operating environment, it is very important to strengthen the fault diagnosis and real-time testing technology of analog circuits in circuit systems. Based on this, this paper studied the fault diagnosis of analog circuits with Support Vector Machine (SVM), and introduced Improved Particle Swarm Optimization (IPSO) algorithm to optimize the parameters of SVM. In other words, the dynamic weight setting and factor improvement of Particle Swarm Optimization (PSO) algorithm aim to accelerate algorithm performance improvement, and information extraction and diagnosis model construction are carried out on the basis of considering circuit fault characteristics. Through the performance test and application analysis of the improved algorithm proposed in the study, the error value of the improved algorithm was basically stable at 0.0103 in the late stage of classification training, and its prediction accuracy rate was more than 80%, and the classification consumption time was less. At the same time, the accuracy of fault feature extraction results in training and test scenarios was above 94%, and the search performance was obviously better than other comparison algorithms, which effectively improved the fault diagnosis accuracy and efficiency. The IPSO algorithm model can effectively identify analog circuit fault information, and shows good information optimization performance. It has certain validity and rationality in circuit fault diagnosis and security assurance.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135143051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-Dimensional Architecture of Sulfur Doped Graphene for Supercapacitor 硫掺杂石墨烯超级电容器的三维结构

4区工程技术

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-06-01 DOI: 10.1166/jno.2023.3442

Changwang Li, Xu Wang, Gengzheng Liu, Zefei Guo, Bowang Zhao, Jiayu Liang, Ahmad Umar, Huilian Hao, Wenyao Li

引用次数: 2

Design of New Photonic Crystal Fiber for Orbital Angular Momentum Modes Transmission 用于轨道角动量模式传输的新型光子晶体光纤设计

4区工程技术

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-06-01 DOI: 10.1166/jno.2023.3443

Jing-Xuan Yang, Li-Min Cheng, Wei Li

引用次数: 0

Study on Dry-Coupled Ultrasonic Transducer for Solid Rocket Motor Detection 用于固体火箭发动机检测的干耦合超声换能器研究

4区工程技术

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-06-01 DOI: 10.1166/jno.2023.3445

Cai Xiaofeng, N. P. Yadav, Wang Jun

{"title":"Study on Dry-Coupled Ultrasonic Transducer for Solid Rocket Motor Detection","authors":"Cai Xiaofeng, N. P. Yadav, Wang Jun","doi":"10.1166/jno.2023.3445","DOIUrl":"https://doi.org/10.1166/jno.2023.3445","url":null,"abstract":"In order to develop a dry-coupled ultrasonic transducer that can detect the internal defects of a solid rocket motor, the piezoelectric vibrator was studied by the finite element method with multiple physical field couplings. Firstly, the vibration modes and corresponding resonant frequencies of the piezoelectric vibrators at 20–300 kHz without power were solved, and it was determined that the piezoelectric vibrator can adopt the structure form of bi-laminated, series three laminated, and parallel three laminated preliminarily. Then the frequency response of the piezoelectric vibrators was analyzed according to the admittance-frequency relation. It was found that the bending vibration mode of bi-laminated and parallel three-laminated boards could be excited when the electrical load was applied to both ends. Then, it is found that the parallel three-layer laminate has a larger amplitude in the direction of thickness and a higher electromechanical conversion efficiency based on transient analysis. Therefore, the parallel three-layer laminate is finally selected as the basic form of a piezoelectric vibrator. In addition, the amplitude performance of piezoelectric vibrators with matching layers and backing is compared and analyzed, and these structures are determined not to be used in the dry coupling transducer.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135142789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Wide Spectrum Yb-Doped All-Fiber-Integrated Chirped Pulse Amplification System Based on Parabolic Shaping 基于抛物线整形的宽谱掺镱全光纤集成啁啾脉冲放大系统

4区工程技术

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-06-01 DOI: 10.1166/jno.2023.3416

Zhixue Tian, Hangkai Qiu, Hui Wang, Kun Qian, Jiang Luo, Shan Lin, Jiongjiong Du, Disong Chen, Zunliang Wang, Zhu Chen, Hui Chen, Song Li, Nongyue He, Chao Wang

{"title":"A Wide Spectrum Yb-Doped All-Fiber-Integrated Chirped Pulse Amplification System Based on Parabolic Shaping","authors":"Zhixue Tian, Hangkai Qiu, Hui Wang, Kun Qian, Jiang Luo, Shan Lin, Jiongjiong Du, Disong Chen, Zunliang Wang, Zhu Chen, Hui Chen, Song Li, Nongyue He, Chao Wang","doi":"10.1166/jno.2023.3416","DOIUrl":"https://doi.org/10.1166/jno.2023.3416","url":null,"abstract":"Nonlinear effect in an ultrafast fiber laser has always been a major obstacle in realization of laser with narrow pulse width and high energy. To achieve higher peak power, we herein introduce pre-chirping management and pre-amplification before the chirped pulse amplification (CPA) system. The self-phase modulation effect is used to effectively stretch the spectrum when the pulse reaches a high peak power, and then the parabolic pulse and spectrum are obtained in a fiber amplifier. This parabolic pulse effectively reduces the impact of nonlinear effect in subsequent fiber amplifier and realizes the amplification of chirped pulse with a higher peak power compared with conventional CPA system. We finally achieved a mode-locked pulse with 143 fs pulse duration, 8.57 W average power, 85.7 μ J single pulse energy, M 2 < 1.10 beam quality, and without obvious pulse degeneration. The reported pulse energy is the highest among all-fiber CPA systems based on nonlinear amplification technology.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135143047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Image and Velocity Profile Reconstruction Using a Customized 8–16 Electrode Electrical Capacitance Tomography Sensor Based on LabVIEW Simulation 基于LabVIEW仿真的自定义8-16电极电容层析成像传感器图像和速度剖面重建

4区工程技术

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-06-01 DOI: 10.1166/jno.2023.3423

Sidi M. Ahmed Ghaly, M. Y. Shalaby, Khaled Al-Snaie, Majdi Oraiqat, Mohammad O. Khan

{"title":"Image and Velocity Profile Reconstruction Using a Customized 8–16 Electrode Electrical Capacitance Tomography Sensor Based on LabVIEW Simulation","authors":"Sidi M. Ahmed Ghaly, M. Y. Shalaby, Khaled Al-Snaie, Majdi Oraiqat, Mohammad O. Khan","doi":"10.1166/jno.2023.3423","DOIUrl":"https://doi.org/10.1166/jno.2023.3423","url":null,"abstract":"Electrical Capacitance Tomography is a method for determining the dielectric permittivity distribution inside an object from the measurement of the external capacitances of a multi-electrode assembly. The measuring electrodes, which are metal plates, must be large enough to give a measurable change in capacitance. In this article, the performance of the ECT sensor, the sensitivity matrix, and hence the reconstructed image quality and the velocity profiles are improved. A typical customized 16–8 electrode ECT sensor is proposed, simulated, and implemented on the LabVIEW platform in contrast with a set of standard 8, 12, and 16-electrode ECT sensors. The results of these types of sensors are noted and compared to each other, focusing on the customized sensor. It is observed from the results obtained during this simulation experiment that the performance of the customized 16–8 electrode ECT sensor is comparatively better and exhibits better quality and performance with respect to its image and velocity reconstruction. The comparison of results further demonstrated that the correlation coefficient changes from 0.61 to 0.96, and the error images are within 0.3 to 0.1 for the SNRs going from 60 to 90 dB. It was also observed that the reconstructed velocity profiles are consistent with the original expected velocity profiles for the customized 8–16-electrode ECT sensor.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135219990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Solar-Blind Ultraviolet Detection Based on Algan/GaN Heterojunction 基于Algan/GaN异质结的日盲紫外探测

IF 0.6 4区工程技术

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-05-01 DOI: 10.1166/jno.2023.3426

Lechen Yang, Kai Fu, Min Xiong, Haijun Li, Wenhua Shi, Baoshun Zhang

引用次数: 0

Design of a Flexible Hinged Piezoelectric Viscous Slip Actuator with Retraction Suppression 柔性铰链压电滞滑驱动器的设计与收缩抑制

IF 0.6 4区工程技术

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-05-01 DOI: 10.1166/jno.2023.3433

Xia Liu, Tongyu Wang, Jinlong Liu, Jun Hou, Houjun Gai, Jie Yang, Zhenwen Sun, Xiao-chao Tian

{"title":"Design of a Flexible Hinged Piezoelectric Viscous Slip Actuator with Retraction Suppression","authors":"Xia Liu, Tongyu Wang, Jinlong Liu, Jun Hou, Houjun Gai, Jie Yang, Zhenwen Sun, Xiao-chao Tian","doi":"10.1166/jno.2023.3433","DOIUrl":"https://doi.org/10.1166/jno.2023.3433","url":null,"abstract":"In order to solve the displacement regression phenomenon of piezoelectric viscous-slip actuators, this paper proposes a lever-type flexible hinge mechanism that uses two sets of piezoelectric stacks to move the slider in both directions and efficiently suppress the displacement regression\u0000 phenomenon. First, the overall dimensional parameters of the drive are designed, the device is modeled using 3D software, and the driving principle is analyzed. Then a theoretical model is built based on the lever amplification principle to derive the relevant expressions for the piezoelectric\u0000 viscous slip actuator under sawtooth wave type voltage signals. The piezoelectric stack is simulated and analyzed with COMSOL Multiphysics to obtain the modal and stress-displacement clouds of the flexible hinges. Finally, a prototype was built for experimental testing, and the slider in the\u0000 device was able to achieve smooth motion and effectively suppress the displacement regression phenomenon. The input voltage of piezo stack A is 100 V, the input voltage of piezo stack D is 150 V, the input frequency is 212 Hz, the maximum output displacement of single-step drive is\u0000 46.6 μm, and the amplification ratio of flexible hinge input to output is 2.59. The piezoelectric viscous-slip actuator was verified to be able to achieve effective drive and suppress back-off.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41781048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of Perovskite-Solar-Cells with AlOx Passivated NiOx Hole-Transport-Film AlOx钝化NiOx空穴传输膜优化钙钛矿太阳能电池

IF 0.6 4区工程技术

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-05-01 DOI: 10.1166/jno.2023.3434

Lei Zhu, Yongshan Qin, Yulong Zhao, Jian Song

引用次数: 0