Journal of Nanoelectronics and Optoelectronics最新文献

{"title":"Electrochemical Micro-Reaction and Failure Mechanism of New Materials Used at Low Temperature in Coastal Environment","authors":"Dongjiu Zhang, Haiwang Wang, Shengju Song, Yuchao Wang, Hua Yang, Yilong Sun, Wen’an Zhong, Sheng Zhong, Honglun Wang, Feixiong Mao, Congqian Cheng","doi":"10.1166/jno.2023.3471","DOIUrl":"https://doi.org/10.1166/jno.2023.3471","url":null,"abstract":"The research on the preparation and performance of new materials used at low-temperature fuels in coastal environments, which has very important academic value. This article explores the failure mechanism of the type of new materials through a flow microreactor in electrosynthetic processes. The results show that the introduction of ferric chloride (FeCl3), ferrous carbonate (FeCO3), iron oxide (FeO), ferric oxide (Fe3O4) and alumina (Al2O3) can increase the probability of electrochemical processes to accelerate local corrosion. The damaged passivation film on the surface of the material is not protective over time, and the corrosion cell formed with the substrate accelerates the corrosion process.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"59 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139325407","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}

{"title":"Enhanced Nanoelectronic Detection and Classification of Motor Imagery Electroencephalogram Signal Using a Hybrid Framework","authors":"Mohammad Khalid Imam Rahmani, Sultan Ahmad, Mohammad Rashid Hussain, Aso Khaleel Ameen, Aleem Ali, Faisal Shaman, Aziz Alshehri, Muhammad Shahid Dildar, Reyazur Rashid Irshad, Asharul Islam","doi":"10.1166/jno.2023.3504","DOIUrl":"https://doi.org/10.1166/jno.2023.3504","url":null,"abstract":"Motor imagery-based electroencephalogram (MI-EEG) signal classification plays a vital role in the development of brain-computer interfaces (BCIs), particularly in providing assistance to individuals with motor disabilities. In this study, we introduce an innovative and optimized hybrid framework designed for the robust classification of MI-EEG signals. Our approach combines the power of a Deep Convolutional Neural Network (DCRNN) with the efficiency of the Ant Lion Optimization (ALO) algorithm. This framework consists of four key phases: data acquisition, pre-processing, feature engineering, and classification. To enhance the signal quality, our work incorporates adaptive filtering and independent component analysis (ICA) during the pre-processing phase. Feature extraction is carried out using a deep autoencoder. For classification, we employ the DCRNN, and further enhance its performance with the ALO algorithm to optimize training and classification processes. The study is implemented in MATLAB and evaluated using the PhysioNet dataset. Experimental results demonstrate the effectiveness of our proposed method, achieving an impressive accuracy of 99.32%, a precision of 99.41%, a recall of 99.29%, and an f-measure of 99.32%. These results surpass the performance of existing classification strategies, highlighting the potential of our hybrid framework in MI-EEG signal classification for various BCI applications.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"10 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139331027","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}

{"title":"Construction and Application of Trajectory Data Analysis Model Based on Big Data and Stochastic Gradient Descent Algorithm","authors":"Jianhua Xie, Zhongming Yang, Wenquan Zeng, Yongjun He, Fagen Gong, Xi Zhao, Xibin Sun, Saad Aldosary","doi":"10.1166/jno.2023.3492","DOIUrl":"https://doi.org/10.1166/jno.2023.3492","url":null,"abstract":"This paper studies the model construction of computing and storage resource management system framework based on Hadoop and the implementation of trajectory data analysis function under big data. Relying on the cloud platform infrastructure, in order to support the rapid data growth and massive data processing needs, it provides a mixed storage and analysis platform for structured and unstructured data, and uses big data technology to build a highly scalable and distributed data processing framework. The distributed computation, overall frame model of the memory system, and function module have been built with the aim of constructing the system in consideration. Second, by using Hadoop to preprocess the original data and concentrating on the data hierarchical design model and key technology analysis of big data systems, the design model, functional modules, technological solutions, and SGD algorithm are suggested, along with the detailed implementation procedure. Lastly, by merging the data of running vehicles, the system accomplishes the data analysis of vehicle trajectory, empty and load cars, and load and unload people.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139328071","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}

{"title":"Super-Resolution Reconstruction Based on Denoised High-Resolution Raw Images with BM3D","authors":"T. Cheng, Cong Xu","doi":"10.1166/jno.2023.3478","DOIUrl":"https://doi.org/10.1166/jno.2023.3478","url":null,"abstract":"The pixel in a conventional raw image (CR) and the point spread function’s standard deviation of the microscope are approximately equal in size. A high-resolution raw image (HR) lacks research value due to excessive noise. Its pixel size is only half that of CR. BM3D is an excellent denoising algorithm. We propose a super-resolution microscopy method. It denoises HR and uses compressed sensing for super-resolution reconstruction. It was compared with that of HR before denoising, and CR before and after denoising. HR and CR with three different noise levels (low, medium, and high) are studied in simulation. Simulation results demonstrate that BM3D is not only related to the noise type and the noise level, but also to the raw image’s pixel size. In the medium noise level, denoised HR performed the best super-resolution reconstruction, followed by denoised CR. Real experiment results are closer to the simulation results in the medium noise level.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"4 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139329535","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}

{"title":"Synthesis and Characterization of BaO-Enhanced Therm500 Nanofluids","authors":"P. Prakash, A. Kingson Solomon Jeevaraj, Mohamed Hashem, Hassan Fouad, M. Shaheer Akhtar","doi":"10.1166/jno.2023.3493","DOIUrl":"https://doi.org/10.1166/jno.2023.3493","url":null,"abstract":"In this study, we enhance the thermal conductivity of the conventional heat transfer fluid Therm500 by incorporating BaO nanoparticles. BaO:Therm500 nanofluids are synthesized and characterized at various concentrations (ranging from 0.001 to 0.006 g) and temperatures (300 K, 303 K, 313 K, and 323 K). The investigation includes the use of FT-IR spectroscopy to analyze the interaction between BaO nanoparticles and Therm500. Our findings indicate that there is no significant particle-fluid interaction. The enhanced thermal conductivity observed in BaO:Therm500 nanofluids is attributed to multiple factors. As the temperature increases, the viscosity of the nanofluid decreases, resulting in increased Brownian motion of nanoparticles and convective-like effects, ultimately leading to improved thermal conductivity. Additionally, we report the acoustic properties of BaO-Enhanced Therm500 nanofluids at the same four temperatures (300 K, 303 K, 313 K, and 323 K). Density, refractive index, and ultrasonic velocity measurements are performed for six different molar concentrations of BaO nanofluids (0.001 g, 0.002 g, 0.003 g, 0.004 g, 0.005 g, and 0.006 g). Subsequently, various acoustical parameters, such as adiabatic compressibility (β), intermolecular free length (Lf ), specific acoustic impedance (Z), Rao’s constant (R), molar compressibility (W), viscous relaxation time (τ), free volume (Vf ), Gibbs free energy (ΔG), and internal pressure (πi), are calculated. These acoustical characteristics are utilized to investigate molecular interactions within the nanofluid system. The study reveals a non-linear relationship between ultrasonic velocity and particle concentration, which is attributed to weak particle-fluid interactions. These findings provide valuable insights into the preparation and characterization of BaO-enhanced Therm500 nanofluids and their potential applications in heat transfer systems.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"39 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139344936","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}

{"title":"Effect of Diffusion on Charge Transport in Organic Photovoltaic Blends","authors":"L. G. Wang, Z. H. Liu, L. Z. Wang, L. Zhang","doi":"10.1166/jno.2023.3479","DOIUrl":"https://doi.org/10.1166/jno.2023.3479","url":null,"abstract":"Charge transport is one of the key factors in the operation of organic photovoltaic devices. Non-fullerene acceptor materials have recently attracted significant attention in organic photovoltaics due to their great potential to realize high power conversion efficiencies. In this paper, we investigate the effect of diffusion on charge transport in a variety of binary and ternary organic photovoltaic materials, including both polymer: fullerene and polymer:non-fullerene blends. It is shown that the temperature dependent current density-voltage characteristics from the drift-diffusion simulations incorporating the extended Gaussian disorder model (EGDM) are more consistent with experimental data in comparison with those obtained from the only drift model for all these material systems. Furthermore, it is found that the effect of diffusion on charge transport is more pronounced at low voltages and seems to be negligible when the applied voltage exceeds 1 V. The deviation of calculated curves from experimental measurements gradually increases with increasing temperature. It is of great importance to the influence of diffusion effect on charge transport in both polymer:fullerene and polymer:non-fullerene blends.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"59 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139345105","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}

{"title":"Performance of the Internal Mixer’s end Face Mechanical Seal with Isosceles Right Triangle Textures","authors":"Ze-Sheng Wang, Fu-Qin Yang, Yu-Meng Song, Xiao-Jie Han","doi":"10.1166/jno.2023.3489","DOIUrl":"https://doi.org/10.1166/jno.2023.3489","url":null,"abstract":"To improve the sealing performance and prolong the service life of the internal mixer’s end face mechanical seal, the surface texture technology was introduced to the end face mechanical seal in this paper. Different arrangements of isosceles right triangle textures were designed on the rotating sealing ring to study the effects of texture parameters and working parameters on the performance of the textured mechanical seal. The results indicate that under steady-state conditions, different arrangements of isosceles right triangle textures produce obvious hydrodynamic pressure effects and cause the mechanical seal to produce oil film capacity. Meanwhile, the Rt2 arrangement mechanical seal can obtain the lowest end leakage. What’s more, Rt1, Rt2, Rt3, and Rt4 arrangements show better sealing performance when their texture area ratio Sp = 21%, 39%, 21%, 30%, respectively, so do the four arrangements when their texture depths hp = 2∼4 μm. Appropriately reducing the rotor speed n and increasing lubricant viscosity η is helpful to improve the work performance of the textured mechanical seal. Under unsteady-state conditions, the maximum oil film pressure, leakage, friction coefficient and sealing gap of the textured mechanical seal change periodically with the load. When hp = 3 μm, the Rt2 arrangement has lower leakage and friction coefficient. Further, lower speed and lubricant viscosity are beneficial to reducing the leakage and friction of the textured mechanical seal of the internal mixer.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"59 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139345213","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}

{"title":"Design of Low Power Temperature Sensor Based on Full Resistance Frequency Domain Readout","authors":"Zengjun Wang, Yu Xian","doi":"10.1166/jno.2023.3482","DOIUrl":"https://doi.org/10.1166/jno.2023.3482","url":null,"abstract":"Combining with on-chip heat management application scenario, firstly, this paper introduces the advantages of resistance-based frequency-domain readout all-digital temperature sensor and its poor ability to resist power supply fluctuation, as well as the existing solutions, the basic principle of digital temperature sensor with anti-power fluctuation suppression is analyzed, and its feasibility is proved by system modeling and theoretical analysis. Secondly, based on the proposed architecture, a new kind of near-digital temperature sensor architecture is proposed, which adopts a ring oscillator dominated by leakage current, thus it can work directly in a wide voltage range from 0.8 V to 1.3 V without the need for a separate regulator. Finally, to further optimize the power consumption, a delay cell structure with lower power consumption and stronger robustness is proposed to further reduce the overall power consumption. The results show that the improved temperature sensor achieves lower power consumption and higher energy efficiency while keeping a small area, and it is advanced compared with other high level temperature sensors.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"65 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139345365","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}

{"title":"Design of Light Emitting Diode-Based Fiber Optic Current Sensor and Its Application in Pollution Flash Prevention in Digitalized Substations","authors":"Jingxiang Li, Hao Lai, Haitao Yin, Xiaopeng Xia","doi":"10.1166/jno.2023.3497","DOIUrl":"https://doi.org/10.1166/jno.2023.3497","url":null,"abstract":"Prevention of pollution flash in electrical equipment in digitalized substations and transmission lines has always been a crucial part of power operation. In order to prevent pollution flash, it is essential to detect the contamination of electrical equipment. The measurement of leakage current is a fundamental aspect of preventive pollution flash work in electrical equipment. Applying fiber optic current sensors to online monitoring systems in the power system offers advantages such as resistance to harsh environments, immunity to electromagnetic interference, and resistance to chemical corrosion. This study designs a unidirectional half-wave fiber optic current sensor based on Light Emitting Diodes (LED) for selectively observing the positive and negative half-cycles of leakage current. Due to the light emission and unidirectional conduction characteristics of LED, with a well-designed circuit, LED performs photoelectric conversion on the current, allowing the sensor to selectively measure the positive and negative half-cycles of leakage current. Subsequently, a combination circuit of silicon detectors and amplifiers is used to complete the photoelectric conversion, facilitating voltage signal measurement. In experiments, the response of the unidirectional half-wave LED fiber optic current sensor reached 37.8 mV/mA, with a detection bandwidth range between [1.2 kHz, 9.8 kHz]. In leakage current tests, using the leakage current of insulators as a reference, experiments were conducted using the voltage boosting method. As the applied voltage increased, the leakage current displayed on the sampling resistor increased, and the measurement waveform indicated that the sensor could correctly select the unidirectional half-wave. In leakage current and salt density tests, the designed fiber optic sensor accurately reflected the exponential relationship between insulator leakage current and contamination, demonstrating the practical value of the designed fiber optic current sensor.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"30 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139344795","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}

{"title":"Enhancing the Water Oxidation Performance of Bulk Al1.2CrFe2Ni2 High Entropy Alloy Through Deep Cryogenic Treatment","authors":"Xue-cai Zhang","doi":"10.1166/jno.2023.3486","DOIUrl":"https://doi.org/10.1166/jno.2023.3486","url":null,"abstract":"Owing to the distinctive physical and chemical characteristics of high entropy alloys (HEAs), their application in electrocatalysis has become a possibility. However, selecting appropriate means to improve the oxygen evolution reaction (OER) performance of bulk HEAs remains an urgent problem. In this study, we obtained an OER electrocatalyst containing FCC + BCC phase bulk HEAs with high catalytic activity through simple vacuum melting and deep cryogenic treatment. After 36 hours of treatment, the overpotential of Al1.2CrFe2Ni2 HER is 278.8 mV at 10 mA cm−2 for OER with a small Tafel slope of 53.45 mV dec−1. The catalyst can be continuously electrolyzed in 1 M KOH for over 50 hours. This work confirms the potential of deep cryogenic treatment to improve the performance of bulk HEA catalysts for OER.","PeriodicalId":16446,"journal":{"name":"Journal of Nanoelectronics and Optoelectronics","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139346101","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}