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
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.
{"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}
Sidi M. Ahmed Ghaly, M. Y. Shalaby, Khaled Al-Snaie, Majdi Oraiqat, Mohammad O. Khan
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.
{"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}
Lechen Yang, Kai Fu, Min Xiong, Haijun Li, Wenhua Shi, Baoshun Zhang
A solar-blind ultraviolet metal-semiconductor-metal photodetector based on dual-color AlGaN/GaN heterostructure was fabricated and tested. The device showed good photo-response in solar-blind ultraviolet, by employing a single AlGaN/GaN layer. Spectrum responses of the photodetector were investigated by changing the frequency of incident light signals and the bias voltages. The peak response was 0.288 A/W at 260 nm and 0.322 A/W at 366 nm at the bias of 5 V.
{"title":"Solar-Blind Ultraviolet Detection Based on Algan/GaN Heterojunction","authors":"Lechen Yang, Kai Fu, Min Xiong, Haijun Li, Wenhua Shi, Baoshun Zhang","doi":"10.1166/jno.2023.3426","DOIUrl":"https://doi.org/10.1166/jno.2023.3426","url":null,"abstract":"A solar-blind ultraviolet metal-semiconductor-metal photodetector based on dual-color AlGaN/GaN heterostructure was fabricated and tested. The device showed good photo-response in solar-blind ultraviolet, by employing a single AlGaN/GaN layer. Spectrum responses of the photodetector\u0000 were investigated by changing the frequency of incident light signals and the bias voltages. The peak response was 0.288 A/W at 260 nm and 0.322 A/W at 366 nm at the bias of 5 V.","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":"43940185","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}
Xia Liu, Tongyu Wang, Jinlong Liu, Jun Hou, Houjun Gai, Jie Yang, Zhenwen Sun, Xiao-chao Tian
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 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 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 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 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.
{"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}
Perovskite solar cells have good photoelectric performance and simple fabrication process which received extensive attention in recent years. However, defects-induced carrier recombination strictly inhibits the photovoltaic performance of the device. This paper proposes a simple, fast and efficient interfacial passivation strategy based on sol–gel micro-reaction. The AlOx nanoparticles deposition at NiOx/perovskite interface reduces defect density providing inverted planar PVCs. The influence of aluminum sec-butoxide concentration on the morphology and optical properties of hole-transport layers discovered the internal relationship between the passivation parameters and the carrier transport process at NiOx/perovskite interface. This breakthrough investigation shows the increase in photoelectric efficiency from 12.26% to 14.54% and the retention efficiency from 63% to 72% after 240 h. Therefore, this feasible experiment for interfacial regulation and passivation for PSCs is a gate to new discoveries.
{"title":"Optimization of Perovskite-Solar-Cells with AlOx Passivated NiOx Hole-Transport-Film","authors":"Lei Zhu, Yongshan Qin, Yulong Zhao, Jian Song","doi":"10.1166/jno.2023.3434","DOIUrl":"https://doi.org/10.1166/jno.2023.3434","url":null,"abstract":"Perovskite solar cells have good photoelectric performance and simple fabrication process which received extensive attention in recent years. However, defects-induced carrier recombination strictly inhibits the photovoltaic performance of the device. This paper proposes a simple, fast\u0000 and efficient interfacial passivation strategy based on sol–gel micro-reaction. The AlOx nanoparticles deposition at NiOx/perovskite interface reduces defect density providing inverted planar PVCs. The influence of aluminum sec-butoxide concentration on the morphology\u0000 and optical properties of hole-transport layers discovered the internal relationship between the passivation parameters and the carrier transport process at NiOx/perovskite interface. This breakthrough investigation shows the increase in photoelectric efficiency from 12.26% to 14.54%\u0000 and the retention efficiency from 63% to 72% after 240 h. Therefore, this feasible experiment for interfacial regulation and passivation for PSCs is a gate to new discoveries.","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":"45402283","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}
In order to improve the efficiency and accuracy of damage detection of ancient buildings, a dielectrophoresis-assisted 3D LC-oscillator array in CMOS image senser for label-free and damage detection of ancient building is proposed to identify damage areas and achieve pixel-level semantic segmentation. The Grid-Deeplab model is used to model the sub-regions of the damaged image with different importance features. The model has the ability to distinguish the effective area of the image, thereby significantly improve the efficiency and accuracy of the damage detection model. Using the mean intersection over union as the evaluation standard, the proposed Grid-Deeplab model is tested through the data set with the existing U-Net, SegNet, FCN and Deeplab models. The results show that the mean intersection over union of the Grid-Deeplab optimization model on the test set reaches 0.77, and the recognition accuracy and training efficiency of the model are superior to other existing models.
{"title":"Dielectrophoresis-Assisted 3D LC-Oscillator Array in Complementary Metal Oxide Semiconductor Image Senser for Label-Free and Damage Detection of Ancient Building","authors":"Xuan Qin, X. Yang","doi":"10.1166/jno.2023.3431","DOIUrl":"https://doi.org/10.1166/jno.2023.3431","url":null,"abstract":"In order to improve the efficiency and accuracy of damage detection of ancient buildings, a dielectrophoresis-assisted 3D LC-oscillator array in CMOS image senser for label-free and damage detection of ancient building is proposed to identify damage areas and achieve pixel-level semantic\u0000 segmentation. The Grid-Deeplab model is used to model the sub-regions of the damaged image with different importance features. The model has the ability to distinguish the effective area of the image, thereby significantly improve the efficiency and accuracy of the damage detection model.\u0000 Using the mean intersection over union as the evaluation standard, the proposed Grid-Deeplab model is tested through the data set with the existing U-Net, SegNet, FCN and Deeplab models. The results show that the mean intersection over union of the Grid-Deeplab optimization model on the test\u0000 set reaches 0.77, and the recognition accuracy and training efficiency of the model are superior to other existing models.","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":"41891621","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}
Due to the lack of data cleaning links in traditional methods, there are many false alarms and the problem of susceptibility to noise during the monitoring process. For this reason, this paper proposes a condition monitoring-oriented wind turbine early fault rule k nearest neighbor matching method. Obtain static and dynamic parameters through identification of wind turbine operating state parameters, use nuclear density estimation repair method to repair missing data, use rule k nearest neighbor matching method to remove abnormal data and noise data, and use ReliefF algorithm to screen wind turbine operating faults based on data processing results feature. Finally, the uncertainty of the fault status of the wind turbine is analyzed, and the early fault monitoring platform of the wind turbine is established based on the analysis result to realize the early fault monitoring of the wind turbine. Experimental results show that the method has better anti-noise performance and lower fault false alarm rate.
{"title":"Condition Monitoring-Oriented Wind Turbine Early Fault Rule K-Nearest Neighbor Matching Method","authors":"Xiangqing Yin, Yi Liu, Wen-yuan Gao","doi":"10.1166/jno.2023.3430","DOIUrl":"https://doi.org/10.1166/jno.2023.3430","url":null,"abstract":"Due to the lack of data cleaning links in traditional methods, there are many false alarms and the problem of susceptibility to noise during the monitoring process. For this reason, this paper proposes a condition monitoring-oriented wind turbine early fault rule k nearest neighbor\u0000 matching method. Obtain static and dynamic parameters through identification of wind turbine operating state parameters, use nuclear density estimation repair method to repair missing data, use rule k nearest neighbor matching method to remove abnormal data and noise data, and use ReliefF\u0000 algorithm to screen wind turbine operating faults based on data processing results feature. Finally, the uncertainty of the fault status of the wind turbine is analyzed, and the early fault monitoring platform of the wind turbine is established based on the analysis result to realize the early\u0000 fault monitoring of the wind turbine. Experimental results show that the method has better anti-noise performance and lower fault false alarm rate.","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":"49655842","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}
CMOS temperature sensor is widely used in power monitoring system, power consumption is an important index. The digital filter power consumption is one of the main sources of the temperature sensor power consumption, and limiting the Digital filter power consumption becomes an important method to realize the low power consumption of the temperature sensor. Based on this, a low power digital filter for CMOS temperature sensors is designed, and a precision adaptive digital filter is proposed, the filter is cascaded by a recursive CIC filter and a FIR filter based on a shift adder, the order of CIC filter and FIR filter can be adjusted according to the difference between the measured temperature and the threshold temperature range set by the user, when the measured temperature is outside the threshold temperature range, the operation unit in the filter is selectively switched off, which makes the power consumption of the filter decrease. For the temperature range that does not need to be monitored, the requirement of temperature measurement accuracy is usually not high, if high-precision temperature monitoring is still carried out, it will have a lot of unnecessary power consumption, in this paper, an adaptive precision digital filter is used to solve the problem. In order to further reduce the power consumption of the temperature sensor, according to the characteristics of the slow change of the temperature signal, a single temperature conversion combined with idle off mode is adopted, the FIR filter power consumption is reduced by 5.5% by optimizing the single temperature conversion operation. The temperature sensor is realized by 180 nm CMOS process. The results show that the sensor can achieve an accuracy of 0.47 °C in the temperature range of −55–115 °C when the measured temperature is in the threshold temperature range, under 1.8 V supply voltage, the power consumption of the digital part of the sensor is 20.15 μw. When the measured temperature is outside the threshold temperature range, the power consumption of the digital part of the sensor can be reduced by 11.3%.
{"title":"Design of Low Power Temperature Sensor Based on 180 nm Complementary Metal Oxide Semiconductor Technology","authors":"Wenbin Liang, Zhenzhen Luo, Xian Yu, Xiaoyan Chen","doi":"10.1166/jno.2023.3422","DOIUrl":"https://doi.org/10.1166/jno.2023.3422","url":null,"abstract":"CMOS temperature sensor is widely used in power monitoring system, power consumption is an important index. The digital filter power consumption is one of the main sources of the temperature sensor power consumption, and limiting the Digital filter power consumption becomes an important\u0000 method to realize the low power consumption of the temperature sensor. Based on this, a low power digital filter for CMOS temperature sensors is designed, and a precision adaptive digital filter is proposed, the filter is cascaded by a recursive CIC filter and a FIR filter based on a shift\u0000 adder, the order of CIC filter and FIR filter can be adjusted according to the difference between the measured temperature and the threshold temperature range set by the user, when the measured temperature is outside the threshold temperature range, the operation unit in the filter is selectively\u0000 switched off, which makes the power consumption of the filter decrease. For the temperature range that does not need to be monitored, the requirement of temperature measurement accuracy is usually not high, if high-precision temperature monitoring is still carried out, it will have a lot of\u0000 unnecessary power consumption, in this paper, an adaptive precision digital filter is used to solve the problem. In order to further reduce the power consumption of the temperature sensor, according to the characteristics of the slow change of the temperature signal, a single temperature conversion\u0000 combined with idle off mode is adopted, the FIR filter power consumption is reduced by 5.5% by optimizing the single temperature conversion operation. The temperature sensor is realized by 180 nm CMOS process. The results show that the sensor can achieve an accuracy of 0.47 °C in the temperature\u0000 range of −55–115 °C when the measured temperature is in the threshold temperature range, under 1.8 V supply voltage, the power consumption of the digital part of the sensor is 20.15 μw. When the measured temperature is outside the threshold temperature range, the\u0000 power consumption of the digital part of the sensor can be reduced by 11.3%.","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":"46415966","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}
Shoaib Nazir, Muhammad Junaid, Jian-Min Zhang, Numan Abbas, Gideon F B Solre, Yanting Liu
The current study involved the synthesis of magnesium zinc ferrite (Mg0.8Zn0.2Fe1.4Al0.6O4) using the sol–gel method. Various techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier Transform Infrared (FTIR), vibrating sample magnetometer (VSM), and radiofrequency (RF) induction were utilized to analyze the properties of the synthesized ferrite nanoparticles. The objective was to examine how different sintering temperatures affected the structural and magnetic characteristics of Mg0.8Zn0.2Fe1.4Al0.6O4. The XRD analysis confirmed the presence of a well-defined single phase crystalline structure with a spinel arrangement. Increasing the annealing temperature resulted in larger nanoparticles, ranging from 28.38 nm to 30.14 nm. SEM provided information about the morphology, agglomeration, and grain size of the ferrite, revealing a grain size ranging from 326 nm to 485 nm. The FTIR spectroscopy indicated a single-phase spinel structure for the prepared sample. The magnetic properties of the sample were evaluated using VSM, showing a maximum magnetization of 45.6 emu/gm and the least coercivity of 90 Oe at an annealing temperature of 900 °C. RF induction at a frequency of 108 kHz exhibited superior results for the sample annealed at 900 °C compared to those annealed at 700 °C and 800 °C. At this frequency, the specific absorption rate (SAR) value was high, making it suitable for magnetic hyperthermia applications. The prepared magnesium zinc ferrite demonstrated suitability for both low and high frequency devices, and it could be employed in various technological applications, including microwave devices, inductor cores, transformers, and other electronic devices.
{"title":"A Comparative Study on the Effect of Different Sintering Temperatures on Structural and Magnetic Properties of Mg–Zn Ferrite Nanoparticles","authors":"Shoaib Nazir, Muhammad Junaid, Jian-Min Zhang, Numan Abbas, Gideon F B Solre, Yanting Liu","doi":"10.1166/jno.2023.3428","DOIUrl":"https://doi.org/10.1166/jno.2023.3428","url":null,"abstract":"The current study involved the synthesis of magnesium zinc ferrite (Mg0.8Zn0.2Fe1.4Al0.6O4) using the sol–gel method. Various techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier Transform\u0000 Infrared (FTIR), vibrating sample magnetometer (VSM), and radiofrequency (RF) induction were utilized to analyze the properties of the synthesized ferrite nanoparticles. The objective was to examine how different sintering temperatures affected the structural and magnetic characteristics of\u0000 Mg0.8Zn0.2Fe1.4Al0.6O4. The XRD analysis confirmed the presence of a well-defined single phase crystalline structure with a spinel arrangement. Increasing the annealing temperature resulted in larger nanoparticles, ranging from 28.38 nm\u0000 to 30.14 nm. SEM provided information about the morphology, agglomeration, and grain size of the ferrite, revealing a grain size ranging from 326 nm to 485 nm. The FTIR spectroscopy indicated a single-phase spinel structure for the prepared sample. The magnetic properties of the sample were\u0000 evaluated using VSM, showing a maximum magnetization of 45.6 emu/gm and the least coercivity of 90 Oe at an annealing temperature of 900 °C. RF induction at a frequency of 108 kHz exhibited superior results for the sample annealed at 900 °C compared to those annealed at 700 °C\u0000 and 800 °C. At this frequency, the specific absorption rate (SAR) value was high, making it suitable for magnetic hyperthermia applications. The prepared magnesium zinc ferrite demonstrated suitability for both low and high frequency devices, and it could be employed in various technological\u0000 applications, including microwave devices, inductor cores, transformers, and other electronic devices.","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":"49469736","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}
In order to eliminate the internal harmonics of the magnetic latching relay caused by the load input, an ADALINE-based magnetic latching relay power quality optimal control model for charging stations was constructed. Calculate the sampling point of the input signal through the ADALINE neural network, obtain the error signal between the input signal and the measured signal, use the VSLMS algorithm to continuously adjust the weight value to update the spectrum in real time, detect the harmonics existing in the magnetic latching relay, and use the harmonics. The droop control strategy calculates the amount of harmonic voltage that needs to be compensated, and participates in the on-off control of the magnetic latching relay by calculating the modulation wave difference formed by the fundamental wave and the harmonic voltage closed loop, eliminating the harmonics generated by the nonlinear load, and realizing electric energy optimal quality control. The experimental results show that the model can accurately detect and eliminate the internal harmonics of the magnetic latching relay caused by the load input, and has a better control effect on the power quality of the magnetic latching relay used in the charging station.
{"title":"Optimal Power Quality Control Model of Magnetic Latching Relay for Charging Station Based on Adaline","authors":"Yidan Hu","doi":"10.1166/jno.2023.3420","DOIUrl":"https://doi.org/10.1166/jno.2023.3420","url":null,"abstract":"In order to eliminate the internal harmonics of the magnetic latching relay caused by the load input, an ADALINE-based magnetic latching relay power quality optimal control model for charging stations was constructed. Calculate the sampling point of the input signal through the ADALINE\u0000 neural network, obtain the error signal between the input signal and the measured signal, use the VSLMS algorithm to continuously adjust the weight value to update the spectrum in real time, detect the harmonics existing in the magnetic latching relay, and use the harmonics. The droop control\u0000 strategy calculates the amount of harmonic voltage that needs to be compensated, and participates in the on-off control of the magnetic latching relay by calculating the modulation wave difference formed by the fundamental wave and the harmonic voltage closed loop, eliminating the harmonics\u0000 generated by the nonlinear load, and realizing electric energy optimal quality control. The experimental results show that the model can accurately detect and eliminate the internal harmonics of the magnetic latching relay caused by the load input, and has a better control effect on the power\u0000 quality of the magnetic latching relay used in the charging station.","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":"46741955","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}
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