Pub Date : 2020-01-01DOI: 10.4313/JKEM.2020.33.3.208
Cho Myung Yeon, Kimiksoo, Dong-won Lee, Koo, Sang-Mo, O. Jong-Min
{"title":"Effect of Starting Powder on the Growth of BaTiO3 Film Prepared by Aerosol Deposition Process","authors":"Cho Myung Yeon, Kimiksoo, Dong-won Lee, Koo, Sang-Mo, O. Jong-Min","doi":"10.4313/JKEM.2020.33.3.208","DOIUrl":"https://doi.org/10.4313/JKEM.2020.33.3.208","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72882255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.4313/JKEM.2020.33.4.263
J. Chae
{"title":"Diffusion Model of Aluminium for the Formation of a Deep Junction in Silicon","authors":"J. Chae","doi":"10.4313/JKEM.2020.33.4.263","DOIUrl":"https://doi.org/10.4313/JKEM.2020.33.4.263","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76335596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.4313/JKEM.2020.33.6.490
H. Shin, K. N. Hoon, Kim, Sung Wook, G. Kil
{"title":"Comparative Analysis of PD Characteristics Under SF 6 , g 3 and Dry Air Insulation","authors":"H. Shin, K. N. Hoon, Kim, Sung Wook, G. Kil","doi":"10.4313/JKEM.2020.33.6.490","DOIUrl":"https://doi.org/10.4313/JKEM.2020.33.6.490","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87800410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.4313/JKEM.2020.33.1.70
lee hyeok jae, Song Hyeonje
In this study, the sterilization property of E. coli was established using a plasma generator with a flexible electrode structure. The bacterial suspension was prepared based on the McFarland standard 0.50 (1.5×10 CFU/mL) concentration and a specific amount was inoculated on the plate medium. After the plasma was discharged 3 cm away from the plasma generator in the range of 30s to 5 min and the results compared to the control group, the observed colonies that were formed decreased significantly as the plasma discharge time increased.
{"title":"A Study on the Effect of Microbial Sterilization Using Plasma Generator with a Flexible Electrodes Structure","authors":"lee hyeok jae, Song Hyeonje","doi":"10.4313/JKEM.2020.33.1.70","DOIUrl":"https://doi.org/10.4313/JKEM.2020.33.1.70","url":null,"abstract":"In this study, the sterilization property of E. coli was established using a plasma generator with a flexible electrode structure. The bacterial suspension was prepared based on the McFarland standard 0.50 (1.5×10 CFU/mL) concentration and a specific amount was inoculated on the plate medium. After the plasma was discharged 3 cm away from the plasma generator in the range of 30s to 5 min and the results compared to the control group, the observed colonies that were formed decreased significantly as the plasma discharge time increased.","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84412076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.4313/JKEM.2020.33.5.337
Gwang-Hwi Jeong, Sang-Seop Lee, C. Ahn, Hyoung‒Su Han, Jae‐Shin Lee
{"title":"Low Temperature Sintering of BNKT Lead-Free Piezoelectric Ceramics Using CuO-Coated Na 0.5 Bi 4.5 Ti 4 O 15 Templates","authors":"Gwang-Hwi Jeong, Sang-Seop Lee, C. Ahn, Hyoung‒Su Han, Jae‐Shin Lee","doi":"10.4313/JKEM.2020.33.5.337","DOIUrl":"https://doi.org/10.4313/JKEM.2020.33.5.337","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82723747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.4313/JKEM.2020.33.1.78
K. Cho, J. Mun, Woojin Chang, Hyun-Wook Jung
In this study, MOSFETs fabricated on Si-doped, MBE-grown β-Ga2O3 are demonstrated. A Si-doped Ga2O3 epitaxial layer was grown on a Fe-doped, semi-insulating 1.5 cm × 1 cm Ga2O3 substrate using molecular beam epitaxy (MBE). The fabricated devices are circular type MOSFETs with a gate length of 3 μm, a source-drain spacing of 20 μm, and a gate width of 523 μm. The device exhibited a good pinch-off characteristic, a high on-off drain current ratio of approximately 2.7×10, and a high breakdown voltage of 1,080 V, which demonstrates the potential of Ga2O3 for power device applications including electric vehicles, railways, and renewable energy.
在这项研究中，证明了在掺硅、mbe生长的β-Ga2O3上制备的mosfet。采用分子束外延(MBE)技术，在掺铁、半绝缘的1.5 cm × 1 cm Ga2O3衬底上生长出掺硅的Ga2O3外延层。所制器件为栅极长度为3 μm、源漏间距为20 μm、栅极宽度为523 μm的圆形mosfet。该器件具有良好的掐断特性、约2.7×10的高通断漏流比和1080 V的高击穿电压，证明了Ga2O3在电力器件中的应用潜力，包括电动汽车、铁路和可再生能源。
{"title":"Characteristics of Circular β-Ga 2 O 3 MOSFETs with High Breakdown Voltage (>1,000 V)","authors":"K. Cho, J. Mun, Woojin Chang, Hyun-Wook Jung","doi":"10.4313/JKEM.2020.33.1.78","DOIUrl":"https://doi.org/10.4313/JKEM.2020.33.1.78","url":null,"abstract":"In this study, MOSFETs fabricated on Si-doped, MBE-grown β-Ga2O3 are demonstrated. A Si-doped Ga2O3 epitaxial layer was grown on a Fe-doped, semi-insulating 1.5 cm × 1 cm Ga2O3 substrate using molecular beam epitaxy (MBE). The fabricated devices are circular type MOSFETs with a gate length of 3 μm, a source-drain spacing of 20 μm, and a gate width of 523 μm. The device exhibited a good pinch-off characteristic, a high on-off drain current ratio of approximately 2.7×10, and a high breakdown voltage of 1,080 V, which demonstrates the potential of Ga2O3 for power device applications including electric vehicles, railways, and renewable energy.","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76378026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.4313/JKEM.2020.33.1.31
H. An, Young-Cho Kim
An investigation was conducted to determine whether the ratio of the fluid to the charged particles affects the panel reflexibility rate and the drifting current flowing in the panel, in electrophoretic-based electronic paper. In this regard, three panels were produced in this study with the ratio of the charged particles to the fluid set as 1:5, 1:1, and 5:1. Each sample was driven using an identical input pulse, for which the current flowing in the panel and the output voltage of the photodiode were measured for the panel reflexibility rate. Consequently, the drifting current initially exhibited a peak value and a saturated value at a later point. This value was proportional to the ratio of the charged particles, and it was similar to this ratio when it is higher than 1:1. The output voltage of the photodiode due to the panel reflexibility rate was proportional to the ratio of the charged particles. However, the response speed decreased if the ratio was higher than 1:1. It is expected that the results of this study will contribute to the analysis of the charging of charged particles in electrophoretic-based electronic paper, and the selection of an appropriate concentration.
{"title":"Current Properties and Evaluation of Electronic Ink in Electrophoretic Display","authors":"H. An, Young-Cho Kim","doi":"10.4313/JKEM.2020.33.1.31","DOIUrl":"https://doi.org/10.4313/JKEM.2020.33.1.31","url":null,"abstract":"An investigation was conducted to determine whether the ratio of the fluid to the charged particles affects the panel reflexibility rate and the drifting current flowing in the panel, in electrophoretic-based electronic paper. In this regard, three panels were produced in this study with the ratio of the charged particles to the fluid set as 1:5, 1:1, and 5:1. Each sample was driven using an identical input pulse, for which the current flowing in the panel and the output voltage of the photodiode were measured for the panel reflexibility rate. Consequently, the drifting current initially exhibited a peak value and a saturated value at a later point. This value was proportional to the ratio of the charged particles, and it was similar to this ratio when it is higher than 1:1. The output voltage of the photodiode due to the panel reflexibility rate was proportional to the ratio of the charged particles. However, the response speed decreased if the ratio was higher than 1:1. It is expected that the results of this study will contribute to the analysis of the charging of charged particles in electrophoretic-based electronic paper, and the selection of an appropriate concentration.","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76899628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.4313/JKEM.2020.33.4.331
Sung Jin Park, Y. Kim, Injae Park, Jin Young Kim, C. Lim
In this study, through the accumulated technologies such as real-time monitoring of power consumption using power line communication (PLC) method, power control, and automatic blocking of standby power, to commercialize them, we developed the hardware design, algorithm, protocol and module along with data transmission using PLC. We conducted the study to develop advanced products. We also proposed cloud-based smart outlet products with a novel type of outlet. These products can measure the internal power consumption through the H/W modules and the modules that control the power of household appliances connected to the smart outlets and smart plugs. Subsequently, they transmit the measurements to the energy saving system server via a communication module. This system can control the terminal device connected to the Gateway (G/W) server through a mobile phone. This will allow the customer to check the power consumption of the building at any given time, to turn the terminal on/off, and to maximize the energy efficiency during the construction of new apartments or multi-family housing in an area.
{"title":"A Study on the Smart Outlet and Gateway Using Power Line Communication","authors":"Sung Jin Park, Y. Kim, Injae Park, Jin Young Kim, C. Lim","doi":"10.4313/JKEM.2020.33.4.331","DOIUrl":"https://doi.org/10.4313/JKEM.2020.33.4.331","url":null,"abstract":"In this study, through the accumulated technologies such as real-time monitoring of power consumption using power line communication (PLC) method, power control, and automatic blocking of standby power, to commercialize them, we developed the hardware design, algorithm, protocol and module along with data transmission using PLC. We conducted the study to develop advanced products. We also proposed cloud-based smart outlet products with a novel type of outlet. These products can measure the internal power consumption through the H/W modules and the modules that control the power of household appliances connected to the smart outlets and smart plugs. Subsequently, they transmit the measurements to the energy saving system server via a communication module. This system can control the terminal device connected to the Gateway (G/W) server through a mobile phone. This will allow the customer to check the power consumption of the building at any given time, to turn the terminal on/off, and to maximize the energy efficiency during the construction of new apartments or multi-family housing in an area.","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81818834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.4313/JKEM.2020.33.1.37
이상훈, Seong H. Kim, Farrukh Erkinov, H. Nguyen, T. Duong, Hyoung‒Su Han, Lee Jae Shin
This study investigated the microstructure and piezoelectric properties of lead-free 0.74(Bi1/2Na1/2)TiO3-0.26SrTiO3 (BNST26) piezoelectric ceramics sintered using a microwave furnace. For comparison, specimens were also prepared using a conventional furnace sintering (CFS). Average grain sizes of 2.4 μm and 3.2 μm were obtained in the sample sintered at 1,100°C for 5 min using microwave sintering (MWS) and at 1,175°C for 2 h using CFS, respectively. To quantify the changes in the microstructures and electrical properties according to the sintering conditions, the polarization hysteresis, bipolar and unipolar strain curves, and temperature dependence of permittivity were evaluated. As a result, it was determined that the Pmax (maximum polarization), Pr (remanent polarization) and Smax (maximum strain) values tend to increase with the average grain size. Based on these results, it is concluded that the MWS method can produce lead-free ceramics with superior performance in a relatively short time compared to the conventional CFS method.
{"title":"Dielectric and Piezoelectric Properties of Microwave Sintered BNT-ST Ceramics","authors":"이상훈, Seong H. Kim, Farrukh Erkinov, H. Nguyen, T. Duong, Hyoung‒Su Han, Lee Jae Shin","doi":"10.4313/JKEM.2020.33.1.37","DOIUrl":"https://doi.org/10.4313/JKEM.2020.33.1.37","url":null,"abstract":"This study investigated the microstructure and piezoelectric properties of lead-free 0.74(Bi1/2Na1/2)TiO3-0.26SrTiO3 (BNST26) piezoelectric ceramics sintered using a microwave furnace. For comparison, specimens were also prepared using a conventional furnace sintering (CFS). Average grain sizes of 2.4 μm and 3.2 μm were obtained in the sample sintered at 1,100°C for 5 min using microwave sintering (MWS) and at 1,175°C for 2 h using CFS, respectively. To quantify the changes in the microstructures and electrical properties according to the sintering conditions, the polarization hysteresis, bipolar and unipolar strain curves, and temperature dependence of permittivity were evaluated. As a result, it was determined that the Pmax (maximum polarization), Pr (remanent polarization) and Smax (maximum strain) values tend to increase with the average grain size. Based on these results, it is concluded that the MWS method can produce lead-free ceramics with superior performance in a relatively short time compared to the conventional CFS method.","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81131071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.4313/JKEM.2020.33.6.460
Hye Ryeon Yoon, Yoon Ee Jo, Hoi Jin Yoon, Lee Seungyun
{"title":"Study on Formation of Semitransparent Cu Nanoparticle Layers for Realizing Metal Nanoparticle-Dielectric Bilayer Structures","authors":"Hye Ryeon Yoon, Yoon Ee Jo, Hoi Jin Yoon, Lee Seungyun","doi":"10.4313/JKEM.2020.33.6.460","DOIUrl":"https://doi.org/10.4313/JKEM.2020.33.6.460","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87213761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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