연구성과로 돌아가기
2024 연구성과 (266 / 286)
※ 컨트롤 + 클릭으로 열별 다중 정렬 가능합니다.
Excel 다운로드
| WoS | SCOPUS | Document Type | Document Title | Abstract | Authors | Affiliation | ResearcherID (WoS) | AuthorsID (SCOPUS) | Author Email(s) | Journal Name | JCR Abbreviation | ISSN | eISSN | Volume | Issue | WoS Edition | WoS Category | JCR Year | IF | JCR (%) | FWCI | FWCI Update Date | WoS Citation | SCOPUS Citation | Keywords (WoS) | KeywordsPlus (WoS) | Keywords (SCOPUS) | KeywordsPlus (SCOPUS) | Language | Publication Stage | Publication Year | Publication Date | DOI | JCR Link | DOI Link | WOS Link | SCOPUS Link |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ○ | Book chapter | Hybrid Nanofluid Flow and Thermal Transport Analysis in a Linearly Heated Cylindrical Annulus | The current numerical investigation aims to study buoyancy-driven convection of hybrid nanofluids in an annular enclosure formed by two vertical concentric cylinders. In this analysis, hybrid nanofluid containing water and Ag-MgO nanoparticles has been taken as the working medium in the annular domain. The outer wall of the annulus is maintained at lower temperature and adiabatic condition at the horizontal walls of the annulus has been considered. However, along the inner wall, two different thermal conditions are imposed. For Case-I, a linear temperature profile has been considered, and for Case-II, a uniform temperature has been considered. For both the linear and uniform heating, the impact of Rayleigh number, nanoparticle concentration, and different proportions of nanoparticles on fluid flow and thermal transport characteristics in the vertical annulus has been addressed. The numerical simulations are performed for a vast range of parameters to examine fluid flow and thermal transport characteristics in the annular enclosure. The results are represented graphically through flow and thermal contours, and local and average Nusselt numbers. It is noticed that the presence of nanoparticles greatly helps in enhancing the heat removal rate in the annulus. In addition, several numerical computations have been carried out to identify the optimum thermal boundary condition to achieve enhanced heat transport rate. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024. | Reddy, N. Keerthi; Harthikote, Nagaraj; Sankar, M.; Swamy, H. A. Kumara | Department of Mechanical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea; Department of Electrical Engineering, UTAS-Higher College of Technology, Muscat, Oman; Department of Information Technology, University of Technology and Applied Sciences, Ibri, Oman; Department of Mathematics, Kyungpook National University, Daegu, South Korea | 57218368327; 58927091700; 6701530391; 57223027638 | Trends in Mathematics | 2297-0215 | Part F2357 | 0 | 2025-05-07 | 0 | Annulus; Hybrid nanofluids; Linear heating; Natural convection; Uniform heating | English | Final | 2024 | 10.1007/978-3-031-41420-6_28 | 바로가기 | 바로가기 | ||||||||||||||||||
| ○ | ○ | Proceedings Paper | H∞ filter design for discrete-time LPV systems | A new design condition for H-infinity filter of discrete-time linear parameter-varying systems is addressed in this paper. The proposed method uses parameter-dependent Lyapunov functions and Finsler's Lemma to derive the filter design conditions in terms of linear matrix inequalities. The presented design method has an advantage that it is possible to obtain less conservative results compared to existing methods in the view of H-infinity performance and stability. The effectiveness and performance of the proposed filter design method are illustrated by numerical examples. | Kang, Dongyeop; Park, Chaneun | Elect & Telecommun Res Inst, Daegu 42994, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea | 24830558800; 57001658700 | kang@etri.re.kr;chaneun@knu.ac.kr; | 2024 AMERICAN CONTROL CONFERENCE, ACC 2024 | 0743-1619 | 2378-5861 | 0 | 2025-05-07 | 0 | 0 | LINEAR-SYSTEMS; PARAMETER; H-2; UNCERTAINTIES | Bandpass filters; Discrete time control systems; Integrated circuit design; Linear matrix inequalities; Lyapunov functions; Time varying systems; Design condition; Design method; Discrete time; Filter designs; H ∞ performance; H∞ filters; Linear matrix in equalities; Linear parameter varying systems; LPV systems; Parameter dependents; Wiener filtering | English | 2024 | 2024 | 바로가기 | 바로가기 | 바로가기 | ||||||||||||||
| ○ | Article | Identification and Quantification of Phenolic Compounds by HPLC-DAD and Bioactivity Assay of Acacia nilotica | Acacia nilotica, a versatile plant with diverse medicinal properties, has gained significant attention in recent years. This study focuses on the identification and quantification of phenolic compounds in various parts of A. nilotica, including leaves, stem, and roots, using a high-performance liquid chromatography with a diode-array detector (HPLC-DAD) method. The investigation reveals the presence of 10 bound phenolic compounds in different parts of A. nilotica, employing the base hydrolysis method, while seven free phenolic compounds are quantified using an ultrasonic-assisted extraction technique, i.e. sonication. Furthermore, the study explores the bioactivity of these phenolic compounds through DPPH radical scavenging assays, showcasing their antioxidant potential, with values ranging from 41.31 to 150.49 mu mol/100g quercetin equivalents. Notably, the stem exhibits higher concentrations of absolute flavonoids (42.77 mg/g) and total tannins (33.61 mg/g) compared to other plant parts. Additionally, the antimicrobial properties of A. nilotica extracts are evaluated against two distinct microorganisms, Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative). The results demonstrate significant antimicrobial activity against both types of bacteria. Among the plant's components, the leaf extract exhibits the highest antimicrobial activity, with an inhibition zone of 2 mm at a concentration of 10 mu g/mL. The selected samples are good sources of phenolic compounds as well as bioactive compounds with promising antioxidant and antimicrobial properties. These findings contribute to a deeper understanding of the therapeutic potential of A. nilotica and may pave the way for its utilization in various pharmaceutical and healthcare applications. | Ahmed, Nawaz; Kandhro, Aftab Ahmed; Chaudhry, Abdul Waheed; Shaikh, Abdul Rauf; Uddin Qureshi, Arslan; Hayat, Asma; Basit, Abdul; Memon, Hina Daud; Sidhu, Ahmed Raza; Zahid, Sehar | Univ Sindh, Dr MA Kazi Inst Chem, Jamshoro 76080, Pakistan; Shah Abdul Latif Univ Khairpur Mirs, Inst Chem, Sindh, Pakistan; Kyungpook Natl Univ, Dept Hort Sci, Daegu 41566, South Korea; Univ Sindh, Natl Ctr Excellence Analyt Chem, Jamshoro 76080, Pakistan | Kandhro, Aftab/AAM-3573-2021; Basit, Abdul/AAX-2414-2021 | abdulbasithort97@gmail.com; | APPLIED FRUIT SCIENCE | APPL FRUIT SCI | 2948-2623 | 2948-2631 | 66 | 1 | SCIE | HORTICULTURE | 2024 | N/A | 2 | Acacia nilotica; Antimicrobial activity; Flavonoids; Bioactive Compounds; Escherichia coli | L. | English | 2024 | 2024-02 | 10.1007/s10341-023-00985-7 | 바로가기 | 바로가기 | 바로가기 | ||||||||||
| ○ | Article | Identification of Snowdrop Virus Y Occurred on Narcissus spp. in Korea; [국내 수선화에서 발생한 Snowdrop Virus Y의 동정] | Metatranscriptome analysis and reverse transcription polymerase chain reaction diagnostics were conducted to investigate viral disease in 75 Narcissus samples, resulting in the detection of snowdrop virus Y (SVY). The complete genome sequence of the SVY isolate SA66 was 10,560 nt in length, and sequence analysis revealed a typical genome structure for Potyvirus. Electron microscopy revealed filamentous rod particles approximately 800 nm long in the infected samples. In the bioassay involving 19 test plants, no SVY infection was confirmed. The coat protein sequences of 10 SVY isolates from various samples were determined, showing nucleotide identities of 99.3-99.8% and amino acid identities of 98.9-99.6% when compared with three previously reported isolates. The complete genome sequence shared 99.6% nucleotide identity and 99.7% amino acid identity with the reported isolate. SVY was detected in 10 of the collected samples, specifically showing partial detection in all four cultivars from the Sinan region, while it was not detected in the other three regions. This study is the first report of SVY in Korea and is expected to contribute to the quarantine of Narcissus bulbs and to the production of virus-free bulbs. © The Korean Society of Plant Pathology. | Kim, Minseok; Kim, Minhui; Bak, Sangmin; Kim, Hak Ju; Lee, Hong-Kyu; Min, Jean Geung; Lim, Taegun; Baek, Seungbin; Yang, Minjoo; Min, Dong-Joo; Hong, Jin-Sung; Byun, Hee-Seong; Nam, Kyunghwa; Lee, Su-Heon | School ofApplied Biosciences, Kyungpook National University, Daegu, 41566, South Korea; School ofApplied Biosciences, Kyungpook National University, Daegu, 41566, South Korea; School ofApplied Biosciences, Kyungpook National University, Daegu, 41566, South Korea; School ofApplied Biosciences, Kyungpook National University, Daegu, 41566, South Korea; School ofApplied Biosciences, Kyungpook National University, Daegu, 41566, South Korea; Department ofApplied Biology, Kyungpook National University, Daegu, 41566, South Korea; Department ofApplied Biology, Kyungpook National University, Daegu, 41566, South Korea; Department ofApplied Biology, Kyungpook National University, Daegu, 41566, South Korea; Department ofApplied Biology, Kyungpook National University, Daegu, 41566, South Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, South Korea; Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon, 24341, South Korea; Crop Protection Division, National Institute ofAgricultural Sciences, Wanju, 55365, South Korea; Department ofPlant Medicine, Kyungpook National University, Daegu, 41566, South Korea; Department ofPlant Medicine, Kyungpook National University, Daegu, 41566, South Korea, Institute ofPlant Medicine, Kyungpook National University, Daegu, 41566, South Korea | 59073001500; 58020421100; 57209009707; 58672580100; 57193319906; 58660497100; 58671938100; 58660149600; 58672892400; 57215660174; 7404118872; 56191040100; 58088093700; 57213176188 | suheon@knu.ac.kr; | Research in Plant Disease | 1598-2262 | 30 | 4 | 0 | 2025-05-07 | 0 | First report; Narcissus; Sequence analysis; Snowdrop virus Y | Korean | Final | 2024 | 10.5423/rpd.2024.30.4.409 | 바로가기 | 바로가기 | ||||||||||||||||
| ○ | Conference paper | Image Translation of Vehicle Front Camera Frame Failures Based on CycleGAN | More and more kinds of sensors are used including cameras in the vehicle to proactively address safety issues, either directly or indirectly. Camera failures, such as abnormal frames caused by muzzy, obstruction, and flutter, can lead to system exceptions and even traffic accidents because of their important role in the vehicle's system. We hope to reduce those exception faults by recovering abnormal frames. Therefore, in this paper, we first collect the video from the front-facing camera and define the abnormal frames. Then, this dataset is learned by a cycle generative adversarial network (CycleGAN) to generate more abnormal frames because sufficient samples are needed for better training. Moreover, CycleGAN can also restore the abnormal frames to normal frames, which reduces the system faults. This method can mitigate the consequence of camera failures and also works as a generator of corresponding failure frames. © 2024 IEEE. | Ning, Dian; Han, Dong Seog | School of Electronic and Electrical Engineering, Kyungpook National University, Daegu, South Korea; School of Electronic and Electrical Engineering, Kyungpook National University, Daegu, South Korea | 58175410800; 7403219442 | 6th International Conference on Artificial Intelligence in Information and Communication, ICAIIC 2024 | 0 | 2025-04-16 | 0 | Camera Faulty; Fault Detection; GAN; Vehicle Inpainting | Accidents; Fault detection; Generative adversarial networks; Vehicles; Camera faulty; Camera frames; Faults detection; GAN; Image translation; Inpainting; Safety issues; System faults; Vehicle inpainting; Vehicle system; Cameras | English | Final | 2024 | 10.1109/icaiic60209.2024.10463405 | 바로가기 | 바로가기 | |||||||||||||||||||
| ○ | ○ | Article | Impact of propiconazole fungicide on soil microbiome (bacterial and fungal) diversity, functional profile, and associated dehydrogenase activity | Pesticides, protect crops but can harm the environment and human health when used without caution. This study evaluated the impact of propiconazole, a fungicide that acts on fungal cell membranes, on soil microbiome abundance, diversity, and functional profile, as well as soil dehydrogenase activity (DHA). The study conducted microcosm experiments using soil samples treated with propiconazole and employed next-generation sequencing (MiSeq) and chromatographic approaches (GC-MS/MS) to analyze the shift in microbial communities and propiconazole level, respectively. The results showed that propiconazole significantly altered the distribution of microbial communities, with notable changes in the abundance of various bacterial and fungal taxa. Among soil bacterial communities, the relative abundance of Proteobacteria and Planctomycetota increased, while that of Acidobacteria decreased after propiconazole treatment. In the fungal communities, propiconazole increased the abundance of Ascomycota and Basidiomycota in the treated soil, while that of Mortierellomycota was reduced. Fungicide application further triggered a significant decrease in DHA over time. Analysis of the functional profile of bacterial communities showed that propiconazole significantly affected bacterial cellular and metabolic pathways. The carbon degradation pathway was upregulated, indicating the microbial detoxification of the contaminant in the treated soil. Our findings suggest that propiconazole application has a discernible impact on soil microbial communities, which could have long-term consequences for soil health, quality, and function. | Sliti, Amani; Singh, Vineet; Ibal, Jerald Conrad; Jeong, Minsoo; Shin, Jae-Ho | Kyungpook Natl Univ, Dept Appl Biosci, Daegu 41566, South Korea; Idaho State Univ, Dept Biol Sci, Pocatello, ID 83209 USA; Kyungpook Natl Univ, NGS Core Facil, Daegu 41566, South Korea; Kyungpook Natl Univ, Dept Integrat Biotechnol, Daegu 41566, South Korea | ; Ibal, Jerald/JYQ-0493-2024; Singh, Vineet/ABC-7000-2021 | 58551490600; 57211642447; 57196117664; 57292954900; 57224125922 | jhshin@knu.ac.kr; | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 0944-1344 | 1614-7499 | 31 | 5 | 1.98 | 2025-04-16 | 5 | 6 | Pesticides; Environment; Propiconazole; Bacterial community; Fungal community; DHA | BIODEGRADATION; PESTICIDES; AZOXYSTROBIN; QUALITY | Bacterial community; DHA; Environment; Fungal community; Pesticides; Propiconazole | Bacteria; Fungicides, Industrial; Humans; Microbiota; Oxidoreductases; Soil; Soil Microbiology; Tandem Mass Spectrometry; Triazoles; Bacteria; Crop protection; Cytology; Detoxification; Fungi; Soils; fungicide; oxidoreductase; propiconazole; triazole derivative; Bacterial community; Bacterial diversity; Dehydrogenase activity; Environment; Fungal community; Fungal diversity; Microbial communities; Microbiome; Propiconazole; Treated soils; bacterium; environmental conditions; enzyme activity; fungicide; fungus; microbial community; relative abundance; soil degradation; soil microorganism; species diversity; bacterium; chemistry; human; metabolism; microbiology; microflora; soil; tandem mass spectrometry; Fungicides | English | 2024 | 2024-01 | 10.1007/s11356-023-31643-w | 바로가기 | 바로가기 | 바로가기 | ||||||||
| ○ | Book chapter | Impaction Bone Grafting | Osteonecrosis of the femoral head (ONFH) is a disease that commonly affects young adults progressing to collapse and osteoarthritis. Joint-preserving procedures are preferred treatments to prevent the progression to collapse and subsequent osteoarthritis [1]. Since core decompression was first described by Ficat and Arlet [2], several head-preserving procedures combined with core decompression including vascularized [3, 4] or nonvascularized bone graft [5, 6] from the fibula, iliac crest, or tibia have been performed to provide mechanical support and biological augmentation aiding bone healing [7, 8]. Most of these procedures, however, demonstrated limited successful outcomes for treating ONFH in early stage [6, 9, 10]. Some of them are technically demanding with extensive surgical time and showed donor site morbidity [11]. The residual graft can prevent optimal positioning and canal fit of the stem in later possible total hip arthroplasty (THA) after failed nonvascularized or vascularized fibular or tibial grafting [12, 13]. On the contrary, bone impaction grafting is relatively simple and does not take extensive surgical time. It does not produce donor site morbidity and does not disturb the procedure in future THA [14]. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024. | Baek, Seung-Hoon; Shim, Bum-Jin; Kim, Shin-Yoon | Department of Orthopedic Surgery, School of Medicine, Kyungpook National University, Daegu, South Korea, Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea; Department of Orthopedic Surgery, School of Medicine, Kyungpook National University, Daegu, South Korea; Department of Orthopedic Surgery, School of Medicine, Kyungpook National University, Daegu, South Korea, Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea | 56232924900; 57201499293; 26663842900 | syukim@knu.ac.kr; | Osteonecrosis, Second Edition | 0 | 2025-05-07 | 0 | Allograft; Autograft; Calcium phosphate cement; Core decompression; Femoral head; Impaction bone graft; Osteonecrosis; Skeletal stem cell | English | Final | 2024 | 10.1007/978-981-97-5239-3_44 | 바로가기 | 바로가기 | |||||||||||||||||||
| ○ | Article | Imperatorin reduces thrombus formation by inhibiting platelet function and phosphoproteins | Platelets, disc shaped fragments of megakaryocytes, are involved in blood coagulation and aggregation, however, platelet can cause unexpected blood clots simultaneously. Therefore, to prevent circulatory disorders by platelets, proper platelet regulation is essential. We checked antiplatelet effects of imperatorin on platelet aggregation, calcium release and integrin αIIb/β3 activation. We observed that imperatorin inhibited platelet aggregation, calcium release and glycoprotein IIb/IIIa (αIIb/β3) activation and regulated its signaling molecules. Imperatorin elevated the phosphorylation of Akt, glycogen synthase kinase-3α/ β (GSK-3α/β), spleen tyrosine kinase, and phospholipase Cγ2 and vasodilator stimulated phosphoprotein. In addition, imperatorin effectively delayed thrombin-induced clot contraction time. To summarize the results, imperatorin shows strong antiplatelet effects and delayed thrombin-induced clot retraction. These results lead us to expect that imperatorin may be helpful in treating cardiovascular disease. © The Korean Society for Applied Biological Chemistry 2024. | Shin, Jung-Hae | Department of Veterinary Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu, 41566, South Korea, Cardiovascular Research Institute, School of Medicine, Kyungpook National University, Daegu, 41944, South Korea | 56244056800 | mlsjshin@naver.com; | Journal of Applied Biological Chemistry | 1976-0442 | 67 | 1 | 0 | 2025-05-07 | 0 | Imperatorin; Phosphoproteins; Platelet aggregation; Thrombosis | English | Final | 2024 | 10.3839/jabc.2024.047 | 바로가기 | 바로가기 | ||||||||||||||||
| ○ | Conference paper | Implementation of a Transfer Learning and Fingerprint-Based Positioning System | The extensive deployment of 5G, has fueled the demand for location-based services. However, indoor positioning remains a persistent challenge, prompting extensive research efforts to address these issues. The advent of artificial intelligence (AI) technology has opened up new possibilities for positioning in the mobile communications domain. This paper proposes a transfer learning and fingerprint-based positioning system that leverages 5G signal strength information. Our proposition demonstrates the ability to rapidly adapt to environmental factors in real-world scenarios, significantly enhancing device positioning accuracy. To validate our proposed approach, we constructed a real network environment using commercial base stations, a commercial core, and commercial smartphones, and deployed the proposed transfer learning model in this real environment. Experimental results in real-world environments validate the effectiveness of our approach, achieving an average location estimation accuracy of over 90 %. © 2024 IEEE. | Kim, Nam-I; Kim, Tae-Jung; Moon, Yujin; Jung, Young Hoon; Na, Jee-Hyeon; Kim, Hungsub | Electronics and Telecommunications Research Institute, Intelligent Small Cell Research Section, Daejeon, South Korea; Electronics and Telecommunications Research Institute, Intelligent Small Cell Research Section, Daejeon, South Korea; Ewha Womans University, Electronic and Electrical Engineering, Seoul, South Korea; Kyungpook National University, School of Electronics Engineering, Daegu, South Korea; Electronics and Telecommunications Research Institute, Intelligent Small Cell Research Section, Daejeon, South Korea; Electronics and Telecommunications Research Institute, Intelligent Small Cell Research Section, Daejeon, South Korea | 57220797155; 55696498300; 59486135900; 59486839700; 7103258602; 59486839800 | namikim@etri.re.kr; | IEEE Vehicular Technology Conference | 1550-2252 | 0 | 2025-05-07 | 0 | 5G; AI; fingerprint; positioning; transfer learning | 5G mobile communication systems; Contrastive Learning; Federated learning; Transfer learning; 5g; Artificial intelligence technologies; Fingerprint; Indoor positioning; Location-based services; Mobile communications; Positioning; Positioning system; Research efforts; Transfer learning; Adversarial machine learning | English | Final | 2024 | 10.1109/vtc2024-fall63153.2024.10757671 | 바로가기 | 바로가기 | |||||||||||||||||
| ○ | ○ | Proceedings Paper | Implementation of Dynamic Round Robin Scheduling on Bare-Metal Shallow Multi-OS for Lightweighted Microcontrollers | In recent years, there has been a trend towards integrating functions using a small number of microcontrollers instead of employing multiple microcontrollers across various environments. This shift underscores the need for a hypervisor capable of efficiently utilizing resources while imposing minimal overhead. Addressing this demand, this paper introduces a hypervisor employing dynamic round-robin scheduling, which flexibly adjusts time quantum allocation based on the urgency of each OS. Furthermore, a monitor mode is devised to oversee resource allocation among multiple OS. To enhance responsiveness while managing these OS, ultra-light context-switching is implemented within the monitor mode. The proposed system demonstrates a notable reduction in execution time, approximately 19% compared to traditional round-robin scheduling. Additionally, in terms of energy efficiency, the proposed system yields a 34% reduction in energy consumption compared to existing methods. Notably, the ultra-light context-switching mechanism consumes only about 5% of the processing cycle when compared to FreeRTOS. | Kim, Minjung; Park, Daejin | Kyungpook Natl Univ, Sch Elect Engn, Daegu, South Korea | 58897306800; 55463943600 | boltanut@knu.ac.kr; | 2024 IEEE 48TH ANNUAL COMPUTERS, SOFTWARE, AND APPLICATIONS CONFERENCE, COMPSAC 2024 | 2836-3787 | 0 | 2025-05-07 | 0 | 0 | Embedded system; scheduling; round robin; memory division; multi-OS | Embedded system; memory division; multi-OS; round robin; scheduling | Laser beams; Microcontrollers; Problem solving; Resource allocation; Bare metals; Context switching; Dynamic round robin; Embedded-system; Hypervisors; Memory division; Multi-OS; Round Robin; Round-robin scheduling; Ultra-light; Energy utilization | English | 2024 | 2024 | 10.1109/compsac61105.2024.00236 | 바로가기 | 바로가기 | 바로가기 | |||||||||||||
| ○ | Article | Improve H2S Gas Sensing Characteristics through SnO2 Microparticle Surface Modification and Ti Nanoparticle Decoration using Tip Sonication | In this study, the H2S gas sensing characteristics were evaluated using surface-modified SnO2 microparticles by tip sonication. The surface-modified SnO2 microparticles were synthesized using the following sequential process. First, bare SnO2 microparticles were synthesized via a hydrothermal method. Then, the surfaces of bare SnO2 microparticles were modified with Ti nanoparticles during tip sonication. The sensing characteristics of SnO2 microparticles modified with Ti were systematically investigated in the range of 100–300oC, compared with the bare SnO2 microparticles. In this study, we discuss in detail the improved H2S sensing characteristics of SnO2 microparticles via Ti nanoparticle modification. © 2024, Korean Sensors Society. All rights reserved. | Shin, Ji Yeon; Kim, Chan Gyu; Park, Ji Myeong; Le, Hong Nhung; Hwang, Jeong Yun; Choi, Myung Sik | School of Advanced Science and Technology Convergence, Kyungpook National University, 2559, Gyeongsang-daero, Gyeongsangbuk-do, Sangju-si, 37224, South Korea; Department of Nano & Advanced Materials Science and Engineering, Kyungpook National University, 2559, Gyeongsang-daero, Gyeongsangbuk-do, Sangju-si, 37224, South Korea; Department of Nano & Advanced Materials Science and Engineering, Kyungpook National University, 2559, Gyeongsang-daero, Gyeongsangbuk-do, Sangju-si, 37224, South Korea; Department of Materials Science and Engineering, Kangwon National University, 346, Jungang-ro, Gangwon-do, Samcheok-si, 25913, South Korea; Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro Seodaemun-gu, Seoul, 03722, South Korea; School of Advanced Science and Technology Convergence, Kyungpook National University, 2559, Gyeongsang-daero, Gyeongsangbuk-do, Sangju-si, 37224, South Korea, Department of Nano & Advanced Materials Science and Engineering, Kyungpook National University, 2559, Gyeongsang-daero, Gyeongsangbuk-do, Sangju-si, 37224, South Korea | 57994575600; 59125659400; 59125311500; 58454383600; 57215200308; 57190737942 | jyhawng@yonsei.ac.kr;ms.choi@knu.ac.kr; | Journal of Sensor Science and Technology | 1225-5475 | 33 | 2 | 0 | 2025-05-07 | 0 | H<sub>2</sub>S; Microparticles; Sensor; SnO<sub>2</sub>; Ti | Korean | Final | 2024 | 10.46670/jsst.2024.33.2.105 | 바로가기 | 바로가기 | ||||||||||||||||
| ○ | ○ | Proceedings Paper | Improve Performance of Dual-output Configuration IPOS Structure | In renewable applications and DC grids, the bipolar or dual-output loads configuration is preferred due to flexibility, safety, and reliability. Hence, the conventional dual-output input-parallel output-series (IPOS) structure, which has high voltage gain, low switch voltage stress, low input current ripple, and natural output voltage balancing characteristics, is a good candidate. However, the topology still has some minor drawbacks, such as the PWM scheme needing to change when the duty ratio (D) is less than 0.5, leading to complexity in control, and the switch voltage and current waveforms varying through three levels, leading to potential EMI problems. This research introduces a modified IPOS structure, which can solve this problem, and all advantages remain. The switches (S-2 and D-2) current stresses reduce when D < 0.5, compared to those of the conventional converter. Furthermore, the capacitor voltage ripples are reduced. The modified converter is verified by simulation and experiments with a 1.6 kW prototype. | Van-Dai Bui; Vu Hoang Phuong; Chan Viet Nguyen; Thien-Dung Tran; Cha, Honnyong | Thuyloi Univ, Fac Elect & Elect Engn, 175 Tay Son, Hanoi, Vietnam; Hanoi Univ Sci & Technol, Sch Elect & Elect Engn, Hanoi, Vietnam; Ho Chi Minh City Univ Technol, Fac Elect & Elect Engn, Ho Chi Minh City, Vietnam; Kyungpook Natl Univ, Sch Energy Engn, Daegu, South Korea | Bui, Van-Dai/AAE-6202-2022; BUI, VAN-DAI/AAE-6202-2022 | 57221961296; 57577898000; 57210827612; 24450248400; 58572374600 | daibv@tlu.edu.vn;phuong.vuhoang@hust.edu.vn;ncviet@hcmut.edu.vn;tranthiendung@tnut.edu.vn;chahonny@knu.ac.kr; | 2024 IEEE TENTH INTERNATIONAL CONFERENCE ON COMMUNICATIONS AND ELECTRONICS, ICCE 2024 | 2836-4384 | 0 | 2025-05-07 | 0 | 0 | Bipolar DC grid; boost converter; DC-DC converter; dual outputs; IPOS structure; renewable energy; voltage balancing. | ASYMMETRICAL PWM SCHEME; DC-DC CONVERTER; DC/DC CONVERTER; INDUCTOR | Bipolar DC grid; boost converter; DC-DC converter; dual outputs; IPOS structure; renewable energy; voltage balancing | Bipolar DC grid; BOOST converter; DC converter; DC grid; Dual outputs; Input-parallel output-series structure; Output series; Parallel output; Renewable energies; Voltage balancing | English | 2024 | 2024 | 10.1109/icce62051.2024.10634658 | 바로가기 | 바로가기 | 바로가기 | |||||||||||
| ○ | ○ | Proceedings Paper | Improve Performance of High-gain Floating Double Series-capacitor Converter with Common Ground and Low-side Gate Driving | This paper proposes a method to modify a four-phase double series-capacitor (4P-FDSC) converter. The proposed converter not only inherits all merits of the original converter but also achieves common ground and low-side gate driving for all switches. Only one inductor (L-p) and one capacitor (C-o) are added, but the extra capacitor helps the output voltage is more stable. And two inductors can couple so that the magnetic volume does not increase. This technique includes several simple modification steps and can be applied to other structures. It is explained step-by-step on the 4P-FDSC converter. A 1.6-kW prototype of the proposed converter was built and tested to verify the performance of the suggested method. | Bui, Van-Dai; Phuong, Vu Hoang; Nguyen, Chan Viet; Cha, Honnyong; Tran, Thien-Dung | Thuyloi Univ, Fac Elect & Elect Engn, 175 Tay Son, Hanoi, Vietnam; Hanoi Univ Sci & Technol, Sch Elect & Elect Engn, Hanoi, Vietnam; Ho Chi Minh City Univ Technol, Fac Elect & Elect Engn, Ho Chi Minh City, Vietnam; Kyungpook Natl Univ, Sch Energy Engn, Daegu, South Korea | Bui, Van-Dai/AAE-6202-2022; BUI, VAN-DAI/AAE-6202-2022 | 57221961296; 57577898000; 57210827612; 24450248400; 58572374600 | daibv@tlu.edu.vn;phuong.vuhoang@hust.edu.vn;ncviet@hcmut.edu.vn;chahonny@knu.ac.kr;tranthiendung@tnut.edu.vn; | 2024 IEEE TENTH INTERNATIONAL CONFERENCE ON COMMUNICATIONS AND ELECTRONICS, ICCE 2024 | 2836-4384 | 0 | 2025-05-07 | 0 | 0 | Common ground; double-dual converter; high-gain boost converter; low-side gate driving; series-capacitor converter | ASYMMETRICAL PWM SCHEME; BOOST CONVERTER; INPUT-CURRENT | Common ground; double-dual converter; high-gain boost converter; low-side gate driving; series-capacitor converter | BOOST converter; Common ground; Double-dual converter; Dual converter; Gain boost; Gate driving; High gain; High-gain boost converter; Low-side gate driving; Series capacitors; Series-capacitor converter; Side gate; Capacitor bank | English | 2024 | 2024 | 10.1109/icce62051.2024.10634648 | 바로가기 | 바로가기 | 바로가기 | |||||||||||
| ○ | Conference paper | Improved thermal reliability in base contact of full 3-inch InP Double-HBTs with fT and fmax in excess of 300 GHz | In this paper, we have structurally and electrically examined the thermal degradation of platinum-based ohmic contacts for base layers of InP DHBTs. The results show that the degradation of the base contact is caused by the formation of an inhomogeneous Au-InGaAs alloy. It was also found that the contact resistance degradation could be effectively suppressed by inserting a molybdenum diffusion barrier. We demonstrate an InP DHBT on a 3-inch InP substrate via stepper-based photolithography with an improved base ohmic contact. The fabricated DHBTs (WE = 1.0 μm and LE = 15 μm) exhibit high current gain (β) = 57 at VCE = 1.0 V. Excellent fT of 331 GHz and fmax of 310 GHz are obtained at JC = 3.2 mA/μm2 and VCE = 1.4 V. © 2024 International Conference on Compound Semiconductor Manufacturing Technology. All Rights Reserved. | Lee, In-Geun; Jeon, Yong-Soo; Kim, Yonghyun; Yun, Jacob; Kim, Ted; Kwon, Hyuk-Min; Shin, Seung Heon; Lee, Jae-Hak; Yang, Kyunghoon; Kim, Dae-Hyun | School of Electronic and Electrical Engineering, Kyungpook National University, Daegu, 41566, South Korea; School of Electronic and Electrical Engineering, Kyungpook National University, Daegu, 41566, South Korea; QSI, Chungcheongnam-do, CheonAn, 31044, South Korea; QSI, Chungcheongnam-do, CheonAn, 31044, South Korea; QSI, Chungcheongnam-do, CheonAn, 31044, South Korea; Korea Polytechnics, Semiconductor Convergence Campus, Anseong-si, 17550, South Korea; Korea Polytechnics, Semiconductor Convergence Campus, Anseong-si, 17550, South Korea; School of Electronic and Electrical Engineering, Kyungpook National University, Daegu, 41566, South Korea; School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, South Korea; School of Electronic and Electrical Engineering, Kyungpook National University, Daegu, 41566, South Korea | 37016357200; 59001406600; 59002182900; 57221602607; 57221599265; 55549386600; 57217467919; 55690077600; 59970675700; 57212363794 | dae-hyun.kim@ee.knu.ac.kr; | CS MANTECH 2024 - 2024 International Conference on Compound Semiconductor Manufacturing Technology | 0 | Cut-off frequency (f<sub>T</sub>); Double heterojunction bipolar transistors (DHBTs); Indium phosphide (InP); maximum oscillation frequency (f<sub>max</sub>); Thermal stress | Diffusion barriers; Gallium alloys; Gold alloys; Heterojunction bipolar transistors; Heterojunctions; III-V semiconductors; Indium alloys; Indium phosphide; Ohmic contacts; Semiconducting indium; Semiconducting indium gallium arsenide; Semiconductor alloys; Semiconductor device manufacture; Thermal stress; Cut-off frequencies; Cut-off frequency (fT); Double heterojunction bipolar transistor; Double heterojunction bipolar transistors; Indium phosphide; Maximum oscillation frequency; Maximum oscillation frequency (fmax); Thermal; Thermal degradation'; Thermal reliability; Semiconducting indium phosphide | English | Final | 2024 | 바로가기 | ||||||||||||||||||||||
| ○ | ○ | Proceedings Paper | IMPROVEMENT IN CHEMIRESISTIVE RESPONSE OF SnO2 THIN FILM BY RuO2-NANOSHEETS-FUNCTIONALIZATION AND ITS APPLICATION TO HIGHLY SENSITIVE ETHANOL SENSOR | This paper introduces the use of ruthenium dioxide (RuO2) nanosheets as a catalyst in gas sensors, significantly enhancing the chemiresistive response of tin dioxide (SnO2) thin films for ethanol detection. The RuO2-functionalized device, integrated with a microheater for low-power operation, demonstrates a 243% improved response to 10 ppm ethanol compared to that of pristine SnO2. The sensor is operable at 250 degrees C with 18 mW power and fabricated with bulk-micromachining, thus these could be suitable for portable applications. Additionally, the sensor's performance at exposure to ethanol at various concentrations down to 500 ppb is characterized. | Park, Wonkeun; Kang, Yunsung; Jin, Xiaoyan; Lee, Dongseok; Hwang, Seong-Ju; Kim, Jongbaeg | Yonsei Univ, Sch Mech Engn, Seoul, South Korea; Kyungpook Natl Univ, Dept Precis Mech Engn, Sangju, South Korea; Yonsei Univ, Dept Mat Sci & Engn, Seoul, South Korea | 57223905879; 57193683552; 55972117300; 58919778900; 7404626171; 55881484100 | hwangsju@yonsei.ac.kr;kimjb@yonsei.ac.kr; | 2024 IEEE 37TH INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS, MEMS | 1084-6999 | 4.9 | 2025-04-16 | 0 | 1 | Ruthenium dioxide nanosheets; Suspended gas sensor platform; Chemireistive gas sensor; Ethanol gas detection | Chemireistive gas sensor; Ethanol gas detection; Ruthenium dioxide nanosheets; Suspended gas sensor platform | Chemical sensors; Gas detectors; MEMS; Nanosheets; Ruthenium compounds; Tin dioxide; Chemireistive gas sensor; Ethanol gas detection; Functionalizations; Gas detection; Gas-sensors; Ruthenium dioxide nanosheet; Sensor platform; Suspended gas sensor platform; Thin-films; Ethanol | English | 2024 | 2024 | 10.1109/mems58180.2024.10439557 | 바로가기 | 바로가기 | 바로가기 |
페이지 이동: