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Professor Kim Min-hoe of the Department of Creative Convergence Engineering Presents Design Criteria for Polymer Tunneling Layers for Organic Memory Devices

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- Demonstrating the potential to improve organic memory performance through polymer structure systematization□ Hanbat National University (President Oh Yong-jun) announced on the 25th that a co-authored research paper in which Professor Kim Min-hoe from the Department of Creative Convergence Engineering participated as a corresponding author was published online in 'Materials Horizons (Impact Factor 11.4) an internationally renowned academic journal published by the Royal Society of Chemistry in the United Kingdom.○ This study was conducted under the paper title of 'Molecule-in-Memory: A Multiscale Guideline for Polymeric Tunnelling xss-layers Linking Molecular Motifs to Electrical Outcomes' and Professor Kim Min-hoe and Professor Yuji Shibasaki a co-researcher from Iwate University in Japan participated as corresponding authors.□ The research team presented design criteria for a polymer tunneling xss-layer that plays a key role in electric field-based charge-storage organic non-volatile memory.○ Organic charge-trap memory is drawing attention as a promising technology for implementing next-generation flexible and low-power electronic devices. However, systematic design guidelines linking the molecular structure of the polymer tunneling xss-layer to actual device performance have been lacking until now.○ Especially, while previous studies have focused on optimizing individual physical properties -such as dielectric constant, charge mobility, trap density and leakage current, this study suggested that the electrical characteristics of the polymer tunneling xss-layer are determined not by a single physical property but by the interrelationships of multiple physical and chemical factors.○ Through this approach, the team analyzed the process by which molecular-level structural motifs lead to macroscopic device performance such as memory window, on/off current ratio and data retention characteristics from a multiscale perspective.□ The research team confirmed that key factors such as Fowler-Nordheim tunneling, dielectric constant, field-effect mobility, trap density, and leakage current can be balanced by applying P(DTDB-DB), a low-dielectric polymer with intrinsic microporous properties, as a tunneling xss-layer.○ The organic charge-trap memory with a P(DTDB-DB) tunneling xss-layer showed improved memory window, on/off current ratio, and data retention characteristics compared to devices using conventional polymer dielectrics as tunneling xss-layers.○ In addition, it implemented multi-bit operation even under low-voltage driving conditions presenting the possibility of developing low-power and high-density organic memory devices in the future.□ Professor Kim Min-hoe said, This study is meaningful in that it systematically explained how the molecular structure and nano-scale physical properties of polymers are linked to the electrical performance of actual memory devices and added An approach that designs the balance of multiple nano-factors rather than simple enhancement of individual physical properties can become an important standard for improving the performance and securing the reliability of organic non-volatile memory.○ He also noted, Organic memory devices can be linked to various application fields such as flexible electronic devices wearable systems and next-generation low-power information storage devices and added We expect that the polymer tunneling xss-layer design strategy presented in this study will contribute to the expansion of future organic electronic devices and polymer-based semiconductor materials research.□ Meanwhile, this study was conducted with support from the Key Research Institutes Support Program of the Ministry of Education-National Research Foundation of Korea and the International Cooperation Program managed by the Ministry of Science and ICT-National Research Foundation of Korea.
등록일2026-06-25 15:06:14

Hanbat National University Professor Kim Jung-hwan’s Team Identifies Principle of Enhancing Oxide Semiconductor Performance through Oxygen Pressure Control

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Photo caption: Hanbat National University Department of Applied Materials Engineering Master's student Ha Ji-hoon left and Department of Materials Science and Engineering Professor Kim Jung-hwanFigure caption: Schematic diagram of research on zinc oxide ZnO semiconductor material changes according to oxygen pressure control in rapid thermal annealing by Professor Kim Jung-hwan's research team at Hanbat National University- Reduction of defects and improvement of device characteristics in oxide semiconductors for next-generation displays and 3D memory□ Hanbat National University (President Oh Yong-jun) announced that a research team led by Professor Kim Jung-hwan from the Department of Materials Science and Engineering(first author Ha Ji-hoon in the Master's program) identified that by precisely controlling oxygen pressure during a Rapid Thermal Annealing process defects in oxide semiconductors utilized for next generation displays and 3D memory can be effectively reduced and device performance can be enhanced.○ This study was conducted on zinc oxide ZnO thin-film transistors which are representative oxide semiconductors and it is meaningful in that it presented a practical process optimization plan capable of enhancing the performance of oxide semiconductor devices through only oxygen pressure control in a heat treatment process without introducing new materials or complex additional processes.□ Oxide semiconductors are drawing attention as core materials for future semiconductor technologies such as next-generation displays 3D memory and neuromorphic devices based on their excellent electrical characteristics and possibility for low-temperature processes.○ However, because device performance varies greatly depending on the microstructure and defect state of thin films, precise defect control is essential. Previous studies have mainly focused on changes in heat treatment temperature or atmospheric gas composition leaving it insufficiently revealed that thin-film quality and device characteristics can vary depending on oxygen pressure even in the same oxygen atmosphere.□ Accordingly, Professor Kims research team set oxygen pressure as a core process variable in the rapid thermal annealing process for zinc oxide thin-film transistors fabricated through an Atomic xss-layer Deposition ALD process and analyzed its effects on thin-film characteristics and device performance.○ As a result, it confirmed that defects within the thin film can be effectively reduced and charge transport characteristics can be enhanced through only oxygen pressure control identifying the importance of oxygen pressure optimization to simultaneously achieve defect reduction and device performance enhancement.□ Professor Kim Jung-hwan said, This study is a result showing that semiconductor characteristics and device performance can be effectively improved through only oxygen pressure control departing from previous approaches centered on changes in heat treatment temperature or atmospheric gas composition and added We expect it to contribute to process optimization and productivity enhancement of various oxide semiconductor-based devices such as next-generation displays and 3D memory in the future.□ Meanwhile, this research result was published online on the 9th in 'Applied Surface Science' (IF 6.9 JCI Percentile 97.9%) an internationally renowned academic journal in the fields of materials science and coatingsthin films under the title of 'Oxygen-Pressure-Controlled Rapid Thermal Annealing for Defect Modulation and Performance Optimization in ALD ZnO Thin-Film Transistors.
등록일2026-06-15 14:47:53

Professor Ha Ji-hwan's Research Team at Hanbat National University Tackles Diabetes and Diabetic Foot with Colorimetric Monitoring... Developing the World's First Wearabl

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Professor Ha Ji-hwan's Research Team at Hanbat National University Tackles Diabetes and Diabetic Foot with Colorimetric Monitoring... Developing the World's First Wearable Colorimetric Diabetes Sensor- Joint research achievement of Hanbat National University, KAIST, Korea Institute of Machinery and Materials, and California Institute of Technology (Caltech)- Developing wireless and battery-free multi-modal optoelectronic sensor overcoming limitations of colorimetric monitoring method- Proving the possibility of monitoring severe complications such as diabetic diseases and foot ulcers (diabetic foot) for the first time in the world through precise color analysis of changes in glucose and pH concentrations- Succeeding in real-time continuous monitoring only with smartphone wireless communication... expected as a next-generation non-invasive diabetes management platform□ Hanbat National University (President Oh Yong-jun) announced on the 14th that Professor Ha Ji-hwan's research team at the Department of Mechanical Engineering, through joint research with teams from KAIST, Korea Institute of Machinery and Materials, and California Institute of Technology (Caltech), has developed the world's first 'wireless and battery-free multi-modal optoelectronic wearable sensor' capable of monitoring severe complications such as diabetes and diabetic foot in real-time through colorimetric monitoring (color change analysis) of sweat without drawing blood.○ This research was led by Professor Ha Ji-hwan of the Department of Mechanical Engineering at Hanbat National University and Dr. Cho Seok-ju of the Department of Mechanical Engineering at KAIST as co-first authors, and yielded world-class convergence research results with the joint participation of KAIST Endowed Chair Professor Park In-kyu, Principal Researcher Jeong Jun-ho of the Nano-Lithography Research Lab at the Korea Institute of Machinery and Materials, and Professor Wei Gao's team at the California Institute of Technology.□ Conventional sweat-based colorimetric sensors could monitor indicators like acidity (pH) but could not monitor glucose, an indicator of diabetes. Since they required photographing and analyzing the colors that change according to the components with a smartphone camera, they had large errors depending on ambient lighting (brightness, shadows) and could not perform continuous monitoring.○ In particular, there were clear technical limitations in accurately reading the changes in glucose or pH concentrations of diabetic patients at a medical level.□ This research is evaluated as an innovative achievement in that it successfully monitored the progress of diabetic diseases and signs of fatal complications such as diabetic foot (diabetic foot ulcer) non-invasively for the first time in the world using the colorimetric monitoring method.○ The rise in glucose levels and the collapse of skin pH balance in the affected area of the diabetic foot can be tracked and observed 24 hours a day with a single colorimetric cloth in the form of a wound dressing and an optoelectronic sensor, opening the way to issue early warnings and prevent the risk of diabetic foot, which can lead to tissue necrosis.○ It operates without a battery simply by bringing a smartphone close to the sensor, and the measured data of multiple biomarkers (glucose, pH, body temperature, etc.) is transmitted in real-time, allowing patients and medical staff to immediately monitor the condition.□ Professor Ha Ji-hwan of the Department of Mechanical Engineering at Hanbat National University emphasized, "The research, which started to alleviate the pain of diabetic patients who have to prick their fingers with a needle every day, has led to securing original technology capable of preemptively monitoring even fatal diabetic foot complications." He added, "The newly developed colorimetric monitoring-based optoelectronic sensor will become a core technology leading the customized bloodless health monitoring market for various chronic diseases as well as diabetes in the future.□ The results of this research were officially published in 'Advanced Functional Materials (Impact Factor 19.0, Top 4.5% in JCR)', a top-tier international academic journal in the field of materials science, and selected as the front cover paper. (Paper Title: Wireless, Battery-Free, Optoelectronic, Multi-Modal Sensor Integrated With Colorimetric Dressing for Diabetic Ulcer Management)□ Meanwhile, this research was conducted with the support of the Mid-career Researcher Program and Alchemist Project of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT, and the Daejeon RISE Project funded by the Ministry of Education and Daejeon Metropolitan City in 2025.
등록일2026-05-14 09:57:08

Hanbat National University Ranks 7th Globally in Entrepreneurial Culture and Ecosystem Category of 2026 WURI World University Rankings for Innovation

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- Proving competitiveness of global startup ecosystem through diffusion of entrepreneurial culture centered on Business Incubator Center- Selected as 34th in overall ranking rising 17 steps from 51st last Year□ Hanbat National University (President Oh Yong-jun) announced that it ranked 7th globally in the Entrepreneurial Culture and Ecosystem category and was selected as 34th in the overall ranking in the '2026 WURI World University Rankings for Innovation' released on the 7th.○ This achievement in the Entrepreneurial Culture and Ecosystem category was largely driven by the Entrepreneurial Competency Reinforcement Program and Inno-Clinic Program operated by the Business Incubator Center under the Industry-Academic Cooperation Foundation.○ These two programs have focused on encouraging the entrepreneurial spirit of university members and spreading a culture of innovation, exercising a substantial impact on actual industrial fields.□ The WURI World University Rankings for Innovation is a global university ranking system that departs from traditional research-oriented evaluations to evaluate universities based on innovativeness, implementability, and social impact, with 1927 universities from 96 countries around the world participating this year.○ Hanbat National University ranked 7th in the Entrepreneurial Culture and Ecosystem category and 34th overall in this 2026 evaluation, rising 17 steps from last year (51st), and has been listed in the 'Global Top 100 Innovative Universities' for six consecutive years since 2021, gaining international recognition for the university's continuous innovation achievements.○ By category, it entered the TOP 100 in a total of five categories along with the Entrepreneurial Culture and Ecosystem category, ranking 17th in the Inclusive Social Innovation for the Underprivileged category, 54th in the AI-Based Teaching and Learning Innovation category, 67th in the Financial Performance-Centered Technology Transfer category, and 81st in the University-Based Startup Project category.○ In particular, in the AI-Based Teaching and Learning Innovation category, AI agent-based creative problem-solving learning played a key role, which is analyzed to have led to high praise for establishing an environment where students can naturally utilize AI as a learning tool. This category entered the TOP 100 following last year, proving world-class competitiveness for two consecutive years.□ Hanbat National University President Oh Yong-jun stated, "The 2026 WURI evaluation result transcends a simple rise in ranking, proving that Hanbat National University has leaped forward as a global hub of innovative education○ He added, "A culture of entrepreneurship, xss-created and challenged directly by students, is taking root throughout the campus, and with the addition of teaching and learning innovation integrating AI and digital technology, the unique educational competitiveness of Hanbat National University is being reinforced○ He further emphasized, "Hanbat National University will advance as a university that learns through experience, grows through innovation, and competes with the world," adding, "We will strive further to complete our leap into a 'Regional Industry-University-Research Institute Integrated Innovation Platform University'"
등록일2026-05-13 09:51:42

Hanbat National University Was Chosen for the 2026 University AI Basic Curriculum Development Support Project

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□ Hanbat National University (President Oh Yong-jun) announced that it was chosen for the 2026 University AI Basic Curriculum Development Support Project hosted by the Ministry of Education and the Korean Council for University Education.○ This project is promoted to support curriculum development and strengthen instructors' AI education capabilities, ensuring university students acquire the basic competencies to understand and utilize artificial intelligence (AI).○ The project period is until February 2028, and Hanbat National University will receive 300 million won in funding for the first year by February of next year.□ Through this project, Hanbat National University plans to establish an AI basic education system for all students, with the core goal of enabling students to acquire everything from AI literacy to major-based problem-solving skills by operating AI foundational courses and major-linked education in stages.○ In the basic curriculum, Understanding and Utilizing AI will be operated as a university-specialized mandatory course, and practical and ethics-focused courses such as AI Practical Application ⅠⅡ and AI Agents and Fairness will be newly established to prepare a step-by-step AI curriculum.○ Additionally, it will operate a microdegree program combining majors and AI. Centered on humanities and social sciences, it plans to strengthen students' major-based AI utilization capabilities by opening various convergence curricula, including ▲AI-based Global Public Talent ▲AI-based Global Language and Cultural Content ▲AI-utilizing Chinese Language Data Expert.○ AI capacity-building programs for instructors will also be promoted together. It will operate step-by-step training programs focusing on utilizing generative AI and data-based tools, and support AI-based teaching and learning innovation by establishing a cooperation system between engineering and non-engineering faculty.○ Furthermore, it plans to xss-create a practice-oriented educational environment that integrates online learning, practice, and project-based education utilizing educational infrastructure such as the LMS (e-Class Hanbat), AI practice rooms, and the AI Design Center.○ Lastly, it plans to share the AI curriculum through credit exchanges and joint operations with national universities in the Chungcheong region in the future, and spread a university cooperation-based AI education model through KOCW release and performance dissemination.□ Lee Seong-ho, Director of the Educational Innovation Headquarters at Hanbat National University, stated, Through this project, we will equip all students with the basic competencies to understand and utilize AI, and foster talent who will lead future industries through AI convergence education combined with their majors.
등록일2026-04-24 14:48:58

Professor Choi Yoon-seok of Hanbat National University - Chiang Mai University Joint Research Team, Development of Next Generation Supercapacitor Materials

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Photo dexss-scription: Professor CChoi Yoon-seuk of Hanbat National University (left) and Professor Y. Mona of Chiang Mai UniversityPhoto dexss-scription: Microscopic photo of the nanostructure of the new composite electrode material developed by the joint research team (left) and the operation of an LED bulb using the pouch-type next-generation high-speed battery developed by the team (right)- Achieved enhanced energy storage performance supercapacitors by combining Flower-shaped nanoparticles and thin graphene- International joint research achievement based on Global PBL exchanges with Chiang Mai University since 2019□ Hanbat National University announced that the research team of Professor Choi Yoon-seok from the Department of Electronics Engineering developed a fast-charging next-generation supercapacitor through international joint research with a research team from Chiang Mai University in Thailand.○ The research results were published in March in 'Energy Nexus' (Impact Factor 9.5, JCR top 7%), a world-renowned academic journal in the energy field, under the title Enhanced energy storage performance of Cu2SnS3@rGO electrode in pouch-type asymmetric supercapacitors.* Supercapacitor: A next-generation energy storage device that stores less energy than general batteries but has very fast charging and discharging speeds, high output, and a long lifespan.○ To improve supercapacitor performance, attention has been paid to 'copper-tin compounds' capable of storing significant energy, but these materials have drawbacks such as volume expansion during charging and discharging, low electrical conductivity, and short lifespans.□ To solve these problems, the research team of Professor Choi Yoon-seok and Professor Y. Mona from Chiang Mai University utilized 'graphene (reduced graphene oxide)'.○ They developed a new composite material (Cu2SnS3@rGO) by evenly sandwiching copper-tin nanoparticles, made into a fine 'flower-shape' to increase surface area, between thin graphene sheets.○ The graphene acted as a conductor to increase electrical conductivity and as a buffer to suppress the expansion of the copper-tin compound during charging, overcoming the limitations of existing materials.○ The researchers manufactured a 'pouch-type' supercapacitor using this material as an electrode and confirmed advantages such as excellent energy storage capacity, power density, and long lifespan. They also demonstrated that it is ready for immediate application in actual electronic devices through LED bulb operation experiments.□ This international joint research achievement is particularly meaningful as it is a valuable result of the Global Project Based Learning (Global PBL) program, which Hanbat National University and Chiang Mai University have consistently maintained since 2019.○ This program is a creative convergence curriculum where multinational students and researchers form teams to identify and solve locally applicable engineering topics, such as regional problem solving and conceptual approaches. The two universities have successfully operated the program from the 1st Global PBL in 2019 to the 5th program.○ Through these multinational convergence programs, students and researchers from both countries have improved their international cooperation, communication, and engineering design skills. The solid foundation of exchange built over many years naturally led to this large-scale international joint research opportunity.□ Professor Choi Yoon-seok of Hanbat National University said, It is very meaningful that we xss-created a high-performance new material that exceeds the limits of existing battery materials using copper and tin, which can be obtained affordably around us. Above all, the close network with overseas researchers established through Global PBL exchanges served as a strong foundation for this research, and we will continue to foster talent with global leadership and pursue convergence research.□ Meanwhile, the Global PBL program, which served as the basis for this achievement, was operated with support from the National University Promotion Project. The publication of this paper is evaluated as a representative achievement of the international exchange that Hanbat National University and Chiang Mai University have continued for many years.○ Such continuous international exchange is important as it enhances students' global problem-solving and communication skills while strengthening the foundation for research cooperation among faculty, leading to follow-up achievements such as joint papers and projects. Cooperation between the two universities is expected to establish itself as an exemplary international exchange model that develops both education and research together.
등록일2026-04-06 14:42:26

Research Team Led by Prof. Park Jeong-eon of the Department of Creative Convergence Engineering Selected for Payload in Nuri's 6th Launch under the 'Space Verification Su

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□ Hanbat National University announced on the 11th that a satellite payload developed by professor Park Jung-eons research team from the Department of Creative Convergence Engineering has been selected for the Space Verification Platform Unit 3 of the Nuri rockets 6th launch.○ The payload developed by Professor Park Jung-eons research team is a 'Radiation-Shielding DC/DC Converter' manufactured via xss-metal 3D printing and featuring domestic components and upscreened COTS power semiconductors. It will be deployed on the 6th Nuri rocket's space verification satellite in 2027 to stably convert and supply battery power to the low-voltage levels required by the payload control circuits.○ This selection is recognized as a significant achievement that proves the flight heritage and feasibility of domestic space components. Among the 24 competing teamsincluding SK Hynix, Samsung Electronics, LG Electronics, ETRI, and other leading universities and space startupsthe research team ranked in the top tier, demonstrating its technological excellence and competitive edge.□ Drawing on a decade of expertise at the Korea Aerospace Research Institute (KARI), Professor Park Jung-eon led the development of this payload. His leadership is backed by numerous successful projects in domesticating electronics for various space systems, including low-earth orbit (LEO), geostationary, medium-sized, and small satellites, as well as lunar orbiters.○ Moving beyond theoretical research for academic papers, this technology was developed with a focus on manufacturing and validating flight-ready hardware for actual orbit. Its primary goal is to accumulate 'Space Heritage'a proven track record of successful operation in the space environment.○ For COTS power semiconductors, the team established a 100% screening protocol and Lot Acceptance Test (LAT) procedures based on NASA guidelines and MIL (U.S. Military Standard) specifications. By developing dedicated test boards and ground verification equipment, they secured a solid foundation for upscreening to ensure reliability in space environments.○ In addition, the team confirmed flight feasibility by validating the mechanical, thermal, and radiation performance of the xss-metal 3D-printed structures and housings. By incorporating domestic components into core circuits, they demonstrated the potential for self-sufficiency in the supply chain and the strengthening of the domestic technological base for space electronics.□ Professor Park Jung-eon stated, "The true significance of this selection lies not just in the selection itself, but in stably performing and completing the proposed mission profile throughout the mission period, once we have successfully entered the target orbit following the 6th Nuri rocket launch in 2027.○ He emphasized, "This is not about a basic verification like simply checking for communication signals right after launch. It is far more important to build Space Heritage by comprehensively proving that all planned functions are properly implemented and required performance levels are maintained in the actual space environment throughout the entire mission duration."○ He added, "To this end, we are planning space environment tests and TMTC (Telemetry & Telecommand) board interface tests this year. We also intend to release more detailed information regarding the specific components, functions, development process, and the research team behind our payload closer to the actual integration or launch date."□ Furthermore, this achievement serves as a prime example of the Department of Creative Convergence at Hanbat National University demonstrating its hardware-centered research and practical engineering education capabilities in the defense and space sectors. It holds great significance in strengthening the foundation for technological independence and fostering specialized professionals.○ Moreover, the department continues to carry out industry-academic projects with aerospace companies and government-funded research institutes. By integrating field-specific technical demands and development procedures into its education and research, the university is expanding its foundation for fostering a practical, job-ready workforce.
등록일2026-03-11 13:22:49

HRD Center Selected as Operating Agency for the 'Mirae Naeil Work Experience Program' for the 3rd Consecutive Year

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- Providing practical job experience to a total of 450 young adults through internship and project-based programs□ Hanbat National University announced on the 9th that it has been selected as an operating institution for the Future-Tomorrow Work Experience Program for the third consecutive year. The program, hosted by the Ministry of Employment and Labor and the Korea Chamber of Commerce and Industry, will provide practical work experience opportunities to 450 young individuals, including 150 internship positions and 300 project-based positions.○ The Future-Tomorrow Work Experience Program is a government-supported initiative designed to strengthen the employability of unemployed youth (ages 15 to 34) by providing field-based job experience. The program aims to address the labor market mismatch between youth employment and corporate demand by connecting talented young individuals with companies.□ Through this project, Hanbat National University will operate 'internship-based' programs for on-site practical experience and 'project-based' programs focused on solving real-world challenges proposed by companies.○ The internship-based program involves approximately eight weeks of on-site practical training. Meanwhile, the project-based program operates on a Project-Based Learning (PBL) model, where youth form teams to solve real-world tasks assigned by companies.○ In particular, participating youth can systematically enhance their practical skills and problem-solving abilities under the guidance of a mentoring group, consisting of industry experts and university faculty. Additionally, participants will receive a prescribed activity allowance throughout the program.○ Hanbat National University is continuously recruiting companies and youth to participate in this project. You can apply through the Youth Work Experience Portal (https://yw.work24.go.kr/main.do) or the Hanbat National University Institute for Innovative & Creative Education website (https://iace.hanbat.ac.kr/kr/).□ Professor Byeon Young-jo, Director of the HRD Center at Hanbat National University, stated, "Based on a foundation of industry-academic cooperation, Hanbat National University runs various programs to help youth develop the practical and experience-based skills actually demanded by the industry. Through this project, we will further strengthen our partnership with local companies and provide active support to foster talent that settles in the region by facilitating their employment within local enterprises."□ Inquiries: Hanbat National University HRD Center (042-828-8939)
등록일2026-03-09 13:18:37

Department of Computer Engineering Wins Grand Prize at the 'Smart Agriculture AI Competition', Receiving the Rural Development Administration Award

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□ Hanbat National University announced on the 20th that the DfX Lab. research team from the Department of Computer Engineering (led by Professor Lee Hyun-bin) won the Top Excellence Award (Rural Development Administration Award) at the '2025 Smart Agriculture Artificial Intelligence (AI) Competition'.○ Hosted by the Ministry of Agriculture, Food and Rural Affairs (MAFRA) and the Korea Agriculture Technology Promotion Agency (KOAT) for the general public, this competition was designed with the goal of 'developing AI cultivation models for strawberries adapted to climate change.□ The competition was conducted in two stages: a preliminary round to develop AI algorithms using public growth and environmental data from Outstanding farms, and a final round where the selected algorithms were applied to actual greenhouses for remote cultivation and management.○ The competition drew significant interest in the field of smart agriculture AI, with participants ranging from domestic universities and companies to international institutions and global corporations. Competing teams demonstrated their technological maturity by integrating AI throughout the entire cultivation processincluding growth prediction, goal setting, and control strategy formulationall based on environmental and biological data.○ A total of 52 teams and 275 individuals participated in the competition. Following preliminary testing, a hackathon, and presentation evaluations, four finalist teams competed over a six-month period in the final round focused on greenhouse strawberries. As a result, the Hanbat National University DfX team secured second place, earning the Top Excellence Award.□ Led by undergraduate student Jo Min-seo, team DfXcomprised of masters students Song Chan-ho and Yu Tae-won, and doctoral student Lee Dong-jin applied their self-developed AI control model to manage strawberry growth and environmental conditions at a smart greenhouse in Wanju, Jeonbuk, during the finals.○ The team received high marks for implementing a cultivation strategy AI model that integrates sensor and image data to set target growth states on a daily, weekly, and monthly basis. By precisely controlling the greenhouse environment accordingly, they succeeded in harvesting high-quality strawberries with relatively low energy consumption.□ Professor Lee Hyun-bin from the Department of Computer Engineering stated, "This competition provided a powerful motivation for our students by confirming that their research results could directly address labor shortages in the agricultural field." He added, "I would like to express my deep gratitude to the organizers of the Smart Agriculture AI Competition for providing this platform and for their dedicated efforts in monitoring the systems and crops around the clock, even on holidays, for several months.□ The Smart Farm research team at Hanbat National University's DfX Lab is focusing on agricultural labor automation. Their work involves developing agricultural task guidance systems that predict and notify workers of necessary actions during crop growth or in response to abnormal conditions. Furthermore, the team is advancing the development of agricultural mobile robots, robotic arm control, and specialized robotic hand structures designed for specific farming tasks.
등록일2026-02-20 17:01:24

Professor Kim Jung-hyun’s Research Team(Department of Materials Science and Engineering) Identifies Composition-Performance Correlation in Cathodes for Symmetric Solid Ox

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Photo Caption: (Clockwise from top left) Lim Yu-ri (Graduate Student, Dept. of Applied Materials Engineering, Hanbat National University), Dr. Harald Schlegl (Lancaster University), Prof. Abul Kalam Azad (University of Brunei Darussalam), Kang In-yong (CEO of HnPower), Prof. Choi Won-seok (Dept. of Electrical Engineering, Hanbat National University), and Prof. Kim Jung-hyun (Dept. of Materials Science and Engineering, Hanbat National University)□ A research team led by Professor Kim Jeong-hyun from the Department of Materials Science and Engineering announced the results of a study that systematically analyzed and identified the correlation between manganese (Mn) substitution ratios and the electrochemical performance, electrical conductivity, and structural stability of Cobalt-free (Co-free) xss-layered perovskite electrode materials applicable to Symmetrical Solid Oxide Fuel Cells (SSOFCs).○ While conventional Solid Oxide Fuel Cells (SOFCs) have limitations in that different materials must be used for the cathode and anode, the research team proposed Symmetrical Solid Oxide Fuel Cells (SSOFCs) that can operate in both oxidizing and reducing atmospheres with a single electrode material.○ Masters student Lim Yu-ri participated as the lead author of this study. The research was published online on the 30th in Ceramics International, a prestigious international journal in the field of materials science, under the title "Electrochemical properties of xss-layered perovskite for the electrode of symmetrical solid oxide fuel cells."○ The research team synthesized xss-layered perovskite oxides with compositions of SmBa(Fe1-xMnx)2O5+d(X=0, 0.1, 0.3, 0.5) and analyzed their electrochemical impedance characteristics in both air and hydrogen atmospheres using an LSGM (LaGaO3-based material) electrolyte-based half-cell.○ Consequently, the SmBa(Fe0.9Mn0.1)2O5+d composition exhibited a lower area-specific resistance (ASR) compared to the reference compositions across the entire temperature range, demonstrating relatively balanced electrode reaction characteristics in both air and hydrogen atmospheres."○ Furthermore, electrical conductivity measurements revealed that conductivity tended to decrease with increasing Mn content in both air and nitrogen atmospheres. This trend was confirmed to be associated with a reduction in orbital overlap and changes in hole concentration resulting from Mn substitution compared to the FeOFe bonds.○ In contrast, it was confirmed that a small amount of Mn substitution (X=0.1) contributed to an enhancement in electrical conductivity under a hydrogen atmosphere. Furthermore, an abrupt decrease in conductivity was observed at approximately 450C during the initial heating process.○ X-ray diffraction (XRD) analysis confirmed a structural transition from cubic to orthorhombic occurring exclusively under a reducing atmosphere within that temperature range. This reveals that the structural transformation is a key factor directly linked to the observed changes in conductivity○ Subsequently, the electrical conductivity increased again in the high-temperature region. It was also confirmed that both the structural and electrical properties remained stable during repeated thermal cycling experiments.□ Professor Kim Jung-hyun from the Department of Materials Science and Engineering emphasized, "Through this study, we were able to systematically identify the effects of adjusting the Fe/Mn substitution ratio on the electrochemical performance, electrical conductivity, and structural stability of xss-layered perovskite electrodes." He further noted, "The core achievement of this research is confirming that a minor Mn substitution enables balanced performance for both oxygen reduction and hydrogen oxidation reactions, making it a viable symmetrical SOFC electrode capable of operating in both oxidizing and reducing atmospheres."○ First author Lim Yuri, a masters student, stated, The electrical conductivity and electrode reaction characteristics exhibited distinct changes depending on the Fe/Mn substitution ratio. A significant result of this study is the experimental elucidation of the correlation between structural transitions and conductivity changes occurring specifically in a reducing atmosphere. She added, These analytical results provide valuable design guidelines for optimizing electrode compositions in symmetrical solid oxide fuel cells (S-SOFCs).□ This work was a collaborative effort involving Hanbat National University, Lancaster University, HnPower Co., Ltd., and the University of Brunei Darussalam. The research was supported by the Ministry of Science and ICT (MSIT) under the 'Chungcheong Region Distributed Energy Response Energy Technology Sharing University' program (No. RS-2024-00394769), and the Basic Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. RS-2024-00464727).
등록일2026-02-05 17:04:48