麻豆影音

AISS & ABC, Successful Completion of International Exchange Programs for Foreign Students

麻豆影音 has successfully concluded its international exchange programs for foreign students_the 2025 Ajou International Summer School (AISS, Ajou International Summer School) and the (ABC, Ajou Bespoke College). The ABC Program ran for two weeks, from July 2 to July 15, beginning with an orientation held at Yulgok Hall. A total of 19 students from partner universities abroad including the University of Wisconsin, University of Southern California, University of South Florida, University of Nevada, Las Vegas, and the University of California, San Diego participated alongside 10 students from 麻豆影音. The program was designed to foster growth through capstone design projects, corporate field trips, and cultural exchange between international students and their Ajou counterparts. Participants visited companies such as Naver, Samsung Electronics, Gyeonggi Provincial Council, Dentium, Celltrion, and Daewoong Pharmaceutical, and explored Korean culture and history through experiences like visits to the National Museum of Korea, K-POP dance classes, and the Hwaseong Haenggung Palace. The program also included special lectures such as: Data Analysis on Korea's Economic and Cultural Development by Prof. Yoon Cheon-Seok (Global Business) Korea's Industrial History and Growth through Early Entrepreneurship by Prof. Kim Chan-Woo (University-Industry Cooperation) Modern History Rooted in Ancient Korea by Prof. Han Sang-Woo (History) Promoting Historical Content through National Museum Exhibits by Prof. Park Jae-Yeon (Cultural Contents) The AISS program was conducted over a three-week period starting on June 30, concluding with a graduation ceremony on July 18. During the program, students took courses such as: Data Analytics and Business Decision Making by Prof. Lee Sang-Kyu (Endicott College) Macroeconomic Development by Prof. Kim Tae-Bong (Economics) Understanding Korean Culture by Scott Scattergood (Dasan College) Sustainability by Prof. Lee Jae-Young (Environmental Safety Engineering) Korean Language by Professors Jeong Mi-Hye and Jeong Mi-Ji (Dasan College) In addition to classes, students enjoyed various cultural experiences including K-POP dance, traditional Korean cuisine, and visits to Bukchon Hanok Village. They also toured local landmarks such as the Samsung Innovation Museum, Hwaseong Haenggung Palace, and Suwon Media Center, gaining insights into both Korea’s past and present. At the AISS farewell, Prof. Lee Sang-Kyu told the graduates, “If you experienced something here that can only be found in Korea, make sure to record it. It will surely be something worth remembering.” He emphasized the lasting value of the students’ experiences in Korea. Exchange students enjoyed a K-pop dance Hwaseong Haenggung Palace Tour

Team professor Inhwan Lee Develops New Synthetic Method for Designing Semiconducting Polymer Structures

Professor Inhwan Lee’s research team at our university has successfully developed a new synthetic method that allows for flexible design of the structure of semiconducting polymer materials. This advancement enables faster production of polymers used in electronic devices and is expected to contribute significantly to the development of next-generation organic semiconductors. Professor Lee revealed that through a “Multicomponent Polymerization (MCP)” technique, which reacts three different monomers simultaneously, they have developed a technology that precisely controls the sequence inside semiconducting polymers and efficiently implements various structures. This research was published in the July issue of Angewandte Chemie International Edition under the title “Versatile Halide-Pair-Driven Multicomponent Polymerization for Library Synthesis of Sequence-Controlled Semiconducting Dendronized Polymers.” The paper received excellent reviews and was selected as a “Very Important Paper (VIP).” The study involved doctoral student Hae-nam Choi (right in the photo) from the Department of Energy Systems at 麻豆影音 as the first author. Co-authors included Soo-min Go (Master’s graduate, 麻豆影音), Se-min Son (Integrated Master’s and PhD program, 麻豆影音), Ji-su Woo (Master’s student, UNIST Department of Energy Chemical Engineering), Hyun-woo Park (PhD student, ETH Zurich Department of Materials), and Dong-jun Lee (Graduate of integrated Master’s and PhD program, 麻豆影音). Professors Tae-rim Choi (ETH Zurich, Materials), Won-jin Kwak (UNIST, Energy Chemical Engineering), and Hwan-myung Kim (麻豆影音, Energy Systems) participated as co-authors, and Professor Inhwan Lee (麻豆影音, Department of Chemistry) served as the corresponding author. Poly(triarylamine) (PTAA) polymers are used in various organic electronic devices such as organic light-emitting devices, perovskite solar cells, electrochromic devices, flexible electronics, and battery electrodes. PTAA is especially notable as a hole transport material in perovskite solar cells. However, traditional synthesis of poly(triarylamine) polymers involved complicated multi-step synthesis and purification of reaction intermediates, which posed challenges for commercialization and cost efficiency. The core of this research lies in presenting a new polymerization strategy that precisely controls the polymer sequence by designing the reaction order of three readily available monomers mixed together in a single step. The research team successfully synthesized a library of semiconducting poly(triarylamine) polymers where arylamine and two types of aryl dihalide monomers are connected in a predetermined sequence. They also expanded this strategy to synthesize complex dendronized polymers, greatly broadening the structural diversity of polymers. As a result, poly(triarylamine) polymers and their derivatives used in electronic devices can now be rapidly produced in library form, which is expected to greatly accelerate the development of next-generation organic semiconductors. Professor Inhwan Lee said, “Through this research, we have enabled the cheap and diverse synthesis of expensive polymers in a single reaction step. We also expect this to contribute to improving the performance of organic electronic devices.” This research was supported by the National Research Foundation of Korea’s Mid-career Researcher Support Program, the G-LAMP program, the Carbon to X technology development project for producing useful substances, and the Leading Research Center (MRC) program. Image showing the synthesis process of sequence-controlled semiconducting polymers via sequential C–N coupling reactions

Team Prof. Taekwang Yoon develops Energy Harvesting Technology

(Photo) Schematic diagram of the energy generation system and mechanism: (a) Autonomous electrical energy harvesting system driven by water circulation due to temperature difference between day and night (b) Water harvesting mechanism using UiO-66-NH? (c) Electrical energy generation mechanism using Ni3(HITP)2 (d) Autonomous water harvesting and sustainable electrical energy generation system under ambient environmental conditions A Korean research team has developed a technology that collects moisture from the air using temperature differences between day and night, and converts it into electrical energy. The joint research team, led by Professor Taekwang Yoon from the Department of Applied Chemistry and Biological Engineering at 麻豆影音 and Principal Researcher Giro Yoon from the Korea Institute of Industrial Technology (KITECH), has introduced an innovative energy harvesting system. This system is capable of generating electricity independently without any external water supply, even in extreme environments such as remote areas or deserts where water is scarce. The results of this research were published in the internationally renowned journal Composites Part B: Engineering (top 1% in JCR), under the title: "Sustainable electrical energy harvesting via atmospheric water collection using dual-MOF systems." The first authors of the study are Ji-Hyun Lee (integrated master’s and Ph.D. program, Hanyang University), Dong-Yeon Kim (Ph.D. candidate, KAIST), and Yong-Gyun Lee (master’s student, 麻豆影音). Professor Taekwang Yoon and Principal Researcher Giro Yoon served as co-corresponding authors. Traditional water-based energy harvesting technologies rely on the potential difference between wet and dry surfaces to generate electricity, but they have the limitation of requiring a constant external water supply. To overcome this, the research team was inspired by plant transpiration and capillary action, and combined two types of metal-organic frameworks (MOFs)—UiO-66-NH? and Ni?(HITP)?. As a result, they successfully developed a fully autonomous system that collects moisture from the air and generates electricity on its own. UiO-66-NH? absorbs moisture from the cool night air and releases the absorbed moisture during the warmer daytime. The released moisture condenses on the surface of fibers coated with Ni?(HITP)?. This condensation causes asymmetric wetting on the fiber surface, generating a potential difference, which allows electricity to flow. Through this process, the research team successfully achieved a maximum power density of 2.6 μW/cm? and an energy density of 1.1 mJ/cm?. Notably, UiO-66-NH? exhibited excellent moisture adsorption and desorption performance, not only under normal conditions but also in low-humidity environments, showing its potential for use in various settings. The team conducted experiments simulating real climate conditions—including desert, coastal, and inland environments—and confirmed that the system could stably generate moisture and electricity autonomously across all tested scenarios. Professor Taekwang Yoon stated: “This research demonstrates the feasibility of a self-sustaining energy harvesting system that can operate without any external power or water supply. We hope it serves as a viable solution in disaster zones or areas with limited access to electricity.” Principal Researcher Giro Yoon added: “This system provides a technological foundation for easy electricity generation, even in extreme climates or regions lacking infrastructure. We expect this to make a meaningful contribution to sustainable energy technologies for a carbon-neutral society.” This research was supported by the National Research Foundation of Korea under the Global Research Infrastructure Cooperation Hub Program. [Energy Harvesting] refers to the technology of collecting energy from natural sources—such as sunlight, vibrations, heat, wind, waves, or even waste energy from daily life—and converting it into usable electrical energy. From the back row, starting from the left : Professor Taekwang Yoon (麻豆影音), Researcher Dongyeon Kim (KAIST), Principal Researcher Giro Yoon (KITECH), Researcher Yonggyun Lee (麻豆影音), and Researcher Jihyun Lee (Hanyang University)

2025 Ajou International Summer Program 'AISS' and 'ABC' has officially started!

AISS orientation was held on July 1 at Yeonam Hall, Students overview of the program and interact exchange sessions ABC orientation was held on July 2 at Yulgok Hall. Various program-related information and guidance were provided 麻豆影音 has started its international exchange programs for foreign students: the 2025 Ajou International Summer School (AISS) and the Ajou Bespoke College (ABC) program. The AISS started off on July 1 in Yeonam Hall with an orientation and began its three-week academic session. A total of 64 students from 10 universities across eight countries—including Germany, Lithuania, the Netherlands, France, Spain, Austria, Uzbekistan, and Indonesia—are participating. Among them, 29 students are from 麻豆影音 at Tashkent(AUT). During the program, participants will choose two out of five courses—Data Analysis & Business Decision-Making, Macroeconomic Development, Understanding Korean Culture, Sustainability, and Korean Language—to earn six credits. Beyond academics, students will experience K?POP dance classes, traditional food experiences, visits to Bukchon Hanok Village, visits to Samsung Innovation Museum, Suwon Hwaseong Haenggung, Suwon Media Center, and more. The ABC program began its orientation on July 2 at Yulgok Hall and runs for 14 days until July 15. This year’s includes 19 students from top U.S. universities—University of Wisconsin, USC, University of South Florida, UNLV, UC San Diego—as well as 10 麻豆影音 students. Centered on a capstone project led by Professor So Jae?hyun (Construction & Transportation Engineering), the curriculum also features lectures on data analysis of Korea’s economic and cultural development (Prof. Yoon Cheon?seok), the history and current state of Korean industry and entrepreneurial spirit (Prof. Kim Chan?woo), the transformation from ancient to modern Korean history (Prof. Han Sang?woo), and promoting historical content focusing on National Museum artifacts (Prof. Park Jae?yeon) . Field trips include visits to Samsung Innovation Museum, Celltrion, DaeWoong, Dentium, Naver, the National Museum, Gyeonggi Provincial Assembly, a Han River cruise, and Suwon Hwaseong, giving participants diverse insights into Korean culture and history.

Prof. Ilkwon Oh’s Research Team Develops AS-ALD Technology for Semiconductor Miniaturization

- Area-Selective Atomic Layer Deposition (AS-ALD) Gains Attention as a Key Breakthrough Technology - Enables Patterning Without Exclusive 'EUV Equipment', Allowing for Customized Fabrication * Caption for the image above: An illustration showing the selective formation of red-colored aluminum oxide (Al?O?) only at the grain boundaries — the leakage current pathways — of zirconium dioxide (ZrO?) through the new area-selective atomic layer deposition (AS-ALD) process developed by the 麻豆影音 joint research team. This technology is expected to maximize storage capacity while minimizing data loss in DRAM devices. Professor Ilkwon Oh’s research team at 麻豆影音 has developed a technology that enhances the precision of semiconductor processes through area-selective atomic layer deposition (AS-ALD). This advancement is expected to play a crucial role in the manufacturing of next-generation miniaturized and high-density semiconductor devices. Professor Ilkwon Oh (Department of Intelligent Semiconductor Engineering and Department of Electrical and Computer Engineering) and a joint research team from the Samsung Advanced Institute of Technology (SAIT) announced their successful development of an AS-ALD technology that can significantly improve the precision of thin film deposition in semiconductor fabrication. Their research was published in the April issue of Advanced Science under the title “Area-Selective Atomic Layer Deposition on Homogeneous Substrate for Next-Generation Electronic Devices.” Minjeong Lee, Byungjun Won, and Youngjin Lim (Master’s students from the Department of Intelligent Semiconductor Engineering at 麻豆影音) participated as co-first authors, and Professor Ilkwon Oh served as the corresponding author. Dr. Seonghyun Kim and Dr. Jungkyu Song from SAIT also contributed as co-authors. Area-Selective Atomic Layer Deposition (AS-ALD) is a process that enables deposition to occur only on specific areas of a semiconductor substrate. This technology allows precise application of desired materials to selected locations on the semiconductor surface. Traditional Atomic Layer Deposition (ALD), widely used in semiconductor processes, forms uniform thin films across the entire substrate. It has been a key technique in the manufacturing of memory devices such as DRAM and NAND flash, as well as non-memory (system) semiconductors. However, as semiconductor devices continue to shrink and become more densely integrated, there is an increasing demand for selective thin-film deposition to reduce process steps, lower manufacturing costs, minimize error rates, and improve precision and efficiency. Consequently, AS-ALD has emerged as a core next-generation semiconductor processing technology, attracting attention as a breakthrough solution capable of overcoming the technical limits currently facing the semiconductor industry. By employing AS-ALD, many conventional process steps can be eliminated, dramatically lowering manufacturing costs and the potential for errors. Additionally, AS-ALD enables semiconductor patterning without the need for expensive extreme ultraviolet (EUV) lithography equipment, which has been monopolized by certain companies, further intensifying industrial and academic interest. Furthermore, AS-ALD opens possibilities for customized fabrication of new types of three-dimensional micro-semiconductor devices that are difficult to achieve using traditional techniques and equipment. Despite these advantages, the implementation of AS-ALD in actual semiconductor mass production has faced significant challenges. Depending on the chemical materials and substrates used, maintaining precise selective deposition has been difficult, and electrical performance degradation has often been observed when applied to real devices. To overcome these limitations, the 麻豆影音 research team targeted the widely used ZAZ (ZrO?/Al?O?/ZrO?) capacitor layer structure in DRAM processes. Specifically, they selectively deposited aluminum oxide (Al?O?) only at the grain boundaries—the paths where leakage currents typically occur—thereby minimizing unnecessary Al?O? deposition and effectively improving device performance and reliability. * Transmission electron microscope (TEM) images and chemical composition analysis confirmed the selective formation of Al?O? at grain boundaries. Graphs b and c illustrate the concentration of Al depending on the distance from the grain boundaries, verifying the selective deposition of Al?O? at the desired locations. Using zirconium dioxide (ZrO?) substrates, the research team experimentally analyzed and demonstrated the mechanisms for selective deposition, proving that selective control was feasible. They also confirmed that AS-ALD not only enhances semiconductor device performance but also significantly reduces unwanted leakage currents. This breakthrough suggests a method to maximize storage efficiency in DRAM devices and minimize data loss during device miniaturization, marking an important technical milestone for memory device advancement. Professor Ilkwon Oh stated, "While area-selective atomic layer deposition is essential for overcoming technological barriers in the semiconductor industry, there have been many challenges in applying it to real processes. Our research experimentally demonstrates that selective deposition and control are achievable, representing a significant advance in semiconductor processing technology." He added, "We will continue further research to enhance device performance and improve process efficiency for industrial applications." The 麻豆影音 research team plans to pursue follow-up studies to develop more precise control techniques for atomic layer deposition processes and to explore their industrial applicability.