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Ph.D. Woochan Lee, Ph.D. Candidate Hyeonwook Chae and Sangin Hahn, Integrated Master’s and Doctoral Program Student (advisor Seunghyup Yoo) won Best Student Paper Award at Optica APC 2023 Conference

Ph.D. Woochan Lee, Ph.D. Candidate Hyeonwook Chae and Sangin Hahn, Integrated Master’s and Doctoral Program Student (advisor Seunghyup Yoo) won Best Student Paper Award at Optica APC 2023 Conference

Woochan Lee(Ph.D.), Hyeonwook Chae(Ph.D. candidate), and Sangin Hahn(Integrated Master’s and Doctoral Program Student) in EE Professor Seunghyup Yoo’s lab received Best Student Paper Awards at the 2023 Optica APC International Conference held in Busan, South Korea.

The APC (Advanced Photonics Congress) is a prestigious academic conference in the field of optics and photonics organized by the Optica (formerly OSA) group. It specializes in optical materials, optical signal processing, optical communications, and integrated optics.

[From left: Woochan Lee(Ph.D.), Hyeonwook Chae(Ph.D. candidate), and Sangin Hahn(Integrated Master’s and Doctoral Program Student), and Prof. Seunghyup Yoo]

The research conducted by Woochan Lee (Title: Deep-red to Near-infrared Organic Light-emitting Diodes based on Dinuclear Platinum(II) complex, with co-authors Palanisamy Rajakannu, Hyung Suk Kim, Sunhyung Koo, Sanghoon Park, and Prof. Seunghyup Yoo), Hyeonwook Chae (Title: Optimization of Transparent OLEDs for Visual Stimulation in Bio-applications, with co-author Prof. Seunghyup Yoo), and Sangin Hahn (Title: Low Temperature Processed Flexible Organic Photodetectors with High Spectral Detectivity, with co-author Carmela Michelle Esteban, Ramakant Sharma, and Prof. Seunghyup Yoo) introduced mechanical and optical optimization strategy for designing and highly efficient and functional organic light emitting diodes (OLEDs) and organic photodiodes (OPDs), making it highly valuable in the fields of information display and imaging solutions.

The remarkable contribution of these research were recognized at the SOLED(Solar Energy and Light Emitting Devices) session in APC conference with Best Student Paper Awards. Congratulations and gratitude to Professor, awardee, and the co-authors for their remarkable achievement in this research endeavor.

Professor Yoo Seunghyup’s Lab graduate Dr. Jee Hoon Sim awarded the ‘UDC Innovative Research Award’ at the 2023 International Meeting on Information Display (IMID)

Professor Yoo Seunghyup’s Lab graduate Dr. Jee Hoon Sim awarded the ‘UDC Innovative Research Award’ at the 2023 International Meeting on Information Display (IMID).

Our school has won the UDC Innovative Research Award at the 2023 International Conference on Information Display.

Last week (August 22-25, 2023), at the 2023 International Meeting on Information Display (IMID 2023) held at BEXCO in Busan, Dr. Jee Hoon Shim from our department (who graduated in August 2023, supervised by Professor Yoo Seunghyup) won the ‘UDC Innovative Research Award in Organic Electronics & Display’ for his paper.

The UDC Innovative Research and Pioneering Technology Awards are presented to individuals or teams recognized for creating innovative ideas or research plans that influence the organic electronics and display industry.

The UDC Awards come with a prize money of 15 million won. Last year, two students from our department also won awards in all categories.

The title of the paper of this year’s recipient, Dr. Sim Jee Hoon, is ‘OLED for Healthcare: Management of Diabetes via Inner-Body Photobiomodulation’.

Awards Ceremony: From the left, Dr. Jee Hoon Sim (UDC award winner), Dr. Mike Weber (Vice President in charge of UDC PHOLED research and development), and Jung Ki-woon (Winner of the UDC Advanced Technology Award from Sungkyunkwan University).

Professor Kim Song Min’s research team develops next-generation XR ultra-precision positioning technology

Professor Kim Song Min’s research team develops next-generation XR ultra-precision positioning technology

Using ultra-precision positioning technology, a groundbreaking perception system has been developed for the Internet of Things (IoT) devices and robots, enabling precise control over their subtle movements. Furthermore, this technology establishes a connection between the virtual world, such as extended reality (XR), and the real world.

Professor Kim Song Min’s research team from the School of EE, has developed a state-of-the-art IoT positioning system that can simultaneously detect over 1,000 locations with a remarkable accuracy of 7mm from a record-breaking distance of 160 meters (0.35mm at 5 meters short range) using battery-free tags.

These wireless tags exhibits isolation from noise signals by having separate frequency domain, resulting in an astonishing signal quality improvement of over a million times. This innovative approach enables ultra-precision positioning.

By incorporating this technology, numerous IoT devices in extended reality (XR) environments can be controlled by subtle finger movements, which can greatly enhance the overall XR experience. Additionally, the system can simultaneously recognize over 1,000 tags within 0.5 seconds, which enables real-time manipulation of numerous devices.

This technology surpasses existing positioning systems in terms of operating range, accuracy, and scalability, which is very meaningful. In comparison to the current state-of-art indoor positioning technology, Ultra Wide Band (UWB), this system has 300 times the accuracy, 10 times the detection distance, and 100 times the scalability.

Unlike GPS-based outdoor positioning, which is limited to outdoor environments, this technology can be employed in various indoor and outdoor settings.

The tags in this system communicate by reflecting surrounding signals rather than generating their own wireless signals.

This principle, which is akin to that of a mirror, can reduce the energy required for signal generation, resulting in ultra-low power operation. As a result, the tags can be powered by sources such as solar panels or a single coin battery for over 40 years, making them suitable for massive operations.

The study, co-authored by Ph.D candidates Bae Kangmin and Moon Hangyeol from the School of EE, was presented at the prestigious international conference ACM MobiSys 2023. (Paper title: Hawkeye: Hectometer-range Subcentimeter Localization for Large-scale mmWave Backscatter)

Professor Kim Song Min stated, “This achievement is expected to not only benefit industries like smart factories but also be extensively applied in the private sector, such as XR (Extended Reality), enabling a widely applicable IoT technology for pervasive positioning awareness.”

[Professor Song Min Kim]

EE Professor Kim Joo-Young Developed A ChatGPT Core AI Semiconductor with A 2.4-fold Improvement in Price efficiency

EE Professor Kim Joo-Young Developed A ChatGPT Core AI Semiconductor with A 2.4-fold Improvement in Price efficiency

The ChatGPT released by OpenAI has captured global attention, and everyone is closely observing the changes this technology will bring out.

This technology is based on large language models (LLM), which represent an unprecedented scale of artificial intelligence (AI) models compared to conventional AI.

However, the operation of these models requires a significant number of high-performance GPUs, leading to astronomical computing costs.

KAIST (President: Lee Kwang-Hyung) announced that research team led by EE Professor Kim Joo-Young Kim has successfully developed an AI semiconductor that efficiently accelerates the inference operations of large language models, which play a crucial role in ChatGPT.

The developed AI semiconductor, named the ‘Latency Processing Unit (LPU),’ efficiently accelerates the inference operations of large language models. It incorporates a high-speed computing engine capable of maximizing memory bandwidth utilization and performing all necessary inference computations rapidly.

Additionally, it comes equipped built-in networking capabilities, making it easily expandable with multiple accelerators. This LPU-based acceleration appliance server achieved up to a 50% higher performance and approximately 2.4 times better performance-to-price ratio compared to a supercomputer based on the industry-leading high-performance GPU, NVIDIA A100.

This advancement holds the potential to replace high-performance GPUs in data centers that are experiencing a rapid surge in demand for generative AI services. This research was conducted by Professor HyperExcel Co., founded by Professor Kim Joo-Young and achieved the remarkable accomplishment of receiving the “Engineering Best Presentation Award” at the International Design Automation Conference (DAC 2023) held in San Francisco on July 12th (U.S. time).

DAC is a prestigious international conference in the field of semiconductor design, particularly showcasing global semiconductor design technologies related to Electronic Design Automation (EDA) and Semiconductor Intellectual Property (IP).

DAC attracts participation from renowned semiconductor design companies such as Intel, NVIDIA, AMD, Google, Microsoft, Samsung, TSMC, as well as top universities including Harvard, MIT, and Stanford.

Among the world’s notable semiconductor technologies, Professor Kim’s team stands out as the sole recipient of an award for AI semiconductor technology tailored for large language models.

This award acknowledges their AI semiconductor solution as a groundbreaking means to drastically reduce the substantial costs associated with inference operations for large language models on the global stage.

Professor Kim stated, “With the new processor ‘LPU’ for future large AI computations, I intend to pioneer the global market and take a lead over big tech companies in terms of technological prowess.”

(Note: The provided translation is an elaboration and summary of the original text for clarity and readability.)

DongA Science : 챗GPT 효율 높일 ‘AI 반도체’ 개발…국제학회서 ‘최고 발표상’ : 동아사이언스 (dongascience.com)

Professor Joo-Young Kim’s Research Team Published Article in CACM Magazine: “South Korea’s Nationwide Effort for AI Semiconductor Industry”

Professor Joo-Young Kim’s Research Team Published Article in CACM Magazine: “South Korea’s Nationwide Effort for AI Semiconductor Industry”

Recently, the research team led by Professor Joo-Young Kim published an article titled “South Korea’s Nationwide Effort for AI Semiconductor Industry” in CACM (Communications of the ACM), one of the leading monthly academic journals in the field of computer science.

In this article, Professor Joo-Young Kim’s research team provides an in-depth analysis of the national efforts for the AI semiconductor industry currently underway in South Korea. They thoroughly examine the multifaceted endeavors carried out by the government, industry, and academia.

The article sheds light on the government’s investment plans to establish a world-class semiconductor supply chain, the ambitious AI semiconductor projects of major companies such as Samsung Electronics and SK hynix, and the rise of startups like Furiosa, Rebellions, SAPEON, HyperAccel, OpenEdge, Mobilint, DeepX, and Telechips, which are developing AI accelerators for specific application areas.

Additionally, the article introduces the Semiconductor Systems Department at KAIST, as well as AISS and PIM research centers, and showcases various programs provided by IDEC for research support in chip design.

This article provides insight into South Korea’s development direction and achievements in the field of AI semiconductors, which combine strategic technological advancements at the national level and active participation from businesses. Its international dissemination holds significant meaning.

For those interested in exploring insights into the future of the AI semiconductor industry and upcoming technologies, we recommend reading this article.

Link: https://dl.acm.org/doi/10.1145/3587264

Professor Shim Hyun-Chul(Principal Investigators), Professor Kim Min-Jun, and Collaborative Research Team Develop World’s First Humanoid Pilot, “PiBot.”

Professor Shim Hyun-Chul(Principal Investigators), Professor Kim Min-Jun, and Collaborative Research Team Develop World’s First Humanoid Pilot, “PiBot.”

Recently, there has been a lot of attention on KAIST’s development of the humanoid pilot “PiBot” following the legendary pilot Maverick’s flights in the recent movie “Top Gun: Maverick.”

KAIST (President Lee Kwang-Hyung) announced on the 19th that they plan to develop a practical humanoid robot capable of directly piloting an aircraft based on understanding technical manuals written in natural language.

The collaborative research team, led by KAIST Professor Shim Hyun-Chul and including Professor Choo Jae-Gul, Professor Yoon Kuk-Jin, and Professor Kim Minjun, applied artificial intelligence and robotics technology to develop an “NLP-based humanoid pilot robot,” as part of the Future Challenge Project, which involves reading and comprehending pilot manuals written in general language.

The robot was able to sit in the cockpit of a conventional aircraft without any modification and directly operate various controls, showcasing a different approach from conventional aircraft’s autopilot systems or unmanned aerial vehicles that can only perform unmanned flights.

The pilot robot being developed by the research team can memorize and flawlessly operate the entire global Jeppesen Chart, which is impossible for human pilots.

It can also immediately respond by leveraging the recent breakthroughs in ChatGPT technology, recalling aircraft operation manuals and Quick Reference Handbook (QRH) procedures, and calculating real-time safe routes based on the aircraft’s flight status.

The robot can accurately perceive the internal and external conditions of the cockpit and the aircraft using the onboard cameras, precisely manipulate various switches, and control its robotic arms and hands with high precision even in highly vibrating aircraft environments.

Currently, the pilot robot is capable of performing all aircraft operations, including starting the engine, taxiing, takeoff, cruising, and landing, in a flight simulator. The research team plans to apply the pilot robot to an actual light aircraft for validation.

Professor Shim Hyun-Chul, the project leader, stated, “The humanoid pilot robot has high practicality and applicability, as it can immediately perform autonomous flights without any modification to existing aircraft. It can also operate a variety of devices, including aircraft, cars, and armored vehicles, making it highly useful in situations where there is a shortage of human resources.”

The ongoing project is supported by the Future Challenge Project from the Defense Science Institute (total funding of 5.7 billion KRW) and has been in development since 2022 through the collaboration of Professor Shim Hyun-Chul from the Department of Electrical and Electronic Engineering at KAIST (project leader), Professor Choo Jae-Gul from the AI Graduate School, Professor Yoon Kuk-Jin from the Department of Mechanical Engineering, and Professor Kim Min-Jun from the Department of Electrical and Electronic Engineering.

The project is expected to be completed in 2026 and explore commercialization plans for civilian and military applications.

Chosun Media : KAIST, 휴머노이드 파일럿 ‘파이봇’ 개발… “직접 항공기 조종해 비행 가능” (chosun.com)

Professor Insu Yun has received the Frontiers of Science Award at the ICBS (International Conference on Basic Science)

Professor Insu Yun has received the Frontiers of Science Award at the ICBS (International Conference on Basic Science).

[Professor Insu Yun]

On July 16th to July 28th, 2023, at the 1st International Congress of Basic Science (ICBS, homepage: https://www.icbs.cn/) held in Beijing, Professor Insu Yun received the Frontiers of Science Award in the field of cryptography and information security.

The event, which is the first international congress of basic science planned and hosted in China, will focus on three fundamental science fields: mathematics, theoretical physics, and theoretical computer and information science.

It is set to feature hundreds of lectures, conferences, and active exchange events. About 1,000 participants are expected to attend, including numerous scholars from the United States, and European countries, along with 8 Fields Medal laureates, 4 Turing Award laureates, and 1 Nobel Prize laureate, all gathering to promote cooperation and knowledge exchange.

As part of this inaugural event, the ICBS Frontiers of Science Award is presented to researchers who have demonstrated outstanding scientific value and creativity in their respective fields over the past five years.

Professor Insu Yun was honored with this award for his research presented at USENIX Security in 2018, titled “QSYM: A Practical Concolic Execution Engine Tailored for Hybrid Fuzzing,” earning him a prize of $25,000.

This research made significant contributions to the practical realization of hybrid fuzzing, a next-generation vulnerability detection technology, and received the Best Paper Award at the same conference.

The ICBS Frontiers of Science Award recognizes Professor Yun’s contributions to the advancement and progress of information security and showcases his recognition as one of the outstanding young researchers in this field.

Professor Seunghyup Yoo successfully unveils the highest level efficiency deep blue OLED (joint research from KAIST and Gyeongsang National University)

OLEDs are light-emitting devices that are being utilized as cutting-edge display technology, with various advantages such as clear image quality, thin profile, and the capability to fabricate flexible devices such as foldable or rollable displays.

In such applications, securing sufficient efficiency and lifespan of the red, green, and blue light sources that make up the three primary colors of light while also securing high color purity of the three primary colors is critical, but the technology to secure all these requirements in blue OLED devices is considered to be a big challenge.

Professor Seunghyup Yoo’s research team from the School of EE in collaboration with Professor Kim Yoon-hee’s research team from the Department of Chemistry at Gyeongsang National University succeeded in implementing a deep-blue organic light-emitting diode (OLED) device with the world’s highest level of efficiency.

Dr. Hyungseok Kim from Professor Yoo’s lab at KAIST (currently a visiting researcher from Kyushu University), Dr. Hyeong-jin Cheon from Gyeongsang National University (currently a visiting researcher at Imperial College London), and Donggyun Lee, a Ph.D. candidate from KAIST (in Professor Yoo’s lab), were the joint first authors of this study.

The research was published in the online version of the international journal ‘Science Advances’ on May 31, 2023. (Paper title: Toward highly efficient deep-blue OLEDs: Tailoring the multiresonance-induced TADF molecules for suppressed excimer formation and near-unity horizontal dipole ratio).

The team focused on the design of boron-based thermally activated delayed fluorescence materials, which are emerging as the next-generation emitters for the implementation of deep-blue OLED devices. These materials have the advantage of achieving excellent color purity, but due to their flat molecular structure, strong interactions between molecules can limit deep blue colors to low concentrations.

When the concentration of luminescent molecules is increased to secure sufficient efficiency for OLED devices, the issue of not being able to fully exploit the color purity advantage inherent in the emitters arises.

The research team not only simplified the synthesis process and improved the low yield compared to the conventional boron-based materials known to be very difficult to synthesize, but also successfully unveiled a molecular structure that can suppress intermolecular interactions from the perspective of molecular dynamics.

By implementing this through molecular design, the team solved the challenging issue of color purity and efficiency degradation. Unlike previous trials and errors that were carried out empirically, the research team established a comprehensive and analytical methodology, theoretically predicting structures that can lead to maximum efficiency, and successfully implemented a deep-blue OLED with more than 35% maximum external quantum efficiency by grafting the high-efficiency organic luminescent material they designed onto the device structure.

This is one of the world’s highest levels of efficiency for deep-blue OLED unit devices at this wavelength.

Professor Yoo commented, “Securing high-efficiency deep-blue OLED technology is one of the essential tasks in perfecting OLED displays as the ultimate technology, and this study is a good example that demonstrates the importance of systematic integrated research and collaboration between materials and device groups in solving challenges.”

Etnews Media : KAIST·경상대, 최고 수준 고효율 진청색 OLED 구현…35% 이상 최대 외부 양자효율 – 전자신문 (etnews.com)

Professor Youngik Sohn was honored with the “Minister’s Award” from the Ministry of Science and ICT at ‘Quantum Korea 2023’, the largest domestic quantum technology conference

On June 26, 2023, the Ministry of Science and ICT (MSIT) presented the “Minister’s Award” to professor Youngik Sohn during the opening ceremony of the ‘Quantum Korea 2023 Conference’ held at Dongdaemun Design Plaza (DDP) in Seoul.

Professor Sohn was recognized for his contributions to advancing the Artificial Intelligence (AI) semiconductor industry.

Prof. Sohn’s research on quantum repeater, a key technology for quantum communication, contributed to the selection of the world’s first major quantum technology flagship platform by a major corporation, and he is actively researching the development of general-purpose quantum computing hardware, which has recently gained prominence.

This event was an international gathering to explore the global research trends in quantum science and technology which is recognized as a game-changer in the future industry.

Renowned scholars in the field of quantum science and technology, including John Clauser, an American professor who received the Nobel Prize in Physics for elucidating quantum entanglement, Charles Bennett, a research fellow at IBM Research who invented quantum cryptography, and Peter Shor, an MIT professor whose “Shor’s Algorithm” became a crucial development for the quantum computer attended the opening ceremony.

Youngchang Joo, the Director of Science and Technology Innovation at the Ministry of Science and ICT, stated, “The government considers this year as the starting point for Korea’s quantum leap, and we are concentrating on national capabilities.”

He further emphasized, “We urge individuals to gather their capabilities and efforts so that Korea can dream bigger and take on greater challenges in the field of quantum science and technology.”

Professor Youngik Sohn, an expert in quantum information technology with over ten years of experience in quantum computing and communication research and development, currently serves as the director of the KAIST-Harvard International Quantum Technology Cooperation Center.

Quantum information science and technology are regarded as promising for the future, bringing about a paradigm shift in information processing technology, enabling more efficient computations and secure communication than conventional classical information systems.

[Awards Ceremonies]

Edail Media : “양자대도약 원년으로 퀀텀점프”···’퀀텀코리아’ 개막 (edaily.co.kr)

Development of transparent flexible OLED from school of EE Kyung Cheol Choi’s laboratory

Development of transparent flexible OLED from school of EE Kyung Cheol Choi’s laboratory

– Professor Kyung Cheol Choi’s research team in the School of Electrical and Electronic Engineering developed waterproof transparent flexible OLED using 2D MXene electrodes that withstands 6-hour washing

– Developed an environmentally sound MXene-based OLED display with high durability with applications in various fields such as automotive display, fashion, medical, safety, etc.

A research team led by Professor Choi Kyung-cheol from the School of EE, in collaboration with Dr. Lee Yong-hee’s team from the Institute for National Nanofab Center, has successfully developed a waterproof transparent flexible OLED that can display light and show the background even when exposed to water, using MXene nanotechnology.

Despite the advantages of MXene materials, such as high electrical conductivity, transparency, and large-scale production through solution processes, its use in high-performance electronic devices has been limited due to its susceptibility to degradation of electrical property, caused by moisture or water.

This prevented the development of a system in the form of a matrix that allows display of information. Professor Choi’s research team developed a moisture-resistant MXene-based OLED with long-term stability by employing an encapsulation strategy to prevent oxidation by moisture or oxygen.

The team firstly focused on analyzing the degradation mechanism of MXene’s electrical properties caused by moisture and then focused on designing an encapsulation layer.

The team designed a bilayer encapsulation structure by introducing moisture barrier and residual stress compensation technologies to provide flexibility. Additionally, they attached a thin plastic film with a thickness of several tens of micrometers on the top to enable underwater washing.

Through this research, the team developed MXene-based OLEDs in red (R), green (G), and blue (B) colors that achieve a brightness of over 1,000 cd/m2, which is visible to the human eye even in outdoor display conditions under sunlight. The red MXene-based OLED demonstrated a storage lifetime of 2,000 hours (70% brightness retention), an operational lifetime of 1,500 hours (60% brightness retention), and flexibility that can withstand more than 1,000 bending cycles with a low curvature radius of 1.5mm.

Moreover, the OLED maintained 80% of its brightness even after being immersed in water for six hours. The team also demonstrated the production of a transparent display capable of displaying characters or patterns using patterning techniques to create a passive-matrix form of MXene-based OLEDs.

So Yeoung Jeong , a doctoral candidate in Professor Choi’s research team who led this research, stated, “We focused on designing encapsulation structures and processes suitable for MXene OLEDs to improve their reliability.”

She added, “By producing MXene-based OLEDs in a matrix type, we have laid the foundation for the application of MXene in the field of transparent displays, allowing simple character or pattern display.”

Professor Choi stated, “This research not only provides guidelines for the application of MXene in various electronic components but also applicable to various fields such as vehicle displays, fashion, and functional clothing, where transparent flexible displays are required. In order to widen the technology gap with China in OLED technology, continuous development of new OLED technologies is necessary.”

The research results, led by Dr. Jeong So-young, a doctoral candidate in Professor Choi’s research team, and supported by the Leading Research Center program of the Ministry of Science and ICT and the National Research Foundation of Korea, were published online in the prestigious international journal “ACS Nano” on April 5th and appeared as the front cover on June 13th.

The title of the paper is “Highly Air-Stable, Flexible, and Water-Resistive 2D Titanium Carbide MXene-Based RGB Organic Light-Emitting Diode Displays for Transparent Free-Form Electronics” (ACS Nano, IF 18.0).

Archives: 연구 > 연구성과

Ph.D. Woochan Lee, Ph.D. Candidate Hyeonwook Chae and Sangin Hahn, Integrated Master’s and Doctoral Program Student (advisor Seunghyup Yoo) won Best Student Paper Award at Optica APC 2023 Conference

Professor Yoo Seunghyup’s Lab graduate Dr. Jee Hoon Sim awarded the ‘UDC Innovative Research Award’ at the 2023 International Meeting on Information Display (IMID)

Professor Kim Song Min’s research team develops next-generation XR ultra-precision positioning technology

EE Professor Kim Joo-Young Developed A ChatGPT Core AI Semiconductor with A 2.4-fold Improvement in Price efficiency

Professor Joo-Young Kim’s Research Team Published Article in CACM Magazine: “South Korea’s Nationwide Effort for AI Semiconductor Industry”

Professor Shim Hyun-Chul(Principal Investigators), Professor Kim Min-Jun, and Collaborative Research Team Develop World’s First Humanoid Pilot, “PiBot.”

Professor Insu Yun has received the Frontiers of Science Award at the ICBS (International Conference on Basic Science)

Professor Seunghyup Yoo successfully unveils the highest level efficiency deep blue OLED (joint research from KAIST and Gyeongsang National University)

Professor Youngik Sohn was honored with the “Minister’s Award” from the Ministry of Science and ICT at ‘Quantum Korea 2023’, the largest domestic quantum technology conference

Development of transparent flexible OLED from school of EE Kyung Cheol Choi’s laboratory

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