Poziv na predavanje: Gas Sensor Technologies: Trends, Challenges, and Opportunities

Sažetak

This lecture offers a broad perspective on the evolution, current state, and future directions of gas sensor technologies, structured around five thematic acts. We open by surveying the global gas sensor market — projected to grow from $1.78B (2025) to $3.59B (2033) at a CAGR of 8.9% — driven by converging demands in industrial safety, environmental monitoring, medical breath diagnostics, electric vehicle battery safety, and smart agriculture. A comprehensive overview of 21 sensor types is then presented, spanning catalytic, electrochemical, optical, acoustic, and resistance-type metal oxide (MOx) platforms, accompanied by a historical timeline tracing landmark developments from the biological canary (~1900) through Taguchi's commercial MOx sensor (1968) to MXene and AI-assisted sensing (2025). Drawing on an analysis of 22 landmark gas sensor papers published in Nature, Nature Materials, and Nature Nanotechnology over four decades, we extract key lessons for the field — notably that paradigm-shifting breakthroughs consistently combine a genuine scientific "first" with biological or medical relevance and a scalable materials platform. Representative research achievements from the Gas Sensors Laboratory at Hanyang University are then highlighted, including heterojunction-engineered MOx nanofibers, defect engineering via ion beam irradiation, phase-transformation-based H₂S detection, MXene/2D TMD room-temperature sensors, and MOF-derived sensing materials. The lecture concludes by identifying the most pressing technical challenges — selectivity in real air, long-term stability, power consumption, and standardization — alongside six major emerging opportunities: AI-integrated electronic nose systems, non-invasive breath diagnostics, climate and net-zero monitoring, EV battery safety, self-powered IoT sensors, and quantum/nano sensing, with a convergence vision of defect engineering + 2D/MXene materials + artificial intelligence as the path toward next-generation wearable breath diagnostic platforms.

Životopis predavača

Hyoun Woo Kim is a Professor in the Division of Materials Science and Engineering at Hanyang University, Seoul, Korea, where he leads the Gas Sensors Laboratory. He received his Ph.D. from MIT and subsequently worked as a research engineer at Samsung Semiconductor Research Center, where he resolved a critical platinum etching challenge in DRAM manufacturing processes and filed international patents in five countries, before joining academia. His research spans metal oxide nanostructures, thin film gas sensors, defect engineering via ion beam irradiation, catalytic functionalization, and phase-transformation phenomena, achieving outstanding sensing performance toward a wide range of target gases as well as world-record low power consumption in self-heated nanowire sensor systems. He has published over 530 SCI(E) international journal papers — including 76 papers in Sensors and Actuators B: Chemical alone — with a total citation count exceeding 19,000, and has co-founded a technology company engaged in the commercialization of leakage detection sensors for industrial applications. Professor Kim currently serves as Senior Vice President of the Korean Sensors Society (2026) and President-Elect (2027), and has received numerous honors including the HYU Academic Award, the LS Academic Award, and commendations from the Ministers of Education, Science and ICT, and Agriculture, reflecting the broad societal impact of his engineering achievements.