Conference Presentations

Yeomin Jeon, Donghyun Hwang, Jimin Park, Yunseo Lee, and Chang-Kyu Kim, “Hydrogen Gas Sensor with Self-heating Structure Using Pd-Ni Alloy Thin Film,” The Korean Institute of Electrical and Electronic Material Engineers (KIEEME) Annual Summer Conference, SS-12 (2025)

Dongheon Choi, Hayeon Cho, Seungho Lee, Taehwan Jeong, Hyunbae Lee, and Chang-Kyu Kim, “Development of Optical MEMS Microphone for MRI Applications,” The Korean Institute of Electrical and Electronic Material Engineers (KIEEME) Annual Summer Conference, CD-18 (2025)

Chanho Park, Tae-Un Kim, Yurim Park, Kyoungdeog Nam, Chan Ho Seo, Chang-Kyu Kim, and Inho Kim, “Development of Hydrogen Sensors with CNT Underlayer and TiO2 Thin Film: Achieving Lower Temperature Operation and Wide Detection Range,” Spring Conference of the Korean Sensors Society, P06-30 (2025)

Chan Ho Seo, Chan Ho Park, Inho Kim, and Chang-Kyu Kim, “Conductometric Hydrogen Gas Sensor Using Platinum Wire,” Spring Conference of the Korean Sensors Society, P06-31 (2025)

Inhun Cho, Oleksiy Kovalchuk, Bowon Ryu, Sofiya Karankova, Myungjin Kang, Chang-Kyu Kim, In-Ho Kim, Soo Jin Kim, Hyowon Moon, and Yong-Won Song, “Conformal graphene-enhanced nonlinear optical fiber interfaces for integrated optical devices,” Photonics Conference, TP-IV.08 (2025) [Best Poster Award]

Chanho Park, Chanho Seo, Kyungdeog Nam, Chang-Kyu Kim, and Inho Kim, “Development of hydrogen gas sensor for wide detection range with low operating temperature,” The 15th Asian Conference on Chemical Sensors, P21 (2024)

Chan Ho Seo, Chan Ho Park, Chang-Kyu Kim, “Thermally conductive hydrogen gas senor utilizing carbon fiber,” The 15th Asian Conference on Chemical Sensors, P19 (2024)

Yong-Jin Kim, Ji-Eun Yeom, Chang-Yeon Hong, Min Kwon, and Chang-Kyu Kim, “MEMS Hot-wire Anemometer Utilizing Platinum Wire,” The Korean Institute of Electrical and Electronic Material Engineers (KIEEME) Annual Autumn Conference, SS-17 (2024)

Ji-eun Yeom, Min Kwon, Yong-Jin Kim, Chang-Yeon Hong, and Chang-Kyu Kim, “MEMS Hot-wire Anemometer Using Platinum Wire,” Fall Conference of the Korean Sensor Society, P04-02 (2024)

Changmin Lee, Hoonhee Jang, Seyun Kim, Taehyeon Kim, Suin Yun, and Chang-Kyu Kim, “Low Temperature Hydrogen Gas Sensor Using Multi-Walled Carbon Nanotube Yarn,” The Korean Institute of Electrical and Electronic Material Engineers (KIEEME) Annual Summer Conference, CD-09 (2024) [Letuinedu Special Prize]

Young Han Lee, Hyeong Joon Eoh, Seung Woo Choi, Chanho Park, Chanho Seo, Kyungdeog Nam, Inho Kim, and Chang-Kyu Kim, “Hydrogen gas sensor using unidirectionally aligned multi-walled carbon nanotubes,” Spring Meeting of European Materials Research Society (E-MRS), 01738 (2024)

Chanho Park, Kyoungdeog Nam, Inho Kim, and Chang-Kyu Kim, “Carbon-based hydrogen-in-oxygen detection sensor operating at room temperature,” Spring Meeting of the Korean Hydrogen & New Energy Society, 90 (2024)

Chanho Park, Kyoungdeog Nam, Inho Kim, and Chang-Kyu Kim, “Self-activated Carbon and TiO2 Hybrid Hydrogen Sensor Operating at Room Temperature,” Spring Conference of the Korean Sensor Society, P05-66 (2024)

Seung Ju Yoon, Da In Song, Jungmin Lee, Myung-Ki Kim, Chang-Kyu Kim, and Yong-Hee Lee, “Plasmonic Nanoantennas for Real-Time Single-Nanoparticle Monitoring,” 11th Conference of the Korea Society of LEDs and Optoelectronics, II-3 (2024) [Invited]

Chanho Park, Kyungdeog Nam, Chang-Kyu Kim, and Inho Kim, “Effect of Film Thickness on Hydrogen Sensing Properties of Sputtered TiO2 Thin Film,” The 14th Asian Conference on Chemical Sensors, P2C-05 (2023)

Chanho Park, Chanho Seo, Kyungdeog Nam, Inho Kim, Chang-Kyu Kim, “Hydrogen Detection in Oxygen Atmosphere for Monitoring of Crossover in Water Electrolyzer,” Fall Meeting of the Korean Hydrogen & New Energy Society, 82 (2023)

Chanho Park, Chanho Seo, Kyungdeog Nam, Inho Kim, and Chang-Kyu Kim, “A Study on selective hydrogen detection characteristics and signal reliability improvement depending on SnO2 thin film thickness,” Spring Meeting of the Korean Hydrogen & New Energy Society, 82 (2023)

Musong Park, Yujin Yim, and Chang-Kyu Kim, “Optical refractive index sensor using high contrast grating,” Fall Conference of the Korean Sensor Society, P01-18 (2023) [Best Poster Award]

Yujin Yim, Musong Park, Chanho Seo, and Chang-Kyu Kim, “Design and analysis of piezoelectric MEMS multi-axis force/torque sensor,” Fall Conference of the Korean Sensor Society, P01-20 (2023)

Young Han Lee, Hyeong Joon Eoh, Seung Woo Chol, Chanho Park, Chanho Seo, Kyungdeog Nam, Jea Yun Lee, Kyeong Nam Lim, Inho Kim, and Chang-Kyu Kim, “Low power consumption hydrogen gas sensor using palladium-coated multi-walled carbon nanotube,” Fall Conference of the Korean Sensor Society, P06-20 (2023)

Chanho Park, Kyungdeog Nam, Inho Kim, and Chang-Kyu Kim, “A Comperative Study on Metal Oxide Semiconductors for Thin Film Charactoristics and Their Hydrogen Detection Properties,” Fall Conference of the Korean Sensor Society, P06-24 (2023)

Yu-jin Jeon, Yu-been Son, SI-yun Yu, Su-hyun An, In-hun Cho, Chan-ho Seo, Chan-ho Park, Kyung-deog Nam. In-ho Kim, and Chang-Kyu Kim, “Graphene-based hydrogen gas sensor using drop and dry method,” Fall Conference of the Korean Sensor Society, P06-28 (2023) [Best Poster Award]

Seung Ju Yoon, Da In Song, Jungmin Lee, Myung-Ki Kim, Yong-Hee Lee, and Chang-Kyu Kim, “Trapping and monitoring of single nanaoparticle using a metallic nanoantenna,” SPIE Optics+Photonics, 12198-59 (2022) [Invited]

Young Min Jeong, Hyeon Jin Bae, Yu Jin Shim, Hyun Joo Lee, Jeong Eun Choi, Kyungdeog Nam,Inho Kim, and Chang-Kyu Kim, “Hydrogen Detecting Self-Heating Gas Sensor Using Single Carbon Fiber,” Fall Conference of the Korean Sensor Society, P04-20 (2022)

Seung Ju Yoon, Whi-Min Kim, Chang-Kyu Kim, and Yong-Hee Lee, “Kramers Hopping of Nanoparticle in Plasmonic Double-Well Potential,” SPIE Photonics West, 11289-28 (2020)

Jae-Sung Kim, Ki-Rhyong Kim, and Chang-Kyu Kim, “Silicon-Based Fully-Integrated Fiber Optic Receiver for In-Vehicle Networks,” Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices (AWAD), P-43 (2019)

Chang-Kyu Kim, and Hyunjin Kim, “Horticultural lighting module with improved photosynthetically active radiation,” International Conference on Innovation Convergence Technology (ICICT), P8-040 (2018)

Sang Woo Lee, Hoe Joon Kim, Chang-Kyu Kim, Su Jung Lee, and Yong Jun Park, “Developed Air Driver using Compressed Air,” Korean Society of Manufacturing Technology Engineers (KSMTE) Annual Autumn Conference, OP20-005 (2018)

Sangyoon Han, Tae Joon Seok, Chang Kyu Kim, Richard S. Muller, and Ming C. Wu, “Multicast 4x20 Silicon Photonic MEMS Switches,” The annual Conference on Lasers and Electro-Optics (CLEO), STu1F.1 (2015)

Junwoo Lee, Jaewoo Lee, Ju-Hyun Jeon, SungQ Lee, Woo-Seok Yang, and Chang-Kyu Kim, “Fabrication and Characterization of a LPCVD TEOS film for MEMS sacrificial layers based on anhydrous HF gas-phase etching,” The Institute of Electronics and Information Engineers (IEIE) Fall Conference, CFP-044 (2015)

Jun Park, and Chang-Kyu Kim, “Metal diaphragm pressure sensor with optimized gauge patterns,” The Korean Society of Mechanical Engineers (KSME) Spring Conference, 13MN035 (2013)

Jaehwan Lim, Boram Hwang and Chang-Kyu Kim, “Development of electrostatic energy harvester with out of-plane overlap driving mode,” 15th Korea MEMS (KMEMS) Conference, SP-3-41 (2013)

Bo-Ram Hwang, Jae-Hwan Lim and Chang-Kyu Kim, “Electrostatic MEMS energy harvester utilizing vibration in the vertical direction,” International Conference of Manufacturing Technology Engineers (ICMTE), p.115 (2012)

Jun Park, Eun-Byeol Song, Sung-Hyun Park and Chang-Kyu Kim, “Effect of a pattern shape on the output characteristics of piezoresistive strain gauge,” International Conference of Manufacturing Technology Engineers (ICMTE), p.211 (2012)

Jae-Hwan Lim, Bo-Ram Hwang and Chang-Kyu Kim, “Energy conversion efficiency of MEMS electrostatic harvester,” International Conference of Korea Institute of Information and Communication Engineering (ICKIICE), p.57 (2012)

Kyung-Sun Yoo, In-Ho Jung, Byoung-Jo Jung, Chang-Kyu Kim, and Dong-Hun Hyun, “The study on electric heater rod using nano surface heater,” Korean Society of Manufacturing Technology Engineers (KSMTE) Spring Conference, p. 258 (2012)

Jun Park, Eun-Byeol Song, Sung-Hyun Park, and Chang-Kyu Kim, “Effect of pattern shape of strain gauge to output characteristics of pressure sensor,” 14th Korea MEMS (KMEMS) Conference, FP-2-75 (2012)

Bo-Ram Hwang, Jae-Hwan Lim, Chang-Kyu Kim, Won-sik Oh, Jong-Heon Yoon, Sun-Keun Choi, Kwang-Pyo Hong, and Jae-Hee Park, “Simulation of energy conversion efficiency of electrostatic MEMS energy harvester,” 14th Korea MEMS (KMEMS) Conference, FP-1-51 (2012)

Chang-Kyu Kim, and Dong-Hun Hyun, “The formation of micro metal patterns using shadow mask,” Korean Society of Manufacturing Technology Engineers (KSMTE) Spring Conference, pp. 98-99 (2011)

Chang-Kyu Kim, Geun-Ho Yoo, Chang-Han Je, Sung-Hye Chung, and Chang-Auck Choi, “A Z-axis accelerometer using comb structures with different heights,” 11th Korea MEMS (KMEMS) Conference, S02709 (2009)

Chang-Kyu Kim, and Geun-Ho Yoo, “Development of transparent anti-fog window device using ITO,” Optical Society of Korea Summer Meeting, F2F-VII4 (2008)

Chang-Kyu Kim, Chang-Han Je, and Chang-Auck Choi, “Z-axis accelerometer,” 10th Korea MEMS (KMEMS) Conference, S03708 (2008)

Chang-Kyu Kim, Myung-Lae Lee, Chang-Auck Choi, and Chi-Hoon Jun, “GaAs-based MEMS wavelength tunable optical filter,” 6th Korea MEMS (KMEMS)  Conference, O2-4 (2004)

Chang-Kyu Kim, Myong-Lae Lee, Chi-Hoon Jun, Yong-Sung Eom, and Youn-Tae Kim, “MEMS tunable filter with 69nm tuning range,” Optical Society of Korea Annual Meeting, FDV-47 (2004)

Dae-Sung Song, Yong-Jae Lee, Keum-Hee Lee, Se-Heon Kim, Hong-Gyu Park, Chang-Kyu Kim, and Yong-Hee Lee, "Photonic-crystal vertical-cavity surface-emitting lasers," Optical Society of Korea Annual Meeting, FG-22 (2003) [Invited]

Chang-Kyu Kim, Myong-Lae Lee, Chi-Hoon Jun, Youn-Tae Kim, “47 nm Tuning of Thermally Actuated Fabry-Perot Tunable Filter with Very Low Power Consumption,” IEEE/LEOS Optical MEMS 2003, MC8 (2003)

Dae-Sung Song, Se-Heon Kim, Hong-Gyu Park, Chang-Kyu Kim and Yong-Hee Lee, "Single-mode photonic crystal vertical cavity surface emitting laser", The annual Conference on Lasers and Electro-Optics (CLEO), CTuW1 (2002)

Dae-Sung Song, Chang-Kyu Kim and Yong-Hee Lee, “Double-fused long-wavelength VCSELs,” Optical Society of Korea Annual Meeting, FA-V15 (2001)

Chang-Kyu Kim and Yong-Hee Lee, “Optical gain characteristics of GaInNAs quantum well,” Optical Society of Korea Summer Meeting, FE-V36 (2001)

Chang-Kyu Kim and Yong-Hee Lee, “Effects of Indium and Nitrogen compositions in GaInNAs quantum wells,” Pacific Rim Conference on Laser and Electro-Optics (CLEO-PR), P2.33 (1999)

Kyu-Sang Kim, Kyoung-Ho Ha, Il-Young Han, Chang-Kyu Kim, and Yong-Hee Lee, “Intermixing of GaAs quantum well using buried Al-oxide layer,” Pacific Rim Conference on Laser and Electro-Optics (CLEO-PR), P2.32 (1999)

Hyun-Woo Song, Dae-Sung Song, Il-Young Han, Chang-Kyu Kim, Han-Youl Ryu, and Yong-Hee Lee, “64°C continuous-wave operation of 1.5-µm vertical-cavity surface-emitting laser with AlxOy/GaAs mirror,” Pacific Rim Conference on Laser and Electro-Optics (CLEO-PR), ThD2 (1999)

Hyun-Woo Song, Dae-Sung Song, Il-Young Han, Chang-Kyu Kim, and Yong-Hee Lee, "Optically pumped 1.5-µm VCSELs with AlxOy/GaAs mirrors,” 14th Conference on Waves and Lasers, FB-V16 (1999)

Hyun Don Jung, Myung-Duk. Kim, Minhyon Jeon, Tae Il Kim, Chang-Kyu Kim, and Yong-Hee Lee, “Growth and characterization of GaAsN layer grown on (001) GaAs substrate by MBE,” 78th Korean Physical Society Fall Meeting, Da-2 (1998)

Hyun-Woo Song, Chang-Kyu Kim, Dae-Sung Song, Il-Young Han, and Yong-Hee Lee, "Optically-pumped 1.54-µm vertical-cavity surface-emitting lasers fabricated by wafer fusion,” 15th Optics and Quantum Electronics Conference, TC-V13 (1998)

Chang-Kyu Kim and Yong-Hee Lee, “Simulation of the optical gain in GaInNAs quantum wells,” 13th Conference on Waves and Lasers, II-15 (1998)

J. H. Ser, H. E. Shin, H. W. Song, C. K. Kim, Y. H. Lee and Y. K. Oh, "Modulation characteristics of 2x8 array of 780-nm oxidized VCSELs,” 2nd Optoelectronics & Communications Conference, 9C4-4 (1997)

Hyun-Woo Song, Chang-Kyu Kim, and Yong-Hee Lee, "Long-wavelength vertical-cavity surface-emitting laser,” 70th Korean Physical Society Fall Meeting (1995)