Heui Jae Pahk

Heui Jae Pahk
Pahk in 2026
Born1961 (age 64–65)
OccupationsEngineer, academic and entrepreneur
Academic background
EducationB.S., Mechanical Design and Production Engineering
M.S., Mechanical Design and Production Engineering
Ph.D., Mechanical Engineering
D.Eng., Mechanical Engineering
Alma materSeoul National University
University of Manchester,UK
Academic work
InstitutionsSeoul National University

Heui Jae Pahk (Korean: 박희재; born 1961) is an engineer, academic, and entrepreneur. He is a full professor of mechanical engineering and an SNU-HD Infra-core Endowed Professor at Seoul National University.

Pahk's research is centered on engineering, where he has worked on advanced manufacturing, precision engineering, metrology, mechatronics, and ultraprecision measurement systems. He is a recipient of the Order of Industrial Merit from the President of the Republic of Korea in 2004 and the IR52 Jang Young Sil Awards from the Korean Minister of Science and Technology in 2005 and 2013.

Education

Pahk completed his Bachelor's and Master's in Mechanical Design and Production Engineering at Seoul National University in 1983 and 1985, respectively. Following this, he completed his Ph.D. in 1990 and subsequently a D.Eng. from the University of Manchester in 2019.[1]

Career

Pahk's career began as an assistant professor at the Pohang University of Science and Technology from 1991 to 1993. Afterwards, he joined the Seoul National University, where he was appointed assistant professor in 1993, later becoming associate professor in 1997 and full professor in 2002. In 2022, he was appointed an SNU-HD Infra-core Endowed Professor.[2] He has also held administrative roles at Seoul National University, where he founded SNU Precision,[3] and was its CEO until 2017.[2] Since 2000, he has been director of the Industry-University Research Center, and since 2020, has been the chief of the AI Valley Bureau and director of the Institute of Advanced Machinery.[2]

Pahk was the National CTO[4] and the president of the Office of Strategic R&D Planning of the Korean Government from 2013 to 2017.[2] He established the Pahk Heui Jae Creative Space (박희재 창의공간),[5] and has also donated stocks to the College of Engineering at SNU.[6]

Research

Pahk's research and patents center on advanced manufacturing, particularly precision engineering, metrology, mechatronics, and ultraprecision measurement systems. His work has addressed ultra-precision positioning,[7] and has contributed to the development of high-accuracy[8] positioning systems,[7] techniques for assessing volumetric and parametric errors in multi-axis machines,[9] and measurement approaches that improve thin-film thickness estimation through combined interferometric and spectroscopic analysis.[10] His research has also extended to modeling thermal errors in machine spindles[11] and designing micro-positioning stages[12] and hybrid vibration-isolation systems.[13]

In optical and measurement science, Pahk has developed methods that integrate interferometry and reflectometry for improved characterization of thin films and surface profiles,[14] as well as approaches that enhance depth measurement accuracy in white-light interferometry.[15] He has created inspection systems for semiconductor structures such as through-silicon vias[16] and designed imaging frameworks that simplify defect detection through coordinated multi-camera acquisition.[17] He commercialized[3] and along with his team, developed an in-line measurement technology capable of characterizing extremely fine three-dimensional features across large-area TFT-LCDs with nanometer-level precision.[18]

Awards and honors

  • 2004 – Order of Industrial Merit, President of the Republic of Korea[19]
  • 2005 – IR52 Jang Young Sil Award, Minister of Science and Technology[20]
  • 2008 – Certificate of World Top Class Products, Minister of Industry & Energy[21]
  • 2013 – IR52 Jang Young Sil Award, Minister of Science and Technology[22]
  • 2014 – Global CEO Award, Forbes Korea[23]
  • 2014 – Full Member, National Academy of Engineering of Korea[24]
  • 2014 – Tower of US$70 Million Export, President of the Republic of Korea[25]
  • 2020 – Award of Development and Contribution, Seoul National University[26]

Selected articles

  • Pahk, H.J.; Kim, Y.H.; Hong, Y.S.; Kim, S.G. (1993). "Development of Computer-Aided Inspection System with CMM for Integrated Mold Manufacturing". CIRP Annals - Manufacturing Technology. 42 (1): 557–560. doi:10.1016/S0007-8506(07)62508-6.
  • Ahn, K.G.; Pahk, H.J.; Jung, M.Y.; Cho, D.W. (1996). "A Hybrid-Type Active Vibration Isolation System Using Neural Networks". Journal of Sound and Vibration. 192 (4): 793–805. doi:10.1006/jsvi.1996.0218.
  • Pahk, Heui Jae; Kim, Young Sam; Moon, Joon Hee (1997). "A New Technique for Volumetric Error Assessment of CNC Machine Tools Incorporating Ball Bar Measurement and 3D Volumetric Error Model". International Journal of Machine Tools and Manufacture. 37 (11): 1583–1596. doi:10.1016/S0890-6955(97)00029-1.
  • Pahk, Heui Jae; Lee, Dong Sung; Park, Jong Ho (2001). "Ultra Precision Positioning System for Servo Motor–Piezo Actuator Using the Dual Servo Loop and Digital Filter Implementation". International Journal of Machine Tools and Manufacture. 41 (1): 51–63. doi:10.1016/S0890-6955(00)00061-4.
  • Pahk, H.; Lee, S.W. (2002). "Thermal Error Measurement and Real Time Compensation System for the CNC Machine Tools Incorporating the Spindle Thermal Error and the Feed Axis Thermal Error". The International Journal of Advanced Manufacturing Technology. 20 (7): 487–494. doi:10.1007/s001700200182.

References

  1. ↑ "Pahk, Heui Jae". me.snu.ac.kr. Retrieved November 14, 2025.
  2. 1 2 3 4 "Heui Jae Pahk, Professor Emeritus". metrol.snu.ac.k. Retrieved January 2, 2026.
  3. 1 2 "국내 1호 교수 창업' 박희재 정밀기계설계공동연구소장". hankyung.com. Retrieved December 16, 2025.
  4. ↑ "Department News". snu.ac.kr. Retrieved December 16, 2025.
  5. ↑ "Park Hee-jae Creative Space, Department of Mechanical Engineering, Seoul National University". creative.snu.ac.kr. Retrieved December 16, 2025.
  6. ↑ "'Laboratory Venture' Seoul National University Professor Park Hee-jae Contribution 8 Billion". donga.com. Retrieved December 16, 2025.
  7. 1 2 Chang, Qingbing; Chen, Weishan; Zhang, Shijing; Deng, Jie; Liu, Yingxiang (June 2024). "Review on Multiple‐Degree‐of‐Freedom Cross‐Scale Piezoelectric Actuation Technology". Advanced Intelligent Systems. 6 (6): 2. doi:10.1002/aisy.202300780.
  8. ↑ Elfizy, A.T.; Bone, G.M.; Elbestawi, M.A. (February 2005). "Design and control of a dual-stage feed drive". International Journal of Machine Tools and Manufacture. 45 (2): 153. doi:10.1016/j.ijmachtools.2004.07.008.
  9. ↑ Linares, Jean-Marc; Chaves-Jacob, Julien; Schwenke, Heinrich; Longstaff, Andrew; Fletcher, Simon; Flore, Jakob; Uhlmann, Eckart; Wintering, Jens (July 2014). "Impact of measurement procedure when error mapping and compensating a small CNC machine using a multilateration laser interferometer". Precision Engineering. 38 (3): 578. doi:10.1016/j.precisioneng.2014.02.008.
  10. ↑ "Apparatus for measuring thickness". patents.google.com. Retrieved December 9, 2025.
  11. ↑ Liu, Teng; Gao, Weiguo; Zhang, Dawei; Zhang, Yifan; Chang, Wenfen; Liang, Cunman; Tian, Yanling (January 2017). "Analytical modeling for thermal errors of motorized spindle unit". International Journal of Machine Tools and Manufacture. 112: 53. doi:10.1016/j.ijmachtools.2016.09.008.
  12. ↑ "Modelling and Analysis of Three-degree of Freedom Micro-positioning Stage" (PDF). nacomm2011.ammindia.org. Retrieved November 17, 2025.
  13. ↑ "Active vibration isolation of diesel engines in ships". digital.library.adelaide.edu.au. Retrieved November 17, 2025.
  14. ↑ Wang, Yunzhi; Xie, Fang; Ma, Sen; Dong, Lianlian (June 2017). "Review of surface profile measurement techniques based on optical interferometry". Optics and Lasers in Engineering. 93: 167. doi:10.1016/j.optlaseng.2017.02.004.
  15. ↑ Li, Xiangjie; Sui, Xinqi; Kuang, Dengfeng (28 August 2025). "Fast and accurate measurement of high aspect ratio MEMS trench array with optical lattice illumination". Microsystems & Nanoengineering. 11 (1). doi:10.1038/s41378-025-01017-y. PMC 12394687.
  16. ↑ "Interferometer for TSV measurement and measurement method using same". patents.google.com. Retrieved December 9, 2025.
  17. ↑ "Optical inspection system, and an inspection method for inspecting objects in which the said system is used". patents.google.com. Retrieved December 9, 2025.
  18. ↑ "Significant improvement in TFT-LCD performance and productivity... Professor Park Hee-jae of Seoul National University". hankyung.com. Retrieved December 23, 2025.
  19. ↑ "[중소기업 기술혁신대전] 박희재대표 기업인부문 은탑훈장". Retrieved 12 January 2026.
  20. ↑ "[IR52 장영실상] 고품질 TFT-LCD생산 기여". Retrieved 12 January 2026.
  21. ↑ "세계일류상품 인증 에스엔유 site:www.motie.go.kr". Retrieved 12 January 2026.
  22. ↑ "2013 년 01 주차 장영실상 수상제품". Retrieved 12 January 2026.
  23. ↑ "2014 Forbes 최고경영자 대상 총론".
  24. ↑ "한국공학한림원 신입 정회원 30인 발표". Retrieved 12 January 2026.
  25. ↑ "에스엔유, 7천만불 수출의 탑 수상 - 파이낸셜뉴스". Retrieved 12 January 2026.
  26. ↑ "박희재 교수, 서울대 '제13회 발전공로상' 수상". Retrieved 12 January 2026.
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