Name Jong G. Ok
Position professor
Tel +82-2-970-9012
Fax 02-979-7032
E-mail jgok@seoultech.ac.kr
Biography
• 2013 Ph.D., Mechanical Engineering, University of Michigan
• 2007 M.S., Mechanical and Aerospace Engineering, Seoul National University
• 2002 B.S., Mechanical and Aerospace Engineering, Seoul National University
Careers
• 2014- Assistant Professor, Department of Mechanical & Automotive Engineering, Seoul National University of Science & Technology
• 2013-14 Research Staff, Samsung Advanced Institute of Technology, Samsung Electronics, co., ltd.
• 2013 Research Fellow, Department of Electrical Engineering and Computer Science, University of Michigan
• 2008-13 Research Assistant, Department of Mechanical Engineering, University of Michigan
• 2007-08 Departmental Fellow, Department of Mechanical Engineering, University of Michigan
• 2003-05 System Engineer, Technical Consultant, ADA Infotech, co., ltd.
• 2002-03 Solution Engineer, NuriInfos, co., ltd.
Research Areas
"Easier manufacturing of innovative solutions via large-scale assembly of small-scale functional building blocks"

1. Nanomanufacturing: Nanoimprinting, Roll-to-Roll Processing, Seamless and template-free nanopatterning
2. Carbon nanomaterials: Controlled and scalable manufacturing of carbon nanotubes (CNTs) and graphene
3. Hybrid nanoarchitectures: Multidimensional assembly of complementary nanomaterials (e.g. MOx + CNTs)

• Applications: Flexible electronics, Large-area photonic and sensing arrays, Energy harvesting and conversion

• Convergence of traditional and cutting-edge protocols:
  - Rolling/forging/pullout of nanoscale workpieces
  - Rolling + Photolithography
  - Electrical Discharge Machining (EDM) of CNTs, etc.

Please find more details regarding focused themes at: http://www.oknano.org/xe/research_ft
Teaching
• Special Manufacturing Process (graduate) (9371021): 2015-1
• Automotive CAD (182026): since 2015-1
• Automotive Drawing (182016): since 2014-2
• Engineering Design Process (182001): since 2014-2
• Elementary Shop Practice (182015): 2014-2

Lecture Board: http://www.oknano.org --> TEACHING
Journal Papers
- Variable-focus optoacoustic lens with wide dynamic range and long focal length by using a flexible polymer nano-composite membrane, ULTRASONICS, vol.117 pp.106545~, 2021
- Carbon nanotube-mediated three-dimensional vanadium oxide nanoarchitectures with tunable morphology and translatable functionality, CERAMICS INTERNATIONAL, vol.47 No.22 pp.32342~32348, 2021
- Experimental Demonstration of a Stacked Hybrid Optoacoustic-Piezoelectric Transducer for Localized Heating and Enhanced Cavitation, MICROMACHINES, vol.12 No.10 pp.1268~, 2021
- Solution-Processable, Ag-Sandwiched Nanotube-Coated, Durable (SAND) Architecture Realizing Anti-breaking Cyclic Heating on Arbitrary Substrates, INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY, 2021
- Size-Selective Sub-micrometer-Particle Confinement Utilizing Ionic Entropy-Directed Trapping in Inscribed Nanovoid Patterns, ACS NANO, vol.15 No.9 pp.14185~14192, 2021
- Solution-processable electrode-material embedding in dynamically inscribed nanopatterns (SPEEDIN) for continuous fabrication of durable flexible devices, MICROSYSTEMS & NANOENGINEERING, vol.7 No.1 pp.74~, 2021
- Facile Airbrush Fabrication of Gas Diffusion Layers Comprising Fine-Patterned Hydrophobic Double-Layer and Hydrophilic Channel for Improved Water Removal in Polymer Electrolyte Membrane Fuel Cells, INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY, vol.8 No.5 pp.1461~1469, 2021
- Nanoimprint lithography for high-throughput fabrication of metasurfaces, Frontiers of Optoelectronics, vol.14 No.2 pp.229~251, 2021
- Top-down nanofabrication approaches toward single-digit-nanometer scale structures, JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, vol.35 No.3 pp.837~859, 2021
- Demonstration of the one-step continuous fabrication of flexible polymer ridge waveguides via nanochannel-guided lithography, JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, vol.95 pp.286~291, 2021
- Piezo-Actuated One-Axis Vibrational Patterning for Mold-Free Continuous Fabrication of High-Precision Period-Programmable Micro- and Nanopatterns, ACS NANO, vol.15 No.2 pp.3070~3078, 2021
- Tailoring zinc oxide nanowire architectures collectively by catalytic vapor-liquid-solid growth, catalyst-free vapor-solid growth, and low-temperature hydrothermal growth, CERAMICS INTERNATIONAL, vol.47 No.2 pp.2131~2143, 2021
Conference Papers
- Dong Kyo Oh, Minwook Kim, Kwangjun Kim, Hyunchan Noh, Inhui Han, Hojae Ji, Wonjun Lee, Junsuk Rho, Jong G. Ok, Fabrication of flexible and durable heating devices on polyimides by solution-based metal embedding in continuously inscribed micro- and nano-trenches, Proceedings of the 2021 International Conference on Micro- and Nano-devices Enabled by R2R Manufacturing, Austin, TX, USA, 2021
- Minwook Kim, Hyein Kim, Useung Lee, Hyunchan Noh, Hyungi Son, Kwangjun Kim, Eunchang Jeong, Geonhui Jo, Jong G. Ok, User-specific design and manufacturing of flexible micro- and nano-devices by utilizing continuous mechanical machining protocols, Proceedings of the 2021 International Conference on Micro- and Nano-devices Enabled by R2R Manufacturing, Austin, TX, USA, 2021
- Useung Lee, Hyunchan Noh, Hyungi Son, Hyein Kim, Inhui Han, Geonhui Jo, Kwangjun Kim, Minwook Kim, Jong G. Ok, Continuous manufacturing of blazed angle-tunable prismatic micro/nanopatterns by axis-tilted nanoinscribing, Proceedings of the 2021 International Conference on Micro- and Nano-devices Enabled by R2R Manufacturing, Austin, TX, USA, 2021
- Kwangjun Kim, Inhui Han, Jungkeun Song, Useung Lee, Hyein Kim, Hyungi Son, Kwangjin Choi, Minwook Kim, Jong G. Ok, Conceptual demonstration of continuous Roll-to-Roll manufacturing of transparent and flexible UV sensors, Proceedings of the 2021 International Conference on Micro- and Nano-devices Enabled by R2R Manufacturing, Austin, TX, USA, 2021
- 김혜인, 노현찬, 김민욱, 정덕영, 지호재, 손현지, 이원준, 백현민, 옥종걸, Flexible molding process of solution-based functional layers for transparent heating devices, Proceedings of 2021 KSMTE Fall Conference, 제주, 2021
- 손현지, 최광진, 김혜인, 지호재, 박재원, 김광준, 조건희, 옥종걸, Development and parametric optimization of the mechanically assisted printing of carbon nanotube-polymer composites (CPCs) on the fabrics for highly durable electronic textiles, Proceedings of 2021 KSMTE Fall Conference, 제주, 2021
- 김민욱, 노현찬, 정덕영, 조건희, 김혜인, 이원준, 지호재, 백현민, 양재혁, 옥종걸, Development of a flexible mold stamping process of metallic solution-based patterns for facile manufacturing of transparent heating panels, Proceedings of 2021 KSMPE Fall Conference, 제주, 2021
- 조건희, 최광진, 손현지, 박재원, 한인희, 김민욱, 김광준, 이원준, 김태윤, 옥종걸, Mechanically assisted printing of carbon nanotube-polymer composites (CPC) for highly durable electronic textiles, Proceedings of 2021 KSMPE Fall Conference, 제주, 2021
- 옥종걸, Continuous Nanopatterning Technologies based on Mechanical Machining Principles, Proceedings of 2021 KSMPE Fall Conference, 제주, 2021
- 조건희, 최광진, 손현지, 박재원, 한인희, 김민욱, 김광준, 이원준, 지호재, 옥종걸, Fabrication of durable electronic textiles by the mechanically assisted printing of carbon Nanotube-polymer composite (CPC) on various fabrics, Proceedings of 2021 KMEMS Fall Conference, 안면도, 2021
- 김민욱, 노현찬, 정덕영, 조건희, 김광준, 지호재, 이원준, 옥종걸, Facile manufacturing of the transparent heating device through the flexible mold printing of a reductive ionic metal solution, Proceedings of 2021 KMEMS Fall Conference, 안면도, 2021
- 김광준, 한인희, 송정근, 김혜인, 이우승, 손현지, 이민영, 정덕영, 옥종걸, Fabrication of Ag-ZnO nanowire hybrid structures by the low-temperature solution processing on flexible substrates and evaluation of its electrical and sensing properties, Proceedings of 2021 KMEMS Fall Conference, 안면도, 2021
- 김혜인, 이우승, 손현지, 박종갑, 노현찬, 김민욱, 조건희, 지호재, 옥종걸, Axis-controlled nanoinscribing for continuous fabrication of shape- and period-tunable micro- and nanograting patterns, Proceedings of 2021 KMEMS Fall Conference, 안면도, 2021
- 김광준, 이원준, 최광진, 손현지, 한인희, 정덕영, 김민욱, 지호재, 박재원, 옥종걸, Development of highly durable electronic textiles by mechanically assisted printing of carbon nanotube-polymer composite on the fabrics, Proceedings of 2021 KSME Fall Conference, 광주, 2021
- 정덕영, 김민욱, 노현찬, 정은창, 조건희, 김광준, 이원준, 윤부현, 김민규, 옥종걸*, Facile Fabrication of High-Performance Transparent heating devices based on flexible mold stamping of metallic ink, Proceedings of 2021 KSME Fall Conference, 광주, 2021
- 김민욱, 김광준, 김혜인, 손현지, 한인희, 이원준, 지호재, 정덕영, 조건희, 옥종걸, Integration of CNT absorbent and nanopattern in gas chromatography sensors, Proceedings of the KSS Fall Conference, 강릉, 2021
- Incheol Jung, Hyeonwoo Kim, Hojae Kwak, Kwangjun Kim, Minwook Kim, Hui Joon Park, Jong G. Ok, and Kyu-Tae Lee, Transmissive RGB Primary Colors Featuring High Brightness and High Purity in Quad-Layer Thin-Films, Proceedings of IUMRS-ICA 2021, 제주, 2021
- Hojae Kwak, Incheol Jung, Hyeonwoo Kim, Kwangjun Kim, Minwook Kim, Hui Joon Park, Jong G. Ok, and Kyu-Tae Lee, Penta-Layer Reflective RGB Primary Structural Color Filters with High Efficiency and High Purity in Dual Cavities, Proceedings of IUMRS-ICA 2021, 제주, 2021
- H. Kwak, I. Jung, H. Kim, K. Kim, M. Kim, H. J. Park, J. G. Ok, and K.-T. Lee, Dual-cavity based penta-layered reflective RGB structural colors filters, Proceedings of SPIE Optics + Photonics 2021, San Diego, CA, USA, 2021
- I. Jung, T. Y. Kim, H. Kim, H. Kwak, K. Kim, M. Kim, C. K. Hwangbo, H. J. Park, J. G. Ok, and K.-T. Lee, Transmissive RGB colors with high purity and high brightness by quad-layered thin films, Proceedings of SPIE Optics + Photonics 2021, San Diego, CA, USA, 2021
- D. K. Oh, W. Lee, H. Chae, J. Kim, U. Lee, H. Noh, H. Kim, H. Youn, J. Rho, and J. G. Ok, Continuous Microstructured Metal Embedding Using Metal Solution Deposition and Seamless Nanoinscribing and its Application to a Highly-Durable Flexible Heating Device, Proceedings of PRESM 2021, 제주, 2021
- K. Kim, E. Jeong, K. Choi, M. Kim, J. Park, and J. G. Ok, Optimization of Carbon Nanotube Microstructure Growth dictated by Ostwald Ripening and Subsurface Diffusion in Micropatterned Catalyst, Proceedings of PRESM 2021, 제주, 2021
- 옥종걸, Fab-less Fab: Lithography-free Nanopatterning and Vacuum-free Thin-film Architecturing, Proceedings of PRESM 2021, 제주, 2021
- S.-H. Kwak, C.-H. Yoo, J.-K. Choi, J. G. Ok, J.-S. Wi, C. Kim, and H.-K. Na, Attomolar detection of miRNAs with fine-tuning of plasmonic nanostructures, Nano Korea 2021 Proceedings, 일산, 2021
- H. Kwak, I. Jung, H. Kim, K. Kim, M. Kim, H. J. Park, J. G. Ok, and K.-T. Lee, Reflective RGB Structural Colors with High Efficiency and High Purity in Dual-Cavities, Nano Korea 2021 Proceedings, 일산, 2021
- I. Jung, H. Kim, H. Kwak, K. Kim, M. Kim, H. J. Park, J. G. Ok, and K.-T. Lee, Quad-layered transmissive color filters creating pure and bright RGB primary colors, Nano Korea 2021 Proceedings, 일산, 2021
- J. Song, I. Han, U. Lee, K. Choi, H. Kim, H. Son, K. Kim, M. Kim, and J. G. Ok, All-solution-processible, low-temperature, and vacuum-free fabrication of ZnO nanowire-Ag hybrid flexible UV sensors, Nano Korea 2021 Proceedings, 일산, 2021
- E. Jeong, K. Kim, K. Choi, M. Kim, H. Noh, J. Song, H. Ji, W. Lee, and J. G. Ok, High-yield and highly reproducible growth of carbon nanotube microarchitectures by controlling the surface energy-incorporated thermodynamic behavior of micropatterned catalysts, Nano Korea 2021 Proceedings, 일산, 2021
- U. Lee, H. Kim, H. Noh, H. Son, B. Youn, E. Jeong, D. Jeong, G. Jo, and J. G. Ok, Continuous fabrication of blaze angle-tunable slanted nanograting structures by parametrically controlled axis-tilted nanoinscribing, Nano Korea 2021 Proceedings, 일산, 2021
- 옥종걸, Fab-less Fab: All-solution-processible, vacuum-free fabrication of functional micro- and nanostructures, Proceedings of 2021 KSMTE Spring Conference, 강릉, 2021
- 김광준, 송정근, 한인희, 정은창, 정덕영, 조건희, 지호재, 옥종걸*, Low-temperature solution-processible fabrication of highly sensitive flexible UV sensors comprising Ag-ZnO nanowire hybrid structures, Proceedings of 2021 KSMTE Spring Conference, 강릉, 2021
- 정은창, 김광준, 최광진, 지호재, 이원준, 정덕영, 조건희, 김민욱, 옥종걸*, Characterization of micropatterned catalyst metal particle surfaces for robust growth of carbon nanotube microarchitectures, Proceedings of 2021 KSMTE Spring Conference, 강릉, 2021
- 송정근, 한인희, 이우승, 최광진, 김혜인, 손현지, 김광준, 김민욱, 옥종걸, Low-temperature, all-solution-processible micro-nanopattern machining process and its application to Ag-ZnO nanowire hybrid flexible UV sensor, Proceedings of 2021 KSMPE Spring Conference, 부산, 2021
- 이우승, 노현찬, 김민욱, 송정근, 이원준, 김혜인, 손현지, 옥종걸, Fabrication of blazed micro- and nanopatterns by etch-free direct machining and optimization of its process factors, Proceedings of 2021 KSMPE Spring Conference, 부산, 2021
- 정은창, 김광준, 최광진, 노현찬, 한인희, 김민욱, 지호재, 이원준, 옥종걸*, Investigation into Ostwald ripening and subsurface diffusion between the alumina supporting layer and micropatterned metal catalytic layer, toward high-yield and reproducible carbon nanotube microarchitectures, Proceedings of the 2021 KSME Micro/Nanoengineering Divisional Spring Conference, 부산, 2021
- 한인희, 송정근, 이우승, 손현지, 김혜인, 정은창, 노현찬, 김광준, 정덕영, 조건희, 옥종걸*, All-solution-processible fabrication of micro- and nanopatterned device structures, exemplified by the ZnO nanowire-Ag hybrid flexible UV sensor, Proceedings of the 2021 KSME Micro/Nanoengineering Divisional Spring Conference, 부산, 2021
- 노현찬, 이우승, 김혜인, 손현지, 한인희, 정은창, 김민욱, 옥종걸*, Continuous direct machining of angle-tunable blazed micro- and nanopatterns by controlled axis-tilted nanoinscribing, Proceedings of the 2021 KSME Micro/Nanoengineering Divisional Spring Conference, 부산, 2021
- 이우승, 김혜인, 손현지, 노현찬, 김광준, 김민욱, 송정근, 최광진, 윤부현, 옥종걸*, Axis-Tilted Nanoinscribing for Continuous Fabrication of Angle-Tunable Blazed Micro- and Nanopatterns : Principle Development and Systematic Optimization, Proceedings of the KSPE 2021 Spring Conference, 제주, 2021
- 김민욱, 노현찬, 이우승, 손현지, 김혜인, 김광준, 정은창, 한인희, 박재원, 옥종걸*, Facile Fabrication of Flexible Electronics Platforms by Direct Microtrench Machining and Solution-Processable Metal Embedding, Proceedings of the KSPE 2021 Spring Conference, 제주, 2021
- 김광준, 정은창, 최광진, 한인희, 김혜인, 김민욱, 옥종걸*, 직접성장 CNT기반 소자 응용을 위한 마이크로 패턴 촉매금속의 형상학적 변화 특성 분석, Proceedings of the 23rd Korean MEMS Conference, 부여, 2021
- K. Kim, E. Jeong, K. Choi, B. Han, J. Park, C. Moon, M. Kim and J. G. Ok*, Facilitating the micropatterned CNT structure fabrication by the nanomorphological control of catalyst layers based on Ostwald-ripening and Subsurface-diffusion, Proceedings of NCC 2021, 곤지암, 2021
- M. Kim, H. Noh, B. Youn, E. Jeong, K. Kim, I. Han, J. Song, M. Kim and J. G. Ok*, Development of highly durable and energy-efficient heaters by all-solution-processable fabrication protocol utilizing reductive Ag ink and carbon nanotube solution, Proceedings of NCC 2021, 곤지암, 2021
- K. Choi, U. Lee, J. Park, B. Youn, J. Song, I. Han, M. Kim, K. Kim and J. G. Ok*, Continuous nanopatterning by utilizing axis-tuned nanoinscribing and piezo vibration-driven nanoindenting, Proceedings of NCC 2021, 곤지암, 2021
Patents
Patents and Patent Applications: http://www.oknano.org/xe/patents
Projects
Sponsored Projects: http://oknano.org/xe/research_sp
수상
- Low-temperature solution-processible fabrication of highly sensitive flexible UV sensors comprising Ag-ZnO nanowire hybrid structures, Best Paper Presentation Award, KSMTE, 2021
- Development of a flexible mold stamping process of metallic solution-based patterns for facile manufacturing of transparent heating panels, Best Paper Presentation Award, KSMPE, 2021
- Axis-controlled nanoinscribing for continuous fabrication of shape- and period-tunable micro- and nanograting patterns, Best Poster Award, MNS, 2021
- Fabrication of Ag-ZnO nanowire hybrid structures by the low-temperature solution processing on flexible substrates and evaluation of its electrical and sensing properties, Best Poster Award, MNS, 2021
- Fabrication of durable electronic textiles by the mechanically assisted printing of carbon Nanotube-polymer composite (CPC) on various fabrics, Best Poster Award, MNS, 2021
- Development of durable flexible electrodes using nanoscribing and solution-processable wire embedding, Best Paper Presentation Award, KSMTE, 2021
- Low-temperature, all-solution-processible micro-nanopattern machining process and its application to Ag-ZnO nanowire hybrid flexible UV sensor, Best Paper Presentation Award, KSMPE, 2021
- Piezo-actuated One-axis-vibrational Patterning for mold-free continuous fabrication of high-precision period-programmable micro- and nanopatterns and the Others, Micro/Nanoengineering Creation & Innovation Award, KSME, 2021
Miscellaneous
Official Member:
• Korean Society of Mechanical Engineers (KSME; http://eng.ksme.or.kr)
  - Board member of Production and Design Division, Micro-Nano Division
• Korean Society of Precision Engineering (KSPE; http://www.kspe.or.kr)
• Korean Society of Manufacturing Technology Engineers (KSMTE; http://ksmte.kr/eng)
• Korean Society of Precision Engineering (K-MEMS; http://kmems.org)
• Korea Nano Technology Research Society (KoNTRS; http://kontrs.or.kr/english/index.asp)

Journal Reviewer:
International
• Nanoscale (since 2015)
• ACS Applied Materials & Interfaces (since 2015)
• RSC Advances (since 2015)
• Applied Thermal Engineering (since 2015)
• Journal of Mechanical Science and Technology (since 2014)
Domestic
• Journal of the Korean Society of Manufacturing Technology Engineers (since 2015)
• Journal of the Korean Society for Precision Engineering (since 2015)