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Research Interest

Graphene ink and composites for heat dissipation and EMI shielding 
Freestanding multilayered graohene for EUV litho. and various filters


  • 1994 ~1996 Sungkyunkwan Univ. Assistant Professor
  • 1989 ~1994 ETRI Senior Researcher
  • 1985 ~1989 Stanford Univ. Research Assistant

Journal Article

  • (2021)  Cost-effective synthesis of carbon loaded Co3O4 for controlled hydrogen generation via NaBH4 hydrolysis.  INTERNATIONAL JOURNAL OF HYDROGEN ENERGY.  47,  1
  • (2021)  Fabrication of extreme ultraviolet lithography pellicle with nanometer-thick graphite film by sublimation of camphor supporting layer.  NANOTECHNOLOGY.  32,  46
  • (2021)  Hard Coating Materials Based on Photo-Reactive Silsesquioxane for Flexible Application: Improvement of Flexible and Hardness Properties by High Molecular Weight.  POLYMER.  13,  10
  • (2021)  Synthesis of uniform nanometer-thick graphite films on polycrystalline Ni substrates with ultrafine grains.  CARBON.  177, 
  • (2020)  The 100 mm x 100 mm Extreme Ultraviolet Graphite Pellicle: Nano-Pellicle Production Using the Lowest Free Energy at the Graphite-Water Interface.  ADVANCED MATERIALS INTERFACES.  7,  24
  • (2020)  Relationship between surface hydrophobicity and flux for membrane separation.  RSC ADVANCES.  10,  66
  • (2020)  Boron carbide coating to improve the chemical stability of nm-thick graphite films.  THIN SOLID FILMS.  704, 
  • (2020)  ZnO decorated flexible and strong graphene fibers for sensing NO2 and H2S at room temperature.  SENSORS AND ACTUATORS B-CHEMICAL.  308, 
  • (2019)  Expanded graphene oxide fibers with high strength and increased elongation.  RSC ADVANCES.  9,  8
  • (2019)  A way to improve the uniformity of nanometer-thickness graphite film synthesized on polycrystalline Ni substrate: From large grain to small grain.  CARBON.  144,  1
  • (2019)  Incorporation of Ge in Cu2ZnSnS4 thin film in a Zn-poor composition range.  MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING.  89,  1
  • (2018)  Inkjet Printing of SiO2 Hollow Spheres/Polyimide Hybrid Films for Foldable Low-k ILD.  MACROMOLECULAR RESEARCH.  26,  12
  • (2018)  Influence of stacking order and intermediate phase at low temperature on Cu2ZnSnS4 thin film formation for solar cell.  JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS.  29,  21
  • (2018)  A New Facile Route to Flexible and Semi-Transparent Electrodes Based on Water Exfoliated Graphene and their Single-Electrode Triboelectric Nanogenerator.  ADVANCED MATERIALS.  30,  39
  • (2018)  Scalable graphene composite membranes for enhanced ion selectivity.  JOURNAL OF MEMBRANE SCIENCE.  564,  1
  • (2018)  Formation process of graphite film on Ni substrate with improved thickness uniformity through precipitation control.  CHEMICAL PHYSICS LETTERS.  698, 
  • (2017)  All-inkjet-printed flexible piezoelectric generator made of solvent evaporation assisted BaTiO3 hybrid material.  NANO ENERGY.  41, 
  • (2017)  Large area nanometer thickness graphite freestanding film without transfer process.  CHEMICAL PHYSICS LETTERS.  690, 
  • (2017)  Porous MoS2@C hetero shell with Si yolk structure as an enhanced lithium transport anode material for lithium ion batteries.  JOURNAL OF MATERIALS CHEMISTRY A.  1,  1
  • (2017)  Determination of twisting angle of electrospun nanofiber bundle for continuous electrospinning system.  JOURNAL OF APPLIED POLYMER SCIENCE.  134,  48


  • (2002)  Chapter D "carbon nanotube-based field emission display" in Handbook of Luminescence, Display Materials and Nanocomposite.  American Scientific Publishers.  Co-author

Patent/Intellectual Property

  • 일체형 진동막을 포함하는 스피커 장치 및 일체형 진동막의 제조 방법.  10-2015-0190222.  20171228.  KOREA, REPUBLIC OF
  • 유연성 박막 증착 방법 및 이를 위한 증착 장치.  10-2016-0055563.  20171117.  KOREA, REPUBLIC OF
  • 무기물 중공구-함유 유무기 복합체 및 이의 제조 방법.  10-2015-0130308.  20170324.  KOREA, REPUBLIC OF
  • 탄소나노튜브 섬유의 연속 제조장치 및 제조방법.  10-2010-0043607.  20170228.  KOREA, REPUBLIC OF
  • 나노채널 폴리머 복합체, 이의 제조 방법, 및 이를 포함하는 멤브레인.  10-2014-0101022.  20160707.  KOREA, REPUBLIC OF
  • 흑연박막 및 이의제조방법 및 이를 포함하는 펠리클.  10-2014-0041855.  20160229.  KOREA, REPUBLIC OF
  • 무기박막의 제조방법 및 이를 위한 제조장치.  10-2014-0097414.  20141209.  KOREA, REPUBLIC OF
  • 멤브레인을 이용한 제습정수기.  10-1466249.  20141130.  KOREA, REPUBLIC OF
  • CZTSSe계 박막을 함유하는 광흡수층 및 이의 제조 방법.  10-2013-0066136.  20141126.  KOREA, REPUBLIC OF
  • Method for fabricating three dimensional graphene structures using catalyst templates..  13/298,752.  20140304.  UNITED STATES
  • 고열전도성 절연 재료용 수지 조성물 및 절연필름.  10-1333260.  20140108.  KOREA, REPUBLIC OF
  • 투명 그라핀 시트 및 그 제조방법.  10-1286175.  20140108.  KOREA, REPUBLIC OF
  • 다공성 나노구조를 갖는 그래핀 막의 제조방법.  10-1325575.  20131030.  KOREA, REPUBLIC OF
  • 전도성 물질의 전자거동이 분산형 무기 전계발광소자에 미치는 영향.  10-2009-0067224.  20110928.  KOREA, REPUBLIC OF
  • 탄소나노물질패턴 형성방법.  10-2008-0100014.  20100825.  KOREA, REPUBLIC OF
  • 무기 전계발광소자 및 그 제조방법.  10-2009-0067224.  20090723.  KOREA, REPUBLIC OF
  • 탄소나노튜브와 금속간의 접촉저항 강하 방법.  10-0873631-0000.  20081205.  KOREA, REPUBLIC OF
  • 금속 전구체층을 사용한 탄소나노튜브 형성방법 및 전계방출소자 제조방법.  10-2008-0106116.  20081028.  KOREA, REPUBLIC OF
  • 나노 호울을 이용한 나노 소자 및 그 제조방법.  10-0862656-0000.  20081002.  KOREA, REPUBLIC OF
  • 전계방출형 냉음극 장치 및 이의 제조 방법.  10-0846297-0000.  20080708.  KOREA, REPUBLIC OF

Honors / Awards

  • 2008, Minister of Education, Science and Technology: Contribution to Eng. Education
  • Member of National Academy of Engineering korea

Conference Paper

  • (2017)  Control of Graphene Layers by Nickel Diffusion in a Cu-Ni Alloy Foil.  The Asian-European International Conference on Plasma Surface Engineering.  KOREA, REPUBLIC OF
  • (2017)  Effect of Ge layer on properties of Cu2Zn(Sn1-xGex)S4 thin film for solar cell application.  The Asian-European International Conference on Plasma Surface Engineering.  KOREA, REPUBLIC OF
  • (2017)  Reduction of wrinkle of nanometer-thick graphite film by using leveling of PVA in vapor atmosphere.  The INTERNATIONAL Forum on Funtional Materials 2017.  KOREA, REPUBLIC OF
  • (2017)  Nanofiber yarn from a Ring Collector Continuous Producing Carbon Nanofibers.  The INTERNATIONAL SYMPOSIUM ON ADVANCED MATERIAL RESEARCH 2017.  KOREA, REPUBLIC OF
  • (2017)  Transfer of nanometer thickness graphite film without PMMA for spectral purity filter.  The Asian-European International Conference on Plasma Surface Engineering.  KOREA, REPUBLIC OF
  • (2016)  Effect of PA synthesis according to chemistry surface of AAO membrane.  9th International membrane science & technology conference.  AUSTRALIA
  • (2011)  Super growth of carbon nanotubes using water assisted chemical vapor deposition.  6th International conference on advanced materials development and performance.  JAPAN
  • (2011)  Doping and de-doping in SWCNTs film by the spontaneous redox process.  12th International conference on the science and application of nanotubes.  UNITED KINGDOM
  • (2011)  A role of HNO3 on transparent conducting film with single-walled carbon nanotubes.  12th International conference on the science and application of nanotubes.  UNITED KINGDOM
  • (2011)  The effect of buffer layer deposition on diameter and alignment of carbon nanotubes in water-assisted chemical vapor deposition.  12th International conference on the science and application of nanotubes.  UNITED KINGDOM
  • (2011)  The synthesis of vertically-aligned carbon nanotubes on an aluminum foil laminated on stainless steel.  12th International conference on the science and application of nanotubes.  UNITED KINGDOM
  • (2011)  Growth of Hierarchical TiO2 nanostructures on anatase nanofibers and their application in photocatalytic activty.  International conference on materials for advanced technologies.  SINGAPORE
  • (2011)  Synthesis and application of one-dimensional titanium oxide.  International conference on materials for advanced technologies.  SINGAPORE
  • (2010)  properties of InSe nanotube and shape transformation.  IUMRS-ICEM 2010.  KOREA, REPUBLIC OF
  • (2010)  Low temperature synthesis of TiO2 nanorods and the application in hybrid solar cell.  IUMRS-ICEM 2010.  KOREA, REPUBLIC OF
  • (2010)  Growth of Single Cristal Rutile TiO2 Rod Films on Si and Glass Substrate though the Buffer Layer using Wet Chemistry.  IUMRS-ICEM 2010.  KOREA, REPUBLIC OF
  • (2010)  Controlled synthesis and characterization of copper indium selenide nanocrystals.  IPS-18.  KOREA, REPUBLIC OF
  • (2010)  Formation of CIS thin film by using metal organic chemical vapor deposition.  IPS-18.  KOREA, REPUBLIC OF
  • (2010)  Preparation and characterization of Indium Selenide thin films by MOCVD.  IPS-18.  KOREA, REPUBLIC OF
  • (2010)  Graphene-Polyimide composite using easy souble expanded graphite.  NT10.  CANADA