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교수/연구실소개
전임 교수소개

교수정보의 상세 화면-2019
Download CV 이름 류학기 학력 박사 전공 신소재공학전공(과)
정보	연구실 : 팔달관707 연구실번호 : 1680 이메일 : hakkiyu@ajou.ac.kr 연구관심분야 : 저차원 나노 재료 & 박막 X-선 회절 & 물리화학 홈페이지1 : https://sites.google.com/site/hakkiyu/ 홈페이지2 : https://scholar.google.com/citations?user=fJ2jjbAAAAAJ&hl=en
학력	졸업연도/학교/학위 2010.08 포항공과대학교 박사 졸업연도/학교/학위 2003.08 포항공과대학교 학사
경력	-Visiting Scholar (09/2021 ~08/2022), Sabbatical year Korea Institute of Science and Technology (KIST, Seoul) -Invited Professor (08/2017 ~ ) Samsung Institute of Technology (SSIT): Lecture for Introduction of Materials Science 1 & 2 -Postdoctoral Research Fellow (11/2011 ~ 02/2015) [in English] Max Planck Institute for Bio-physical chemistry (Department of Dynamics at Surfaces) & Georg August University of Goettingen (Institute for Physical Chemistry), Germany Research Areas: Synthesis of complex surfaces for molecular beam scattering experiments (Advisor: Prof. Alec M. Wodtke). -Postdoctoral Research Fellow (09/2010 ~ 10/2011) Pohang University of Science and Technology (POSTECH), Dept. of Materials Science and Engineering Research Areas: Fabrication of large area nano-structures and applications to optoelectronic devices (Advisor: Prof. Jong-Lam Lee). -Editorial Committee of Korean Journal of Metals and Materials http://kim.or.kr/contents/sub01/04_2_2.asp -Referees of Nano Energy, The Journal of Physical Chemistry Letters, 2D Materials, ChemSusChem, Electrochimica Acta, Journal of Colloid and Interface Science, ChemCatChem, Materials Today Energy, Crystal Growth & Design, Journal of Alloys and Compounds, Scientific Reports, International Journal of Hydrogen Energy, Journal of the American Ceramic Society, Ceramics International, Materialia, ACS Applied Nano Materials, New Journal of Chemistry, IEEE Access, RSC advances, Journal of the Electrochemical Society, Surface and Coatings Technology, International Journal of Energy Research, Journal of Composite Science, Optical Materials, Nanomaterials, Sensors, Chemosensors, Science of Advanced Materials, Thin Solid Films, Materials, Micromachines, Electronics, Current Applied Physics, Applied Sciences, Crystals, Coatings, Materials, Entropy, Photonics, Molecular Crystal and Liquid Crystals, Advances in Mechanical Engineering, Bulletin of the Korean Chemical Society, Journal of the Korean Physical Society, Electronic Materials Letters, Journal of Nanoscience and Nanotechnology, Journal of the Korean Ceramic Society, 한국 표면공학회지, 대한금속재료학회지, 한국 재료학회지, 공학기술논문지, etc. -Reviewer board member of "Micromachines" https://www.mdpi.com/journal/micromachines/submission_reviewers -Guest editor of special issue: 2D Energy Materials in "Energies" https://www.mdpi.com/journal/energies/special_issues/2D_energy -대한금속재료학회 회원 & 융합분과 간사위원 (2015.03 ~ ) -대한금속재료학회지 편집위원 (2021.01~) -한국재료학회 학술 분과 이사 (2019.01~2022.12.31) -반도체 학술대회 P분과 (Device for energy) 공동 위원장 (2018.09~2021.02) -한국세라믹학회 회원 -한국센서학회 회원 -GPVC (Global Photovoltaic Conference) 분과위원 (2017.03) -제3기 국가나노기술지도 나노소재분과 분과위원 (2017.09~2018.02) -한국산업기술진흥협회 NEP, NET 심사위원 (2015.05 ~ ) -산업기술혁신 평가단 평가위원 (2017.03 ~ ) -중소기업기술개발 지원사업 평가위원 (2017.08 ~ ) -SBDC 중소기업유통센터 공공 구매제도 평가위원 (2020.03 ~ ) -국방기술품질원 국방과학기술 평가위원 (2021.02 ~ ) -경기테크토파크(TP) 지원사업 전문인력 (2021.02 ~ )
연구분야	1. Rational synthesis of nano-materials -Graphene growth and applications Growth of high quality graphene layer using CVD method and transfer process. Making free-standing graphehe using TEM grid patterns. Application of free-standing graphene for low energy electron scattering. Application of free-standing graphene for He scattering and molecular beam scattering. Application of free-standing graphene for bio-molecule imaging using Cryo-TEM. -Large-area nano facet (MgO), nanorods & wires (MgO, ZnO, ITO, and In2O3) Application to GaN-based high-power vertical-structure light emitting diodes (V-LEDs) & Alq3 based organic light emitting diodes (OLEDs) for solid-state lightings. Piezo-electronic devices such as haptic devices and energy harvesting devices. Super-hydrophobic surfaces for self-cleaning devices. -Nanomaterials for advanced catalysts and sensors (VO2, RuO2, SnO2, MoO2, WO2, TiO2, and ReO3) Growth mechanism analysis of nanorods (VLS & non-VLS process). Metal oxide nanowire with carbon complex for Li ion battery anode applications. Mott-transition of VO2 in nano-structure and their application as sensors. 2. Epitaxial growth of close packed metal (Ag, Cu, Pt, Au etc) and oxide materials (MgO, TiN, ZnO etc) and their characterization Domain matching epitaxy for the large lattice mismatch systems. Buffer layers of functional oxide such as ferroelectrics and wurtzite semiconductors. 3. Solar cell electrode design for high efficiency ITO nano-branches for high efficient organic solar cells (P3HT:PCBM solar cells). MgO facet design for the Yablonovitch limit (a-Si and Si based solar cells). Graphene as a flexible electrode of organic solar cells. Surface plasmon for the advanced light absorption. Design of distributed Bragg reflector (DBR) for total light absorption. 4. MgO based secondary electron emitters and Thermal energy storage systemn Control of preferred orientation of polycrystalline MgO film. Defect level control using excimer laser annealing. Application to plasma display panels, electron multipliers, and mass spectrometers.
기타	-Patent. 1. (Granted) 유학기, 이종람 "보호막 및 그 형성 방법" (대한민국, 등록번호: 10-0886828-0000). 2. (Granted) H. K. Yu, J. -L. Lee "PASSIVATION FILM AND METHOD OF FORMING THE SAME" (WO2008054102). 3. (Granted) H. K. Yu, J. -L. Lee "PASSIVATION FILM AND METHOD OF FORMING THE SAME" (US7915153). 4. (Granted) 손준호, 유학기, 이종람 “MgO 피라미드 구조를 갖는 발광소자 및 그 제조방법” (대한민국, 등록번호: 10-1165259-0000). 5. (Granted) J. H. Son, H. K. Yu, J. -L. Lee “LIGHT-EMITTING DEVICE HAVING AN MGO PYRAMID STRUCTURE AND MANUFACTURING METHOD FOR SAME” (WO2012005459). 6. (Granted) J. H. Son, H. K. Yu, J. -L. Lee “Light emitting device having MgO pyramid structure and method for fabricating the same” (US20130207074 A1). 7. (Granted) J. H. Son, H. K. Yu, J. -L. Lee “Light emitting device having MgO pyramid structure and method for fabricating the same” (US20158993997 B2). 8. (Granted) 유학기, 이종람 “버퍼층을 이용한 실리콘 기판 위의 산화아연 박막 형성 방법” (대한민국, 등록번호: 10-1135928-0000). 9. (Granted) 손준호, 유학기, 이종람 “표면증강라만산란 분광용 기판 제작 방법” (대한민국, 등록번호: 10-1097205-0000). 10. (Granted) 유학기, 정관호, 동완재, 이종람 “태양전지용 기판 및 이의 제조방법” (대한민국, 등록번호: 10-1186560-0000). 11. (Granted) H. K. Yu, G. H. Jung, W. J. Dong, J. -L. Lee “SUBSTRATE FOR SOLAR CELL AND METHOD FOR MANUFACTURING SAME” (WO2013006017). 12. (Granted) 유학기, 이종람 “전자선 증착장비를 이용한 인듐 주석 산화물 나노 막대 제조 방법” (대한민국, 등록번호: 10-1217786-0000). 13. (Granted) 송양희, 유학기, 이종람 “습식 식각형 버퍼층을 이용한 수직형 발광다이오드 제조 방법” (대한민국, 등록번호: 10-1238169-0000). 14. (Granted) 유학기, 이종람 “전자선 증착 장비를 이용한 산화아연 나노 막대 제조방법” (대한민국, 등록번호: 10-1243633-0000). 15. (Granted) 유학기, 이종람 “투명 전도성 플렉서블 기판 및 그 제조방법” (대한민국, 등록번호: 10-1272796-0000). 16. (Granted) 정관호, 유학기, 동완재, 함주영, 이종람 “도전성 플렉서블 기판 및 그 제조방법” (대한민국, 등록번호: 10-1284873-0000). 17. (Granted) 유학기, 동완재, 정관호, 이종람 “태양전지 소자 및 그 제조방법” (대한민국, 등록번호: 10-1295199-0000). Prime Minister Award (2nd prize), the 32th Korea Invention Patent Exhibition. 18. (Granted) H. K. Yu, W. J. Dong, G. H. Jung, J. -L. Lee “SOLAR CELL ELEMENT AND MANUFACTURING METHOD FOR SAME” (WO2013006016). Prime Minister Award (2nd prize), the 32th Korea Invention Patent Exhibition. 19. (Granted) 김성준, 홍기현, 유학기, 이종람 “유기 발광 다이오드용 기판 및 이의 제조방법” (대한민국, 등록번호: 10-1317276-0000). 20. (Granted) H. K. Yu, A. M. Wodtke “Graphene with very high charge carrier mobility and preparation thereof” (EP2801551 A1) 21. (Granted) H. K. Yu, A. M. Wodtke “Graphene with very high charge carrier mobility and preparation thereof” (WO2014180919 A1) 22. (Revision) 손준호, 유학기, 이종람 “MgO 피라미드 구조를 갖는 발광소자 및 그 제조방법” (대한민국, 분할출원: 10-2011-0115338).
논문 및 연구활동	연구활동(주요논문) [논문] Tuqeer Nasir, 김범준, 이동규, 김관우, 김학철, 이상훈, 임형규, 정병주, 류학기, 최재영, Design of softened polystyrene for crack- and contamination-free large-area graphene transfer , NANOSCALE , pp.21865 -26870 (Oct, 2018) [논문] 이동규, 김태수, 류학기, 최재영, Recrystallized NaCl from Thin Film to Nano-/Microsized Sacrificial Crystal for Metal Nanostructures , CRYSTAL GROWTH & DESIGN , Vol.18 , pp.5295 -5300 (Sep, 2018) [논문] 이동규, 오세인, 김성주, 류학기, 이종람, 최재영, Water-Soluble Epitaxial NaCl Thin Film for Fabrication of Flexible Devices , SCIENTIFIC REPORTS , Vol.7 , pp.8716-1 -8716-7 (Aug, 2017) [논문] 류학기, 이종람, Understanding of preferred orientation formation in rock-salt materials: The case of MgO , CRYSTAL GROWTH & DESIGN , Vol.16 , No.4 , pp.1978 -1983 (Apr, 2016) [논문] 류학기, Claus Ropers, Janina Krieg, Kannan Balasubramanian , Klaus Kern, Manisankar Maiti , 김기수, 이종람, Alec M. Wodtke, Chemical vapor deposition of graphene on a "peeled-off" epitaxial Cu(111) foil: a simple approach to improved properties , ACS NANO , Vol.8 , No.8 , pp.8636 -8643 (Aug, 2014) 국제학술논문지 [논문] GUDENA GUTEMA TESHOME, 조현호, MEGERSA DABA DEME, 배종성, 이재영, 류학기, Single-step growth of MoO3 nanorods via magnetron sputtering , CRYSTENGCOMM , pp.1 -7 (Dec, 2022) [논문] 우채헌, 전지호, Xiaojie Zhang, Xue Dong, 강진수, 김태영, 안정윤, 오형석, 정병주, 최경환, 류학기, 최재영, Synthesis and polymorphism of a new phase 1D chalcogenide M2N3X8 structure based on the periodic table Ta2Ni3S8 with a tetragonal structure , JOURNAL OF ALLOYS AND COMPOUNDS , pp.1667521 -1667526 (Dec, 2022) [논문] Ghulam Asghar, Xue Dong, Shahid Saqlain, 김태영, 박재혁, 안정윤, 오승배, 오형석, 우채헌, 전지호, 채수동, 최경환, 류학기, 최재영, Synthesis of TiO2 Nanoparticle-Embedded SiO2 Microspheres for UV Protection Applications , CRYSTAL GROWTH & DESIGN , pp.1 -7 (Nov, 2022) [논문] 김태영, 우채헌, Xiaojie Zhang, Xue Dong, 강진수, 안정윤, 오형석, 전지호, 최경환, 류학기, 최재영, Colloidal synthesis of 1-D van der Waals materialNb2Se9: study of synergism of coordinating agent in a co-solvent system , Nanoscale , pp.1 -8 (Nov, 2022) [논문] 정병주, 조수헌, 이재현, 김범준, 오형석, 이봄, 이상훈, 전지호, 최경환, 류학기, 최재영, Novel High Current Carrying Quasi-1D Material: Nb2PdS6 , SMALL , pp.22053441 -22053448 (Nov, 2022) [논문] Ghulam Asghar, Xue Dong, 김태영, 안정윤, 오승배, 오형석, 우채헌, 유찬세, 전지호, 채수동, 최경환, 류학기, 최재영, Synthesis of hollow forsterite by coating method and study of its dielectric properties , CERAMICS INTERNATIONAL , pp.1 -5 (Oct, 2022) [논문] 김노을, 김영호, 조현호, 황종국, 류학기, 최재영, Formation of palladium nano-gap on self-crackedWO3 for hydrogen gas sensors , INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , pp.1 -6 (Sep, 2022) [논문] 조수헌, 최경환, 이재현, Xiaojie Zhang, 강진수, 오형석, 이봄, 전지호, 정병주, 류학기, 최재영, One-Dimensional van der Waals Material InSeI with Large Band-gap for Optoelectronic Applications , JOURNAL OF ALLOYS AND COMPOUNDS , pp.1669951 -1669957 (Sep, 2022) [논문] 김영호, Xue Dong, 채수동, Ghulam Asghar, 최성웅, 류학기, 김범준, 최재영, Ultrahigh‐Porosity MgO Microparticles for Heat‐Energy Storage , ADVANCED MATERIALS , pp.22047751 -22047759 (Jul, 2022) [논문] 이봄, 이상훈, 이재현, 조현호, 김범준, 박재혁, 장한얼, 정병주, 조수헌, 류학기, 최재영, Liquid precursor assisted chemical vapor deposition of 1-D van der Waals materials Nb2Se9 , ACS SENSORS , pp.1912 -1918 (Jun, 2022) [논문] 전지호, 최경환, 이재현, 김태영, 안정윤, 오승배, 우채헌, 정병주, 채수동, 류학기, 최재영, 1D van der Waals Nb2Pd3Se8‐Based n‐Type Field‐Effect Transistors Prepared by Liquid , ADVANCED MATERIALS INTERFACES , pp.22006201 -22006208 (Jun, 2022) [논문] 우채헌, 채수동, Ghulam Asghar, Xiaojie Zhang, Xue Dong, 김태영, 안정윤, 오승배, 전지호, 최경환, 류학기, 최재영, Colloidal Synthesis of Chromium Phosphide Assisted by Partial Oxidation and its Electrocatalytic Activity in Oxygen Reduction Reaction , CRYSTAL GROWTH AND DESIGN , pp.4157 -4164 (May, 2022) [논문] Tuqeer Nasir, 김범준, 윤상옥, 이봄, 이상훈, 장한얼, 정병주, 조수헌, 류학기, 최재영, Wafer scale vertical graphene growth on SiO2 by remote metal catalyst assisted MOCVD and its application as NO2 gas sensor , CRYSTAL GROWTH AND DESIGN , pp.4192 -4202 (May, 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[논문] 류학기, 백정민, 이종람, Design of an Interfacial Layer to Block Chemical Reaction for Epitaxial ZnO Growth on a Si Substrate , CRYSTAL GROWTH & DESIGN , Vol.11 , No.6 , pp.2438 -2443 (Jun, 2011) [논문] 송양희, 류학기, 손준호, 이정용, 이주호, 정관호, 이종람, Domain Matching Epitaxy of Mg-Containing Ag Contact on p-Type GaN , CRYSTAL GROWTH & DESIGN , Vol.11 , No.6 , pp.2559 -2563 (Jun, 2011) [논문] 예병욱, 류학기, 김명화, 백정민, 이종람, Modulating ZnO nanostructure arrays on any substrates by nanolevel structure control , JOURNAL OF PHYSICAL CHEMISTRY C , Vol.115 , No.16 , pp.7987 -7992 (May, 2011) [논문] 이유민, 류학기, 예병욱, 이종람, 김명화, 백정민, Facile synthesis of single crystalline metallic RuO2 nanowires and electromigration-induced transport properties , JOURNAL OF PHYSICAL CHEMISTRY C , Vol.115 , No.11 , pp.4611 -4615 (Mar, 2011) [논문] 류학기, 이종람, Growth mechanism of MgO film on Si (100): Domain matching epitaxy, strain relaxation, preferred orientation formation , CRYSTAL GROWTH & DESIGN , Vol.10 , No.12 , pp.5200 -5204 (Dec, 2010) [논문] 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이종람, Degradation Mechanism of Secondary Electron Emission in Plasma-Exposed MgO Films , JAPANESE JOURNAL OF APPLIED PHYSICS , Vol.45 , No.7R (Jul, 2009) [논문] 손준호, 류학기, 송양희, 이종람, Low Resistance and Themarlly Stable Ohmic Contact on p-type GaN Using a RuO2 Diffusion Barrier , ELECTRONIC MATERIALS LETTERS , Vol.4 , No.4 , pp.157 -160 (Oct, 2008) [논문] 김수영, 류학기, 김기수, 김웅권, 홍기현, 이종람, Effect of N 2, Ar, and O 2 plasma treatments on surface properties of metals , JOURNAL OF APPLIED PHYSICS , Vol.103 , No.7 (Apr, 2008) [논문] 김수영, 류학기, 백정민, 이종람, Highly efficient organic light-emitting diodes with hole injection layer of transition metal oxides , JOURNAL OF APPLIED PHYSICS , Vol.98 , No.9 (Nov, 2005) [논문] 김수영, 류학기, 김광영, 백정민, 탁윤흥, 이종람, Rhodium-oxide-coated indium tin oxide for enhancement of hole injection in organic light emitting diodes , APPLIED PHYSICS LETTERS , Vol.87 , No.7 (Aug, 2005) [논문] 장호원, 류학기, 김수영, 김종규, 이종람, Ohmic contacts for high power LEDs , PHYSICA STATUS SOLIDI A-APPLICATIONS AND 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