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고려대학교 교수소개

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Prof. Wonjoon Choi

Office: Innovation Hall, RM 316

Tel:  +82-2-3290-5951

E-mail: wojchoi@korea.ac.kr

  • About Professor
  • Curriculum Vitae
  • Publication
  • Research
  • Teaching
  • Lab Members

  • Profile

    Prof. Wonjoon Choi 
    Associate Professor, School of Mechanical Engineering, Korea University 
    316, Innovation Hall, Korea University, Anamdong, 5-Ga, Sungbuk-Gu, Seoul, Korea, 136-713
    Phone: 82-2-3290-5951
    Email : wojchoi@korea.ac.kr
     

  • Curriculum Vitae

    Education
    2012.02  Ph. D. | Department of Mechanical Engineering, 
    Massachusetts Institute of Technology (MIT), USA  
    (P. I. : Michael S. Strano)
    2003.02  B.S. | School of Mechanical & Aerospace Engineering 
    Seoul National University, Seoul, Korea 
     
    Professional Experiences
    • 2017.09 - present      Associate Professor, School of Mechanical Engineering, Korea University
      2012.09 - 2017.08     Assistant Professor, School of Mechanical Engineering, Korea University
      2012.02 - 2012.08     Postdoctoral Associate, Department of Chemical Engineering, Massachusetts Institute of Technology (MIT) 
    •                                   (P. I. : Paula T. Hammond, Angela M. Belcher)
      2004.07 - 2006. 04    Platform Development Team Assistant Engineer, KEBTechnology Co.,Ltd
      2003.03 - 2004. 06    Engineer, CyberCVS Co.,Ltd.

     

  • Publication

     
    2018 
     
    47.  Park. T.Y.; Lee. S.J.; Cha. J.H.; Choi. W.*;  "Scalable Fabrication of Nanopores in Membranes via Thermal Annealing of Au Nanoparticles", (Submitted)
     
    46.  Seo. B.S.; Hwang. H.Y.; Park. S.H.; Choi. W.*;  "A Simple Fabrication Route of Porous Palladium/Palladium Oxide/Carbon Nanostructures using One-Step Combustion Waves for High-Performance pH Sensors", (Submitted)
     
    45.   Lee. S.J.; Kang. J.Y.;  Choi. W.*; Kwak. R.K.*; "Buffer-less Electric Emulsification with Real-Time Characterization by using Implanted Resistive Pulse Sensing", (Submitted)
     
    44.   Lee. S.H.; Bae. Y.G.; Yoon. K.J.; Lee. J.H.; Choi. W.; Hong. J.S.*; "Investigation of local thermodynamic states within a solid oxide fuel cell stack for hydrocarbon-fueled operations", (Submitted)
     
    43.  Seo. B.S.; Hwang. H.Y.; Kang. S.G.; Cha. Y.S.; Choi. W.*; "Flexible-detachable dual-output sensors of fluid temperature and dynamics based on structural design of thermoelectric materials",  Nano Energy, 2018, 50, 733-743
     
    42.   Han. D.H.; Farion. C.; Yang. C.; Scott. T.; Browe. D.;  Choi. W.; Freeman. J.W.; Lee. H.W.*; "Soft Robotic Manipulation and Locomotion with a 3D Printed Electroactive Hydrogel", ACS Applied Materials & Interfaces, 2018, 10 (21), 17512-17518
     
    41.   Hwang. H.Y.; Lee. K.Y.; Shin. D.J.; Shin. J.H.; Kim. S.T.*; Choi. W.*; "Metal-free, Flexible Triboelectric Generator based on MWCNT Mesh Film and PDMS Layers", Applied Surface Science, 2018, 442, 693-699
     
    40.   Shin. D.J.‡; Shin. J.H.‡; Yeo. T.H.; Hwang. H.Y.; Park. S.H.; Choi. W.*; "Scalable Synthesis of Triple-Core-Shell Nanostructures of TiO2@MnO2@C for High Performance Supercapacitors using Structure-Guided Combustion Waves", Small, 2018, 14, 1703755
     
    39.  Hwang. H.Y.; Shin. J.H.; Lee. K.Y.*; Choi. W.*; "Facile one-pot transformation using structure-guided combustion waves of micro-nanostructured β-Bi2O3 to α-Bi2O3@C and analysis of electrochemical capacitance", Applied Surface Science, 2018, 428, 422-431
    2017
     
    38.  Yeo. T.H.; Shin. D.J.; Shin. J.H.; Hwang. H.Y.; Seo. B.S.; Lee. J.H.; Choi. W.*; "DC-field-driven combustion wave for one-step fabrication of reduced manganese oxide/multi-walled carbon nanotube hybrid nanostructures as high-performance supercapacitor electrodes",  Journal of Materials Chemistry A, 2017, 5 , 24707 
     
    37.  Shin. J.H.‡; Shin. D.J.‡; Hwang. H.Y.; Yeo. T.H.; Park. S.H.; Choi. W.*; "One-Step Transformation of MnO2 into MnO2–x@Carbon Nanostructures for High-Performance Supercapacitors using Structure-Guided Combustion Waves", Journal of Materials Chemistry A,  2017, 5, 13488
     
    36.  Shin. D.J.‡; Seong. T.H.‡; Choi. J.H.*; Choi. W.*; "Self-Sustaining Water-Motion Sensor Platform for Continuous Monitoring of Frequency and Amplitude Dynamics", Nano Energy, 2017, 35, 179
     
    35.   Hwang. H.Y.; Shin. D.J.; Yeo. T.H.; Choi. W.*; "Amplified Thermopower Waves in Large-Area Carbon-Nanotube/Fuel Composites via Thermal Decomposition of Sodium Nitrate", Advanced Materials Interfaces, 2017, 4(6), 1600908
     
    34.   Lee. S.H.; Park. M.S.; Kim. H.C.; Yoon. K.J.; Son. J.W.; Lee. J.H.; Kim. B.K.; Choi. W.; Hong. J.S.*; "Thermal Conditions and Heat Transfer Characteristics of High-Temperature Solid Oxide Fuel Cells Investigated by Three-Dimensional Numerical Simulations", Energy, 2017, 120, 293-305
     
    33.   Park. G.W.‡; Kang. S.G.‡; Lee. H.W.; Choi. W.*; "Tunable Multifunctional Thermal Metamaterials: Manipulation of Local Heat Flux via Assembly of Unit-Cell Thermal Shifters", Scientific Reports, 2017, 7, 41000
     
    32.   Lee. S.J.; Kang. J.Y.;  Choi. W.*; Kwak. R.K.*; "Nanopore Sensing in Aqueous Two-Phase System: Simultaneous Enhancement of Signal and Translocation Time via Conformal Coating", Small, 2017, 13, 1601725  (Inside Front Cover)
     
    31.  Yeo. T.H.; Hwang. H.Y.; Shin. D.J.; Seo. B.S.; Choi. W.*; "Thermoelectric-Pyroelectric Hybrid Energy Generation from Thermopower Waves in Core-Shell Structured Carbon Nanotube-PZT Nanocomposites", Nanotechnology, 2017, 28, 065403
    2016 
     
    30.   Shin. D.J.; Hwang. H.Y.; Yeo. T.H.; Seo. B.S.; Choi. W.*; "Thermopower Wave-driven Hybrid Supercapacitor Charging System", ACS Applied Materials & Interfaces, 2016, 8 (45), 31042-31050
     
    29.   Lee. S.H.‡; Seo. G.H.‡; Lee. S.H.; Jeong. U.J.; Lee. S.J.; Kim. S.J.* ; Choi. W.*; "Layer-by-Layer Carbon Nanotube Coatings for Enhanced Pool Boiling Heat Transfer on Metal Surfaces", Carbon, 2016, 107, 607-618
     
    28.   Park. G.W.‡; Lee. J.H.‡; Kang. S.G.; Kim. M.S.; Kang. S.* ; Choi. W.*; "Design Principle of Super Resolution Near-Field Structure Using Thermally Responsive Optical Phase Change Materials for Nanolithography Applications", Materials & Design, 2016, 102, 45-55
     
    27.   Shin. J.H.; Lee. K.Y.; Yeo. T.H.; Choi. W.*; "Facile One-pot Transformation of Iron Oxides from Fe2O3 Nanoparticles to Nanostructured Fe3O4@C Core-Shell Composites via Combustion Waves", Scientific Reports, 2016, 6, 21792
     
    26.   Lee. S.H.; Kim. H.C.; Yoon. K.J.; Son. J.W.; Lee. J.H.; Kim. B.K.; Choi. W.; Hong. J.S*; "The Effect of Fuel Utilization on Heat and Mass Transfer within Solid Oxide Fuel Cells Examined by Three-Dimensional Numerical Simulations", International Journal of Heat and Mass Transfer, 2016, 97, 77-93
     
    25.   Lee. K.Y.; Hwang. H.Y.; Kim. T.H.; Choi. W.*; "Enhanced Photocatalytic Activity of Bismuth Precursor by Rapid Phase and Surface Transformation Using Structure-Guided Combustion Waves",  ACS Applied Materials & Interfaces, 2016, 8 (5), 3366-3375
     
    24.   Um. J.E.; Yeo. T.H.; Choi. W.; Chae. J.S; Kim. H.S.; Kim. W.J.*; "Enhanced energy release from carbon nanotube-energetic material composites", Science of Advanced Materials, 2016, 8, 164-170
     
    23.   Cho. E.; Park. G.W.; Lee. J.W.; Cho. S.M.; Kim T.; Kim. J.; Choi. W.*; Ohm. W.S.; Kang. S.*; "Effect of alumina composition and surface integrity in alumina/epoxy composites on the ultrasonic attenuation properties", Ultrasonics, 2016, 66, 133-139
    2015
     
    22.   Hwang. H.Y.; Lee. K.Y.; Yeo. T.H.; Choi. W.*; "Investigation of structural and chemical transitions in copper oxide microstructures produced by combustion waves in a mixture of CuO–Cu2O–Cu and fuel", Applied Surface Science, 2015, 359, 931-938
     
    21.   Lee. K.Y.; Hwang. H.Y.; Shin. D.J.; Choi. W.*; "Manipulation of Combustion Waves in Carbon-Nanotube/Fuel Composites by Highly Reactive Mg Nanoparticles", Nanoscale, 2015, 7, 17071-17078
     
    20.   Lee. K.Y.; Hwang. H.Y.; Choi. W.*; "Phase Transformation of Cobalt Oxide in CoxOy-ZnO Multi-Pod Nanostructures via Combustion from Thermopower Waves", Small, 2015, 11 (36), 4762-4773
     
    19.   Yeo. T.H.; Hwang. H.Y.; Cho. Y.H.; Shin. D.J.; Choi. W.*; "Voltage Amplification of Thermopower Waves via Current Crowding at High Resistances in Self-Propagating Combustion Waves", Nanotechnology, 2015, 26, 305402
     
    18.   Hwang. H.Y.‡; Yeo. T.H.‡; Cho. Y.H.; Shin. D.J.; Choi. W.*; "Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-Walled Carbon Nanotubes in the Study of Thermopower Waves", Journal of Visualized Experiments, 2015, 98, e52818
     
    17.   Lee. K.Y.‡; Hwang. H.Y.‡; Shin. D.J.; Choi. W.*; "Enhanced Thermopower Wave via Nanowire Bonding and Grain Boundary Fusion in Combustion of Fuel/CuO-Cu2O-Cu Hybrid Composites", Journal of Materials Chemistry A, 2015, 3, 5457-5466
     
    16.   Kim. B.Y.; Kim. H.C.; Yoon. K.J.; Lee. J.H.; Kim. B.K.; Choi. W.; Lee. J.H.; Hong. J.S*; "Reactions and Mass Transport in High Temperature Co-Electrolysis of Steam/CO2 Mixtures for Syngas Production", Journal of Power Sources, 2015, 280, 630-639
     
    15.   Seo. G.H.; Hwang. H.Y.; Yoon. J.W.; Yeo. T.H.; Son. H.H.; Jeong U.; Jeun. G.D.; Choi. W.*; Kim. S.J.*; "Enhanced Critical Heat Flux with Single-Walled Carbon Nanotubes Bonded on Metal Surfaces", Experimental Thermal and Fluid Science, 2015,  60, 138-147
    ~ 2014
     
    14.   Yeo. T.H.; Hwang. H.Y.; Lee. D.C.; Lee. K.Y.; Hong. J.S, Song, C.; Choi. W.*; "Effects of Chemical Fuel Composition on Energy Generation from Thermopower Waves", Nanotechnology, 2014, 25, 445403
     
    13.   Hwang. H.Y.; Yeo. T.H.;  Um. J.E.; Lee. K.Y.; Kim. H.S.; Han. J.H.; Kim. W.J. ; Choi. W.*; "Investigation of Effect of the Structure of Large-Area Carbon-Nanotube/Fuel Composites on Energy Generation from Thermopower Waves", Nanoscale Research Letters, 2014, 9, 536
     
    12.   Lee. K.Y.; Hwang. H.Y.; Choi. W.*; "Advanced Thermopower Wave in Novel ZnO Nanostructures/Fuel Composite", ACS Applied Materials & Interfaces, 2014, 6 (17), 15575-15582
     
    11.   Choi. W.; Ulissi. Z.; Shimizu. S.; Bellisario. D.;Ellison. M.; Strano. M. S. "Diameter Dependent Ion Transport through the Interior of Single Isolated Single Walled Carbon Nanotubes", Nature Communications, 2013, 4, 2397
     
    10.   Abrahamson. J. T.; Sempere. B.; Walsh. P. M.; Forman. J. M.; Sen. F.; Sen. S.; Mahajan. G. S.; Paulus. L. G; Choi. W.; Strano. M. S. “Excess thermopower and the theory of thermopower waves ", ACS Nano, 2013, 7 (8), 6533-6544
     
    9.     Choi. W.*; Hong. J.*; "Rapid Electromechanical Transduction on a Single-Walled Carbon Nanotube Film: Sensing Fast Mechanical Loading via Detection of the Electrical Signal Change", Industrial & Engineering Chemistry Research, 2012, 51 (45), 14714–14721
     
    8.      Shimizu. S.; Choi. W.; Abrahamson. J. T.; Strano. M. S. "New concepts in molecular and energy transport within carbon nanotubes: Thermopower waves and stochastically resonant ion channels", Physica Status Solidi B-Basic Solid State Physics, 2011, 248 (11), 2445-2448.
     
    7.      Abrahamson. J. T.; Song. C.; Hu. J. H.; Forman. J. H.; Mahajan. S. G.; Nair. N.; Choi. W.; Lee. EJ. Strano. M. S. "Synthesis and Energy Release of Nitrobenzene-Functionalized Single-Walled Carbon Nanotubes", Chemistry of Materials, 2011, 23 (20), 4557-4562.
     
    6.      Abrahamson. J. T.; Choi. W.; Schonenbach, N. S.; Park. J.; Han. J. -H.; Walsh. M. P.; Kalantar-Z. K.; Strano. M. S. "Wave Front Velocity Oscillation of Carbon Nanotube-Guided Thermopower Waves:Nanoscale Alternating Current Sources", ACS Nano, 2011, 5 (1), 367-375.
     
    5.      Choi. W.; Lee. C.Y.; Ham. M. H.; Shimizu. S.; Strano. M. S. "Dynamics of Simultaneous, Single Ion Transport through Two Single-Walled Carbon Nanotubes: observation of a three-state system", Journal of the American Chemical Society, 2011, 133 (2), 203-205.
     
    4.      Ham. M. H.; Paulus. G. L. C.; Lee. C. Y.; Song. C.; Kalantar-Z. K.; Choi. W.; Han. J. -H.; Strano. M. S. "Evidence for High Efficiency Exciton Dissociation at the polymer/Single Walled Carbon Nanotube Interfaces in Planar Nano-Heterojunction Photovoltaics", ACS Nano 2010, 4, 6251-6259.
     
    3.      Choi. W.; Abrahamson. J. T.; Strano. J. M.; Strano. M. S. "Carbon Nanotube-Guided Thermopower Waves", Materials Today, 2010, 13(10), 22-23.
     
    2.      Lee. C.Y.; Choi. W.; Han, J –H.; Strano. M. S. "Coherence Resonance in Single-Walled Carbon Nanotube Ion Channel", Science, 2010, 329, 1320-1324.
     
    1.      Choi. W.; Hong. S.; Abrahamson. J. T.; Han. J. -H.; Song. C.; Nair. N.; Baik. S.; Strano. M. S. "Chemically Driven, Carbon Nanotube-Guided Thermopower Waves", Nature Materials, 2010, 9, 423-429.

  • Research

    Well designed hybrid structures from nano-microscale to macroscale contribute to further manipulation of thermal-fluidic-energy transport making them useful in many applications. Our research interests  lie in utilizing thermal-fluidic-energy transport within hybrid structures.
     
    (1) Multiscale Platforms for Active Control of Thermal & Fluidic transport and Their Applications
     
    a. Multiscale-textured surfaces and structures for phase change heat transfer: Design of multi-porous structures for further controls of heat transfer coefficient and critical heat flux
     
    b. Fluidic transport through nanopores and nanochannels:  Fabrication of nanopore-channel platforms and study of underlying physics of ion transport for mass transport and nanofluidic sensing applications 
     

     

    (2) Structure-Guided Combustion Waves (SGCWs) driven Thermal-Chemical-Electrical Energy Conversion for Energy Applications
     
    a. Active manipulation of materials via SGCWs:  Facile one-pot transformation of phase / surface / porosity / composition with controlled organic layer coating for metal oxides for energy applications
     
    b. Thermopower waves in SGCWs: Electrical energy generation utilizing thermally-chemically induced charge transport through hybrid materials in propagating combustion
     
    (3) Thermal Metamaterials for Local Heat Flux Manipulation
     
    a. Tunable-multifunctional-reconfigurable thermal metamaterials: Assembly design of unit-cells components with diverse thermal functions in macroscale and fabrication in 2D and 3D structures
     
    b. Applications of thermal metamaterials for local heat flux manipulation: Thermal energy focusing-dissipating-diffusing-rotating using hybrid structures
     
     
    (4) Thermal Analysis of Multiphysics-Multiscale Systems
     
    a. Hybrid analysis of multiscale systems including thermal transport: Photo-thermal, thermal-electrical, chemical-thermal-electrical energy conversion
     
    b. Applications to multiphysics-multiscale systems: Super resolution near-field structure for nanolithography systems, solid-oxide fuel cells, thermoelectrics, and planar heating elements.

     

     

    (5) Self-Sustained Thermal-Fluidic Sensing Platform (Energy Harvesting and Sensors)
     
    a. Dual-function sensors for electrical energy generation and sensing of thermal-fluidic transport phenomena: Thermolelectrics, pyroelectrics, triboelectrics, piezoelectrics  

     

    b. Applications to various chemical-physical sensors with self-powered functions: Fluid temperature-flow sensors, pH sensors, fluid dynamics and others

     

     

  • Teaching

    Spring, 2018
     
    수치해석 (Numerical Analysis) 
    열역학특론 (Advanced Thermodynamics)
     
    Fall, 2017
     
    응용열전달 (Applied Heat Transfer) 
    열전달특론 (Advanced Heat Transfer)
    창의설계 (Creative Design)
     
    Spring, 2017
     
    수치해석 (Numerical Analysis) 
    기계공학세미나 1 (Mechanical Engineering Seminar 1)
     
    Fall, 2016
     
    열전달특론 (Advanced Heat Transfer) 
    컴퓨터 언어 및 실습 (Computer Language and Lab)
    창의설계 (Creative Design)
     
    Spring, 2016
     
    열전달 (Heat Transfer)
    수치해석 (Numerical Analysis) 
     
    Fall, 2015
     
    열전달특론 (Advanced Heat Transfer) 
    컴퓨터 언어 및 실습 (Computer Language and Lab)
     
    Spring, 2015
     
    수치해석 (Numerical Analysis) 
    공업수학 1 (Engineering Mathematics 1)
     
    Fall, 2014
     
    열전달특론 (Advanced Heat Transfer) 
    컴퓨터 언어 및 실습 (Computer Language and Lab)
     
    Spring, 2014
     
    수치해석 (Numerical Analysis) 
    공업수학 1 (Engineering Mathematics 1)
     
    Fall, 2013
     
    열전달특론 (Advanced Heat Transfer) 
    컴퓨터 언어 및 실습 (Computer Language and Lab)
     
    Spring, 2013
     
    수치해석 (Numerical Analysis) 
    공업수학 1 (Engineering Mathematics 1)
     
    Fall, 2012
     
    응용유체역학 (Applied Fluid Mechanics) 
    컴퓨터 언어 및 실습 (Computer Language and Lab)
     

     

  • Lab Members

    현재 연구실에서는 함께 일할 대학원생, 학부 연구생을 모집하고 있습니다. 기계공학의 전통 분야인 열,유체, 열전달 분야와 최근 활발하게 연구가 이루어지고 있는 나노/에너지 분야의 융복합 연구에 관심이 있는 학생들의 많은 연락 바랍니다. (wojchoi@korea.ac.kr)

     
    We are currently looking for postdoc, graduate students, undergraduate students who are interested in the convergence research between thermal-fluid engineering and nano/energy research. Interested applicants should contact me by email. (wojchoi@korea.ac.kr)
     
     
    박사 과정 (PhD Program)
            
            황하영 (2013.03~Present)
                고려대학교 공과대학 기계공학부 박사 과정
     
     
    석박사 통합 과정 (MS/PhD Program)
     
            여태한 (2013.09~Present)
                고려대학교 공과대학 기계공학부 석박사 과정
     
            조용환 (2014.03~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            이상혁 (2014.09~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            신동준 (2014.09~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            이상준 (2015.03~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            서병석 (2016.03~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            서경범 (2016.09~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            이재민 (2017.03~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            김세준 (2017.03~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            박성현 (2017.03~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            이재호 (2018.03~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            김태원 (2018.03~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
            차종환 (2018.03~Present)
                고려대학교 공과대학 기계공학부 석박사 통합 과정
     
     
    석사 과정 (MS Program)
     
            송찬호 (2016.03~Present)
                고려대학교 공과대학 기계공학부 석사 과정
     
     
    학부 연구생     
     
            김남일
                고려대학교 공과대학 기계공학부 학부 과정
     
            신창민
                고려대학교 공과대학 기계공학부 학부 과정
     
     
    연구원     
     
            차영선 (2018.01~Present)
     
     
    Alumni
     
            박태영 (2016.03~2018.02)
                석사 졸업 (고려대학교 공과대학 기계공학부)     
                현소속: LG 화학
     
            강성구 (2016.03~2018.02)
                석사 졸업 (고려대학교 공과대학 기계공학부)     
                현소속: LG 전자
     
            신중호 (2015.03~2017.02)
                석사 졸업 (고려대학교 공과대학 기계공학부)     
                현소속: 현대자동차
     
            이승현 (2015.03~2017.02)
                석사 졸업 (고려대학교 공과대학 기계공학부)     
                현소속: LG 전자
     
            박관우 (2014.03~2016.02)
                석사 졸업 (고려대학교 공과대학 기계공학부)     
                현소속: Apple (애플)
            
            이상웅 (2012.12~2015.02)
                석사 졸업 (고려대학교 공과대학 기계공학부)
                현소속: 금호타이어
     
            이강열 PhD (2013.12~2016.06)
                박사 후 연구원 (고려대학교 공과대학 기계공학부)
     
            윤창석 (2013.09~2014.02)
                학부 연구원 (고려대학교 공과대학 기계공학부)
     
            임다현 (2013.06~2014.04)
                학부 연구원 (고려대학교 공과대학 기계공학부)
     
            박수정 (2014.03~2014.08)
                학부 연구원 (고려대학교 공과대학 기계공학부)