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PUBLICATIONS

International Journal

  • Kyeong Ha Lee, Seung Guk Baek, Hyjk Jin Lee, Hyouk Ryeol Choi, Hyngpil Moon, Ja Choon Koo, “Enhanced Transparency for Physical Human-Robot Interaction Using Human Hand Impedance Compensation,” IEEE/ASME Transactions on Mechatronics, January, 2018.
  • Ki Seok Song, Seung Guk Bae k, Yeon-Sun Choi, Ja Choon Koo, “Effect of conicity on lateral dynamic characteristics of railway vehicle through scaled wheelset model development,” Journal of Mechanical Science and Technology, November, 2018.
  • Kihyeon Kim, Hyeong Ho Cho, Ho Sang Jung, Sang Yul Yang, Youngeun Kim, Jae Hyeong Park, Hoyoung Jang, Jae-Do Nam, Ja Choon Koo, Hyungpil Moon, Ji Won Suk, Hugo Rodrigue, Hyouk Ryeol Choi, “Double Helix Twisted and Coiled soft Actuator from Spandex and Nylon,” Advanced Engineering Materials, August, 2018.
  • Ho Sang Jung, Kyeong Ho Cho, Jae Hyeong Park, Sang Yul Yang, Youngeun Kim, Kihyeon Kim, Canh Toan Nguyen, Hoa Phung, Phi Tien Hoang, Hyungpil Moon, Ja Choon Koo and Hyouk Ryeol Choi, “Musclelike joint mechanism driven by dielectric elastomer actuator for robotic applications,” SMART MATERIALS AND STRUCTURES, May, 2018.
  • Sung Joon Kim, Seung Guk Baek, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “Development of a capacitive slip sensor using internal air gap,” Microsystem Technologies, May, 2018.
  • Tuan Anh Luong, KyeongHo Cho, MinGeun Song, Ja Choon Koo, HyoukRyeol Choi, HyungPil Moon, “Nonlinear Tracking Control of a Conductive Supercoiled Polymer Actuator,” Soft Robotics, April, 2018.
  • Seung Guk Baek, Sanghoon Ji, Ja Choon Koo, “Experimental study of electro-hydraulic actuator with payload for precision motion control,” Microsystem Technologies, March, 2018.
  • Zheng Yuan Li, Sungsoo Ryo, Hyuk Jin Lee, Young-Nam Kang, Sangdeok Park, Ja Choon Koo, “A real time cost effective geometry calibration method for isocenter tracking of a rotating gantry using optical vision sensors,” Microsystem Technologies, November, 2017.
  • Sung Joon Kim, Do-Yeon Hwang, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “Developement of a resistive compact slip sensor using dielectric elastomer,” Microsystem Technologies, November, 2017.
  • Won Suk You, Byung June Choi, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Robotic laboratory automation platform based on mobile agents for clinical chemistry,” Journal of Intelligent Service Robotics, October, 2017.
  • Ye Chan Kim, Hyunsung Min, Sungyong Hong, Mei Wang, Hanna Sun, In-kyung Park, Hyouk Ryeol Choi, Ja Choon Koo, Hyungpil Moon, Kwang J Kim, Jonghwan Suhr, Jae-Do Nam, “Multi-step cure kinetic moedl of ultra-thin glass fiber epowy prepreg exhibiting both autocatalytic and diffusion-controlled regimes under isothermal and dynamic-heating conditions,” Korea-Australia Rheology Journal, August, 2017.
  • Byung-jin Jung, Byungchul Kim, Ja Choon Koo, Hyouk Ryeol Choi, Hyungpil Moon, “Joint Torque Sensor Embedded in Harmonic Drive Using Order Tracking Method for Robotic Application,” IEEE/ASME Transactions on Mechatronics, April, 2017.
  • Jungwoo Park, Ji Wang Yoo, Hee Won Seo, Youngkwan Lee, Jonghwan Suhr, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, Robert Hunt, Kwang Jin Kim, Soo Hyun Kim, Jae-Do Nam, “Electrically controllable twisted-coiled artificial muscle actuators using surface-modified polyester fibers,” Smart Materials and Structures, March, 2017.
  • Kyeong Ho Cho, Young Hoon Jin, Ho Moon Kim, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Multi-functional Robotics Crawler for Inspection of Suspension Bridge Hanger Cables : Mechanism Design and Performance Validation,” IEEE/ASME Transactions on Mechatronics, February, 2017.
  • Ho Sang Jung, Sang Yul Yang, Kyeong Ho Cho, Min Geun Song, Canh Toan Nguyen, Hoa Phung, Uikyum Kim, Hyungpil Moon, Ja Choon Koo, Jae-Do Nam, “Design and Fabrication of Twisted Monolithic Dielectirc Elastomer Actuator,” International Journal of Control, Automation and Systems, January, 2017.
  • Zheng Yuan Li, Yong Seok Ihn, Hyouk Ryeol Choi, Hyungpil Moon, Ja Choon Koo, “An automated focusing method for a parallel micro-manipulator alignment,” Microsystem Technologies, June, 2016
  • Hoa Phung, Canh Toan Nguyen, Tien Dat Nguyen, Choonghan Lee, Uikyum Kim, Donghyouk Lee, Jae-do Nam, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Tactile display with rigid coupling based on soft actuator,” Soft Mechatronics, November, 2015
  • Fengyi Liu, Yong Bum Kim, Gun Kyu Yee, Won Suk You, Gi Tae Kang, An Na Kim, Young Hun Lee, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Computation of Minimum Contact Forces of Multi ngered Robot Hand with Soft Fingertips,” Intelligent Service Robotics, October, 2015
  • Yong Bum Kim, Gitae Kang, Gun Kyu Yee, ANNA Kim, Won Suk You, Young Hun Lee, Fengyi Liu, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Exploration and reconstruction of unknown object by active touch of robot hand,” Intelligent Service Robotics, July, 2015
  • Jae Hyeon Kim, Hyun-Suck Yoon, Hyungpil Moon, Hyouk Ryeol Choi and Ja Choon Koo, “Application of a sensor fusion algorithm for improving grasping stability,” Journal of Mechanical Science and Technology, July, 2015
  • Zheng Yuan Li, Jong Yoon Choi, Yong Seok Ihn, Sang-Hoon Ji, Ja Choon Koo, “Parallel Micro Manipulator for Optical Spot Array Alignment of Maskless Lithography,” Microsystem Technologies, May, 2015
  • Jong Yoon Choi, Sae Whan Park, Yong Seok Ihn, Hyouk Ryeol Choi, Hyungpil Moon, Ja Choon Koo, “Optical head alignment method using serial manipulators for maskless lithography system,” Microsystem Technologies, May, 2015
  • Ig Mo Koo, Tran Duc Trong, Yoon Haeng Lee, Hyungpil Moon, Jachoon Koo, Sangdoek Park, Hyouk Ryeol Choi, “Biologically inspired gait transition control for a quadruped walking robot,” Autonomous Robots, January, 2015
  • Byung-jin Jung, Ja Choon Koo, Hyouk Ryeol Choi, Hyungpil Moon, “Human-Robot Collision Detection under Modeling Uncertainty using Frequency Boundary of Manipulator Dynamics,” Journal of Mechanical Science and Technology, November, 2014
  • Sanghoon Kim, Ji-Beom Yoo, Gi-Ra Yi, Youngkwan Lee, Hyouk Ryeol Choi, Ja Choon Koo, Joon-Suk Oh, and Jae-Do Nam, “An aggregation-mediated assembly of graphene oxide on amine-functionalized poly(glycidyl methacrylate) microspheres for core?shell structures with controlled electrical conductivity,” Journal of Materials Chemistry C, June, 2014
  • Duc Trong Tran, Ig Mo Koo, Yoon Haeng Lee, Hyungpil Moon, Sangdeok Park, Ja Choon Koo, Hyouk Ryeol Choi, “Central Pattern Generator Based Reflexive Control of Quadruped Walking Robots Using a Recurrent Neural Network,” Robotics and Autonomous Systems, June, 2014
  • Yong Seok Ihn, Sang?Hoon Ji, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “Kinematic design of a redundant parallel mechanism for maskless lithography optical instrument manipulations,” Microsystem Technologies, March, 2014
  • Duc Trong Tran, Ig Mo Koo, Yoon Haeng Lee, Hyungpil Moon, Jachoon Koo, Sangdeok Park, Hyouk Ryeol Choi, “Motion Control of a Quadruped Robot in Unknown Rough Terrain using 3D Spring Damper Leg Model,” International Journal of Control, Automation, and Systems, April, 2014
  • Canh Toan Nguyen, Hoa Phung, Tien Dat Nguyen, Choonghan Lee, Uikyum Kim, Donghyouk Lee, Hyungpil Moon, Jachoon Koo, Jae-do Nam and Hyouk Ryeol Choi, “A small biomimetic quadruped robot driven by multistacked dielectric elastomer actuators,” Smart Materials and Structures, April, 2014
  • Min Jeong Kim, Mina Choi, Yong Bum Kim, Fengyi Liu, Hyungpil Moon, Ja Choon Koo, and Hyouk Ryeol Choi, “Exploration of unknown object by active touch of robot hand,” International Journal of Control, Automation and Systems, May, 2014
  • Won Suk You, Byung June Choi, Hyouk Ryeol Choi, Ja Choon Koo, Hyungpil Moon, “Localization Using Magnetic Patterns for Autonomous Mobile Robot,” INTERNATIONAL JOURNAL OF ADVANCED ROBOTIC SYSTEMS, March, 2014
  • Ig Mo Koo, Doc Trong Tran, Yoon Haeng Lee, Hyungpil Moon, Ja Choon Koo, Sangdeok Park, Hyouk Ryeol Choi, “Development of a Quadruped Walking Robot AiDIN-Ⅲ using Biologically Inspired Kinematic Analysis,” International Journal of Control, Automation, and Systems, December, 2013, Vol. 11, ISSN 1598-6446
  • Hyung Seok Lee, Hoa Phung, Dong-Hyuk Leea, Ui Kyum Kim, Canh Toan Nguyen, Hyungpil Moon, Ja Choon Koo, Jae-do Nam, Hyouk Ryeol Choi, “Design analysis and fabrication of arrayed tactile display based on dielectric elastomer actuator,” Sensors and Actuators A: Physical, November, 2013, Vol. 205, ISSN 0924-4247
  • Young-Boo Son, Seung Hoon Shin, Sang-Hoon Ji, Yeon-Sun Choi, Ja Choon Koo, “A self-alignment crowned pulley design for high speed paper media transport systems,” Microsystem Technologies 19:1433?1440 September 2013 DOI 10.1007/s00542-013-1832-x
  • Se-Chang Kim, Dae-Geun Cho, Tae-Gyu Kim, Se-Hun Jung, Ja-Choon Koo, Moon-Ki Kim, Jae-Boong Choi, “Finite Element Analysis for Shock Resistance Evaluation of Cushion-Packaged Multifunction Printer Considering Internal Modules,” ASME Journal of Electronic Packaging, DECEMBER 2013, Vol. 135, ISBN 1043-7398
  • Kyeong Ho Cho, Ho Moon Kim, Young Hoon Jin, Fengyi Liu, Hyungpil Moon, Ja Choon Koo, and Hyouk Ryeol Choi, “Inspection Robot for Hanger Cable of Suspension Bridge: Mechanism Design and Analysis,” IEEE/ASME TRANSACTIONS ON MECHATRONICS
  • Uikyum Kim, Junmo Kang, Choonghan Lee, Hyeok Yong Kwon, Soonhwi Hwang, Hyungpil Moon, Ja Choon Koo, Jae-Do Nam, Byung Hee Hong, Jae-Boong Choi, and Hyouk Ryeol Choi, “A transparent and stretchable graphene-based actuator for tactile display.” Nanotechnology 24 (2013) 145501 doi:10.1088/0957-4484/24/14/145501, March 2013.
  • Ig Mo Koo, Tran Duc Trong, Yoon Haeng Lee, Hyungpil Moon, Jachoon Koo, Sun Kyu Park, Hyouk Ryeol Choi, “Development of Wall Climbing Robot System by Using Impeller Type Adhesion Mechanism,” Journal of Intelligent and Robotic Systems, DOI 10.1007/s10846-013-9820-z AS OF March 4, 2013 ONLINE PUBLICATION
  • Seung-Guk Baek, Bumsik Shin, Sang Won Lee, Yeon-Sun Choi, Jinhyun Kim and Ja Choon Koo, “Optimization of high speed EMU suspension parameters for vibration reduction,” Journal of Mechanical Science and Technology 27 (2) (2013) 305-311, DOI 10.1007/s12206-012-1246-1
  • Dong-Hyuk Lee, Hyungpil Moon, Ja Choon Koo, and Hyouk Ryeol Choi, “Map Building Method for Urban Gas Pipelines Based on Landmark Detection,” International Journal of Control, Automation, and Systems February 2013, 11(1):127-135 DOI 10.1007/s12555-012-0049-6
  • Canh Toan Nguyen, Ngoc Linh Nguyen, Hyungseok Lee, Daegyeong Kim, Choonghan Lee, Hyungpil Moon, Ja Choon Koo, Jae-do Nam, JeongHeon Han, and Hyouk Ryeol Choi, “Enhancement of Transduction Performance of a Dielectric Elastomer Actuator Based on Acrylonitrile Butadiene Rubber” Macromolecular Research, DOI 10.1007/s13233-013-1013-x, January, 2013
  • Joon-Suk Oh, Taeseon Hwang, Gi-Yong Nam, Jung-Pyo Hong, Ah-Hyun Bae, Sang-Ik Son, Geun-Ho Lee, Hak kyung Sung, Hyouk Ryeol Choi, Ja Choon Koo Jae-Do Nam, “Chemically-modified graphene sheets as an active layer for eco-friendly metal electroplating on plastic substrates, “Thin solid films, vol. 521, pp. 270 ~ 274, 2012.10.
  • Seonggi Kim, Baek-chul Kim, Ja Choon Koo, Hyouk Ryeol Choi, Hyungpil Moon, “Film-type single axis tactile sensor with various thicknesses using nitrile butadiene rubber,” Thin Solid Films 521 (2012) 65?68, October, 2012
  • Yong Seok Ihn, Sang-Hoon Ji, Hyungpil Moon, Hyouk Ryeol Choi, and Ja Choon Koo, “A dual step precision multi-DOF stage for maskless digital lithography,” Microsystem Technologies 18:1741?1750, July 2012, DOI 10.1007/s00542-012-1619-5
  • Sang-ik Son, David Pugal, Taeseon Hwang, Hyouk Ryeol Choi, Ja Choon Koo, Yooungkwan Lee, Kwang Kim, and Jae-Do Nam, “Electromechanically driven variable-focus lens based on transparent dielectric elastomer,” Applied Optics, Vol. 51, No. 15, pp 2987-2996, May 2012
  • Joon Shik Yoon, Jin Hwan Choi, Sungsoo Rhim, and Ja Choon Koo, “Particle Dynamics Integration to Multibody Dynamics Using Graphics Processing Unit,” Advanced Science Letters, Vol. 8, pp. 366-370, April 2012, ISSN: 1936-6612
  • Jong Hoon Lee, Sun Hye Kim, Doo Ho Cho, Se Chang Kim, Seung Guk Baek, Jong Gu, Jun Mo Kang, Jae Boong Choi, Chang Sung Seok, Moon Ki Kim, Ja Choon Koo, Byeong Soo Lim, “Tribological Properties of Chemical Vapor Deposited Graphene Coating Layer,” korea journal of metals and materials, Vol. 50, No. 3, pp. 206-211, March, 2012
  • Tri Cong Phung, Min Jeong Kim, Hyungpil Moon, Ja Choon Koo, and Hyouk Ryeol Choi, “Exploration of Local Surface Geometry with Minimum Number of Contact Points and Surface Normal Information,” International Journal of Control, Automation, and Systems, 10(2):383-395, March 2012, DOI 10.1007/s12555-012-0218-7
  • Baek-Chul Kim, Youngkwan Lee, Jae-Do Nam, Hyungpil Moon, Hyouk Ryeol Choi, and Ja Choon Koo, “Smart Material Actuators for Micro Optical Zoom Lens Driving Systems,” IEEE TRANSACTIONS ON MAGNETICS, VOL. 47, NO. 7, pp 1999-2004, DOI 10.1109/TMAG.2011.2129556, JULY 2011.
  • Dongho Oh, Seung Hoon Shin, Ja Choon Koo, “A hybrid observer for characterization and compensation of periodic disturbances,” Microsystem Technologies, Vol 17, No 5-7, pp :1207?1213, DOI 10.1007/s00542-011-1290-2, June 2011.
  • Yoo Chang Kim, Yong Seok Ihn, Hyungpil Moon, Kyung Tae Nam, Sang Moo Lee, Hyouk Ryeol Choi, Ja Choon Koo, “Low cost dual axis micro force sensor for robotic manipulations,” Microsystem Technologies, Vol 17, No 5-7, pp 1197-1205, DOI: 10.1007/s00542-011-1269-z, June 2011.
  • Nguyen Huu Chuc, Nguyen Huu Lam Vuong, Duk Sang Kim, Hyung Pil Moon, Ja Choon Koo Young Kwan Lee, Jae-Do Nam, and Hyouk Ryeol Choi, “Fabrication and Control of Rectilinear Artificial Muscle Actuator,” IEEE/ASME TRANSACTIONS ON MECHATRONICS, Vol. pp, No. 99, pp 1 ? 10, March, 2010.
  • Y. S. Ihn, S. K. Kim, Dongho Oh, M. E. Kim, and Ja Choon Koo, “Non-contact measurement method of mechanical stiffness for high revolutionary speed precision fluid dynamic bearing rotors,” Microsystem Technologies, Vol. 16, pp 233 ? 240, January, 2010.
  • Joonsuk Oh, Jun-Ho Lee, Ja Choon Koo, Hyoukryeol Choi, Youngkwan Lee, Taesung Kim, Nguyen Dang Luong, and Jae-Do Nam, “Graphene oxide porous paper from amine-functionalized poly(glycidyl methacrylate)/graphene oxide core-shell microspheres,” Journal of Materials Chemistry, Vol. 20, No. 41, pp 9200 ? 9204, August, 2010.
  • Huu Chuc Nguyen, Nguyen Huu Lam Vuong, DukSang Kim, Hyungpil Moon, Ja Choon Koo, Youngkwan Lee, Jae-do Nam and Hyouk Ryeol Choi, “Design and Control of a Multi-jointed Robot Finger Driven by an Artificial Muscle Actuator,” Advanced Robotics Vol. 24, pp. 1983?2003, October 2010.
  • Misuk Cho, Chae Seok Choi, So Jung Lee, Suk Wang Yoon, Ja Chun Koo, and Youngkwan Lee, “Fabrication of Polyurethane-sheet Acoustic Windows and Their Mechanical and Acoustic Properties in Water,” Polymer(Korea), Vol. 34, No. 2, pp 104-107, 2010 (SCI-E).
  • Tri Cong Phung, Yong Seok Ihn, Ja Choon Koo, and Hyouk Ryeol Choi, “An Enhanced Edge Tracking Method Using a Low Resolution Tactile Sensor,” International Journal of Control, Automation, and Systems 8(2):462-467, April 2010.
  • Tri Cong Phung, Yong Seok Ihn, Ja Choon Koo, and Hyouk Ryeol Choi, “Edge Identification of a Small Object through a Low-Resolution Tactile Sensor Array,” International Journal of Precision Engineering and Manufacturing, Vol. 11, No. 2, pp. 247-254, April 2010.
  • Byung June Choi, Bumsoo Kim, Sung Moon Jin, Ja Choon Koo, Wan Kyun Chung, Hyouk Ryeol Choi and Hyungpil Moon, “Magnetic landmark based position correction technique for mobile robots with hall sensors,” Intelligent Service Robotics, Vol. 3, No. 2, 99-113, March, 2010
  • Seung Hoon Shin, Byung June Choi, Sung Moo Ryew, Jung Woo Kim, Dae Shick Kim, Wan Kyun Chung, Hyouk Ryeol Choi, and Ja Choon Koo, “Development of an Improved Scheduling Algorithm for Lab Test Operations on a Small Size Bio Robot Platform,” Journal of the Association for Laboratory Automation, Vol. 15, No. 1, 2010, pp.15?25, February, 2009.
  • Tangfei Tao, Guanghua Xu, Ja Choon Koo, and Hyouk Ryeol Choi, “Improved Block Matching Approach to Fast Disparity Estimation,” Journal of System Engineering and Electronics, Vol. 20, No. 6, 2009, pp.1278?1285, December 28, 2009 (ISSN: 1004-4132).
  • Dongho Oh, Hyungpil Moon, H. R. Choi , Ja Choon Koo, “A disturbance compensator with enhanced frequency tolerance for the micro-position control of magnetic heads,” Microsystem Technologies, Vol. 15, pp 1557 ? 1561, October 2009.
  • Baek-Chul Kim, S. J. Park, M. S. Cho, Y. Lee, J. D. Nam, H. R. Choi, and J. C. Koo, “Optimization of Mechanical Performance of Oxidative Nano-Particle Electrode NBR Conducting Polymer Actuator,” Journal of Nanoscience and Nanotechnology, Vol 9, No12, pp 7283-7287, December 2009.
  • Y. S. Ihn, J. K. Lee, D. H. Oh, H. S. Lee, and J. C. Koo, “Active Correction of Dynamic Mass Imbalance for a Precision Rotor,” IEEE Transactions on Magnetics, Vol. 45, No. 11, pp. 5088 ? 5093, November, 2009.
  • Tri Cong Phung, Seung Hwa Ha, Yong Seok Ihn, Byung June Choi, Sang Moo Lee, Ja Choon Koo, and Hyouk Ryeol Choi, “An Enhanced Force and Contact Position Sensor for Micro-Manipulations,” International Journal of Control, Automation and Systems Vol. 7 , No. 3, 459-467, June 2009.
  • Jung Kwan Lee, Sang Bong Lee, Hyungpil Moon, Dongho Oh, and J. C. Koo, “An Enhanced Real-time Dynamic Imbalance Correction for Precision Rotors,” Journal of Mechanical Science and Technology, Vol. 23, 1050~1053, April 2009.
  • S.J. Park, M.S. Cho, J.D. Nam, I.H. Kim, H.R Choi, J.C. Koo and Y. Lee, “The linear stretching actuation behavior of polypyrrole nanorod in AAO template,” Sensors and Actuators B Vol. 135, No. 2, 592?596, January 2009.
  • Huu Chuc Nguyen, Vu Thuy Doan, JongKil Park, Ja Choon Koo, Youngkwan Lee, Jae-do Nam, and Hyouk Ryeol Choi, “The effects of additives on the actuating performances of a dielectric elastomer actuator,” Smart Material and Structures, Vol. 18, No. 1, January 2009.
  • Nguyen Huu Chuc, Jachoon Koo, Youngkwan Lee, Jae-do Nam and Hyouk Ryeol Choi , “Artificial Muscle Actuator Based on the Synthetic Elastomer,” International Journal of Control, Automation, and Systems ,Vol. 6, No. 6, pp 894-903, December 2008.
  • Ig Mo Koo, Kwangmok Jung, Ja Choon Koo, Jae-Do Nam, Young Kwan Lee, Hyouk Ryeol Choi, “Development of Soft-Actuator-Based Wearable Tactile Display,” IEEE Transaction on Robotics, Vol. 24, No. 3, pp. 549-558, June 2008.
  • Byung June Choi, Sung Moon Jin, Seung Hoon Shin, Ja Choon Koo, Sung Moo Ryew, Jin Hyun Kim, Woong Hee Son, Ki Tak Ahn, Wankyun Chung, and Hyouk Ryeol Choi, “Development of Flexible BioRobot Platform for Integrated Clinical Test,” Journal of American Lab Automation, No. 2, pp. 90 ? 96, April 2008.
  • Dong Ouk Kim, Min Hye Lee, Jun Ho Lee, Tae-Woo Lee, Kwang Jin Kim, Young Kwan Lee, Taesung Kim, Hyouk Ryeol Choi, Ja Choon Koo, Jae-Do Nam, “Transparent flexible conductor of poly(methylmethacrylate) containing highly-dispersed multiwalled carbon nanotube,” Organic Electronics, Vol.9 pp. 1?13, February 2008.
  • Misuk Cho, Hyunjoo Seo, Jedo Nam, Hyoukryeol Choi, Jachoon Koo, Youngkwan Lee, “High ionic conductivity and mechanical strength of solid polymer electrolytes based on NBR/ionic liquid and its application to an electrochemical actuator,” Sensors and Actuators B, vol. 128, pp. 70-74, December 2007.
  • M. S. Cho, H. S. Seo, J. D. Nam, Y. Lee, H. R. Choi, J. C. Koo, and Y. Son, “Characteristics of PEDOT/NBR/PEDOT Solid Actuator Depending on the NBR Polarity,” Molecular Crystals and Liquid Crystals, Vol. 472, pp. 289?296, August 2007.
  • Ja Choon Koo, Kwang Mok Jung, Jong Kil Park, Jae Do Nam, Young Kwan Lee, Jae Wook Jeon, and Hyouk Ryeol Choi, “Representation of a Conceptual Design for a Rectilinear Motion Polymer Actuator,” International Journal of Control, Automation, and Systems, vol. 5, no. 4, pp. 429-435, August 2007.
  • Kwangmok Jung, Ja Choon Koo, Jae-do Nam, Young Kwan Lee, and Hyouk Ryeol Choi, “Artificial annelid robot driven by soft actuators,” BIOINSPIRATION & BIOMIMETICS, vol. 2, pp. s42-s49, June 2007.
  • Gyu-Seok Song, Jun-Ho Lee, Seung-Boo Jung, Youngkwan Lee, Hyouk Ryeol Choi, Ja Choon Koo, Seong-Woo Kim, Jae-Do Nam, “Dynamic t-Tdyn-Tg diagram analysis of thermal isomerization of polyisoimide using complex electric modulus properties,” Polymer, vol. 48, n. 11, pp. 3248-3255, May 2007.
  • Dongho Oh, J. C. Koo, Sangmin Suh “A robust adaptive feedforward method for the compensation of harmonic disturbances,” Microsystem Technologies, Vol. 13, no. 8, pp. 1261-1269, May 2007.
  • T. L. Troung, N. D. Luong, J. D. Nam, Y. Lee, H. R. Choi, J. C. Koo, H. H. Nguyen, “Poly Vapor-Phase Polymerization on Glass Substrate for Enhanced Surface Smoothness and Electrical Conductivity,” Macromolecular Research, Vol. 15, No. 5, pp 465-468, April 2007.
  • Kwangmok Jung, Joonho Lee, Misuk Cho, Ja Choon Koo, Jae-do Nam, Youngkwan Lee, and Hyouk Ryeol Choi, “Development of enhanced synthetic elastomer for energy-efficient polymer actuators,” SMART MATERIALS AND STRUCTURES, vol. 16, n. 2, S288?S294, 9 April 2007.
  • M. S. Cho, H. J. Seo, J. D. Nam, H. R. Choi, J. C. Koo, and Y. Lee, “An electroactive conducting polymer actuator based on NBR/RTIL solid polymer electrolyte,” SMART MATERIALS AND STRUCTURES, vol. 16, n. 2, S237?S242, 9 April 2007.
  • H. Cho, D. Bae, J. Choi, and J. C. Koo, “An Efficient General Purpose Contact Search Algorithm using the Relative Coordinate System for Multibody System Dynamics” Solid State Phenomena, vol. 120, pp. 129-134, January 2007.
  • Dongho Oh, Nam Hoon Lee, J. C. Koo, Hyeonki Choi, and Y. S. Choi, “Nonsymmetric groove pattern design for precise micro-spindles,” Key Engineering Materials Vols. 326-328, pp. 1595-1598, September, 2006.
  • S. Y. Kim, M. S. Cho, J. D. Nam, H.R Choi, J. C. Koo, and Y. Lee, “Transparent and conductive PEDOT films on PET substrate using an epoxy acrylate binder,” Key Engineering Materials Vols. 326-328, pp. 1519-1522, September 2006.
  • K.X. Phan, M. S. Cho, J. D. Nam, H.R Choi, J. C. Koo, and Y. Lee, “Preparation of Polydivinylbenzene/Au Core-Shell Beads,” Key Engineering Materials Vols. 326-328, pp. 1515-1518, September 2006.
  • H. R. Choi, Min Young Jung, Nguyen Huu Chuc, Jung Woo Kim, Ig Mo Koo, Kwang Mok Jung, Y. K. Lee, J. D. Nam, J. C. Koo, “Soft Linear Actuator Based on Dielectric Elastomer,” Key Engineering Materials Vols. 326-328, pp. 1387-1390, September 2006.
  • Hyeonki Choi, Min Jwa Seo, Ja Choon Koo, Hyeon Chang Choi, Won Hak Cho, “The Effects of Muscle Forces on Ankle Joint Kinetics during Postural Balance Control,” Key Engineering Materials Vols. 326-328, pp. 871-874, September, 2006.
  • S. H. Lee, S.Y. Lee, M. S. Cho, J. D. Nam, H.R Choi, J. C. Koo, and Y. Lee, “Renewable resource using cellulose derivatives by melt process,” Key Engineering Materials Vols. 326-328, pp. 847-850, September 2006.
  • Byung-Sun Kim, Duck-Jin Lee, J. C. Koo, J. B. Choi, Young-Jin Kim, Jong-Nam Lee, and Young-Bee Chu, “Evaluation of Shockproofness of Small Form Factor Mobile TFT-LCD,” Key Engineering Materials, Vol. 322, pp 1679-1682, September, 2006.
  • M.S. Cho, H.J. Seo, J.D. Nam, H.R Choi, J.C. Koo, K.G. Song, Y. Lee, “A solid state actuator based on the PEDOT/NBR system,” Sensors and Actuators B Vol. 119, pp 621?624, September, 2006.
  • Hyoukryeol Choi, K. M. Jung, M. Y. Jung, J. C. Koo, J. D. Nam, and Y. K. Lee, “Development of a Soft Linear Motion Actuator using Synthetic Rubber,” Key Engineering Materials, Vol. 306-308, pp. 1193-1198, March 2006.
  • J. C. Koo, Kwang-Mok Jung, Min-Young Jung, Hyoukryeol Choi, J. D. Nam, and Y. K. Lee, “Effect of Pre-strain on the Antagonistically Driven Dielectric Polymer Actuator,” Key Engineering Materials, Vol. 306-308, pp. 1187-1192, March 2006.
  • M. S. Cho, J. D. Nam, Y. K. Lee, H. R. Choi, and J. C. Koo, “Dry Type Conducting Polymer Actuator Based on Polypyrrole?NBR/Ionic Liquid System,” Molecular Crystals and Liquid Crystals, Vol. 444, pp. 241?246, January 2006.
  • Seong-In Moon, Chang-Hoi Kim, J. C. Koo, Jae-Boong Choi, Young-Jin Kim, and Yun-Jae Kim, “Simplified Static Analysis for Shock Behavior Evaluation of Thin Glass Plates,” Solid State Phenomena, Vol. 110, pp 263-270, January 2006.
  • J. C. Koo, S. W. Kang, Y. S. Han, and Y. S. Choi, “Numerical Modeling for the Characterization of Flow Excitation for the HDD Disk Vibration Control,” Solid State Phenomena, Vol. 110, pp. 143-150, January 2006.
  • J. C. Koo, H. S. Kim, J. B. Choi, and Y. J. Kim, “Application of Discrete Hamilton’s Equation for Parallel Processing of Impact Problems.” Key Engineering Materials, Vol. 297-300, pp. 716-721, November, 2005.
  • J. C. Koo, Hyouk Ryeol Choi, Min Young Jung, Kwang Mok Jung, J. D. Nam, and Y. K. Lee, “Design and Control of Three DOF Dielectric Polymer Actuator,” Key Engineering Materials, Vol. 297-300, pp. 665-670, November, 2005.
  • M. S. Cho, J. D. Nam, H. R. Choi, J. C. Koo, and Y. Lee, “Preparation of Solid Polymer Actuator Based on PEDOT/NBR/Ionic Liquid,” Key Engineering Materials,. Vol. 297-300, pp. 641-645, November, 2005.
  • Hyouk Ryeol Choi, Kwang Mok Jung, Ja Choon Koo, Jae Do Nam, Young Kwan Lee, and Mi Sook Cho, “Electrostatically Driven Soft Polymer Actuator Based on Dielectric Elastomer,” Key Engineering Materials, Vol. 297-300, pp. 622-627, November, 2005.
  • Hyouk Ryeol Choi, Kangmok Jung, Sungmoo Ryew, Jae-Do Nam, Jaewook Jeon, Ja Choon Koo, and Kazuo Tanie, “Biomimetic Soft Actuator : Design, Modeling, Control, and Applications,” IEEE/ASME Transaction on Mechatronics, Vol. 10, No. 5, pp 581-593, October, 2005.
  • Jong Won Kwak, Ho June Choi, Kwang Mok Jung, Ja Choon Koo, Jae Wook Jeon, Youngkwan Lee, Jae-do Nam, Youngsun Ryew, Hyouk Ryeol Choi, “A Face Robot Actuated With Artificial Muscle Based on Dielectric Elastomer,” Journal of Mechanical Science and Technology, Vol 19, No. 2, pp. 578-588, June 2005.
  • Dongho Oh, Ja Choon Koo, Cheol-Soon Kim, and Yougkyu Byun, “Optimization of Wide-Bandwidth Hard Disk Drive Actuator Design Using Statistical Methods,” IEEE Transactions on Magnetics, Vol. 41, No. 2, pp. 836-841, February 2005.
  • Seong-In Moon, J. C. Koo, Jae-Boong Choi, Young-Jin Kim, Sung-Sik Choi, and Jeoung-Gwen Lee, “A Development of Optimization Tool for Mechanical Shock Proof Design of a Digital Display Panel,” Key Engineering Materials, Vol. 272, pp. 1773-1778, October 2004.
  • Yun-Jae Kim, J. C. Koo, Seong-In Moon, and Young-Jin Kim, “An Effective Method for Measuring Elastic Modulus of Large TFT-LCD Panels,” Key Engineering Materials, Vol. 272, pp. 1767-1772, October 2004.
  • Yun-Jae Kim, J. C. Koo, Seong-In Moon, and Young-Jin Kim, “Simplified Impact Analysis Based on Equivalent Static Analysis for Impact Design of TFT-LCD Panels,” Key Engineering Materials, Vol. 270, pp. 114-119, October 2004.
  • J. C. Koo, and E. P. Fahrenthold, “Discrete Hamilton’s equations for arbitrary Lagrangian-Eulerian dynamics of viscous compressible flow,” Computer Methods in Applied Mechanics and Engineering, Vol. 189,n 3, pp. 875-900, September 15, 2000.
  • E. P. Fahrenthold and J. C. Koo, “Hybrid Particle-Element Bond Graphs for Impact Dynamics Simulation,” Journal of Dynamic Systems, Measurement, and Control, Vol. 122, n. 2, pp. 306-313, June 2000.
  • E. P. Fahrenthold, J. C. Koo,“Discrete Hamilton’s Equations for Viscous Compressible Fluid Dynamics,” Computer Methods in Applied Mechanics and Engineering, Vol. 178, n 1-2, pp 1-22, July 1998.
  • E. P. Fahrenthold and J. C. Koo, “Hamiltonian Particle Hydrodynamics,” Computer Methods in Applied Mechanics and Engineering, Vol. 146, n 1-2, pp 43-52, July 5, 1997.
  • E. P. Fahrenthold and J. C. Koo, “Energy Based Particle Hydrodynamics for Hypervelocity Impact Simulation,” International Journal of Impact Engineering, Vol. 20, n. 1-5, pp 253-264, 1997.