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PUBLICATIONS

Before 2010

  • 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).
  • 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.
  • 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.
  • 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, December 2008.
  • 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.
  • (NON – SCI) 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.
  • (NON – SCI) 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.
  •  (Need to Verify if NON – SCI) 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.
  • (Need to Verify if NON – SCI)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.
  • (Need to Verify if NON – SCI) 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.
  • (Need to Verify if NON – SCI) 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.
  • (Need to Verify if NON – SCI) 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.
  • (Need to Verify if NON – SCI) 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.
  • (Need to Verify if NON – SCI) 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.