Close
Search
 

PUBLICATIONS

After 2010

  • Seung Guk Baek, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “A New Cam-Follower Safety Joint Mechanism Design Based on Variable-Length Four-Bar Linkage for Robot Safety,” J. Mechanisms Robotics, Vol. 14, No. 1, pp. 011004, February, 2022
  • Kyeong Ha Lee, Seung Guk Baek, Hyuk Jin Lee, Seung Ho Lee, Ja Choon Koo, “Real-time adaptive impedance compensator using simultaneous perturbation stochastic approximation for enhanced physical human–robot interaction transparency,” Robotics and Autonomous Systems, Vol.147, pp.103916, January, 2022
  • Hyuk Jin Lee, Kyeong Ha Lee, Seung Ho Lee, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “Coaxial damping series elastic actuator for improved performance of transmissibility,” Mechatronics, Vol. 80, pp. 102666, December, 2021
  • Eun Jeong Song, Jung Soo Lee, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “A Multi-Curvature, Variable Stiffness Soft Gripper for Enhanced Grasping Operations,” Actuators, Vol. 10, No. 12, pp.316, November, 2021
  • Dong Jun Oh, Seung Guk Baek, Kyung Tae Nam, Ja Choon Koo, “Tracking and Synchronization with Inversion-Based ILC for a Multi-Actuator-Driven Wafer Inspection Cartridge Transport Robot System,” Electronics, Vol. 10, No. 23, pp. 2904, November, 2021
  • Kihyeon Kim, Sang Yul Yang, Jae Hyeong Park, Ho Sang Jung, Jung U Ko, Seong Taek Hwang, Ja Choon Koo, Hyungpil Moon, Hugo Rodrigue, Hyouk Ryeol Choi, “Torque-compensated bundle of artificial muscle to generate large forces,” Materials Research Express, Vol. 8, No. 11, pp.115301, November, 2021
  • Young Hun Lee, Yoon Haeng Lee, Hyunyong Lee, Hansol Kang, Jun Hyuk Lee, Ji Man Park, Yong Bum Kim, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Whole-Body Control and Angular Momentum Regulation using Torque Sensors for Quadrupedal Robots,” Journal of Intelligent & Robotic Systems, Vol. 102, No.3, pp. 66, June, 2021
  • Tuan Luong, Kihyeon Kim, Sungwon Seo, Jeongmin Jeon, Chanyong Park, Myeongyun Doh, Ja Choon Koo, Hyouk Ryeol Choi, Hyungpil Moon, “Long Short Term Memory Model Based Position-Stiffness Control of Antagonistically Driven Twisted-Coiled Polymer Actuators Using Model Predictive Control,” IEEE Robotics and Automation Letters, Vol. 6, No. 2, pp. 4141-4148, March, 2021
  • Tuan Luong, Sungwon Seo, Kihyeon Kim, Jeongmin Jeon, Francisco Yumbla, Ja Choon Koo, Hyouk Ryeol Choi, Hyungpil Moon, “Realization of a Simultaneous Position-Stiffness Controllable Antagonistic Joint Driven by Twisted-Coiled Polymer Actuators Using Model Predictive Control,” IEEE Access, Vol. 9, pp. 26071-26082, January, 2021
  • Young Min Lee, Hyuk Jin Lee, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “Analytical Modeling for Design and Performance Evaluations of a New Low Aspect Ratio Soft Rotary Pneumatic Actuator,” Smart Materials and Structures, Vol. 29, No. 12, pp. 125015, November, 2020
  • Sung Joon Kim, Jae Young Choi, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “Biomimetic Hybrid Tactile Sensor with Ridged Structure That Mimics Human Fingerprints to Acquire Surface Texture Information,” Sensors and Materials, Vol. 32, No. 11, pp. 3787-3799, November, 2020
  • Sung Joon Kim, Seung Ho Lee, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “A Non-Array Type Cut to Shape Soft Slip Detection Sensor Applicable to Arbitrary Surface,” Sensors, Vol. 20, No. 21, pp. 6185, October, 2020
  • Yoon Haeng Lee, Young Hun Lee, Hyunyong Lee, Hansol Kang, Jun Hyuk Lee, Luong Tin Phan, Sungmoon Jin, Yong Bum Kim, Dong-Yeop Seok, Seung Yeon Lee, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Development of a Quadruped Robot System With Torque-Controllable Modular Actuator Unit,” IEEE Transactions on Industrial Electronics, Vol. 68, No. 8, pp. 7263-7273, July, 2020
  • Seung Ho Lee, Hyuk Jin Lee, Kyeong Ha Lee, Kyung Tae Nam, Ja Choon Koo, “A novel variable stiffness scotch yoke series elastic actuator for enhanced functional stiffness,” Microsystem Technologies, Vo. 26, No. 11, pp. 3395-3402, June, 2020
  • Dong Jun Oh, Zheng Yuan Li, Jae Hyeon Kim, Hyouk Ryeol Choi, Ja Choon Koo, “A Flexible Self-Recovery Finger Joint for a Tendon-Driven Robot Hand,” Review of Scientific Instruments, Vol. 91, No. 11, pp. 115002, November, 2020
  • Ji Min Baek, Sang Hoon Ji, Ja Choon Koo “A Cost Effective On-Site Fault Diagnosis Method for Home Appliance Rotor Failures,” Microsystem Technologies, Vol. 26, No. 11, pp.3389-3394, May, 2020
  • Hyuk Jin Lee, Hae Jin Lee, Jung Su Lee, Yong Nam Kang, Ja Choon Koo, “A Built-Up-Type Deformable Phantom for Target Motion Control to Mimic Human Lung Respiration,” Review of Scientific Instruments, Vol. 91, No. 5, pp. 054106, May, 2020
  • Kyeong Ho Cho, Youngeun Kim, Sang Yul Yang, Kihyeon Kim, Jae Hyeong Park, Hugo Rodrigue, Hyungpil Moon, Ja Choon Koo, Jae-do Nam, Hyouk Ryeol Choi, “Artificial Musculoskeletal Actuation Module Driven by Twisted and Coiled Soft Actuators,” Smart Materials and Structures, Vol. 28, No. 11, pp. 1-10, November, 2019
  • Hyuk Jin Lee, Kyeong Ha Lee, Young Min Lee, Hyouk Ryeol Choi, Hyungpil Moon, and Ja Choon Koo, “A Bundled Staggering Patterned Pneumatic Muscle Actuator for Improved Working Efficiency” Journal of Mechanical Science and Technology, Vol. 33, No. 10, pp. 4981-4989, October, 2019
  • Kyeong Ho Cho, Ho Sang Jung, Sang Yul Yang, Youngeun Kim, Hugo Rodrigue, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Sliding Filament Joint Mechanism: Biomimetic Artificial Joint Mechanism for Artificial Skeletal Muscles” Journal of Mechanisms and Robotics, Vol. 11, No. 2, pp. 1-10, April, 2019
  • Kyeong Ha Lee, Seung Guk Baek, hyouk Ryeol Choi, Hyungpil Moon, Sang Hoon Ji, Ja Choon Koo, “Feedforward Model-Inverse Position Control of Three-Stage Servo-Valve Using Zero Magnitude Error Tracking Control,” Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, Vol. 233, No. 7, pp. 2340-2348, April, 2019
  • Michael D. Kim, Kwang-Hee Lee, Sang-Moo Lee, Ja Choon Koo, Sang-Hoon Ji, “Design and Development of a Mobile Robotic CT System for Intraoperative Use” IEEE/ASME Transactions on Mechatronics, Vol. 24, No. 1, pp. 395-405, February, 2019
  • Min-Ju Hwang, Myeong-Gi Kim, Sanghoon Kim, Ye Chan Kim, Hee Won Seo, Jun Keun Cho, In-Kyung Park, Jonghwan Suhr, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, Kwang Jin Kim, Yongsug Tak, Jae-Do Nam, “Cathodic Electrophoretic Deposition (EPD) of Phenylenediamine-Modified Graphene Oxide (GO) for Anti-Corrosion Protection of Metal Surfaces,” Carbon, Vol. 142, pp. 68-77, February, 2019
  • 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 Baek, 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, Vol. 32, No. 11, pp. 1976-3824, 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, Vol. 20, No. 11, pp. 001-006, 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, Hyouk Ryeol Choi, “Musclelike Joint Mechanism Driven by Dielectric Elastomer Actuator for Robotic Applications,” Smart Materials and Structures, Vol. 27, No. 7, pp. 001-012, 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, Vol. 24, No. 11, pp. 4471-4476, 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, Vol. 5, No. 2, pp. 190-203, April, 2018
  • Seung Guk Baek, Sanghoon Ji, Ja Choon Koo, “Experimental Study of Electro-Hydraulic Actuator With Payload for Precision Motion Control,” Microsystem Technologies, Vo. l24, No. 3, pp. 1347-1357, March, 2018
  • Zheng Yan 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 Sensor,” Microsystem Technologies, Vol. 23, No. 11, pp. 5163-5169, November, 2017
  • Sung Joon Kim, Do Yeon Hwang. Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “Development of a Resistive Compact Slip Sensor Using Dielectric Elastomer,” Microsystem Technologies, Vol. 23, No. 11, pp. 5163-5169, 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,” Intelligent Service Robotics, Vol. 10, pp. 347-362, October, 2017
  • Sang Yul Yang, Kyeong Ho Cho, Youngeun Kim, Min-Geun Song, Ho Sang Jung, Ji Wang Yoo, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “High Performance Twisted and Coiled Soft Actuator With Spandex Fiber for Artificial Muscles,” Smart Materials and Structures, Vol. 26, No. 10, pp. 1-9, August, 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 Model of Ultra-Thin Glass Fiber Epoxy Prepreg Exhibiting Both Autocatalytic and Diffusion-Controlled Regimes Under Isothermal and Dynamic-Heating Conditions,” Korea-Australia Rheology Journal, Vol. 29, No. 3, pp. 157-162, 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, Vol. 22, No. 4, pp. 1594-1599, 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, Vol. 26, March, 2017
  • Kyeong Ho Cho, Young Hoon Jin, Ho Moon Kim, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Multi-functional Robotic Crawler for Inspection of Suspension Bridge Hanger Cables: Mechanism Design and Performance Validation,” IEEE/ASME Transactions on Mechatronics, Vol. 22, No. 1, pp. 236-246, 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 Dielectric Elastomer Actuator,” International Journal of Control, Automation and Systems, Vol. 15, No. 1, pp. 1-11, 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, Vol. 22, No. 6, pp. 1501-1509, 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, Vol. 50, No. 11, pp. 2825-2837, 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 Multifingered Robot Hand with Soft Fingertips,” Intelligent Service Robotics, Vol. 8, No. 4, pp. 225-232, October, 2015
  • Yong Bum Kim, Gitae Kang, Gun Kyu Yee, An Na 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, Vol. 8, No. 4, pp. 141-149, July, 2015
  • Jae Hyeon Kim, Hyun-Suck Yoon, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “Application of a Sensor Fusion Algorithm for Improving Grasping Stability,” Journal of Mechanical Science and Technology, Vol. 29, No. 7, pp. 2693-2698, 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, Vol. 21, No. 12, pp. 2663-2668, 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, Vol. 21, No. 12, pp. 2697-2704, 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, Vol. 39, No. 2, pp. 169-182, 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,” Journal of Mechanical Science and Technology, Vol. 28, No. 11, pp. 4389-4395, November, 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, Vol. 62, No. 10, pp. 1497–1516, October, 2014
  • Sanghoon Kim, Ji-Beom Yoo, Gi-Ra Yi, Youngkwan Lee, Hyouk Ryeol Choi, Ja Choon Koo, Joon-Suk Oh, 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, Vol. 2, No. 32, pp. 6462-6466, June, 2014
  • Yong Seok Ihn, SangHoon Ji, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “Kinematic Design of a Redundant Parallel Mechanism for Maskless Lithography Optical Instrument Manipulations,” Microsystem Technologies, Vol. 20, No. 8-9, pp. 1479-1490, May, 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, Vol. 12, No. 2, pp. 372-382, April, 2014
  • Canh Toan Nguyen, Hoa Phung, Tien Dat Nguyen, Choonghan Lee, Uikyum Kim, Donghyouk Lee, Hyungpil Moon, Jachoon Koo, Jae-do Nam, Hyouk Ryeol Choi, “A Small Biomimetic Quadruped Robot Driven by Multistacked Dielectric Elastomer Actuators,” Smart Mater. Struct, Vol. 23, No. 6, pp. 065005, 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, Vol. 12, No. 2, pp.406-414, DOI 10.1007/s12555-013-0328-x, ISSN:1598-6446, eISSN:2005-4092, April, 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, Vol. 11, No. 50, pp. 42379, 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, Vol. 11, No. 6, pp. 1276-1289, December, 2013
  • 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, Vol. 135, No. 4, pp. 041001, ISBN 1043-7398, December, 2013
  • 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, Vol. 205, No. 1, pp. 191-198, November, 2013
  • 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, Vol. 19, No. 9-10, pp. 1433–1440, DOI 10.1007/s00542-013-1832-x, September, 2013
  • Kyeong Ho Cho, Ho Moon Kim, Young Hoon Jin, Fengyi Liu, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Inspection Robot for Hanger Cable of Suspension Bridge: Mechanism Design and Analysis,” IEEE/ASME Transactions on Mechatronics, Vol. 18, No. 6, pp. 1665-1674, September, 2013
  • 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, Hyouk Ryeol Choi, “A Transparent and Stretchable Graphene-based Actuator for Tactile Display.” Nanotechnology, Vol. 24, No. 14, pp. 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, Vol. 72, No. 1, pp. 57-72, DOI 10.1007/s10846-013-9820-z, February, 24, 2013
  • Seung-Guk Baek, Bumsik Shin, Sang Won Lee, Yeon-Sun Choi, Jinhyun Kim, Ja Choon Koo, “Optimization of High Speed EMU Suspension Parameters for Vibration Reduction,” Journal of Mechanical Science and Technology, Vol. 27, No. 2, pp. 305-311, DOI 10.1007/s12206-012-1246-1, March, 2013
  • Dong-Hyuk Lee, Hyungpil Moon, Ja Choon Koo, Hyouk Ryeol Choi, “Map Building Method for Urban Gas Pipelines Based on Landmark Detection,” International Journal of Control, Automation, and Systems, Vol. 11, No.1, pp. 127-135, DOI 10.1007/s12555-012-0049-6, February, 2013
  • Canh Toan Nguyen, Ngoc Linh Nguyen, Hyungseok Lee, Daegyeong Kim, Choonghan Lee, Hyungpil Moon, Ja Choon Koo, Jae-do Nam, JeongHeon Han, Hyouk Ryeol Choi, “Enhancement of Transduction Performance of a Dielectric Elastomer Actuator Based on Acrylonitrile Butadiene Rubber” Macromolecular Research, Vol.21, pp.85-91, 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, October, 2012
  • 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 Vol. 521, pp. 65–68, October, 2012
  • Yong Seok Ihn, Sang-Hoon Ji, Hyungpil Moon, Hyouk Ryeol Choi, Ja Choon Koo, “A Dual Step Precision Multi-DOF Stage for Maskless Digital Lithography,” Microsystem Technologies Vol.18, pp.1741–1750, DOI 10.1007/s00542-012-1619-5, July, 2012
  • Sang-ik Son, David Pugal, Taeseon Hwang, Hyouk Ryeol Choi, Ja Choon Koo, Yooungkwan Lee, Kwang Kim, 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, Ja Choon Koo, “Particle Dynamics Integration to Multibody Dynamics Using Graphics Processing Unit,” Advanced Science Letters, Vol. 8, pp. 366-370, ISSN: 1936-6612, April 2012
  • 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,” Korean 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, 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, Vol. 10, No. 2, pp.383-395, DOI 10.1007/s12555-012-0218-7, April, 2012
  • Baek-Chul Kim, Youngkwan Lee, Jae-Do Nam, Hyungpil Moon, Hyouk Ryeol Choi, 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, April, 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, March, 2011
  • Huu Chuc Nguyen, Nguyen Huu Lam Vuong, Duk Sang Kim, Hyungpil Moon, Ja Choon Koo, Youngkwan Lee, Jae-do Nam, 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, December, 2010
  • Joonsuk Oh, Jun-Ho Lee, Ja Choon Koo, Hyouk Ryeol Choi, Young Kwan Lee, Taesung Kim, Nguyen Dang Luong, 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, May, 2010
  • Tri Cong Phung, Yong Seok Ihn, Ja Choon Koo, Hyouk Ryeol Choi, “An Enhanced Edge Tracking Method Using a Low Resolution Tactile Sensor,” International Journal of Control, Automation, and Systems Vol. 8, No. 2, pp. 462-467, April, 2010
  • Tri Cong Phung, Yong Seok Ihn, Ja Choon Koo, 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
  • Nguyen Huu Chuc, Nguyen Huu Lam Vuong, Duk Sang Kim, Hyung Pil Moon, Ja Choon Koo Young Kwan Lee, Jae-Do Nam, 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
  • Misuk Cho, Chae Seok Choi, So Jung Lee, Suk Wang Yoon, Ja Chun Koo, and Young Kwan Lee, “Fabrication of Polyurethane-sheet Acoustic Windows and Their Mechanical and Acoustic Properties in Water,” Polymer(Korea), Vol. 34, No. 2, pp 104-107, March, 2010
  • Byung June Choi, Bumsoo Kim, Sung Moon Jin, Ja Choon Koo, Wan Kyun Chung, Hyouk Ryeol Choi, 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, 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, 2010
  • Yong Seok Ihn, S. K. Kim, Dongho Oh, M. E. Kim, 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