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  1. No Access

    Article

    Translocation of charged particles through a thin micropore under pressure-driven flow

    We report the effects of a particle surface charge during translocation through a thin micropore based on the simulation and experiments. The translocation of carboxylated and nonfunctionalized polystyrene bea...

    Junsang Moon, Chang Woo Song, Chang-Soo Han in Journal of Mechanical Science and Technology (2022)

  2. No Access

    Article

    Development of an Assembled Gripper for a Hydraulic Cutting Machine with a Novel Design for the Stable Holding of Various Shaped Objects

    The world experiences disasters caused by natural and industrial accidents. Various products have been developed and applied for manpower rescue and risk removal at disaster sites. However, in order to move de...

    Seung Chan Lee, Hyun Gi Moon in International Journal of Precision Enginee… (2021)

  3. No Access

    Article

    Design of Fixations for an Exoskeleton Device with Joint Axis Misalignments

    This study aims to solve problems caused by misalignments between exoskeleton systems and the human body. Misalignments interfere with the achievement of the wearer’s motion intention by generating unintended ...

    Byeongkyu Lee, Seung Chan Lee, Chang-soo Han in International Journal of Precision Enginee… (2020)

  4. No Access

    Article

    Development of a Passive Modular Knee Mechanism for a Lower Limb Exoskeleton Robot and Its Effectiveness in the Workplace

    Quasi-passive or passive mechanisms used for exoskeleton robots for load-carrying augmentation have been developed for reducing development cost, robot weight, and external energy consumption for augmentation....

    Ho-Jun Kim, Dong-Hwan Lim, Wan-Soo Kim in International Journal of Precision Enginee… (2020)

  5. No Access

    Article

    Scoliosis Screening through a Machine Learning Based Gait Analysis Test

    This study discussed application of a machine learning approach (Support vector machine, SVM) for the automatic cognition of gait changes due to scoliosis using gait measures: kinematic based on gait phase seg...

    Jae-sung Cho, Young-Shin Cho, Sang-Bok Moon in International Journal of Precision Enginee… (2018)

  6. No Access

    Article

    Gait analysis of hemiplegic patients in ambulatory rehabilitation training using a wearable lower-limb robot: A pilot study

    Robot-assisted ambulatory training has become an increasingly popular method of rehabilitation. The present study aimed to evaluate the effectiveness of robot-assisted training on walking by measuring changes ...

    Sang Bok Moon, Young-Hoon Ji, Hye-Yoen Jang in International Journal of Precision Enginee… (2017)

  7. No Access

    Article

    Development of real-time gait phase detection system for a lower extremity exoskeleton robot

    In this paper, we develop an insole sensor system that can determine various dynamic models of a lower extremity exoskeleton. The study analyzed the kinematic model of exoskeleton robot for lower limb that cha...

    Dong-Hwan Lim, Wan-Soo Kim, Ho-Jun Kim in International Journal of Precision Enginee… (2017)

  8. No Access

    Article

    Ultraclean contact transfer of patterned Ag electrodes by thermal release tape for transparent conductive electrode

    Silver grid electrode is a promising candidate for transparent conductive film because of its outstanding electrical, thermal, and optical properties, which can be easily tuned by changing the line width, spac...

    Ju Yeon Woo, Jun Ho Oh, Hyo Han, Ji-Weon Kim in International Journal of Precision Enginee… (2016)

  9. No Access

    Article

    Development and verification of upper extremities wearable robots to aid muscular strength with the optimization of link parameters

    In this study, we developed a wearable robot operating on the external skeleton to support the movements of a weak person’s upper limbs, mainly 3-degree of freedom (DOF) of the shoulder, 1-degree of freedom of...

    Hye-Youn Jang, Young-Hoon Ji, Jung-Soo Han in International Journal of Precision Enginee… (2015)

  10. No Access

    Article

    Sensor-based path planning: The two-identical-link hierarchical generalized Voronoi graph

    We present a new roadmap based on a generalized Voronoi graph (GVG) for two-identical-link (L2) robots to explore an unknown planar environment. It is called the L2 hierarchical generalized Voronoi graph (L2-HGVG...

    Ming-Lei Shao, Ji-Yeong Lee, Chang-Soo Han in International Journal of Precision Enginee… (2015)

  11. No Access

    Article

    Trajectory planning for energy minimization of industry robotic manipulators using the Lagrange interpolation method

    We propose to use Lagrange interpolation method to express each joint trajectory function to realize trajectory planning for energy minimization of industrial robotic manipulators. We give the position constra...

    Lu-** Luo, Chao Yuan, Rui-Jun Yan in International Journal of Precision Enginee… (2015)

  12. Article

    Open Access

    Bright, stable, and water-soluble CuInS2/ZnS nanocrystals passivated by cetyltrimethylammonium bromide

    We report a highly bright and stable aqueous dispersion of CuInS2/ZnS (CIS/ZnS) nanocrystals (NCs) using surfactant-assisted microemulsion and cold treatment. CIS/ZnS NCs were facilely synthesized via a stepwise,...

    Jun Lee, Chang-Soo Han in Nanoscale Research Letters (2015)

  13. No Access

    Article

    Gait patterns of chronic ambulatory hemiplegic elderly compared with normal Age-Matched elderly

    This study compares the gait of chronic ambulatory hemiplegic elderly (HE) with those of non-hemiplegic elderly (NHE) using Vicon® 512 motion analysis system to track movement trajectories. Subjects walked wit...

    Junho Kim, Se-In Oh, Hyungpil Cho in International Journal of Precision Enginee… (2015)

  14. No Access

    Article

    Operational space path planning of the dual-arm robot for the assembly task

    The assembly task involving complex parts by the dual-arm robot conducted in configuration space tends to require the heavy computational load, especially when the robot motion is constrained to avoid any coll...

    Sung-** Lim, Chang-Soo Han in International Journal of Precision Enginee… (2014)

  15. No Access

    Article

    Link length determination method for the reduction of the performance deviation of the manipulator: Extension of the valid workspace

    In this study, a link length determination method for the reduction of the performance deviation in the whole workspace of the manipulator was proposed. The structural length index (SLI), condition number (CN)...

    Hyeon-Guk Kim, Kyoo-Sik Shin in International Journal of Precision Enginee… (2014)

  16. No Access

    Article

    Pattern generation and control of a double pendulum using a nonlinear oscillator

    Prior to develo** the wearable walking assistant robot that supports walking for hemiplegia patients, a neural oscillator, a type of CPG (central pattern generation), was applied to 2-DOF double pendulum, wh...

    Jae-Young Lee, Abdul Manan Khan in International Journal of Precision Enginee… (2014)

  17. Article

    Open Access

    Large-scale synthesis of highly emissive and photostable CuInS2/ZnS nanocrystals through hybrid flow reactor

    We report a high-yield, low-cost synthesis route to colloidal CuInS2/ZnS (CIS/ZnS) nanocrystals (NCs) with Cu vacancies in the crystal lattice. Yellow-emitting CIS/ZnS core/shell NCs of high luminescence were fac...

    Jun Lee, Chang-Soo Han in Nanoscale Research Letters (2014)

  18. No Access

    Article

    Sensor based motion planning and estimation of highrise building façade maintenance robot

    With the increasing number of high-rise and large-scale buildings, modern buildings are becoming intelligent, and are incurring high construction costs and requiring careful maintenance. Maintenance works for ...

    Seunghoon Lee, Min-Sung Kang, Chang-Soo Han in International Journal of Precision Enginee… (2012)

  19. No Access

    Article

    Development and verification of a volume sensor for measuring human behavior

    In this study, a muscle volume sensor was developed to estimate the human behavior for its application to bioengineering and synchronous signal collection. The sensor is easily manufactured at a low cost. In a...

    A. Reum Seo, Hye Youn Jang, Wan Soo Kim in International Journal of Precision Enginee… (2012)

  20. Article

    Open Access

    Facile synthesis of uniform large-sized InP nanocrystal quantum dots using tris(tert-butyldimethylsilyl)phosphine

    Colloidal III-V semiconductor nanocrystal quantum dots [NQDs] have attracted interest because they have reduced toxicity compared with II-VI compounds. However, the study and application of III-V semiconductor...

    SoMyoung Joung, Sungwoo Yoon, Chang-Soo Han, Youngjo Kim in Nanoscale Research Letters (2012)

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