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| 1 | Kinematic Analysis and Experimental Verification on the Locomotion of Gecko显示文摘This paper presents a kinematic analysis of the locomotion of a gecko,and experimental verification of the kinematicmodel.Kinematic analysis is important for parameter design,dynamic analysis,and optimization in biomimetic robot research.The proposed kinematic analysis can simulate,without iteration,the locomotion of gecko satisfying the constraint conditionsthat maintain the position of the contacted feet on the surface.So the method has an advantage for analyzing the climbing motionof the quadruped mechanism in a real time application.The kinematic model of a gecko consists of four legs based on 7-degreesof freedom spherical-revolute-spherical joints and two revolute joints in the waist.The motion of the kinematic model issimulated based on measurement data of each joint.The motion of the kinematic model simulates the investigated real gecko’smotion by using the experimental results.The analysis solves the forward kinematics by considering the model as a combinationof closed and open serial mechanisms under the condition that maintains the contact positions of the attached feet on the ground.The motions of each joint are validated by comparing with the experimental results.In addition to the measured gait,three othergaits are simulated based on the kinematic model.The maximum strides of each gait are calculated by workspace analysis.Theresult can be used in biomimetic robot design and motion planning. | Woochul Nam TaeWon Seo Byungwook Kim DongsuJeon Kyu-Jin Cho Jongwon Kim | 2009 | Journal of Bionic Engineering2009，6，3： | 6 |
| 2 | Design of a bias magnetic system of a magnetostrictive sensor for flexural wave measurement 显示文摘 | Kim Woochul Kim Yoon Young | 2004 | IEEE Transactions on magnetics2004，40，5： | 1 |
| 3 | The role of microRNA-23b in the differentiation of MSC into chondrocyte by targeting protein kinase A signaling显示文摘 | Onju Ham Byeong-Wook Song Se-Yeon Lee Eunmi Choi Min-Ji Cha Chang Youn Lee Jun-Hee Park Il-Kwon Kim Woochul Chang Soyeon Lim Chang Hyun Lee Soonhag Kim Yangsoo Jang Ki-Chul Hwang | 2012 | Biomaterials2012，，18： | 1 |
| 4 | OptimalDisk Clamp Design to Minimize Stress Variation of Disks ina Hard Disk Driver 显示文摘 | KIM Woochul KIM Woo-Sung CHANG Joseph | 2009 | Journal of Mechanical Scienceand Technology2009，23，10： | 1 |
| 5 | Cordycepin inhibits vascular smooth muscle cell proliferation显示文摘 | Woochul Chang Soyeon Lim Heesang Song Byeong-Wook Song Hye-Jung Kim Min-Ji Cha Jae Mo Sung Tae Woong Kim Ki-Chul Hwang | 2008 | European Journal of Pharmacology2008，，1： | 1 |
| 6 | Design of a Bias Magnetic System of a Magnetostrictive Sensor for Flexural Wave Measurement 显示文摘 | Woochul Kim Yoon Young Kim | 2004 | IEEE Transactions on Magnetics2004，5，40： | 1 |
| 7 | Cordycepin inhibits vascular smooth muscle cell proliferation显示文摘 | Woochul Chang Soyeon Lim Heesang Song Byeong-Wook Song Hye-Jung Kim Min-Ji Cha Jae Mo Sung Tae Woong Kim Ki-Chul Hwang | 2008 | European Journal of Pharmacology2008，，1： | 1 |
| 8 | Copper foam-derived electrodes as efficient electrocatalysts for conventional and hybrid water electrolysis显示文摘Electrochemical water splitting has been demonstrated as a promising technology for the renewable generation of green hydrogen from water.Despite the extensive progress in materials science,one particular challenge for further development towards industrial application lies in the rational design and exploitation of efficient and cost-effective materials,especially oxygen evolution reaction(OER)electrocatalysts at the anode.In addition,attempts to replace the OER with other more oxidizable anode reactions are being evaluated as a groundbreaking strategy for generating hydrogen at lower potentials and reducing overall energy costs while producing valuable chemicals simultaneously.Compared with Fe/Co/Ni-based compounds,Cu-based materials have not received extensive research attention for electrode designs despite their high conductivity and abundant earth reserves.In this review,combining with the advantages of a three-dimensional network structure of metal foams,we summarize recent progress on Cu foam(CF)-derived materials as efficient electrocatalysts towards pure water electrolysis and hybrid water electrolysis.The advantages of CF and design strategies to enhance the electrocatalytic activity and operational durability are presented first.Catalyst design and fabrication strategies are then highlighted and the structure-activity relationship is also discussed.Finally,we propose challenges and perspectives on self-supported electrodes beyond CF-derived materials. | Hainan Sun Hyunseung Kim Sanzhao Song WooChul Jung | 2022 | Materials Reports(Energy)2022，2，2： | 1 |
| 9 | Advanced electrocatalysts with unusual active sites for electrochemical water splitting显示文摘Electrochemical water splitting represents a promising technology for green hydrogen production.To design advanced electrocatalysts,it is crucial to identify their active sites and interpret the relationship between their structures and performance.Materials extensively studied as electrocatalysts include noble-metal-based(e.g.,Ru,Ir,and Pt)and non-noble-metal-based(e.g.,3d transition metals)compounds.Recently,advancements in characterization techniques and theoretical calculations have revealed novel and unusual active sites.The present review highlights the latest achievements in the discovery and identification of various unconventional active sites for electrochemical water splitting,with a focus on state-of-the-art strategies for determining true active sites and establishing structure–activity relationships.Furthermore,we discuss the remaining challenges and future perspectives for the development of next-generation electrocatalysts with unusual active sites.By presenting a fresh perspective on the unconventional reaction sites involved in electrochemical water splitting,this review aims to provide valuable guidance for the future study of electrocatalysts in industrial applications. | Hainan Sun Xiaomin Xu Hyunseung Kim Zongping Shao WooChul Jung | 2024 | InfoMat2024，6，1： | 0 |
| 10 | Thin Films Fabricated by Pulsed Laser Deposition for Electrocatalysis显示文摘Advances in energy conversion and storage technologies,such as water electrolyzers,rechargeable metal-air batteries,and fuel cells,have enabled a renewable and sustainable future.The efficiency and effectiveness of these technologies largely relies on the physicochemical properties of the functional materials used,specifically electrocatalysts.Pulsed laser deposition(PLD)is a powerful technique for the synthesis of thin film materials,offering a unique platform for understanding electrochemical reaction mechanisms and searching for low-cost and high-performance electrocatalysts.In this mini-review,we present the latest studies in which thin film materials(mainly focused on perovskite oxide thin films)via PLD have been actively utilized in the field of electrocatalysis.The fundamentals and advantages of PLD in the synthesis of thin films are discussed first.Then,emerging types of thin films associated with electrochemical applications are presented.Special emphasis is placed on material design methods to reveal the reaction mechanisms and establish the structure–performance relationships by understanding structural variations in precatalysts and surface reconstruction under reaction conditions.Finally,we discuss remaining challenges and future perspectives. | Hainan Sun Hyunseung Kim Xiaomin Xu Liangshuang Fei WooChul Jung Zongping Shao | 2023 | Renewables2023，1，1： | 0 |
| 11 | Reversible Zn/polymer heterogeneous anode显示文摘Commercialization of Zn-metal anodes with low cost and high theoretical capacity is hindered by the poor reversibility caused by dendrites growth,side reactions,and the slow Zn^(2+)-transport and reaction kinetics.Herein,a reversible heterogeneous electrode of Zn-nanocrystallites/polyvinylphosphonic acrylamide(Zn/PPAm)with fast electrochemical kinetics is designed for the first time:phosphonic acid groups with strong polarity and chelation effect ensure structural reversibility and stability of the threedimensional Zn-storage-host PPAm network and the Zn/PPAm hybrid;hydrophobic carbon chains suppress side reactions such as hydrogen evolution and corrosion;weak electron-donating amide groups constitute Zn^(2+)-transport channels and promote“desolvation”and“solvation”effects of Zn^(2+)by dragging the PPAm network on the Zn-metal surface to compress/stretch during Zn plating/stripping,respectively;and the heterostructure and Zn nanocrystallites suppress dendrite growth and enhance electrochemical reactivity,respectively.Thus,the Zn/PPAm electrode shows cycle reversibility of over 6000 h with a hysteresis voltage as low as 31 mV in symmetrical cells and excellent durability and flexibility in fiber-shaped batteries. | Lingyun Xiong Hao Fu Kai Yang Ji Young Kim Ren Ren Joong Kee Lee Woochul Yang Guicheng Liu | 2023 | Carbon Energy2023，5，6： | 0 |
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