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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 | ZnS coating of cathode facilitates lean‐electrolyte Li‐S batteries显示文摘Tremendous effort has been devoted to lithium‐sulfur batteries,where flooded electrolytes have been employed ubiquitously.The use of lean electrolytes albeit indispensable for practical applications often causes low capacity and fast capacity fading of the sulfur cathode;thus,the electrolyte/sulfur active mass ratios below 5μL/mg have been rarely reported.Herein,we demonstrate that ZnS coating transforms sulfur cathode materials electrolyte‐philic,which tremendously promotes the performance in lean electrolytes.The ZnS‐coated Li2S@graphene cathode delivers an initial discharge capacity of 944mAh/g at an E/S ratio of 2μL/mg at the active mass loading of 5.0 mg Li2S/cm^2,corresponding to an impressive specific energy of 500Wh/kg based on the mass of cathode,electrolyte,and the assumed minimal mass of lithium metal anode.Density functional theory calculations reveal strong binding between ZnS crystals and electrolyte solvent molecules,explaining the better wetting properties.We also demonstrate the reversible cycling of a hybrid cathode of ZnS‐coated Li2S@graphene mixed with VS2 as an additive at an E/AM(active mass)ratio of 1.1μL/mg,equivalent to the specific energy of 432 Wh/kg on the basis of the mass of electrodes and electrolyte. | Woochul Shin Jun Lu Xiulei Ji | 2019 | Carbon Energy2019，1，2： | 5 |
| 3 | The electrolyte comprising more robust water and superhalides transforms Zn-metal anode reversibly and dendrite-free显示文摘A great challenge for all aqueous batteries,including Zn-metal batteries,is the parasitic hydrogen evolution reaction on the low-potential anode.Herein,we report the formula of a highly concentrated aqueous electrolyte that mitigates hydrogen evolution by transforming water molecules more inert.The electrolyte comprises primarily ZnCl_(2) and LiCl as an additive,both of which are inexpensive salts.The O-H covalent bonds in water get strengthened in a chemical environment that has fewer hydrogen bonding interactions and a greater number of Zn-Cl superhalides,as suggested by integrated characterization and simulation.As a result,the average Coulombic efficiency of zincmetal anode is raised to an unprecedented>99.7%at 1mA cm^(−2).In the new electrolyte,the plating/stripping processes leave the zinc-metal anode dendrite-free,and the zinc-metal anode delivers stable plating/stripping cycles for 4000 hours with an areal capacity of 4 mAh cm^(−2) at 2mA cm^(−2).Furthermore,the high Coulombic efficiency of zinc-metal anode in the ZnCl_(2)-LiCl mixture electrolyte is demonstrated in full cells with a limited anode.The V_(2)O_(5)·H_(2)O||Zn full cell with an N/P mass ratio of 1.2 delivers a stable life of more than 2500 cycles,and the LiMn_(2)O_(4)||Zn hybrid cell with an N/P mass ratio of 0.6 exhibits 1500 cycles in its stable life. | Chong Zhang Woochul Shin Liangdong Zhu Cheng Chen Joerg C.Neuefeind Yunkai Xu Sarah I.Allec Cong Liu Zhixuan Wei Aigerim Daniyar Jia‐Xing Jiang Chong Fang P.Alex Greaney Xiulei Ji | 2021 | Carbon Energy2021，3，2： | 3 |
| 4 | Solid electrolyte-electrode interface based on buffer therapy in solid-state lithium batteries显示文摘In the past few years,the all-solid lithium battery has attracted worldwide attentions,the ionic conductivity of some all-solid lithium-ion batteries has reached 10^(-3)-10^(-2) S/cm,indicating that the transport of lithium ions in solid electrolytes is no longer a major problem.However,some interface issues become research hotspots.Examples of these interfacial issues include the electrochemical decomposition reaction at the electrode-electrolyte interface;the low effective contact area between the solid electrolyte and the electrode etc.In order to solve the issues,researchers have pursued many different approaches.The addition of a buffer layer between the electrode and the solid electrolyte has been at the center of this endeavor.In this review paper,we provide a systematic summarization of the problems on the electrode-solid electrolyte interface and detailed reflection on the latest works of buffer-based therapies,and the review will end with a personal perspective on the improvement of buffer-based therapies. | Lei-ying Wang Li-fan Wang Rui Wang Rui Xu Chun Zhan Woochul Yang Gui-cheng Liu | 2021 | International Journal of Minerals,Metallurgy and Materials2021，28，10： | 2 |
| 5 | Rosuvastatin inhibits norepineph- fine-induced cardiac hypertrophy via via suppression of Gh 显示文摘 | Eui-Young C Woochul C Soyeon L | 2010 | Eur J Phar- macol2010，627，13： | 1 |
| 6 | Thermal Conductivity Reduction and Thermoelectric Figure of Merit Increase by Embedding Nan- oparticles in Crystalline Semiconductors 显示文摘 | Woochul K Joshua Z Arthur G | 2006 | Physical Review Letters2006，96，04： | 1 |
| 7 | Cordycepin inhibits vascular smooth muscle cell proliferation显示文摘 | Woochul C Soyeon L Heesang S | 2008 | Eur J Pharmacol2008，597，： | 1 |
| 8 | Smart ZnS@C filler for super-anticorrosive self-healing zinc-rich epoxy coating显示文摘The zinc-rich epoxy cathodic protection coating is the most widely used anticorrosion material for marine steel.However,traditional conductive fillers lack the intelligent self-healing effect,which limits the long-term anticorrosion performance.Herein,with uniform carbon-coated ZnS(ZnS@C)nanoballs as the smart active release filler,we propose an anticorrosive and self-healing zinc-rich maleic anhydride epoxy coating.Due to the high pore filling efficiency of the nanoballs,the water vapor transmission rate of the coating with an initial corrosion efficiency of 99.92%and a low-frequency impedance of|Z|f=10mHz=3.88×10^(10) Ω·cm^(2),was reduced by 52%.The carbon-shell of the nanoball increases electron transmission paths in the coating and improves conductivity by nearly two orders of magnitude,which effectively activates more Zn-sites and extends the cathodic protection time.Moreover,once the steel-substrate undergoes regional corrosion,the SO_(4)^(2-)hydrolyzes from the ZnS-core of the nanoball and reacts with iron ions on the corroded area accurately and intelligently to fill the gap and self-heals into a new dense barrier layer(Fe_(2)(SO_(4))_(3),etc.),which significantly improves the shielding protection ability during the long-term usage of the coating.The effective anticorrosion time of the proposed coating could be up to 3,400 h. | Kai Yang Yixue Duan Guicheng Liu Guoyan Ma Hao Fu Xuyong Chen Manxiang Wang Gangqiang Zhu Woochul Yang Yiding Shen | 2022 | Nano Research2022，15，5： | 1 |
| 9 | RDDS: a real - time data distribution service for cyber - physical systems 显示文摘 | Woochul Kang | 2012 | Industrial Informatics2012，8，2： | 1 |
| 10 | Potential effects of 3-hydroxy-3-methylglutaryl coenzyme a reductase inhibition on G protein-mediated cardiac hypertrophy 显示文摘 | CHOI E Y WOOCHUL C LIM S | 2008 | Circulation2008，，： | 1 |
| 11 | 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 |
| 12 | 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 |
| 13 | Phorbol myristate acetate differentiates human adipose-derived mesenchymal stem cells into functional cardiogenic cells显示文摘 | Woochul Chang Soyeon Lim Byeong-Wook Song Chang Youn Lee Moon-Seo Park Young-An Chung Cheesoon Yoon Se-Yeon Lee Onju Ham Jun-Hee Park Eunhyun Choi Lee-So Maeng Ki-Chul Hwang | 2012 | Biochemical and Biophysical Research Communications2012，，4： | 1 |
| 14 | Mesenchymal Stem Cells Pretreated with Delive-red Hph-l-Hsp70Protein Are Protected from Hypoxia-Mediated Cell Death andRescueHeart Functions from Myocardial Injury显示文摘 | WOOCHUL CHANG | 2009 | STEM CELLS2009，27，： | 1 |
| 15 | 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 |
| 16 | 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 |
| 17 | Cordycepin Inhibits Vascular Smooth Muscle Cell Proliferation显示文摘 | Woochul Chang Soyeon Lim Heesang Song | 2008 | European Journal of Pharmacology2008，597，13： | 1 |
| 18 | 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 |
| 19 | RDDS: A Real-Time Data Distribution Service for Cyber-Physical Systems显示文摘 | Woochul Kang | 2012 | Industrial In- formatics2012，8，2： | 1 |
| 20 | Robust ZnS interphase for stable Zn metal anode of high-performance aqueous secondary batteries显示文摘Although Zn metal is an ideal anode candidate for aqueous batteries owing to its high theoretical capacity,lower cost,and safety,its service life and efficiency are damaged by severe hydrogen evolution reaction,self-corrosion,and dendrite growth.Herein,a thickness-controlled ZnS passivation layer was fabricated on the Zn metal surface to obtain Zn@ZnS electrode through oxidation–orientation sulfuration by the liquid-and vapor-phase hydrothermal processes.Benefiting from the chemical inertness of the ZnS interphase,the as-prepared Zn@ZnS electrode presents an excellent anti-corrosion and undesirable hydrogen evolution reaction.Meanwhile,the thickness-optimized ZnS layer with an unbalanced charge distribution represses dendrite growth by guiding Zn plating/stripping,leading to long service life.Consequently,the Zn@Zn S presented 300 cycles in the symmetric cells with a 42 mV overpotential,200 cycles in half cells with a 78 mV overpotential,and superb rate performance in Zn||NH;V;O;full cells. | Lingyun Xiong Hao Fu Weiwei Han Manxiang Wang Jingwei Li Woochul Yang Guicheng Liu | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，5： | 1 |
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