Chan Lee

ORCID: 0000-0003-0813-6335
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About
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Research Areas
  • Prosthetics and Rehabilitation Robotics
  • Education and Learning Interventions
  • Educational Systems and Policies
  • Muscle activation and electromyography studies
  • Turbomachinery Performance and Optimization
  • Aerodynamics and Fluid Dynamics Research
  • Robot Manipulation and Learning
  • Aerodynamics and Acoustics in Jet Flows
  • Educational Research and Pedagogy
  • Refrigeration and Air Conditioning Technologies
  • Heat Transfer Mechanisms
  • Engineering Applied Research
  • Fluid Dynamics and Turbulent Flows
  • Combustion and flame dynamics
  • Cyclone Separators and Fluid Dynamics
  • Stroke Rehabilitation and Recovery
  • Advanced Memory and Neural Computing
  • Robotic Mechanisms and Dynamics
  • Numerical methods in engineering
  • Chinese history and philosophy
  • Heat Transfer and Boiling Studies
  • Digital Media and Visual Art
  • Thermochemical Biomass Conversion Processes
  • Hydraulic and Pneumatic Systems
  • Dynamics and Control of Mechanical Systems

University of Seoul
2025

Seoul National University
2001-2025

Yeungnam University
2013-2025

Kongju National University
2024

University of Suwon
2011-2023

Korea University
2010-2023

Daegu Gyeongbuk Institute of Science and Technology
2015-2021

Pusan National University
2021

Chungnam National University
2020

Korea Advanced Institute of Science and Technology
1991-2018

10.1016/j.ijheatmasstransfer.2011.08.044 article EN International Journal of Heat and Mass Transfer 2011-09-19

Interest has grown in services that consume a significant amount of energy, such as large language models (LLMs), and research is being conducted worldwide on synaptic devices for neuromorphic hardware. However, various complex processes are problematic the implementation properties. Here, characteristics implemented through novel method, namely side chain control conjugated polymers. The developed exhibit biological brain, especially spike-timing-dependent plasticity (STDP), high-pass...

10.1002/advs.202400304 article EN cc-by Advanced Science 2024-02-26

Multivalued logic (MVL) technology is a promising solution for improving data density and reducing power consumption in comparison to complementary metal-oxide-semiconductor (CMOS) technology. Currently, heterojunction transistors (TRs) with negative differential transconductance (NDT) characteristics, which play an important role the function of MVL circuits, adopt organic or 2D semiconductors as active layers, but it still difficult apply conventional CMOS processes. Herein, we demonstrate...

10.1021/acsnano.3c09168 article EN ACS Nano 2024-01-04

Electrolyte-gated transistors (EGTs) are promising candidates as artificial synapses owing to their precise conductance controllability, quick response times, and especially low operating voltages resulting from ion-assisted signal transmission. However, it is still vague how ion-related physiochemical elements working mechanisms impact synaptic performance. Here, address the unclear correlations, we suggest a methodical approach based on electrochemical analysis using poly(ethylene oxide)...

10.1021/acsnano.3c10082 article EN ACS Nano 2024-02-07

The Series Elastic Actuator (SEA) has recently been developed by many research groups and applied in various fields. As SEA is the combination of motor, spring, gear load, types configurations mechanism have as SEAs to satisfy requirements necessary for applications. This paper provides a theoretical framework categorize compare these SEAs. general structure model provided, are categorized into Force-sensing Actuator, Reaction Transmitted based on relative location spring. Criteria such...

10.3390/act6030026 article EN cc-by Actuators 2017-08-22

We investigate the drop splashing threshold ST of water on a rough surface. Surface roughness has been known to facilitate splashing, but counterexample observed. Here, we suggest possible explanation how surface morphology affects splashing. focus air flow during event and estimate To demonstrate this effect, experiments using well-designed surfaces were conducted, results agree with our relation. This work shows that can both suppress presents method predict different morphologies.

10.1063/1.4873338 article EN Applied Physics Letters 2014-04-21

Abstract Electrolyte‐gated transistors (EGTs) have been extensively studied as a next‐generation neuromorphic device mimicking the biological ionic flux in synapses. However, its long‐term plasticity characteristic lasts only for few seconds because of rapid self‐discharge electrical double layer. Here, ultraviolet ozone (UVO) treated water‐in‐bisalt (WiBS)/polymer electrolyte‐gated synaptic transistor (WEST) which excellently implements multiple functions is proposed. Ultraviolet (UV) light...

10.1002/adfm.202110591 article EN Advanced Functional Materials 2021-12-29

This study explored the extent to which knowledge-sharing processes mediate organizational cultural factors and knowledge management effectiveness among Korean organizations. The findings show that play as mediators in effect of trust, collaboration, learning on effectiveness. Employees from practicing companies Korea were surveyed. Results mediation analysis have both practical statistical significance enhance Trust a culture are also significant increase We discuss implications these...

10.1002/piq.21161 article EN Performance Improvement Quarterly 2014-01-01

The majority of today's haptic interfaces are designed for hand-based interaction with virtual environments. However, there several real-life tasks that require a person to interact the environment using one's foot. Researchers have developed systems simulating walking in environment. This paper describes different approach foot based interactions, intended users sitting position. A VR-based rehabilitation system prototype "Rutgers Ankle" device is presented, along methods enhancing realism...

10.1109/haptic.2003.1191289 article EN 2003-12-08

The mass-spring system-like behavior is a powerful analysis tool to simplify human running/locomotion also known as Spring Loaded Inverted Pendulum (SLIP) model. Beyond an tool, the SLIP model utilized template for implementing human-like locomotion by using articulated robot. Since dynamics of robot exhibits complicated behaviour when projected into operational space template, various considerations are required from robot's mechanical design its control and analysis. Hence, technologies...

10.3389/fnbot.2019.00017 article EN cc-by Frontiers in Neurorobotics 2019-05-07

Recently, two-dimensional transition metal dichalcogenides (TMDs) such as molybdenum disulfide (MoS2) have attracted great attention due to their unique properties. To modulate the electronic properties and structure of TMDs, it is crucial precisely control chalcogenide vacancies several methods already been suggested. However, they limitations plasma damage by ion bombardment. Herein, we introduced a novel solvent-assisted vacancy engineering (SAVE) method sulfur in MoS2. Considering...

10.1039/d3nh00201b article EN Nanoscale Horizons 2023-01-01

Although existing Sparsely Annotated Object Detection (SAOD) approches have made progress in handling sparsely annotated environments multispectral domain, where only some pedestrians are annotated, they still the following limitations: (i) lack considerations for improving quality of pseudo-labels missing annotations, and (ii) rely on fixed ground truth which leads to learning a limited range pedestrian visual appearances domain. To address these issues, we propose novel framework called...

10.48550/arxiv.2501.02640 preprint EN arXiv (Cornell University) 2025-01-05

In this study, we evaluated the material and environmental benefits of recycling materials collected at University Seoul. The waste composition was analyzed by sampling using coning quartering methods campus center. cost determined comparing prices raw recycled materials, while calculated estimating potential greenhouse gas emissions incineration multiplying carbon price. It that rather than can reduce up to 2.8 tCO 2 eq per tonne waste. As a result, approximately 250 t household is...

10.1177/0958305x251315404 article EN Energy & Environment 2025-02-05

While IGZO is emerging as a promising channel material to address the scaling limitations of conventional silicon-based DRAM, its application in next-generation 3D DRAM requires further advancements achieving ultrathin structures and excellent performance tailored characteristics. Specifically, optimizing process variables essential for enhancing mobility structures, where tends degrade significantly, while maintaining constant threshold voltage, task that both experimentally intensive...

10.1021/acsami.4c22658 article EN ACS Applied Materials & Interfaces 2025-02-11

This paper proposes a novel steer-by-wire (SBW) system for marine vessels as viable alternative to conventional hydraulic steering systems. By replacing mechanical linkages, the proposed SBW enhances responsiveness, reduces complexity, and minimizes operator fatigue. Designed with power transmission mechanism suited maritime environments, it features modular architecture that allows seamless integration into existing vessels. Onboard experimental studies quantify forces required steering,...

10.3390/jmse13030582 article EN cc-by Journal of Marine Science and Engineering 2025-03-16

Staphylococcus aureus, particularly its methicillin-resistant strains (MRSA), poses significant challenges in healthcare settings due to propensity form biofilms on various surfaces. These enhance bacterial survival and increase resistance conventional treatments, complicating infection control efforts. This study investigates the efficacy of a novel approach combining povidone-iodine (PVP-I) hydrogen peroxide (H₂O₂) combat aureus biofilm formation hospital environments. A range...

10.20944/preprints202504.0094.v1 preprint EN 2025-04-01

Although existing Sparsely Annotated Object Detection (SAOD) approches have made progress in handling sparsely annotated environments multispectral domain, where only some pedestrians are annotated, they still the following limitations: (i) lack considerations for improving quality of pseudo-labels missing annotations, and (ii) rely on fixed ground truth which leads to learning a limited range pedestrian visual appearances domain. To address these issues, we propose novel framework called...

10.1609/aaai.v39i4.32472 article EN Proceedings of the AAAI Conference on Artificial Intelligence 2025-04-11

Three aerobic, rod-shaped actinobacterial strains, designated MMS17-SY117T, MMS17-SY207-3T and MMS17-SY213T, were isolated from soil their taxonomic positions analysed using a polyphasic approach. The isolates showed best growth at 30 °C, pH 7 0-1 % (w/v) NaCl. On the basis of 16S rRNA gene sequence similarity, affiliated to genus Nocardioides, closest species MMS17-SY213T Nocardioides aestuarii JC2056T (97.76%), currus IB-3T (97.41%) exalbidus RC825T (98.71%), respectively. Each isolate...

10.1099/ijsem.0.004095 article EN INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 2020-03-06

Abstract Logic conversion within multivalued logic (MVL) circuits is a promising solution that enhances complex data processing achieved through the modulation of negative differential transconductance (NDT) characteristics heterojunction transistors (HTRs) using various external control factors. Among these factors, utilizing photonic for switching facilitates multi‐state operations, enables wavelength‐selective and, on this basis, flexibility circuit system. Herein, implementation in HTRs...

10.1002/smll.202501543 article EN Small 2025-05-16
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