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  1. No Access

    Article

    Strength Evaluation of Flush End-Plate Connection Using Triangular Haunch in Pipe Rack

    In this paper, cyclic tests and finite element analyses were conducted on the flush end-plate connection of a pipe rack, with the haunch shape attached to the bottom of a beam as a variable. The cyclic test re...

    Seong-Hun Kang, Jun-Seop Lee, Hwa-In Park in International Journal of Steel Structures (2024)

  2. No Access

    Article

    Functional groups distributed on carbon nanotube surfaces using vacuum plasma for the high-capacitance supercapacitor electrode

    The excellent mechanical stability and electrochemical reactivity of activated carbon nanostructures has resulted in their wide use as an electrode material for the energy storage device. The method of activat...

    Thi Thu Trinh Phan, Inseong Hwang, My Thi Ngoc Nguyen in Journal of Materials Science (2024)

  3. No Access

    Article

    Strength Evaluation of End-Plate Connections Using Stiffness Reduction Factor

    The cross-sections of the Pre-engineered Buildings (PEBs) are efficiently proportioned in accordance with the external forces compared to the conventional steel structures which enhances their usability. PEBs ...

    Jun-Seop Lee, Hee-Du Lee, Swoo-Heon Lee in International Journal of Steel Structures (2023)

  4. No Access

    Article

    PEDOT:PSS-based three-dimensional lamella network for high-performance sound absorption and heat transfer

    Human health is seriously threatened by noise from various sources. Recently, the development of ultra-high-speed motors has caused not only high-frequency noise but also temperature rise problems due to high-...

    Sojeong Roh, Thi Thu Trinh Phan, Jun Seop Lee in Journal of Materials Science (2023)

  5. No Access

    Article

    Structural Performance Evaluation of Modular Connections Using Developed Blocks

    The use of modular structures involves the rapid on-site assembly of members that were pre-manufactured in a factory. Research into this approach has recently been increasing owing to its lower cost, afforded ...

    Jun-Seop Lee, Hee-Du Lee, Kyung-Jae Shin in International Journal of Steel Structures (2021)

  6. No Access

    Article

    Strength Evaluation of Angle Type Shear Connectors in Composite Beams

    Composite structures are used in structural systems to take advantage of concrete and steel, and the role of shear connectors between the two is extremely important. Currently, anchor- and angle-type connector...

    Jun-Seop Lee, Kyung-Jae Shin, Hee-Du Lee in International Journal of Steel Structures (2020)

  7. No Access

    Article

    Facile synthesis of palladium-decorated three-dimensional conducting polymer nanofilm for highly sensitive H2 gas sensor

    Hydrogen gas is a topic of considerable interest because of its critical importance to various applications in the fuel cell, aerospace and automotive industries. However, because it is highly flammable at low...

    Kyung Hee Cho, Haejun Yu, Jun Seop Lee, Jyongsik Jang in Journal of Materials Science (2020)

  8. Article

    Open Access

    Flower-like Palladium Nanoclusters Decorated Graphene Electrodes for Ultrasensitive and Flexible Hydrogen Gas Sensing

    Flower-like palladium nanoclusters (FPNCs) are electrodeposited onto graphene electrode that are prepared by chemical vapor deposition (CVD). The CVD graphene layer is transferred onto a poly(ethylene naphthal...

    Dong Hoon Shin, Jun Seop Lee, Jaemoon Jun, Ji Hyun An, Sung Gun Kim in Scientific Reports (2015)