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  1. Article

    Open Access

    Characterization technique of gases permeation properties in polymers: H2, He, N2 and Ar gas

    We demonstrate a simple experimental technology for characterizing the gas permeation properties of H2, He, N2 and Ar absorbed in polymers. This is based on the volumetric measurement of released gas and an upgra...

    Jae Kap Jung, Ji Hun Lee, ** Sub Jang, Nak Kwan Chung… in Scientific Reports (2022)

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  2. Article

    Open Access

    Permanent magnet actuation for magnetic bead-based DNA extraction

    Recently, automatic molecular diagnostic devices to extract DNA have been extensively developed using magnetic beads. While various methods can be applied to the control of the beads, the efficiency of the con...

    Chang-Young Park, Young-Hyun Park, Yu-Seop Kim… in BioMedical Engineering OnLine (2018)

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  3. Article

    Open Access

    Observation and tunability of room temperature photoluminescence of GaAs/GaInAs core-multiple-quantum-well shell nanowire structure grown on Si (100) by molecular beam epitaxy

    We report the observation of room temperature photoluminescence (PL) emission from GaAs/GaInAs core-multiple-quantum-well (MQW) shell nanowires (NWs) surrounded by AlGaAs grown by molecular beam epitaxy (MBE) ...

    Kwang Wook Park, Chang Young Park, Sooraj Ravindran… in Nanoscale Research Letters (2014)

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  4. No Access

    Article

    Effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well structures

    The effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well (QW) structures with a reduced internal field were investigated by using the non-Markovian model with m...

    Seoung-Hwan Park, Yong-Hee Cho, Mun-Bo Shim… in Journal of the Korean Physical Society (2014)