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  1. No Access

    Article

    Non-destructive Inspection System for Self-piercing Riveting in CFRP-Metal Joining Product Using Stereoscopic Method with Robotic Manipulator

    This paper presents a non-destructive inspection system for the self-piercing riveting (SPR) in carbon fiber reinforced plastic (CFRP)-metal joining products. The system employs a 6-degree of freedom robotic m...

    Hyunjae Lee, Jungsub Kim, **angyu Guo… in International Journal of Precision Enginee… (2023)

  2. No Access

    Article

    Wafer particle inspection technique using computer vision based on a color space transform model

    The preparation of defect-free wafers serves as a critical stage prior to fabrication of devices or chips as it is not possible to pattern any devices or chips on a defected wafer. Throughout the semiconductor...

    Heebum Chun, **gyan Wang, Jungsub Kim… in The International Journal of Advanced Manu… (2023)

  3. No Access

    Article

    A single camera unit-based three-dimensional surface imaging technique

    This paper introduces a simple three-dimensional (3D) stereoscopic method using a single unit of an imaging device consisting of a charge-coupled device (CCD) and a zoom lens. Unlike conventional stereoscopy, ...

    Yinhe Wang, **angyu Guo, Jungsub Kim… in The International Journal of Advanced Manu… (2023)

  4. No Access

    Article

    Concurrent self-assembly of RGB microLEDs for next-generation displays

    MicroLED displays have been in the spotlight as the next-generation displays owing to their various advantages, including long lifetime and high brightness compared with organic light-emitting diode (OLED) dis...

    Wonjae Chang, Jungsub Kim, Myoungsoo Kim, Min Woo Lee, Chung Hyun Lim, Gunho Kim… in Nature (2023)

  5. Article

    Open Access

    An elegant route to overcome fundamentally-limited light extraction in AlGaN deep-ultraviolet light-emitting diodes: Preferential outcoupling of strong in-plane emission

    While there is an urgent need for semiconductor-based efficient deep ultraviolet (DUV) sources, the efficiency of AlGaN DUV light-emitting diodes (LEDs) remains very low because the extraction of DUV photons i...

    Jong Won Lee, Dong Yeong Kim, Jun Hyuk Park, E. Fred Schubert… in Scientific Reports (2016)

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  6. Article

    Open Access

    Overcoming the fundamental light-extraction efficiency limitations of deep ultraviolet light-emitting diodes by utilizing transverse-magnetic-dominant emission

    While the demand for deep ultraviolet (DUV) light sources is rapidly growing, the efficiency of current AlGaN-based DUV light-emitting diodes (LEDs) remains very low due to their fundamentally limited light-ex...

    Dong Yeong Kim, Jun Hyuk Park, Jong Won Lee, Sunyong Hwang… in Light: Science & Applications (2015)

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