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  1. Article

    Open Access

    Rapid mold-free fabrication of long functional PDMS fibers

    Polydimethylsiloxane (PDMS), an optically transparent and inert material, is widely used in biological and semiconductor applications owing to its excellent chemical stability and moldability. This study propo...

    Jeong Hui Lee, Taekyung Lim, Keumyoung Seo, Jeeyin Park, Jonguk Yang… in NPG Asia Materials (2022)

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  2. Article

    Open Access

    Development of multi-angle fiber array for accurate measurement of flexion and rotation in human joints

    Herein, we have proposed a method that uses a highly stretchable and conductive fiber-based multi-angle fiber array, which precisely measures human joint motion in various degrees of freedom (flexion and rotat...

    Sang-Mi Jeong, Minkyun Son, Youngsoo Kang, Jonguk Yang… in npj Flexible Electronics (2021)

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  3. No Access

    Article

    Renormalization in the Golden-Mean Semi-Siegel Hénon Family: Non-Quasisymmetry

    For quadratic polynomials of one complex variable, the boundary of the golden-mean Siegel disk must be a quasicircle. We show that the analogous statement is not true for quadratic Hénon maps of two complex va...

    Jonguk Yang in Arnold Mathematical Journal (2020)

  4. No Access

    Chapter and Conference Paper

    The Boundaries of Golden-Mean Siegel Disks in the Complex Quadratic Hénon Family Are Not Smooth

    As was recently shown by the first author and others in Gaidashev et al. (Renormalization and Siegel disks for complex Henon maps, [12]), golden-mean Siegel disks of sufficiently dissipative complex quadratic Hén...

    Michael Yampolsky, Jonguk Yang in New Trends in One-Dimensional Dynamics (2019)