• Joonwoo Jeong (정준우)

  • Associate Professor
  • Experimental Soft Matter Physics
  • Current Research Interests

    Examples of soft matter include polymers (plastics), liquid crystals (displays), emulsions (cosmetics), surfactants (soaps), and biomaterials (cell membrane), which are all ubiquitous in our daily life. We define soft matter as all physicochemical systems that have large responses to external stimuli. It is not only an emerging field in condensed matter physics but also an interdisciplinary field between chemistry, chemical engineering, material science, and biology. Our laboratory studies structures and dynamics of soft matter using various experimental methods including microscopy and scattering, and develop new materials with desired properties based on the understanding of underlying physics.

    • Physics and applications of liquid crystals and topological defects
    • Pattern formation in soft matter: geometry and competing interactions
    • Microfluidics of active matter and non-Newtonian fluids
  • Biographical Sketch
    • B.S. in Physics (2007), KAIST, Daejeon, Korea
    • Ph.D. in Physics (2012), KAIST, Daejeon, Korea / Effect of external fields on soft matter systems: liquid crystals in elliptic confinement (Advisor: Prof. Mahn Won Kim)
    • Postdoctoral research fellow in Department of Physics and Astronomy, University of Pennsylvania, PA, U.S.A. (2012 ~ 2014)
    • Assistant Professor in Department of Physics, UNIST (2015 – )
  • Selected Publications
    1. Orthogonal Liquid Crystal Alignment Layer: Templating Speed Dependent Orientation of Chromonic Liquid Crystals, ACS Applied Materials & Interfaces 9, 18355–18361 (2017)
    2. Topography-guided buckling of swollen polymer bilayer films into three-dimensional structures, Soft Matter 13, 956-962 (2016)
    3. Chiral structures from achiral liquid crystals in cylindrical capillaries, Proc. Nat. Acad. Sci., 112, E1837-E1844 (2015)
    4. Chiral symmetry breaking and surface faceting in chromonic liquid crystal droplets with giant elastic anisotropy, Proc. Nat. Acad. Sci., 111, 1742-1747 (2014)
    5. One-step preparation of magnetic Janus particles using controlled phase separation of polymer blends and nanoparticles, RSC Advances, 3, 11801-11806 (2013)
    6. Confinement-induced transition of topological defects in smectic liquid crystals: From a point to a line and pearls, Phys. Rev. Lett., 108, 207802 (2012)