User:Young Jo Kim

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Young Jo KIm

Young Jo Kim
Young Jo Kim

Ph.D. Candidate
Surface Science and Plasma Technology, Center for
Department of Chemical Engineering
University of Missouri
Columbia, MO U.S.A.
yjknb6@mail.mizzou.edu

Education, Professional Experience

Research interests

  1. Electrochemical DNA Biosensor
    • Electrochemical detection of target gene has provided a specific, sensitive and rapid way to strengthen the feasibility of disease detection in early stage. Combining the electrochemical detection technique with nanostructured material, three-dimensional nanostructured DNA sensor was synthesized for more ultra-sensitive and specific target nucleic acid detection. As a result, innovative nanostructured electrode showed potentially zepto-molar (10-21M) sensitivity with high specificity.
  2. SERS (Surface-enhanced Raman Spectroscopy)
    • Surface-enhanced Raman spectroscopy (SERS) is a typical biosensor technique which combines the nanotechnology and biological information for a single molecule detection. Although surface plasmon effect caused by uniform roughened gold surface is known to amplify Raman signal of analytes, surface chemical property on SERS template such as hydrophobicity affects more important to intensify Raman signal since the Raman can be localized much easily and precisely when surface properties become opposite to that of analytes. In this manner, SERS template synthesis is performed with bottom-up process by monodisperse Si nanoparticle with polymer matrix. Limit of detections are now examined by various surface chemical properties.
  3. Surface Modification of Nanomaterials
    • Plasma modification with different gas mixture was used to modify nanomaterial such as diamond nanoparticle, carbon nanotube. This work initially involved experiments fabricating on more stable liquid-nanoparticle solution by surface treatment of nanoparticle and applied to the concept “nanofluid” which enhanced thermal conductivity of fluid.
    • Ligand exchange for hydrocarbon-terminated monodisperse magnetic nanoparticle such as FePt, CoPt and Fe3O4 to hydrophilic nanoparticle for biological applications
  4. Low-temperature Plasma Polymerization
    • Surface Modification of Polymeric Membrane
      • Low-temperature plasma technology was also used in the Thin-film composite fabrication. Interfacial plasma modification on PVDF polymeric membrane was performed to fabricate thin-film composite (TFC)
    • Anti-corrosion Interface Polymerization
      • Thin layer (~50nm) of plasma polymer was formed at the interface between Al pannel and chromated primers for anti-corrosive application. Interfacial plasma polymer showed superb properties in salt rejection and water uptake during a long period immersion in salt solution by electrochemical impedence spectroscopy (EIS) and cyclo polarization (CP).
  5. Dental Retorative Nanocomposite
    • Surface modified silica nanoparticle and hydroxyapatite nanofiber were used to enhance the physical strength of detal restorative nanocomposite within bis-GMA/TEGDMA polymeric matrix. Surface functionalizations were performed by either chemical method or plasma polymerization. Bi-axial flexural strength has enhanced about 20% after curing compared to composite made with non-modifed fillers.


Publications

  1. Preparation and characterization of polyamide thin film composite (TFC) membranes on plasma-modified polyvinylidene fluoride (PVDF)[1] [paper1]
  2. Nanofluids with plasma treated diamond nanoparticles [1]

    [paper2]

  3. Plasma treatment of nanoparticles for nanofluids [1]

    [Book1]

  4. Plasma treatment of diamond nanoparticles for dispersion improvement in water[1]

    [paper3]

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