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Ung Su Choi

As seen in: Royal Society of Chemistry
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Articles

Nanofibrous spherical cage mimicking a ball of pearl necklaces for super capture of heavy metal ions

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By Youngkyun Jung, Ung Su Choi
| Royal Society of Chemistry Verified
Nanofibrous spherical cage mimicking a ball of pearl necklaces for super capture of heavy metal ions† Youngkyun Jung,ab Ung Su Choiab and Young Gun Ko *c Author affiliations * Corresponding authors a Division of Energy & Environment Technology, Korea University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea b National Agenda Research Division, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea c...
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Rotation of electrically charged polymer particles for potential applications to micro-propulsion systems

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By Taegu Do, Youngkyun Jung, Youngsang Chun, Ung Su Choi
| Royal Society of Chemistry Verified
Rotation of electrically charged polymer particles for potential applications to micro-propulsion systems The possibility of an interelectrode oscillation behavior of dielectric dispersoids in colloidal dispersion by electric-stimuli has been suggested but has not yet been reported. Here, we present a strategy for inducing the oscillation behavior based on dielectric constant (ε) matching and conductivity (σ) mismatching techniques between the dispersoids and dispersion medium.
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