Youngjong Kang and Seoul Free People Check 

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MIT gel changes color on demand | MIT News

news.mit.edu
Oct 21, · The lead author of the Nature Materials paper is former MIT postdoctoral associate Youngjong Kang, now a professor at Hanyang University in Seoul, Korea. Other authors are Joseph Walish and Taras Gorishnyy, MIT graduate students in materials science and engineering.
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