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Caption: This shows a 3-D representation of the molecular structure of the polymer. This image relates to a paper that appeared in Jan. 18, 2013, issue of Science, published by AAAS. The paper, by Mariolino Carta at Cardiff University in Cardiff, UK, and colleagues was titled, "An Efficient Polymer Molecular Sieve for Membrane Gas Separations."
Credit: [Image courtesy of Elena Tocci]
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