Giuliano Zanchetta submitted some images from a recent Science paper that he co-authored. His description of the work is below. Be sure check out the two images of his work that are in the DEC-JAN gallery, as well as images that will be popping up in future galleries.
"Aqueous solutions of short DNA duplexes were recently discovered, in a joint work between our laboratories, to show chiral nematic and hexagonal columnar liquid crystalline phases, although they lack the required shape anisotropy according to classical Onsager criterion (Nakata, Zanchetta et al. Science 318, 1276 (2018)). These phases are produced by the end-to-end adhesion and consequent stacking of the duplex oligomers into polydisperse anisotropic rod-shaped aggregates, which can order into liquid crystals. Disturbing this stacking with flexible unpaired tails suppresses the nematic phase but the highest concentration columnar phase may survive."
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