AA << show for the first time experimentally that knots can go from a mobile to a jammed state by varying an applied strain rate, and that this jamming is reversible >>
Alexander R. Klotz, Beatrice W. Soh, and Patrick S. Doyle. Motion of Knots in DNA Stretched by Elongational Fields. Phys. Rev. Lett. 120, 188003. May 3, 2018.
Anne Trafton. Chemical engineers discover how to control knots that form in DNA molecules. Massachusetts Institute of Technology. May 3, 2018.