image: Schematic presentation of made-to-order assembly of Borromean rings on a 4x4 particle array. The feasible tangle combinations were tested by the numerical algorithm based on the Jones polynomials. The selected configuration was identified by direct comparison with polynomials in the enumerated base of knot invariants and finally assembled using laser tweezers. Designed by Uroš Tkalec. This image relates to an article that appeared in the July 1, 2011, issue of Science, published by AAAS. The study, by Uroš Tkalec of the Jožef Stefan Institute in Ljubljana, Slovenia, and colleagues was titled, "Reconfigurable Knots and Links in Chiral Nematic Colloids." view more
Credit: [Image © <i>Science/</i>AAAS]