A video of a sample during measurement. The left part exhibits a bottom view onto the plate in between the left- and right-handed part of the samples. The right part is a side view onto the same sample. Upon pushing onto the sample, one can see a rotation around the pushing axis on the left and a compression along the pushing axis on the right-hand. For illustration, the in plane displacement vectors are depicted in blue and red. This material relates to a paper that appeared in the 24 November 2017 issue of Science, published by AAAS. The paper, by T. Frenzel at Karlsruhe Institute of Technology in Karlsruhe, Germany, and colleagues was titled, "Three-dimensional mechanical metamaterials with a twist."
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