Week in Review: 2/12/17 – 2/18/17

2/13/2017

New Mechanical Metamaterials Can Block Symmetry of Motion, Findings Suggest

Engineers and scientists at The University of Texas at Austin and the AMOLF institute in the Netherlands have invented the first mechanical metamaterials that easily transfer motion effortlessly in one direction while blocking it in the other, as described in a paper published on Feb. 13 in Nature. The material can be thought of as a mechanical one-way shield that blocks energy from coming in but easily transmits it going out the other side.
https://news.utexas.edu/2017/02/13/new-mechanical-metamaterials-can-block-symmetry-of-motion

Graphene foam gets big and tough

A chunk of conductive graphene foam reinforced by carbon nanotubes can support more than 3,000 times its own weight and easily bounce back to its original height, according to Rice University scientists.

Better yet, it can be made in just about any shape and size, they reported, demonstrating a screw-shaped piece of the highly conductive foam.
http://news.rice.edu/2017/02/13/graphene-foam-gets-big-and-tough/