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| From pencil marks to quantum computers Posted: 03 Jul 2014 01:23 PM PDT One of the hottest materials in condensed matter research today is graphene. Graphene had an unlikely start: it began with researchers messing around with pencil marks on paper. Pencil "lead" is actually made of graphite, which is a soft crystal lattice made of nothing but carbon atoms. When pencils deposit that graphite on paper, the lattice is laid down in thin sheets. By pulling that lattice apart into thinner sheets -- originally using Scotch tape -- researchers discovered that they could make flakes of crystal just one atom thick.  |
| Power consumption of robot joints could be 40% less Posted: 03 Jul 2014 06:20 AM PDT Robots are being increasingly used in industrial processes because of their ability to carry out repetitive tasks in a precise, reliable way. Right now, digital controllers are used to drive the motors of the joints of these robots. And it is no easy task developing and programming these controllers so that they will work efficiently. Scientists have developed a way of propelling these systems or robots in a more energy-efficient way and have shown, on a laboratory level, that in some cases energy consumption can be cut by up to 40%.  |
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