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Researchers at the Karlsruhe Institute of Technology (KIT) have created the smallest framework in the world: The struts measure less than a micrometer and are about 200 nanometers thick. Because the framework is so tiny, it has a stability that is surpassed only by diamonds. That's the secret of such metamaterials. These are specially structured fabrics, such as cloaks, which can lead light, sound or heat around objects. The micro-framework is made of glassy carbon and is around a factor of five smaller than comparable metamaterials. This was achieved by gradual shrinking and glazing. The stable structure could once be used as an electrode, filter or optical component.

Photo: J. Bauer / KIT

© science.de - Ruth Roebuck
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