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Why carbon nanotubes spell trouble for cells

Scientists have shown that certain nanomaterials, such as carbon nanotubes, enter cells tip-first and almost always at a 90-degree angle. The orientation ends up fooling the cell; by taking in the rounded tip first, the cell mistakes the particle for a sphere, rather than a long cylinder. By the time the cell realizes the material is too long to be fully ingested, it's too late.

Posted: Sep 18th, 2011

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Superconductors and X-ray beams: the drawing shapes

An Italian-British team of scientists has succeeded in drawing superconducting shapes using an X-ray beam. The study shows how being able to create and control tiny superconducting structures could lead to innovative electronic devices.

Posted: Sep 16th, 2011

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Quantum behavior with a flash

Just as a camera flash illuminates unseen objects hidden in darkness, a sequence of laser pulses can be used to study the elusive quantum behavior of a large "macroscopic" object. This method provides a novel tool of unprecedented performance for current experiments that push the boundaries of the quantum world to larger and larger scales.

Posted: Sep 16th, 2011

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