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A coherent look at crystalline defects

A lensless X-ray microscope has captured, in stunning detail, the first three-dimensional images of crystalline defects during crystal growth of a mineral, calcite.

Posted: Jun 4th, 2015

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A microscopic approach to the magnetic sensitivity of animals

Researchers have succeeded in developing a new microscope capable of observing the magnetic sensitivity of photochemical reactions believed to be responsible for the ability of some animals to navigate in the Earth's magnetic field, on a scale small enough to follow these reactions taking place inside sub-cellular structures.

Posted: Jun 4th, 2015

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Engineers show how 'perfect' materials begin to fail at the nanoscale

Crystalline materials have atoms that are neatly lined up in a repeating pattern. When they break, that failure tends to start at a defect, or a place where the pattern is disrupted. But how do defect-free materials break? Until recently, the question was purely theoretical; making a defect-free material was impossible. Now that nanotechnological advances have made such materials a reality, however, researchers have shown how these defects first form on the road to failure.

Posted: Jun 4th, 2015

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Cost-effective risk assessment of nanomaterials may be feasible

The Dutch National Institute for Public Health and the Environment has commissioned the development of a strategy to evaluate the potential for read-across in cases of missing data for nanomaterials, with a focus on fulfilling data requirements in regulatory frameworks.

Posted: Jun 4th, 2015

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How to cut a vortex into slices

A group of physicists came up with a way to stir up a liquid in the microchannel. Physicists managed to find a sophisticated solution to the problem based on the use of superhydrophobic surfaces.

Posted: Jun 3rd, 2015

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Nano-spirals could guard against identity theft

Take gold spirals about the size of a dime and shrink them down about six million times. The result is the world's smallest continuous spirals: 'nano-spirals' with unique optical properties that would be almost impossible to counterfeit if they were added to identity cards, currency and other important objects.

Posted: Jun 3rd, 2015

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