ScienceDaily: Engineering and Construction News

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• Physicists and chemists work to improve digital memory technology
• Asteroid impacts on Earth make structurally bizarre diamonds
• Enabling biocircuits: New device could make large biological circuits practical
• Scientists do glass a solid, with new theory on how it transitions from a liquid
• Remotely controlled magnetic nanoparticles stimulate stem cells to regenerate bones

Physicists and chemists work to improve digital memory technology Posted: 24 Nov 2014 11:36 AM PST Researchers are studying graphene and ammonia to develop high-speed, high-capacity random access memory. The team engineered and tested improvements in the performance of a memory structure known as a ferroelectric tunnel junction.

Asteroid impacts on Earth make structurally bizarre diamonds Posted: 24 Nov 2014 09:56 AM PST Scientists have settled a longstanding controversy over a purported rare form of diamond called lonsdaleite -- a type of diamond formed by impact shock, but which lacks the three-dimensional regularity of ordinary diamond.

Enabling biocircuits: New device could make large biological circuits practical Posted: 24 Nov 2014 09:53 AM PST Researchers have made great progress in recent years in the design and creation of biological circuits -- systems that, like electronic circuits, can take a number of different inputs and deliver a particular kind of output. But while individual components of such biological circuits can have precise and predictable responses, those outcomes become less predictable as more such elements are combined. Scientists have now come up with a way of greatly reducing that unpredictability, introducing a device that could ultimately allow such circuits to behave nearly as predictably as their electronic counterparts.

Scientists do glass a solid, with new theory on how it transitions from a liquid Posted: 24 Nov 2014 06:23 AM PST How does glass transition from a liquid to its familiar solid state? How does this common material transport heat and sound? And what microscopic changes occur when a glass gains rigidity as it cools? A team of researchers offers a theoretical explanation for these processes.

Remotely controlled magnetic nanoparticles stimulate stem cells to regenerate bones Posted: 24 Nov 2014 04:48 AM PST Researchers in bone tissue regeneration believe they have made a significant breakthrough for sufferers of bone trauma, disease or defects such as osteoporosis.

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