When boron nitride outshines gold and silver

Ultra-thin boron nitride outshines gold and silver when used to detect contaminants in smart sensing technology. 

It is 100 times more effective at detecting dangerous materials in our food and environment than noble metals.

Traditionally, detection surfaces of these devices have been made using gold and silver. But covering these metals with a microscopically thin layer of boron nitride greatly enhances their performance.

The findings are by a team from Deakin University’s Institute for Frontier Materials, Japan’s National Institute for Materials Science and China’s Wenzhou University. Continue reading When boron nitride outshines gold and silver

Testing water safety with tiny nanodot sensors

A fingernail-sized sensor with nanodots that can detect the presence of heavy metals has been developed by Victorian scientists.

It offers a cheap and simple method of testing whether water is drinkable.

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Distilling value from industrial waste

Hot and salty water is a common by-product of industries such as textiles, food and dairy production. But new technology that allows this water to be purified, collected and re-used on site has been developed by Victorian scientists.

Their compact module, smaller than the size of a human, can transform a wasteful industrial operation into an efficient process that recycles energy, water and materials.

“We’ve calculated that our module can reduce water use by more than 90 per cent in some industrial settings,” Professor Mikel Duke says.

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Finding pulsars in the archives

China has a large community of astronomers awaiting the construction of new telescopes to study pulsars.

When CSIRO pulsar researcher Dr George Hobbs described the high-quality data stored in the Parkes Observatory Pulsar Data Archive—which is openly available—it led to Australian pulsar data being the basis of collaboration between Chinese and Australian pulsar researchers. And they have already published several papers on what they have discovered. The archive is also serving as a major resource in an international search for gravitational waves.

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Managing a data mountain

The world’s largest telescope, the Square Kilometre Array (SKA), is expected to generate more data in a single day than the world does in a year at present. And even its prototype, CSIRO’s ASKAP, is expected to accumulate more information within six hours of being switched on than all previous radio telescopes combined.

Such gargantuan streams of data require serious management, and that will be one of the jobs of the $80 million iVEC Pawsey Centre in Perth, which is due to be completed in 2013.

The planned Pawsey High-Performance Computing Centre for SKA Science in Perth (photo credit: Woodhead/CSIRO)

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Improved myopia treatment in sight

New glasses that slow the progression of short-sightedness or myopia are now available. The glasses which incorporate a novel lens design could potentially benefit some of the 3.6 million Australians with myopia and hundreds of millions of people worldwide.

New corrective lenses slow the progression of short-sightedness. Credit: iStockphoto
New corrective lenses slow the progression of short-sightedness. Credit: iStockphoto

Until now, correcting myopia has relied on measuring the clarity of vision at the very centre of the retina. Corrective lenses were designed to provide the wearer with clear central vision but did nothing for peripheral vision. Studies have now shown that short-sightedness progressively worsens in spite of correction using these traditional lenses.

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Thirty new languages discovered in China

Credit: Jamin Pelkey
Credit: Jamin Pelkey

Thirty new languages in China have recently been described by Assoc. Prof. David Bradley and Dr Jamin Pelkey of La Trobe University and reported by the journal Science.

Jamin described 18 new Phula languages based on work carried out from 2005 to 2006 in 41 mountain villages in Yunnan Province, Southwest China for his PhD. They are now recognised by the International Organization for Standardization (ISO).

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