Tag Archives: gold

Predicting where gold and copper lie

Indonesian and Australian scientists are part of a team searching for buried treasure: using the movement of tectonic plates to predict when and where giant deposits of gold and copper should form, while building an understanding of the conditions these deposits are created in. The project, which was begun in 2013 and due for completion in 2016, is using Southeast Asia as a ‘natural laboratory’ to explore these natural processes and their products. Knowing when and how deposits formed can help us understand geological processes occurring today. Continue reading Predicting where gold and copper lie

Measuring mercury with a Midas touch

Nano-gold spikes magnified 200,000 times. Credit: RMIT
Nano-gold spikes magnified 200,000 times. Credit: RMIT
RMIT University researchers have used nanotechnology to create a pioneering sensor that can precisely measure one of the world’s most poisonous substances—mercury. The mercury sensor developed by RMIT’s Industrial Chemistry Group uses tiny flecks of gold that are nano-engineered to make them irresistible to mercury molecules. Continue reading Measuring mercury with a Midas touch

From Roman nanocrystals to new gold catalysts

Electron micrograph of different forms of gold nanocrystals.
Electron micrograph of different forms of gold nanocrystals.
Two thousand years ago, Roman glass blowers used gold nanocrystals to create vases with brilliant colours ranging from red to purple. Today, gold nanocrystals are being used as catalysts in chemical reactions and may even become high-density data storage devices. Gold nanocrystals aren’t gold in colour. They change colour as their size and shape change. Continue reading From Roman nanocrystals to new gold catalysts