Researchers develop ultra-high-strength nanowires

According to the university, the development of ultra-high-strength composites has been a goal of researchers around the world, leading ORC scientists to investigate light, ultra-high-strength nanowires that are not compromised by defects.

Historically, carbon nanotubes were the strongest material available, but high strengths could only be measured in samples measuring a few microns long.

Research by ORC principal research fellow Dr Gilberto Brambilla and ORC director Prof Sir David Payne is said to have resulted in the creation of the strongest, lightest-weight silica nanofibres — ‘nanowires’ that are claimed to be 15 times stronger than steel and can be manufactured in lengths potentially of 1,000’s of kilometres.

According to a statement, their findings are already generating extensive interest from many companies around the world and could be set to transform the aviation, marine and safety industries. Tests are currently being carried out globally into the potential future applications for the nanowires.

‘With synthetic fibres it is important to have high strength, achieved by production of fibre with extremely low defect rates and low weight,’ said Brambilla. ‘Usually, if you increase the strength of a fibre you have to increase its diameter and thus its weight, but our research has shown that as you decrease the size of silica nanofibres their strength increases, yet they still remain very lightweight.