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Posted: December 10, 2007
Mountbatten fractals inspired by nanotechnology
(Nanowerk News) The dynamic fractal patterns on the glass panels of the new Mountbatten Building at the University of Southampton were inspired by the School's research on optical nanotechnology.
In association with the Optoelectronics Research Centre, this research is being applied to create new optoelectronic devices which could enhance optical communications or greatly reduce the cost of solar energy.
Glass panels on the external wall of the clean room (Image: Sarah Prendergast)
The £55 million building, currently under construction and due for completion in July 2008, will provide a world-class facility that will allow the School of Electronics and Computer Science and the Optoelectronics Research Centre to make further contributions in these exciting areas of research.
The fractals, which form an ornamental design on the glass of the new building, are inspired by research into optical metamaterials, conducted by Dr Darren Bagnall and Dr Adrian Potts at the University's School of Electronics and Computer Science (ECS) working with Professor Nikolay Zheludev of the ORC.
‘By drawing features that are much smaller than the wavelength of light, photons can be confused into doing things they normally wouldn’t do,’ said Dr Bagnall. ‘The chiral fractal structures when etched into glass at the nanoscale were shown to produce very unusual polarisation changes. By using similar technologies to produce other types of nanostructured arrays on the surfaces of solar cells we could also ensure that optical asymmetries are created that prevent light from escaping the solar cells.’
According to Dr Bagnall the light-trapping technologies could reduce the thickness of expensive semiconductor materials needed in solar panels, and this could directly reduce the cost of the devices. The first challenge is to prove that the technology works in practice, the second key challenge will be to develop cost-effective ways to produce nanopatterned layers.
The research will continue in the new Mountbatten Building. The state-of-the-art, interdisciplinary facility designed specifically to meet the long-term research needs of the School of Electronics and Computer Science and the Optoelectronics Research Centre, contains a large purpose-built clean room and associated laboratories, along with offices and meeting space.
'The technology which will be available in our new building, coupled with our high-quality academics, students and support staff, will enable us to develop faster, smaller, lower-cost, lower power, more environmentally-friendly devices for the next generations of electronic products whilst continuing our pioneering work in computer science,' said Professor Harvey Rutt, Head of ECS.