New butterfly-inspired device for faster communication
- Jigisha Ghosh murder case: Two convicts get death sentence, life imprisonment for one
- Ban pellet guns in Kashmir, Omar Abdullah-led delegation asks PM Modi
- PM Modi, Afghan President Ghani jointly inaugurate renovated Stor Palace
- AAP doesn't have money to fight election: Kejriwal
- Kicking off UP poll campaign, Mayawati slams BJP-RSS, SP, is soft on Congress
By mimicking microscopic structures in butterfly wings, researchers have developed a nanodevice smaller than the width of a human hair that could make optical communication faster and more secure.
The international team of researchers from Swinburne University of Technology in Australia and Friedrich-Alexander Universitat Erlangen-Nurnberg in Germany, have produced a photonic crystal that can split both left and right circularly polarised light.
The design for this crystal was inspired by the 'Callophrys Rubi' butterfly, which has 3D nano-structures within its wings which give them their vibrant green colour. Other insects also have nano-structures that provide colour, but the Callophrys Rubi has one important difference.
"This butterfly's wing contains an immense array of interconnected nano-scale coiled springs that form a unique optical material. We used this concept to develop our photonic crystal device," researcher Dr Mark Turner, said.
Using 3D laser nano-technology, researchers built a photonic crystal with properties that don't exist in naturally occurring crystals, specifically one that works with circular polarisation. This miniature device contains over 750,000 tiny polymer nano-rods.
The photonic crystal acts as a miniature polarising beam splitter which is used in modern technology - such as telecommunications, microscopy and multimedia - are built from naturally occurring crystals, which work for linearly polarised light but not circularly polarised light.
"We believe we have created the first nano-scale photonic crystal chiral beam splitter," Director of the Centre for Micro-Photonics at Swinburne, Professor Min Gu, said.
"It has the potential to become a useful component for developing integrated photonic circuits that play an important role in optical communications, imaging, computing and sensing.
"The technology offers new possibilities for steering light in nano-photonic devices and takes us a step closer towards developing optical chips that could overcome the bandwidth bottleneck for ultra-high speed optical networks," said Gu.
The study was published in the journal Nature Photonics.
- Farm incomes may not revive despite good monsoon
- India’s new line that Pak will have to pay for cross-border terror was overdue
- Just how did Pakistan become so central to the definition of Indian patriotism?
- Why AAP needs to go back to school
- Next door Nepal: Detente in Kathmandu
- PM's Balochistan policy: Gameplan, gambit or gamble?