This year's top five stories -
1. Nanohorns behave as antiviral agents
Real-time footage shows laser-driven carbon nanohorns eliminating a target virus.
2. IBM develops tiniest nanophotonic switch
Device could be used to route optical data in future computer chips.
Nanostructured device can be made by anyone in 15 minutes under ambient conditions.
4. SWNTs remove bacteria and viruses from water
Single-walled carbon nanotube filter in the pipeline to clean up water.
5. Carbon tubes without the 'nano'
New structures are 30 times stronger than Kevlar, say researchers.
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