London: Researchers have suggested that magnet-making computer bacteria may be used for building biological computers of the future.
The research may lead to the creation of much faster hard drives, the team of scientists say.
As technology progresses and computer components get smaller and smaller, it becomes harder to produce electronics on a nano-scale.
So Microsoft researchers are now turning to nature - and getting microbes involved.
In the current study, the scientists used the bacterium Magnetospirilllum magneticum.
These naturally magnetic Cisco micro-organisms usually live in aquatic environments such as ponds and lakes, below the surface where oxygen is scarce.
They swim following the Earth’s magnetic field lines, aligning in the magnetic field like compass needles, in search of preferred oxygen concentrations.
When the bacteria ingests iron, proteins inside their computer bodies interact with it to produce tiny crystals of the mineral magnetite, the most magnetic mineral on Earth.
Having studied the way the microbes collect, shape and position these nano-magnets inside themselves, the researchers copied the method and applied it outside the bacteria, effectively “growing” computers london magnets that could in future help to build hard drives.
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A team from the UK’s University of Leeds and Japan’s Tokyo University of Agriculture and Technology have used microbes that eat iron.
As they ingest the iron, the microbes create tiny magnets inside themselves, similar to those in PC hard drives.
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Foreign intelligence agencies are also likely to try to target government computers and disrupt the Games later this year, Mr Maude claimed.
A specialist team is in place to protect computer networks, he told a conference in Estonia.
‘We have rightly been preparing for some time - we are determined to have a safe and secure Games.’
Mr Maude, who sparked panic in March by telling drivers to stockpile jerry cans of petrol, said he was alarmed by threats from ‘the dark side of cyberspace’ to the Games.
His comments came as the government put on a show of strength in London with military exercises involving RAF typhoon jets and missile launchers stationed on Blackheath.
“We are quickly reaching the limits of traditional electronic manufacturing as computer components get smaller,” the BBC quoted lead researcher Dr Sarah Staniland of the University of Leeds, as saying.
“The machines we’ve traditionally used to build them are clumsy at such small scales.
“Nature has provided us with the perfect tool to [deal with] this problem,” Staniland said.
Besides using microorganisms to produce magnets, the researchers also managed to create tiny electrical wires from living organisms.
They created nano-scale tubes made from the membrane of cells, grown in a lab-controlled environment with the help of a protein present in human lipid molecules.
Such tubes may in future be used as microscopic bio-engineered wires, capable of transferring information - just like cells do in our bodies - inside a computer, Dr Masayoshi Tanaka from Tokyo University of Agriculture and Technology said.
“These biological wires can have electrical resistance and can transfer information from one set of cells inside a bio-computer to all the other cells,” he said.
Besides computers, such biological wires could even be used in future for human surgery because they are highly biocompatible, Dr Tanaka suggested.
“Various tiny wires have been already developed all over the world, but the biocompatibility is still problematic,” he said.
“The fabricated nano-wires in this study were covered with components of cell membrane, so theoretically they are highly biocompatible,” he added.
The study appears in the journal Small.