Researchers at US computer company Hewlett-Packard said today they had created a computer memory chip using new molecular technology that takes miniaturisation further than before.
Using previously patented technology, the scientists have created a 64-bit memory unit that fits inside a square micron - a micron is one millionth of a metre.
Its capacity is too low to be useful yet but it is a key advance in what is called nanotechnology - manipulating molecules and atoms.
In about 10 years' time the possibilities of further miniaturisation with current chip-making technology will end.
"Capacity and performance could be extended enormously by layering molecular-switch devices," said Mr R Stanley Williams, HP Fellow and director of Quantum Science Research at HP Labs.
The work, which is at a very early stage and could take many more years to become commercial, also combined for the first time both memory and logic by manipulating molecules caught in a grid of superthin platinum wires. A piece of logic is needed to make memories practical.
