香蕉直播

Scientists in Australia and Europe have taken an important step towards removing 鈥榟ot鈥� electrons from the data chips that are a driving force in global telecommunications.

Researchers from the University of Sydney Nano Institute and say that chips using light and sound, rather than electricity, will be important for the development of future tech, such as high-speed internet as well as radar and sensor technology. This will require the low-heat, fast transmission of information.

鈥淎s demand for high bandwidth information systems increase, we want to get ahead of the curve to ensure we can invent devices that don鈥檛 overheat, have low energy costs and reduce the emission of greenhouse gases,鈥� said from the in the School of Physics and Sydney Nano.

The idea is to use sound waves, known as phonons, to store and transfer information that chips receive from fibre-optic cables. This allows the chips to operate without needing electrons, which produce heat. The team was the first in the world to successfully manage this process on chip.

However, information transferred from fibre-optic cables onto chips in the form of sound waves decays in nanoseconds, which is not long enough to do anything useful.

鈥淲hat we have done is use carefully timed synchronised pulses of light to reinforce the sound waves on-chip,鈥� said , who has moved from the University of Sydney to lead an at the Max Planck Institute for the Science of Light in Germany.

鈥淲e have shown for the first time that refreshing these phonons is possible and that information can therefore be stored and processed for a much longer time,鈥� she said.

The scientists carefully timed pulses of light to extend the lifetime of the information stored in sound waves on the chip by 300 percent, from 10 nanoseconds to 40 nanoseconds.

The research, published in the journal聽, was done in collaboration with the聽聽at the Australian National University and the聽聽at the University of Southern Denmark.

鈥淲e plan to use this method to extend how long the information remains on-chip,鈥� said Dr Merklein, also from the聽Institute of Photonics and Optical Science聽at the University of Sydney.

Dr Stiller said: 鈥淎coustic waves on chips are a promising way to store and transfer information.

鈥淪o far, such storage was fundamentally limited by the lifetime of the sound waves. Refreshing the acoustic waves allows us to overcome this constraint.鈥�

, a project collaborator from the University of Southern Denmark, said: 鈥淭heoretically, this concept can be extended to the microsecond regime.鈥�

This proof-of-principle demonstration opens many possibilities for optical signal processing, fine filtering, high-precision sensing and telecommunications.

Declaration

This research was supported by the Australian Research Council (CE110001010, FL120100029); and the European Union H2020 Marie Sk艂odowska-Curie Actions (713694).