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Graphene for microchips

17.02.2021

A new study from the University of Sussex (UK) shows that changing the structure of nanomaterials such as graphene can effectively unlock their electronic properties.

"We mechanically create folds in the graphene layer. It's a bit like nano-origami," said Alan Dalton, professor in the School of Mathematics and Physical Sciences at the University of Sussex.

This kind of technology - "straintronics" - allows you to fit more chips inside any device. "Everything we want to do with computers to make them run faster can be done by deforming graphene in this way," he added.

It has been previously shown that deformation of the structure of 2D nanomaterials can reveal their key electronic properties, but the exact effect of various "folds" is still poorly understood.

Scientists from Sussex conducted an in-depth study of the structural changes in graphene, as well as molybdenum disulfide, and the stresses they introduce. They demonstrated how the purposeful deformation of such materials allows you to get the desired electronic component, such as a transistor or logic gate.

The results are likely to resonate with an industry forced to follow Moore's law due to the growing demand for faster computing.

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Random news from the Archive

Efficient organic solar panels 21.05.2012

Heliatek has set a new efficiency record for organic solar panels. The first tests showed that the coefficient of conversion of solar energy into electrical energy in Heliatek's new organic solar cells is 15-25% higher than that of crystalline and thin-film ones. As a result, the efficiency of the new cell is 10,7%.

Organic photovoltaic solar cells hold great promise. First of all, they are made of cheap materials - mainly carbon, nitrogen, hydrogen and oxygen. Due to this, their price is 4 times lower than that of silicon solar panels. In addition, organic cells can operate in low light and high temperatures.

Until now, the main obstacle to the wide distribution of a new type of solar panels has been their low efficiency at the level of 5-7%.

Heliatek specialists have been able to increase the efficiency to almost 11% thanks to the use of a family of small organic molecules - oligomers. They are chain molecules consisting of identical links. To create solar cells, oligomers are deposited on a substrate roll using a vacuum process at low temperature. The result is a homogeneous photovoltaic nanolayer capable of efficiently converting sunlight into electricity, even in low light conditions and temperatures up to 80°C.

The latter is especially important and is a unique advantage of a new type of organic solar panel. The fact is that when traditional solar panels are heated, their efficiency drops by 15-20%. Therefore, silicon panels need to be cooled or put up with a loss of power on especially sunny and seemingly ideal days for solar energy.

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