By Cristina Sáez
Light-emitting diodes (LEDs) are considered the best source of artificial light, but the truth is that their days could be numbered. A group of scientists from the University of Tohoku, in Japan, achieved an invention that surpasses them.
It is a new type of flat light source made with carbon nanotubes, very efficient, low cost and with minimal energy consumption, published in Quo magazine of February 2015. Carbon nanotubes are very resistant structures and thin that conduct electricity.
They are called to be, together with graphene, the material of the future, according to experts.
"Our simple panel could achieve a high brightness efficiency of 60 lumens per watt, which represents excellent potential for a lighting device with low power consumption," says one of the authors of the research, Norihiro Shimoi, published in 'Review of Scientific Instruments'.
Compared to LED lights, the new carbon nanotube-based light source has minimal power consumption. It is estimated to use about 0.1 watts per hour of operation, about 100 times less than LED lights.