New technologies will allow a more ecological and wireless Internet of things

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  • A third of the world's population is still disconnected from the Internet

New technologies will enable a more ecological and wireless Internet of things

Technologies Emerging events are increasingly bringing us closer to the typical scenes in a fictional film. These technologies are based on alternative semiconductor materials, such as printable organics, nanocarbon allotropes and metal oxides, can achieve that InternetIt is one of the most sustainable things from an economic and environmental point of view, according to what an international team led in Arabia publishes in the magazine 'Nature Electronics' Saudi from the Rey Abdalá University of Science and Technology. (KAUST).

The Internet is one of the tools called to continue to have a great impact on daily life and in many areas of the industry. It connects and facilitates the exchange of data between a multitude of intelligent objects of different shapes and sizes, such as: Remote-controlled home security systems, self-driving cars equipped with sensors that They detect obstacles on the road and factory equipment with temperature control over the Internet.

That's how it works. itself, it is anticipated that that this flourishing hypergridIt will reach trillions of devices in the next decade , which will skyrocket the number of devices. This will increase the number of sensor nodes deployed on their platforms.

Current approaches to power sensor nodes are based on battery technology strong>, but these need to be replaced regularly, which is costly and harmful to the environmentover time. In addition, current global production of lithium for batteries may not keep up with the increasing power demand from the growing number of sensors.

Nodes Wirelessly powered sensors could help achieve a sustainable Internet of Things, extracting energy from the environment through so-called energy collectors, such as photovoltaic cells and radiofrequency (RF) energy collectors, among other technologies. Large surface electronics could be key to enabling these power sources.

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Kalaivanan Loganathan, ancient student at KAUST, he evaluated his studies. with Thomas Anthopoulos and collaborators will discuss the feasibility of various large-area electronic technologies and their potential to deliver green, wirelessly-powered Internet of Things sensors.

The electronics of Large surface area has recently emerged as an attractive alternative to conventional silicon-based technologies thanks to major advances in solution-based processing, which have made it easier to print devices and circuits on flexible substrates with a large surface area.

They can be made at lower temperatures and on biodegradable substrates such as paper, making them more environmentally friendly than their paper-based counterparts. silicon.

Over the years, the Anthopoulos team has developed a number of radio frequency electronic components, including semiconductor devices based on metal oxides and organic polymers known as Schottky diodes.

“These devices are crucial components of wireless energy harvesters and ultimately determine the performance and cost of the sensor nodes,” explains Loganathan.

Finally, among the main contributions of the Kaust team are scalable methods of fabrication of RF diodes to harvest energy that reach the range of frequencies 5G/6G . “These technologies provide the building blocks for a more sustainable way of powering the billions of sensor nodes in the near future,” says Anthopoulos.

“The team is investigating The monolithic integration of these low-power devices with antennas and sensors will demonstrate their true potential,” adds Loganathan.