International Group of Researchers from the University of Tokhoku, the National University of Singapore and the University of Messina in Italy has developed an innovative method for converting electromagnetic waves into constant current.
Our daily life is filled with electromagnetic waves. The buildings are literally penetrated by Wi-Fi signals, Bluetooth connections between phones and wireless headphones, laptops and printers. Wireless routers emit energy in the form of radio frequency radiation, which allows you to transfer data to various devices.
Scientists proposed to use excess radio frequency energy in the environment to power small gadgets. This approach can significantly reduce dependence on batteries, extend their service life and reduce the negative impact on the environment. This solution can become especially relevant for remote areas where frequent batteries are difficult.
In an article published in the journal Nature electronics, researchers describe in detail how they managed to improve The traditional rectifier, increasing the effectiveness of energy transformation. The rectifier converts an alternating current that changes the direction into constant, current in one direction. This process is carried out using various components, mainly diodes and capacitors.
Existing technologies, for example, the Shottka diode, have encountered difficulties in effective energy transforming. Scientists managed to overcome these problems by developing a compact nano-size spinal rectifier (SR). The device is able to convert the surrounding wireless radio frequency signals with a capacity of less than -20 dBM into constant voltage.
At the moment, the signal source should be in the immediate vicinity of the electronic device. However, researchers are actively working on the improvement of technology. Perhaps, to increase efficiency and compactness in the future, the antenna will be integrated on the chip.
In addition, scientists are developing consistent parallel compounds to configure the impedance in large arrays of spin rectifiers. For this, developers use intercarnations on the chip for the connection of individual sr.
According to researchers, the technology of spin rectifiers can be easily integrated into energy collection modules for powering electronic devices and sensors.
The study of technology opens the way to create a self-sufficient, environmentally friendly energy solution, which can help cope with many challenges of the future. The use of excessive energy of radio frequencies will not only reduce the carbon trace of electronic devices, but also provide new opportunities for the development of autonomous systems in various fields, from “smart” houses to industrial sensors and medical implants.