One of Nikola Tesla’s greatest goals was to transmit electricity wirelessly. Tesla, who made many experiments on this subject and even stated that he succeeded in some of his experiments, could not see the support he wanted at that time and could not fully implement this plan.
Energy transfer was made with infrared rays from a distance of 30 meters.
Today, wireless energy transmission still stands before us as a big target. Researchers continue to conduct various experiments for wireless power transfer. In recent studies, scientists managed to transmit 400 mW of power from 30 meters away.
The power transmitted using an infrared laser can only be used to power some small-scale devices. For devices that need more energy, such as smart phones, this system needs to be developed a little more. The system, which is described as completely safe, switches to low power mode when not in use, reducing energy consumption and avoiding potential harm to people.
The system, which is described as ‘distributed laser charging’, stands out with its greater range as well as being safer than other studies. The device, which is divided into two as transmitter and receiver, can transfer energy thanks to the laser beam as long as they are within sight of each other.
In the experimental setup, the receiver is equipped with a photovoltaic cell to convert the light signal into electrical energy. 30 meters away, an amplifier transmitter specially processed with a silvery-white metal called Erbium is installed.
Measuring just 10mm x 10mm, this receiver is designed small enough to fit in compact devices like sensors. For example, smaller smart home devices such as motion or temperature sensors can be charged wirelessly this way. If this system is developed, smartphones or other devices can be charged during use without the need for any cables.
The new system is open to development
Part of this process can be accomplished by developing the photovoltaic cell in the receiver. Thus, the system that can convert more laser light into electricity can provide more energy. Another potential enhancement would be to allow the system to work with multiple receivers at the same time.
With a central wavelength of 1550 nanometers, the laser is in the safest part of the infrared spectrum. It is stated that this wavelength does not harm human skin or eyes. Scientists continue to work to transfer as much energy as possible and increase the efficiency of the system.
We can say that we are just at the beginning of the road for wireless energy transfer. In the future, this technology can make a difference in the industry as well as in personal devices. So what do you think about wireless energy transfer? You can share your views with us in the comments section.
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