Researchers continue to experiment with charging the batteries with using a laser. AT This time the engineers at the University of Washington were able to fully charge the smartphone to distance in 4 meter. And, with that the same speed as usual charge.
How it works
A laser that charges a smartphone generates narrowly focused beams in near infrared range. TO the smartphone researchers attached a thin battery that transmits the laser beam to the main battery of the smartphone. AND several thin metal plates for removing excess heat from laser. Plus to all they wrote an application that, at a low level of charge, sends the laser indistinguishable to the human ear signals about That it's time to recharge.
"The acoustic localization system makes it possible for the radiator to notice that the user put the smartphone on The charging surface, which can be the most common table in Across the room " - explains the author of the study Vikram Iyer.
What ended the experiment
FROM I could transmit 2 W electricity to full charge smartphone with that the same speed as usual charge. AND it's on distance in 4.3 meter. What is even more pleasant, the laser does not you need to aim at battery - in near future can distribute energy to gadgets on 1 square meter with distance in 12 meters. The whole question in will be able to Do they make the system more user-friendly, ie. a. purchase with laser additional batteries for charging the main batteries looks like nothing better than the current expensive wireless charger.
Source: Digital Trends