Scientists have created a laser to recharge the smartphone at a distance

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