In Japan, created a levitating artificial firefly

Japanese specialists from the University of Tokyo have developed a tiny LED device capable of flying in the air like a firefly.

A semicircular device can hang in the air when ultrasonic sources are used.

A “firefly” that can be used, for example, for lighting while reading a book, has a size of 4 mm and weighs 16 mg. The device, called the Luciola, does not have a battery. The required energy is received wirelessly.

According to scientists, in the future such devices can be combined into groups to create images in the air.

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