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Own FM radio station

06.03.2017

Researchers at the University of Washington (USA) have found a way to make "people's radio" operating in the FM band even more popular. To do this, scientists used the phenomenon of backscattering, in which waves, particles or signals are reflected in the opposite direction, that is, towards the source.

According to the authors of the invention, in any object of everyday life - for example, a poster about the performance of a musical group - you can embed a miniature reflector antenna made of copper tape, which will transmit the necessary information - for example, the song of the ensemble from the poster - "on the tail" of the reflected signals of the air in FM band, but on an adjacent frequency so as not to cause interference. The main advantage of the new device is the minimum amount of energy consumed - 11 microwatts, which will allow such a poster to provide "broadcasting" for two years on one watch battery.

And for those who want to ensure complete independence of their broadcasting, Japanese scientists from Waseda University have developed a way to make printed circuits on ultra-thin, with a diameter of only 750 nanometers, sheets of elastomeric film using a conventional inkjet printer. Silver conductors are applied to the film, then other components, such as resistors or LEDs, are added to them, and the sandwich is sealed with a second layer of film. According to the scientists, their film is 50 times stronger than similar flexible boards and can be stretched without damaging the circuit.

Since a household printer is used in production, the device does not require a special "clean" room, and anyone in the future will be able to print for themselves an "electronic tattoo" with a microcircuit for any occasion - even to control blood sugar, even to monitor muscle contraction, at least to turn yourself into a live Wi-Fi hotspot.

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