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Steering electricity through the air with ultrasound pulses | Scientists in Europe and Canada have now managed to guide sparks through thin air and even around obstacles using ultrasound waves.
Electricity is chaotic, and we normally need to constrain it to wires and circuits to make use of it. Scientists in Europe and Canada have now managed to guide sparks through thin air and even around obstacles using ultrasound waves.
“We observed this phenomenon more than one year ago, then it took us months to control it, and even longer to find an explanation,” said Asier Marzo, lead researcher on the study. The researchers were able to steer the plasma to hit specific electrodes and avoid others, which could make for controlled switching in wireless circuits. Other applications the team suggests include etching patterns into colonies of bacteria, and even devices that generate haptic feedback by delivering low-power plasma bolts to the skin.
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