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Story summary
- An international team of scientists developed a method to control high-voltage discharges with high-frequency sound.
- They create ultrasonic fields to guide plasma through low-density air, making sparks follow precise paths.
- The approach is safer and more efficient than laser methods and enables wireless circuit switching, material milling, and targeted bacterial treatment.
- The method currently only works with alternating current sparks.
- Findings were published in Science Advances.
