Scientists have successfully used sound waves to “sew” a thread into a piece of fabric.
About:
Scientists ‘sew’ with just sound waves
Scientists from University of Bristol in the U.K. and Universidad Publica De Navarra in Spain have successfully used sound waves to levitate and manipulate multiple objects simultaneously for the first time, using the system to “sew” a thread into a piece of fabric.
Working:
They attached two millimetric polystyrene spheres to a piece of thread and used the acoustic tweezers to “sew” the thread into a piece of fabric. The system can also simultaneously control the 3D movement of up to 25 of these spheres in air.
Sound exerts a small acoustic force and by turning up the volume of ultrasonic waves, too high pitched for humans to hear, scientists create a sound field strong enough to move small objects.
Significance: The system could be used to acoustically stitch up internal injuries or deliver drugs to target organs.
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