By US3DP
Imagine a machine that can materialize objects using sound waves without physically touching them.
This is not from a sci-fi movie, but it's a reality! Scientists in Germany have developed a new form of 3D printing called "touchless 3D printing."
It uses ultrasound holograms to create any 3D shape they want. This was published in Science Advances and carried out by the Max Planck.
The researchers discovered that ultrasonic acoustic fields could manipulate tiny matter in simple ways.
The holograms are made of ultrasound waves that act as invisible hands shaping matter without touching it.
Sound waves can exert a force on physical matter, as we experience at concerts when the speakers blast out music that can leave us breathless.
This new technology harnesses that force to create objects and, potentially, even living tissue.
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