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News Link • Techno Gadgets

Sonic Screwdriver?

• arclein
t creates angular momentum in a vortex beam using a number of intertwined helices similar in shape to DNA. The team showed how they could generate vortex beams with many intertwined helices, using a 1000-element ultrasound transducer array as an acoustic hologram. These beams are powerful enough to levitate and spin the 90g disk.

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