The power of ultrasonic waves has been harnessed to produce "virtual" objects in mid-air

The field of haptics - integrating computing and the sense of touch - has been around for some time but has required gloves or mechanical devices to impart a sense of feeling.

Now, a team of Japanese researchers has developed a system that uses focused ultrasound to do the job.

Its inventors may soon commercialise the approach.

more ...

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