Drifter
Honorary Master
British researchers have built the world's first sonic tractor beams that lift and move objects using soundwaves.
A team from the universities of Bristol and Sussex, in conjunction with Ultrahaptics, a spin-off set up by Sussex Professor of Informatics, Sriram Subramanian, used high-amplitude soundwaves to generate an acoustic hologram that can pick up and move small objects.
Their research, led by PhD student Asier Marzo, was published in Nature Communications in October.
The device allows the manipulation of small spherical objects in mid-air by individually controlling 64 miniature loudspeakers to generate the acoustic hologram without physical contact. The loudspeakers are controlled at a frequency of 40 kilohertz (Khz), creating high-pitched and high-intensity sound waves to levitate spherical, expanded polystyrene beads of up to 4 millimetres in diameter.
http://www.itweb.co.za/index.php?op...&id=148314&A=EMT&S=Innovations&O=E&E=3-165383
A team from the universities of Bristol and Sussex, in conjunction with Ultrahaptics, a spin-off set up by Sussex Professor of Informatics, Sriram Subramanian, used high-amplitude soundwaves to generate an acoustic hologram that can pick up and move small objects.
Their research, led by PhD student Asier Marzo, was published in Nature Communications in October.
The device allows the manipulation of small spherical objects in mid-air by individually controlling 64 miniature loudspeakers to generate the acoustic hologram without physical contact. The loudspeakers are controlled at a frequency of 40 kilohertz (Khz), creating high-pitched and high-intensity sound waves to levitate spherical, expanded polystyrene beads of up to 4 millimetres in diameter.
http://www.itweb.co.za/index.php?op...&id=148314&A=EMT&S=Innovations&O=E&E=3-165383
