Ultrasound levitation can bend around obstacles

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Researchers at the University of Sussex, UK, have developed SoundBender, the world’s first technology that can bend sound waves and levitate objects. The interface – created by Professor Sriram Subramaniam, Dr Gianluca Memoli and Dr Diego Martinez Plasencia – produces self-bending beams. These beams can levitate small objects and also provide tactile feedback around an obstacle. Previous ultrasound levitation experiments have been unsuccessful in creating a sound field that is capable of avoiding obstacles positioned between the levitating object and the transducers. To overcome this challenge, the researchers developed a hybrid system. Unlike electric and magnetic levitation techniques, ultrasound levitation…

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