acoustic metamaterials tagged posts

Sound waves may pave the way for topological electronic transistors. Researchers have designed and simulated the first topological acoustic transistors — with sound waves instead of electrons — and proposed a connection architecture to form a universal logic gate that can switch the flow of sound on and off.

Topological materials move electrons along their surface and edges without any loss, making them promising materials for dissipationless, high-efficiency electronics...

Dr. Gianluca Memoli, Mohd Adili Norasikin and Dr. Diego Martinez Plasencia with SoundBender.
Credit: University of Sussex

Researchers at the University of Sussex have become the first in the world to develop technology which can bend sound waves around an obstacle and levitate an object above it. SoundBender, developed by Professor Sriram Subramanian, Dr Gianluca Memoli and Dr Diego Martinez Plasencia at the University of Sussex, is an interface capable of producing dynamic self-bending beams that enable both levitation of small objects and tactile feedback around an obstacle.

The technology, to be presented at the 31st ACM User Interface Software and Technology Symposium in Berlin this Monday [October 15], overcomes two key limitations of previous ultrasound levitation set-ups, which were ...