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The world's oceans are currently under threat not only from large pieces of plastic trash, but also from minuscule "microplastic" particles – many of which take the form of fibers that are shed by ...

It’s a question I’m sure was keeping you up at night: can you make an object spin with a sound wave? The answer, generally speaking, used to be no. Now, though, mechanical engineers have taken a look ...

A research team at City University of Hong Kong (CityU) has discovered a new type of sound wave: the airborne sound wave vibrates transversely and carries both rotation and orbital angular momentum ...