In laboratories from Brazil to Munich, researchers are learning to grab matter with sound alone, sculpting ultrasonic waves into invisible “hands” that can lift, push, and rotate objects without a ...

Robot collective Magnetic microrobot swarms act as motors to move millimetre-sized passive objects without physical contact. (Courtesy: MPI-IS) Strong viscous interactions exist in microscale systems, ...

A metamaterial is a composite material that exhibits unique properties due to its structure, and now researchers have used one featuring a small sawtooth pattern on its surface to move and position ...