 A new generation of acoustic levitators employing a large number of small individual piezoelectric-transducers have recently become more common.The first of these levitators was a single-axis standing wave levitator called the TinyLev.The key differences from the Langevin Horn were the use of sources from both top and bottom (rather than a source and a reflector) and the use of a large number of small transducers with parallel excitation, rather than a single piezoelectric element.