Acoustic levitation of an object larger than the acoustic wavelength.

@article{Andrade2017AcousticLO,
  title={Acoustic levitation of an object larger than the acoustic wavelength.},
  author={Marco Aur{\'e}lio Brizzotti Andrade and F{\'a}bio T A Okina and Anne L. Bernassau and Julio Cezar Adamowski},
  journal={The Journal of the Acoustical Society of America},
  year={2017},
  volume={141 6},
  pages={
          4148
        }
}
Levitation and manipulation of objects by sound waves have a wide range of applications in chemistry, biology, material sciences, and engineering. However, the current acoustic levitation techniques are mainly restricted to particles that are much smaller than the acoustic wavelength. In this work, it is shown that acoustic standing waves can be employed to stably levitate an object much larger than the acoustic wavelength in air. The levitation of a large slightly curved object weighting 2.3 g… 

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