Marco A. B. Andrade is a lecturer at the Institute of Physics of University of São Paulo, Brazil and his main research interest is to develop new strategies to levitate and manipulate objects with sound. He received the bachelor’s degree in physics from the Institute of Physics, University of São Paulo, Brazil in 2004, and M.S. and D.Sc. degrees in Mechanical Engineering from Polytechnic School, University of São Paulo in 2006 and 2010, respectively.