| Nanoparticle patterning on a vibrating solid surface according to the vibration modes of the solid is the result of extremely high solid surface acceleration and persistent flow beyond the steady boundary layer. The solid surface acceleration magnitude increased proportionally to the square of vibration angular frequency. The tens-of-megahertz frequency causes the surface acceleration to reach an order of 107 m/s2, thus providing a substantial impact force when a nanoparticle falls onto the solid surface. On the other hand, the acoustic radiation pressure and acoustic streaming drag due to the persistent flow beyond the steady boundary layer transport lifted nanoparticles to an adjacent region where the adhesion force overcomes the impact force. |