Acoustic Trapping

In English Acoustic trapping has been shown to be a gentle way of performing non-contact immobilization of cells and particles in microfluidic systems. Acoustic trapping uses localized ultrasonic standing waves that are created in microfluidic channels, cavities or other small, confined spaces. The standing wave creates a pressure node that attracts and holds particles and cells. Commonly, structures in the range of a couple of hundred micrometers are used, corresponding to acoustic frequencies in the MHz- range.