High-speed single cell dispensing system

In this paper, we discuss the single cell dispensing system to increase both the speed and the success rate of single cell dispensing. Two pairs of capacitance sensors are placed in a biochip to detect the flow velocity of cells, and the air pressure is applied to eject cells by synchronizing the timing. Then, the system theoretically has a capability to eject 3 cells/sec with maximum flow velocity is 10 mm/sec. Finally, we succeeded in automatic dispensing of a single polystyrene bead (=100 μm) from a biochip to culture well atmosphere using developed cell ejection system with the success rate of 50 %. Furthermore, we also succeeded in single swine oocyte dispensing by developed system.